Dowcorning 20 release coating
Dow Corning 品牌 Silicone Encapsulants 类型 Elastomers
Long-term, reliable protection of sensitive circuits and compo-nents is becoming more important in many of today’s delicate and demanding electronic applications. Silicones function as durable dielectric insulation, as barriers against environmental contam-inants and as stress-relieving shock and vibration absorbers over a wide temperature and humidity range.In addition to sustaining their physical and electrical properties over a broad range of operating conditions, silicones are resistant to ozone and ultraviolet degradation, have good chemical stability and are available in a variety of useful forms as conformal coat-ings, encapsulants and adhesives. Dow Corning’s broad rangeof general purpose and specialty products offers you a choice of materials for your application needs. DESCRIPTIONDow Corning® silicone encapsulants are supplied as two-part liquid component kits comprised of:Mix Ratio Components(by weight or volume) (as supplied)1:1 Part A/Part B10:1 Base/Curing agentWhen liquid components are thoroughly mixed, the mixture cures to a flexible elastomer, which is suited for the protection of electrical/electronic applications. Dow Corning silicone en-capsulants cure without exotherm at a constant rate regardless of sectional thickness or degree of confinement. Dow Corning silicone elastomers require no post cure and can be placedin service immediately following the completion of the cure schedule with an operating temperature range of -45 to 200°C (-49 to 392°F). Select materials have been classified by Underwriters Laboratories and/or meet military specifications. Standard silicone encapsulants require a surface treatment with a primer in addition to good cleaning for adhesion while primerless silicone encapsulants require only good cleaning.1These data were collected on 50-100 gram samples of a lot believed to be typical and should be used as initial estimates of cure times. Times will vary slightly from batch to batch and can be longer or shorter due to thermal mass of your parts and your heating ramp rate. Pretesting is recommended to confirm adequate cure for your application.2For primerless adhesion products, cure time is based on time to reach durometer. Full adhesion may take more time at the cure temperature.MIXING – 1:1/PART A:PART BDow Corning silicone 1:1 encapsulants are supplied in two parts that do not require lot matching. The 1:1 mix ratio, by weight or volume, simplifies the proportioning process. To ensure uniform distribution of filler, Parts A and B must each be thoroughly mixed prior to their combination in a 1:1 ratio. When thoroughly blended, the Part A and B liquid mixture should have a uniform appearance. The presence of light-colored streaks or marbling indicates inadequate mixing and will result in incomplete cure.Due to the fast-curing characteristics of some encapsulants included in this data sheet, automated mix and dispense equip-ment should be utilized. In applications sensitive to air entrap-ment, deairing with 28 to 30 inches Hg vacuum is required. MIXING – 10:1/BASE:CURING AGENTDow Corning silicone 10:1 encapsulants are supplied in two parts as lot-matched base and curing agent that are mixed in a ratio of 10 parts base to one part curing agent, by weight. After thoroughly mixing base and curing agent, agitate gently to reduce the amount of air introduced. Allowing the mixture to set for 30 minutes before pouring may be adequate for removal of the air introduced during mixing. If air bubbles are still present, vacuum deairing may be required. Deair in a container with at least four times the liquid volume to allow for expansion of material. Air entrapped in the mixture can be removed by using a vacuum of 28 to 30 inches Hg. Continue the vacuum until the liquid expands and settles to its original volume and bubbling subsides. This may take 15 minutes to 2 hours depending on the amount of air introduced during stirring. For best curing results, glassware and glass or metal stirring implements should be used. Mix with a smooth action that does not introduce excess air.POT LIFE/WORKING TIMECure reaction begins with the mixing process. Initially, cure is evidenced by a gradual increase in viscosity, followed by gelation and conversion to a solid elastomer. Pot life is defined as the time required for viscosity to double after Parts A and B (base and curing agent) are mixed. Please refer to individual pot life for each silicone encapsulant. PROCESSING AND CURINGThoroughly mixed Dow Corning silicone encapsulant may be poured/dispensed directly into the container in which it is to be cured. Care should be taken to minimize air entrapment. When practical, pouring/dispensing should be done under vacuum, particularly if the component being potted or encapsulated has many small voids. If this technique cannot be used, the unit should be evacuated after the silicone encapsulant has been poured/dispensed.Dow Corning silicone encapsulants may be either room tem-perature (25°C/77°F) or heat cured. Room temperature cure encapsulants may also be heat accelerated for faster cure. Ideal4P5200 Clear131 (87)77/522Most metals, glass,ceramics and someplastics Pigmented two-part addition cure1200 Clear13 (55)7231200 Red13 (55)723Colored for easieridentificationP5200 Red231 (87)77/52112048 (46)753Most metals, glass andceramics All one-part alcohol cureP5204314 (57)205/591120513 (55)862Film-forming Most plastics All3-606015 (59)784Improves inhibitionresistance Most plastics and metals All two-part addition cure92-023-13 (9)681Most metals, glass andceramicsSylgard®Prime Coat-13 (9)6881P5200 Clear is a low-VOC alternative to 1200 Clear.2P5200 Red is a low-VOC alternative to 1200 Red.3P5204 is a low-VOC alternative to 1204.4The lower VOC value is for states and air quality management districts that have recognized volatile methylsiloxanes as VOC exempt.PREPARING SURFACESIn applications requiring adhesion, priming will be required for the silicone encapsulants. See the Primer Selection Guide for the correct primer to use with a given product. For best results, the primer should be applied in a very thin, uniform coating and then wiped off after application. After application, it should be thoroughly air dried prior to application of the silicone elastomer. Additional instructions for primer usage can be found in the Dow Corning literature, “How To Use Dow Corning Primers and Adhesion Promoters” (Form No. 10-366) and in the information sheets specific to the individual primers.USEFUL TEMPERATURE RANGESFor most uses, silicone elastomers should be operational over a temperature range of -45 to 200°C (-49 to 392°F) for long periods of time. However, at both the low and high tempera-ture ends of the spectrum, behavior of the materials and per-formance in particular applications can become more complex and require additional considerations.For low-temperature performance, thermal cycling to condi-tions such as -55°C (-67°F) may be possible, but performance should be verified for your parts or assemblies. Factors that may influence performance are configuration and stress sensi-tivity of components, cooling rates and hold times, and prior temperature history. There are specialized products including Dow Corning® 3-6121 Encapsulating Elastomer that can per-form at -65°C (-85°F) and below.At the high-temperature end, the durability of the cured silicone elastomer is time and temperature dependent. As expected, the higher the temperature, the shorter the time the material will remain usable.COMPATIBILITYCertain materials, chemicals, curing agents and plasticizers can inhibit the cure of Dow Corning silicone encapsulants. Most notable of these include:•Organotin and other organometallic compounds •Silicone rubber containing organotin catalyst •Sulfur, polysulfides, polysulfones or other sulfur-containing materials•Amines, urethanes or amine-containing materials •Unsaturated hydrocarbon plasticizers•Some solder flux residues concerns but may experience reversion in sealed applications at high temperature and pressure.REPAIRABILITYIn the manufacture of electrical/electronic devices it is often desirable to salvage or reclaim damaged or defective units. With most non-silicone rigid potting/encapsulating materials, removal or entry is difficult or impossible without causing excessive damage to internal circuitry. Dow Corning silicone encapsulants can be selectively removed with relative ease, any repairs or changes accomplished, and the repaired area repotted in place with additional product.To remove silicone elastomers, simply cut with a sharp blade or knife and tear and remove unwanted material from the area to be repaired. Sections of the adhered elastomer are best removed from substrates and circuitry by mechanical action such as scraping or rubbing and can be assisted by applying Dow Corning®brand OS Fluids.Before applying additional encapsulant to a repaired device, roughen the exposed surfaces of the cured encapsulant with an abrasive paper and rinse with a suitable solvent. This will enhance adhesion and permit the repaired material to become an integral matrix with the existing encapsulant. Silicone prime coats are not recommended for adhering products to themselves.HANDLING PRECAUTIONSDow Corning 255 Elastomer curing agent and uncured cata-lyzed material will burn skin and eyes upon prolonged contact. In case of eye contact, flush with copious amounts of water for at least 15 minutes and seek medical attention at once. Skin contact areas should be washed with soap and water. Persistent irritation should receive medical attention. Use only with adequate ventilation; if not available, use respiratory protection.PRODUCT SAFETY INFORMATION REQUIRED FOR SAFE USE IS NOT INCLUDED IN THIS DOCUMENT. BEFORE HANDLING, READ PRODUCT AND MATERIAL SAFETY DATA SHEETS AND CONTAINER LABELS FOR SAFE USE, PHYSICAL AND HEALTH HAZARD INFORMATION. THE MATERIAL SAFETY DATA SHEET IS A V AILABLE ON THE DOW CORNING WEBSITEAT , OR FROM YOURDOW CORNING REPRESENTATIVE, OR DISTRIBUTOR, OR BY CALLING YOUR GLOBAL DOW CORNING CONNECTION.Dow Corning and Sylgard are registered trademarks of Dow Corning Corporation.©2000, 2001, 2003, 2005 Dow Corning Corporation. All rights reserved.Printed in USA AGP7297 Form No. 10-898E-01minimized. Partially filled containers should be purged with dry air or other gases, such as nitrogen.Dow Corning 255 Elastomer should be kept refrigerated (10°C/50°F) until use. Any special storage and handling in-structions will be printed on the product containers.PACKAGING In general, Dow Corning silicone 1:1 mix ratio encapsulants are supplied in nominal 0.45-, 3.6-, 18- and 200-kg (1-, 8-, 40- and 440-lb) containers, net weight. Dow Corning silicone 10:1 mix ratio encapsulants are supplied in nominal 0.5-, 5-, 25- and 225-kg (1.1-, 11-, 55- and 495-lb) containers, net weight. Packaging options may vary by product. Consult Dow Corning Customer Service at (989) 496-6000 for additional packaging options.LIMITATIONS These products are neither tested nor represented as suitable for medical or pharmaceutical uses.HEALTH AND ENVIRONMENTAL INFORMATIONTo support customers in their product safety needs, Dow Corning has an extensive Product Stewardshiporganization and a team of Product Safety and Regulatory Compliance (PS&RC) specialists available in each area.For further information, please see our website,, or consult your localDow Corning e shall not be taken as inducements to infringe any patent. Dow Corning’s sole warranty is that the product will meet the Dow Corning sales specifications in effect at the time of shipment. Y our exclusive remedy for breach of such warranty is limited to refund of purchase price or replacement of any product shown to be other than as warranted. DOW CORNING SPECIFICALL Y DISCLAIMS ANY OTHER EXPRESS OR IMPLIED W ARRANTY OF FITNESS FOR A P ARTICULAR PURPOSE OR MERCHANTABILITY. DOW CORNING DISCLAIMS LIABILITY FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES.。
杜克系列弹性厚浆型质感涂料
杜克系列弹性厚浆型质感涂料培训记录★弹性质感涂料的优势乳胶漆：成本低，施工容易。
缺点：易开裂，涂抹厚度为75um；tge（玻璃化温度），温度越高，硬度越大，通常tge温度在20℃左右，而弹性涂料通常为-5℃至10℃之间，质感涂料通常10℃左右。
PVC＝填料的体积浓度（质感涂料由乳液、色浆、填料、助剂和水组成。
）PVC（计算造价成本）＝干填料/干填料+干乳液PVC高，耐洗性差，光泽丰满度好，原因是填料多，成本低，根本无法满足客户8－15年的质保要求。
杜克参照乳胶漆标准，承诺15年自然环保。
杜克经受了中国建筑材料科学研究院（建科院）1000h极限测试，并与建科院一起作为主编单位起草质感涂料标准，目前建科院最高极限测试为1000h，中国仅有杜克通过，超过1000h极限测试，建科院无法出具检测报告。
干填料：高岭土、云母、碳酸钙、氧化钡、石英砂。
钛白粉划入色浆（颜料），增加光泽度。
全球主要的钛矿出产地有美国、荷兰、中国和马来西亚。
目前市面上钛白粉的市场报价为：陶氏15000－16000元/T；国民淀粉10000－12000元/T；广东中山9000元/T。
乳液：水性涂料成份为乳液，添加无机颜料，主要优点为老化性好。
油性涂料成为为树脂，添加有机颜料，主要优点为颜色光鲜。
★原料来源乳液：美国罗门哈斯（2008年被美国陶氏收购）、陶氏（DOW）、巴德夫（富）、广东中山。
颜料：钛白粉：金红石型（二氧化钛含量90%），主要用于外墙；锐钛型（二氧化钛含量70%），主要用于内墙；色浆：瑞士科莱恩（专业生产色浆厂家），水性涂料。
色浆由白、黄、红、绿、蓝、黑综合调制而成。
杜克适用金红石型钛白粉，使用品牌为杜邦、科美奇（市价26000元/T左右），一般品牌使用四川龙蟒（13000元/T左右）。
★质感涂料市场主要竞争对手主要品牌：立邦、多乐士（ICI）、华润、申纽力/丽（PPG）、申德欧（STO）、SKK、亚士、上海铃鹿、固克、涂耐可、紫荆花、诺格/威诺、富斯特。
达克罗涂层盐雾标准
ZNFE SW酸洗酸洗磷化锌/抛丸磷化锌/抛丸酸洗锌铁锌铁KL100KL100锌镍Delta Coll80 黑Delta Coll80 GZ 黑VH301 GZDelta Coll80 黑240h120h480h480h480h720h720h(中性盐雾)720hGS 9w10ZNFE SW ZNS2 ZNS3BMW宝马GS 90010ZNNID SWDelta Coll80 GZ 黑Delta Coll80 无色ZNNID SI40/ZNS酸洗锌镍Delta Coll80 GZ 无色磷化锌/抛丸Delta-Tone磷化锌/抛丸Delta-Tone磷化锌/抛丸Delta-ToneDelta-Seal GZ 黑Delta-Seal GZ 银灰240h480h360h防腐要求白锈红锈240h400h/1000h120h 允许有10%出现白锈120h 允许有10%出现白锈A:360hB:240hA:360hB:240hA:360hA:120h＜10%透明B:240hB:144h黑色Delta-Seal72h微变化288h 允许有5%白锈72h288h 允许有5%白锈72h微变化288h72h288hB:144hDelta Coll80 GZN600 00.050/ZNS55/ZNS SI厂家标准GM 7111MGM 7114M表面要求银灰前处理磷化锌/抛丸磷化锌/抛丸底涂层Delta-ToneKL100电镀锌三价铬蓝白钝化面涂层Delta-Seal 银灰Delta-SealDelta Coll80 GZ透明Delta Coll80 GZ A6-X-V/B6-X-V酸洗A7-X-V/B7-X-VGME00252A8-X-V/B8-X-V 酸洗电镀锌三价铬钝化透明Delta Coll80 GZ 酸洗电镀锌三价铬钝化B9-X-V 通用GMABCEFGMW14银灰GMW3359黑色酸洗磷化锌/抛丸磷化锌/抛丸锌铁三价铬黑色钝化Delta-Tone288h 允许有轻288h 允许有轻GME00255磷化锌/抛丸Delta-Tone/KL100 Delta-Seal/VH300磷化锌/抛丸磷化锌/抛丸Delta-Tone/KL100或VH302 GZ磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸KL100KL100KL100Delta-SealDelta-Seal GZM 银灰Delta-Seal GZM 黑色Delta-Seal GZDelta-Seal GZ144h＜5%144h＜5%480h480hofl-r642 ofl-r643 ofl-r645ofl-r672酸洗酸洗酸洗酸洗锌镍蓝白钝化锌镍蓝白钝化锌镍蓝白钝化锌镍，黑色Delta Coll80Delta-Lube无色120h/240h240h120h/240h120h/240hDelta Coll80 GZ 无色TL244ofl-r673酸洗（三价铬钝化）锌镍，黑色Delta Coll80 黑（三价铬钝化）锌镍，黑色ofl-r677 ofl-t602 ofl-t610酸洗（三价铬钝化）Delta-Lube无白锈，允许有轻微的白斑240h120h/240hTL245ofl-t611ofl-t647ofl-t330 VW大众TL233ofl-t350ofl-t650ofl-t630TL242TL265NANANANAofl-c341ofl-c343TL217ofl-c347ofl-c641ofl-c643ofl-c647ofl-s611TL196抛丸KL100VH300/VH301720h/480hDelta-Tone/KL100抛丸Delta-Seal120h240h480h酸洗酸洗酸洗酸洗酸洗酸洗酸洗酸洗酸洗酸洗酸洗电镀锌锌镍电镀锌锌镍电镀锌电镀锌电镀锌电镀锌电镀锌电镀锌电镀锌Delta-Seal GBDelta-SealDelta-FLEXSDelta Coll80Delta-LubeDelta Coll80 GZ 无色Delta Coll80Delta-Lube无色黑色无色480h240h72h168h72h168hDIN50017KK5 个周480h240h144h240h168h240h360hDelta Coll80 GZEK800/801期无变化（冷凝水试验）冷凝水试验30个周期无变化ofl-s617ofl-s621ofl-s627酸洗酸洗酸洗电镀锌锌镍锌镍EK800/801+TT-FluidEK800/801EK800/801+TT-Fluid冷凝水试验 5 个周冷凝水试验30期无变化个周期无变化冷凝水试验15 个冷凝水试验60周期无变化个周期无变化厂商标准表面要求15/16前处理酸洗酸洗酸洗磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸底涂层电镀锌锌镍锌铁KL100KL100KL100KL100KL100KL100KL100Delta-ToneDelta-ToneKL100Delta-Tone面涂层防腐要求白锈168h480h/120h360h/120h红锈360h/240h720h600h/480h480h480h480h240h240h240h480h480h480h720h400h320hDBL845166/7686/964050Delta Coll80 GZ 无色润滑剂Delta-Seal GZ 银灰VH301 GZ Delta-Seal GZ 黑色Delta-Seal 黑VH300/Delta-SealDelta-Seal/GZDelta-Seal 黑Delta-Seal 黑Delta-Seal GZ 黑DBL奔驰DBL 9440DBL 9441PS 10633 PS 762640500010240h480hKL100Delta-Seal 银灰20Daimler-Chryster奔驰DBL 844021222330/4031/41磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸磷化锌/抛丸KL100VH300KL100KL100VH300KL100KL100VH301 GZKL100Delta-Seal GZ 黑色240h480hDelta-Seal 黑色Delta-Seal GZ 银灰480h240h480hDelta-Seal 黑色Delta-Seal 银灰480h240h480h240h480h。
纳米氧化物浓缩浆与纳米复合涂料
纳米氧化物浓缩浆与纳米复合涂料关键信息项：1、纳米氧化物浓缩浆的规格与质量标准成分及含量：＿___________________________物理性质：＿___________________________化学性质：＿___________________________2、纳米复合涂料的规格与质量标准配方组成：＿___________________________性能指标：＿___________________________适用范围：＿___________________________3、供货方式与时间交货地点：＿___________________________交货时间：＿___________________________运输方式：＿___________________________4、价格与付款方式单价：＿___________________________总价：＿___________________________付款条件：＿___________________________发票类型：＿___________________________5、知识产权与保密条款知识产权归属：＿___________________________保密期限：＿___________________________保密内容：＿___________________________11 协议背景本协议旨在规范纳米氧化物浓缩浆与纳米复合涂料的供应、使用及相关合作事宜，确保双方的权益得到充分保障，合作顺利进行。
111 纳米氧化物浓缩浆与纳米复合涂料的定义纳米氧化物浓缩浆是指含有特定纳米氧化物颗粒、具有一定浓度和特定性能的液体材料。
纳米复合涂料是由纳米氧化物浓缩浆与其他涂料成分复合而成，具有特定性能和应用的涂料产品。
12 产品规格与质量标准121 纳米氧化物浓缩浆纳米氧化物浓缩浆的成分及含量应明确，包括各种纳米氧化物的种类和比例。
杜邦钛白粉完全手册
1.55
4、干膜平光遮盖 很有趣的是，当空气渗入漆膜内。如调制颜料含量高的油时，基料本身的平均折射率减少，颜料和周
围介质之间的折射率差别加大，光线散射增多。室内油漆的配制者利用这种效应(有时称为干膜平光遮盖)， 以增进二氧化化钛的遮盖效率。 5、二氧化钛粒子大小
如果要有效地散射光线，二氧化钛颜料粒子的直径应该略小于散射光线波长的一半，因为肉眼对黄一 绿光(大约 0.55 微米)最敏感，涂料用二氧化钛颜料的平均直径在 0.2 和 0.3 微米之间。 6、散射能力和粒子大小
＜图 8＞光线在灰色漆中的散射和吸收 8、颜料体积浓度 PVC
因为干的油漆膜是一种三元结构，所以有理由预料，各个成份之间的体积关系，对油漆性能有重要作 用。颜料体积浓度是油漆内的全部颜／填料对整个不挥发物的体积比。就白色油漆来说： 颜料体积浓度％=颜料体积（二氧化钛+填充料）/（颜料体积+粘合剂体积）*100%
图 1a 反射散射 图 l 显示折射现象，其中球形表示二氧化钛粒子，由于漆膜中颜料粒子及基料折射率之不同、故当光 线穿越后、必然产生曲折现象。图 2 显示绕射现象。行进路线靠近二氧化钛粒子的光线受到弯曲、而分开 散射到许多方向。这一现象说明颜料在其临近区域对光的散射能力数倍于其粒子横截面内。
图 2 小粒子周围的光线衍射（绕射） 2、折 射 率
图 3 表示两个含颜料漆膜的横切面，演示了折射率的差别怎样影响光的散射和盖遮力。在含有高折射 率颜料的漆膜中(上图)光线比在含有低折射率颜料的漆膜中弯曲较多(下图)，所以射入漆膜之光线所经过 的路径长度较短，因而不能深入。实际上两种漆膜都呈白色不透明状，因为其皆没有存在吸收光线的粒子， 所以全部入射的光线亦都会返回表面。然而，如果漆膜厚度如虚线(X)所示，而且放在黑色背景上，那么， 含有低折射率颜料的漆膜能使部分光线进入黑色背景而被吸收，则漆膜就不会完全不透明，与白色的漆膜 相比较，则呈现灰色。
dowcorning树脂和中间体
427 800
538 1000 650 1200
427 800
80
805
80
840
60
50 806A
50 805
50
805
60
®
217 220
233 249
°C °F 260 500
100 315 600
100
315 600 100
427 800 100
/coatings
Dow Corning
123
1 121°C (250°F)
121-204°C (250-400°F)
760°C (1400°F)
204-316°C (400-600°F)
316-427°C (600-800°F)
427-538°C (800-1000°F)
5314
®
47 6 75 n/a 15002500
52 1 70 2.0/1 20004000
52 5 71 1.3/1 20004000
63 5 71 0.6/1 20004000
51 6 75 2.7/1 15002500
65 15-18
58 0.5/1 8001300
54 15-18
67 1.0/1 10001500
46 35 68 3.3/1
100
VOC , g/l (lb/gal) °C (°F)
1.34 138 (280)
1 2 3
4 1.5 g
5 6 7
SiO2 100%
135°C 275°F
3
EPA 24
100
1.33 138 (280)
道康宁有机硅组件封装项目
有机硅电池封装解决方案的介绍
11月15日, 2011
The information provided in this presentation does not constitute a contractual commitment by Dow Corning. While Dow Corning does its best to assure sure that information contained in this presentation is accurate and fully up-to-date, Dow Corning does not guarantee or warranty the accuracy or completeness of information provided in this presentation. Dow Corning reserves the right to make improvements, corrections and/or changes to this presentation in the future.
Dow Corning PROPRIETARY
Dow Corning PROPRIETARY
太阳能解决方案的持续投资
2006 2007 2008 2008 2008 2008 2008 2009 2009 2009
首次采用大规模制造工艺，生产具有商业可 行性的冶金原料 投资于Hemlock半导体公司10亿美元 投资于Hemlock半导体公司30亿美元，用来扩 大晶规生产 新的制造工艺降低了每瓦太阳能的发电成本 引入新的灌封剂 在密歇根弗里兰设立太阳能解决方案应用中 心 投资建设工厂，生产用于制作薄膜的单硅烷 在韩国成立新的太阳能解决方案应用中心 推出新的封装材料和加工方案 在加利福尼亚纽瓦克设立太阳能解决方案应 用和商业中心
吐温20质量标准
吐温20质量标准摘要：一、引言二、吐温20质量标准概述1.定义与分类2.质量指标三、吐温20的生产工艺1.原料与设备2.生产过程3.工艺优化四、吐温20的质量控制1.检测方法2.质量管理体系3.质量控制措施五、吐温20的应用领域1.涂料行业2.油墨行业3.塑料行业4.的其他应用六、我国吐温20产业现状与展望1.产业规模2.市场竞争格局3.发展趋势4.政策与法规七、总结正文：一、引言吐温20作为一种重要的表面活性剂，其质量标准在行业内具有广泛的影响力。
本文将对吐温20的质量标准进行详细解读，以期为行业内从业者提供有益的参考。
二、吐温20质量标准概述1.定义与分类吐温20，又称聚氧乙烯（20）烷基苯磺酸钠，是一种非离子型表面活性剂。
根据其分子结构和性能，吐温20可分为以下几类：常规型、高分子型、环保型等。
2.质量指标吐温20的质量指标主要包括以下几个方面：物理性质（如外观、溶解性等）、化学性质（如酸值、酯值等）、表面活性性能（如表面张力、泡沫稳定性等）以及微生物指标等。
三、吐温20的生产工艺1.原料与设备吐温20的生产主要采用聚醚、烷基苯磺酸钠等原料，生产设备包括反应釜、离心机、干燥机等。
2.生产过程生产过程主要分为三个阶段：原料预处理、反应、分离与纯化。
其中，反应阶段为关键过程，需严格控制反应温度、压力等参数。
3.工艺优化为提高吐温20的质量，可通过优化生产工艺，如改进催化剂、调整反应条件、提高产品纯度等途径实现。
四、吐温20的质量控制1.检测方法吐温20的质量检测方法包括：物理性能检测（如溶解性、表面张力等）、化学性能检测（如酸值、酯值等）以及表面活性性能检测（如泡沫稳定性、乳化性能等）。
2.质量管理体系建立完善的质量管理体系，确保生产过程中的质量控制措施得以有效执行。
3.质量控制措施质量控制措施主要包括：严格原材料进厂检测、控制生产过程关键参数、加强产品储存与运输管理、定期对生产设备进行维护保养等。
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Product InformationReleaseDow Corning ®20Release CoatingDESCRIPTIONDow Corning ® 20 Release Coating provides a durable parting film which effectively releases plastics, adhesives,and other elastomeric products that are sometimes difficult to release from mold surfaces, even with other silicones.HOW TO USEDilutionFor easier application and finercontrol of the amount applied to mold surfaces, Dow Corning 20 Release Coating should be diluted to one part coating to 5-10 parts solvent . If wetting is a problem, blend 10 partsRelease coating for plastics,adhesives,and elastomeric products APPLICATIONS•In fabricating plastic parts, provides durable parting film for epoxies,melamimes, methacrylates, phenolics, polyesters, and polyurethanes.•Releases silicone glass laminates and tubes and parts made from silicone molding compounds.•Provides release for wood forming operations, metal making, and rubber gaskets.TYPICAL PROPERTIESSpecification Writers: These values are not intended for use in preparing specifications.Please contact your local Dow Corning sales office or your Global Dow Corning Connection before writing specifications on this product.CTM*Property UnitValue 0005ColorColorless/light straw0208Active material content % w/w 500001A Specific gravity @ 77°F (25°C)g/ml 0.930004Viscosity cst 11.00021A Flash point - closed cup °C 32Solvent Stoddard andXyleneSuitable solvents Aliphatic andaromatic hydrocarbonsCTM: Corporate Test Method, copies of CTMs are available on request.FEATURES•Easy to use•Does not discolor molded parts •Solvent dilutable•In most cases, a single application provides release through numerous molding cyclesBENEFITS•Provides heat stable, non-carbonizing, non-oily parting film •Minimum build-up on molds and diesCOMPOSITION•Polydimethylsiloxane and high molecular weight silicone resin in solventDow Corning 20 Release Coating with 80 parts isopropanol (99%) and 10 parts toluene, rather than the previously mentioned solvents.Whenever using solvents, always provide adequate ventilation and follow the precautions on the manufacturer’s label.To break in molds with porous surfaces, a more concentrated solution – equal parts solvent and Dow Corning 20 Release Coating –may be used. Once the mold has been broken in, a more dilute solution may be used.07/18/00Dow Corning is a registered trademark of Dow Corning Corporation.Ref. No. 26-070-01FPH21961©2000 Dow Corning Corporation. All rights reserved.Frequency of application and proper concentration for optimum release should be established by small-scale trial runs under actual operating conditions before use in operation.After dilution, Dow Corning 20Release Coating can be applied by spraying, brushing, or wiping. Mold surfaces should be cleaned prior to application. Best partingcharacteristics are obtained when this product is applied in a very thin film.Avoid excess.Thick films do not give good release and may even cause sticking. Difficult release may also result from uneven dispersion or failure to wet surfaces completely. This may be corrected by rubbing out the release material until a thin, dry film is obtained.After application, allow the mold surface to dry until completely free of diluent. Because the solvents used to dilute Dow Corning 20 Release Coating may be flammable, special care must be taken when applying the dilution to hot surfaces.CureAlthough not essential, a heat cure produces better release and increased durability of the parting film. Heating the molds for 5-10 minutes at93-204°C (200 – 400°F) is suggested.HANDLING PRECAUTIONSDow Corning 20 Release Coating is supplied in a flammable solvent.Avoid heat, sparks, and open flame.Always provide adequate ventilation. PRODUCT SAFETYINFORMATION REQUIRED FOR SAFE USE IS NOT INCLUDED.BEFORE HANDLING, READ PRODUCT AND SAFETY DATA SHEETS AND CONTAINER LABELS FOR SAFE USE,PHYSICAL AND HEALTHHAZARD INFORMATION. THE SAFETY DATA SHEET ISA V AILABLE FROM YOUR LOCAL DOW CORNING SALES REPRESENTATIVE.USABLE LIFE AND STORAGEWhen stored at or below 30°C (86°F)in the original unopened containers,this product has a usable life of 24months from the date of production.This product is classed as aflammable, with a flash point of 32°C (89.6°F). Handle and store with appropriate precautions.P ACKAGINGThis product is available in 37.4- and 374-lb (17- and 170-kg) containers,net weight.Samples are available in 1-lb containers, net weight.LIMITATIONSThis product is neither tested nor represented as suitable for medical or pharmaceutical uses.Finishing Molded PartsThe silicone release film formed by Dow Corning 20 Release Coating may,in some cases, interfere with thepainting and bonding of molded parts.If a finish coat or bonding is involved,the effect of a silicone release agent should be thoroughly tested before use.Should painting or bonding of molded parts be an issue, Dow Corning offers release agents that are compatible with many organic coatings and adhesive systems. These alternative release products provide good release and offer the advantage that residual film transferred to the molded part can be removed from the molded part without requiring extraordinary cleaning procedures prior to painting or bonding. Information about these Dow Corning release materials is available upon request.HEALTH ANDENVIRONMENTAL INFORMATIONTo support customers in their product safety needs, Dow Corning has an extensive Product Stewardship organization and a team of Health,Environment and Regulatory Affairs specialists available in each area.For further information, please consult your local Dow Corning representative.W ARRANTYINFORMATION – PLEASE READ CAREFULL YThe information contained herein is offered in good faith and is believed to be accurate. However, because conditions and methods of use of our products are beyond our control, this information should not be used in substitution for customer’s tests to ensure that Dow Corning’s products are safe, effective, and fullysatisfactory for the intended end use.Dow Corning’s sole warranty is that the product will meet theDow Corning sales specifications in effect at the time of shipment. Y our exclusive remedy for breach of such warranty is limited to refund ofpurchase price or replacement of any product shown to be other than as warranted. Dow Corning specifically disclaims any other express or implied warranty of fitness for a particular purpose or merchantability. Unless Dow Corning provides you with a specific, duly signed endorsement of fitness for use, Dow Corningdisclaims liability for any incidental or consequential damages.Suggestions of use shall not be taken as inducements to infringe any patent.。