Sikaflex-252 高强度结构胶粘结剂

合集下载

结构胶粘剂的种类和应用

结构胶粘剂的种类和应用

结构胶粘剂的种类和应用结构胶粘剂是一种具有高强度、高粘接性的粘合材料,通常用于连接各种材料并提供持久稳固的粘合效果。

结构胶粘剂的种类繁多,应用领域广泛,本文将就结构胶粘剂的种类和应用进行详细介绍。

一、结构胶粘剂的种类1. 丙烯酸类结构胶粘剂丙烯酸类结构胶粘剂是一种常见的结构胶粘剂,具有快速固化、高强度、耐候性好的特点。

它广泛应用于金属、玻璃、塑料、橡胶等多种材料的粘接,尤其适用于需要耐久性和高强度粘接的场合。

2. 硅酮类结构胶粘剂硅酮类结构胶粘剂具有耐高温、耐候性好、耐化学腐蚀等特点,适用于高温环境下的粘接,如汽车引擎室内部件的粘接、玻璃幕墙的安装等。

3. 聚氨酯类结构胶粘剂聚氨酯类结构胶粘剂是一种多功能结构胶粘剂,其特点是固化后具有柔韧性和强韧度,适用于各种材料的粘接,尤其适用于需要经受振动和冲击的场合。

4. 硫化类结构胶粘剂硫化类结构胶粘剂具有优异的耐高温和耐化学腐蚀性能,常用于需要在恶劣环境下长期使用的场合,如航空航天领域、石油化工设备等领域。

5. 双组分环氧类结构胶粘剂双组分环氧类结构胶粘剂是一种两部分混合固化的结构胶粘剂,具有优异的耐化学腐蚀性能和高强度粘接效果,适用于金属、陶瓷、混凝土等多种材料的粘接。

二、结构胶粘剂的应用1. 汽车制造结构胶粘剂在汽车制造中有着广泛的应用,包括车身焊接替代、风挡玻璃粘接、车身件粘接等。

结构胶粘剂能够提高汽车结构的整体强度,降低汽车的噪音震动,提高汽车的安全性和舒适性。

2. 建筑领域在建筑领域,结构胶粘剂被广泛应用于玻璃幕墙的组装、金属构件的粘接、混凝土构件的粘接等方面。

结构胶粘剂能够提高建筑材料的整体性能,降低材料的重量,简化建筑工艺,减少施工周期。

3. 航空航天在航空航天领域,结构胶粘剂的应用尤为重要。

航空航天设备需要经受复杂的力学环境和极端的工作条件,结构胶粘剂能够提供可靠的粘接效果,确保航空航天设备的安全可靠性。

4. 电子产品在电子产品制造过程中,结构胶粘剂被广泛用于电路板的粘接、电子元件的固定、设备的组装等方面。

Sika Marine弹性胶粘剂应用指南说明书

Sika Marine弹性胶粘剂应用指南说明书

SIKA MARINE APPLICATION GUIDEGeneral Marine Elastic Bonding ApplicationsGENERAL MARINE ELASTIC BONDING APPLICATIONSVersion 2/2017SIKA MARINE APPLICATION GUIDEGeneral Marine Elastic Bonding Applications CONTENT03Bedding and Sealing Fittings and Hardware05Bonding of Rub Rails and Fenders07Bonding Decorative Panels and Work Surfaces09Bonding Lightweight Internal Partitions11Elastic Thick Layer BondingBEDDING AND SEALING FITTINGS AND HARDWAREGENERAL DESCRIPTION All kinds of deck fittings and hardware need to be securely fixed and totally watertight. Some of these fittings can be subject to very high forces, suchas tensile, torsion and shear stresses. Poorly sealed joints can suffer serious damage such as metal corrosion, osmosis and water leaks which can cause damage to interior furnishings and fittings.BEDDING AND SEALING OF FITTINGSSUBJECT TO HIGH MECHANICALSTRESSESDeck fittings such as chain plates,winches and guide rollers must absorbvery high dynamic stresses.For this purpose a high-performanceproduct, such as Sikaflex®-292i, shouldbe used in conjunction with additionalmechanical fixings.BEDDING AND SEALING OF FITTINGSSUBJECT TO MINIMAL MECHANICALSTRESSESDeck fittings, such as ventilators and coverstrips, need to be waterproofed, but arenot subject to high tensile or torsionstresses.These fittings can be effectively beddedand sealed with only Sikaflex®-291i or ifthe joint remains visible and is exposedto weathering, the use of Sikaflex®-295UV is recommended.Fig. 1 A selection of cleats that can be sealed orbonded using Sika adhesivesFig. 2 Applying Sikaflex®-292iFig. 3 A port-hatch, both bonded and sealed usingSikafl ex®BEDDING AND SEALING FITTINGS AND HARDWARESUBSTRATE PREPARATIONTIMBER DECKSPAINTED DECKSBRONZE, BRASS ORSTAINLESS STEEL FITTINGSFor coloured metals please use onlySikafl ex®-295 UV or Sikafl ex®-591.ALUMINUM FITTINGSAPPLICATION OF Sikafl ex®-291i, -292i OR -295 UV ADHESIVESIMPORTANT:For the preparation of other sub-strates, please refer to the Sika Pre-Treatment Charts for Marine Applications.BONDING OF RUB RAILS AND FENDERSGENERAL DESCRIPTION Rub rails and fenders are designed to protect the hull of a vessel against damage. These act as a bumper to absorb impacts and scrapes, and the more elastic these are, the more effectively they perform this function.The elastic behaviour varies according to the type of material used, so the shock- absorbing performance of the rub rail can be significantly improved by the use of an elastic adhesive joint.This provides maximum protection to the hull.Rub rails of timber, PVC or polyurethane can be securely bonded to marine hulls using Sikaflex®-292i. The resulting elastic joint helps to absorb most of the shear and tensile stresses to which they are sub-jected when a vessel is docking or casting off.If rub rails are secured with screws, a similar effect can be obtained by back- filling the rail profile with Sikaflex®-291i;a highly elastic polyurethane sealant. As well as absorbing torsional stresses, this technology also seals the screw holes and prevents water or dirt from gettingbehind the rub rail.APPLICATION OF Sikafl ex®-292i OR Sikafl ex®-291iFig. 5 Sealing the edge of a chrome hand-railFINISHED PAINTED HULLS OFALUMINUM OR STEEL, COATED WITH A TWO-PART LACQUERTIMBER RUB RAILSMOULDED PVC OR POLYURETHANE BONDING RUB RAILS TO THE HULLSUBSTRATE PREPARATIONGRP HULLSTriangular beads of adhesive Hull (section)Rub railPress into positionFig. 4 Assembly of a rub railBONDING DECORATIVE PANELS AND WORK SURFACESGENERAL DESCRIPTIONThe interiors of many boats are based on a variety of traditional and modern materials including mirrored glass. These panels can be used functionally as working surfaces (galley worktops, etc.) or cosmetically. Either way, elastic bonding provides an easy, durable method of fi xing without visible and unsightly mechanical fi xings.As the variety of materials used for panels, surfaces and supporting substrates is so vast, please consult the local Technical Service of Sika Industry or proceed topreliminary trials.Fig. 9 Application of Sikafl ex®-291iAPPLICATION OF Sikafl ex®ADHESIVE TO HORIZONTAL PANELSFig. 7 Bonding a decorative panel verticallyBONDING DECORATIVE Fig. 6 Bonding a decorative panel verticallyBONDING LIGHTWEIGHT INTERNAL PARTITIONSGENERAL DESCRIPTIONThese lightweight panels are usually con-structed of wood sandwiches with internal polyurethane foam or honeycomb core. They are particularly suited as partitions for cabins and technical rooms as they are of lighter weight than wood fi lled panels and have good soundproofi ng properties. Due to the low density core, lightweight panels cannot be mechanically fi xed to the hull structures in the same way as tradi-tional plywood panels. However, bonding with Sikafl ex®-292i isan ideal replacement fi xing method thatalso possesses the fl exibility to respondto the movements and stresses of theassembly.The uniform stress distribution preventsdamages which may be result of stressconcentration (example screw).This process is also endorsed by themanufacturers of the lightweight panels.PartitionSupportTrimSikafl ex®-292iFig. 10 Sikafl ex®-292i bead application for bonding to the supportBONDING LIGHTWEIGHT INTERNAL PARTITIONSSUBSTRATE PREPARATIONPlease refer to the Sika Pre-Treatment Chart for Marine Applications. APPLICATION OF Sikaflex®-292i ADHESIVEFig. 11 Sikaflex®-292i applied to a lightweight panel prior to fitting Fig. 12 Lightweight panels being fitted to an open hullFig. 13 High-quality lightweight panels finished in traditional high-gloss wood veneer and bonded using Sikaflex®-292iELASTIC THICK LAYER BONDINGINTRODUCTIONFrom the earliest of times, boat construc- tion has relied upon the available techno- logy. Structural members needed to be attached to one another and everything would depend on the reliability of the bond. Trial and error would have exposed the weaknesses in design and construction and one of the costs would have been the loss of the vessel, if not of lives.As knowledge and experience was shared, so technology improved and in a symbiotic advancement, boat building and other industries benefited.Today, significant advances in adhesive technology have spurred a revolution in assembly techniques across all of industry. But none reap the benefits more than the marine industry.APPLICATIONDESCRIPTIONElastic thick layer bonding in respect ofthis manual refers to the method ofjoining the main structural componentsor components that contribute to thestrength and stability of the structure ofthe vessel.Elastic thick layer bonding is responsiblefor a completely different approach tovessel design. Whereas earlier techniquesworked from a rigid skeleton that had tobe strong enough to support the deck,hull, superstructure, windows, and fittings,the new approach uses all of these majorcomponents as the primary structuralmembers and uses the old skeletal partsin a lighter form to provide stiffening tothe structure.Each time that a screw was used to holda major component to the skeleton, itintroduced weaknesses in every part itpassed through and became a focal pointfor stresses.Marine architects had to take this intoconsideration during the design phaseand ensure that there were sufficientfixings placed evenly along the joint linesin order to distribute the stresses. Thelocation, size and type of every screwhad to be specified, drawn onto the plans,bought in and stored.The laminating method (taping) providesa far better alternative to this approachin most applications, with fewer compo-nents, a simplified design and betterstress distribution. But this method ishighly labour intensive and comes withnumerous health and safety issues.Elastic thick layer bonding from Sika isrelatively simple to design, tolerant ofdissimilar materials, very strong and dur-able, and besides having few health andsafety requirements, takes a fraction ofthe time of other techniques to assemble.DISCLAIMERThe information, and, in particular, the recommendations relating to theapplication and end-use of Sika products, are given in good faith based on Sika’s current knowledge and experience of the products when properly stored, handled and applied under normal conditions. In practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of mer- chantability or of fitness for a particular purpose, nor any liability arising out ofIn service, the inherent flexibility of the Sika structural adhesives evenly distrib-utes the stresses and the lightweight construction techniques result in a major weight saving and correspondingbuoyancy and performance increase in the vessel.For every structural application, national and international rules, regulations andapprovals must be observed.any legal relationship whatsoever, can be inferred either from this information, or from any written recommendations, or from any other advice offered.The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery. Users should always refer to the most recent issue of the Sika Product Datasheet for the product concerned, copies of which will be supplied on request.SIKA MARINE APPLICATION GUIDEGeneral Marine Elastic Bonding ApplicationsGLOBAL BUT LOCAL PARTNERSHIPOur most current General Sales Conditions shall apply.Please consult the Data Sheet prior to any use and processing.© S i k a S e r v i c e s A G / N D U S T R Y / M A R I N E / S I K A M A R I N E A P P L I C A T I O N G U I D E / T Z / 2.2017Who we areSika is a specialty chemicals company with a leading position in the de-velopment and production of systems and products for bonding, sealing,damping, reinforcing and protecting in the building sector and the motor vehicle industry. Sika has subsidiaries in 94 countries around the world and manufactures in over 170 factories. Its more than 17,000 employees generated annual sales of CHF 5.49 billion in 2015.FOR MORE MARINE INFORMATION:Sika Services AG Tueff enwies 168048 ZurichContact:Phone: +41 58 436 40 40Fax: +41 58 436 45 30/marine。

高性能室温固化环氧结构胶粘剂的研究

高性能室温固化环氧结构胶粘剂的研究
or
can
be stored stably with benzoyl chloride and TDI tripolymer with
methyI P.toluenesulfohate added
as
the
stabilizer(polyurethane prcpolymer
benzoyl chloride.the
polyurethane
as
middle
temperature
or
higII temperature
curing印oxy
adhesive.In current study,
improve the mechanical performance and heat resistance performance of eDoxy刚nK由删adhesive.The epoxy structural adhesive with free mechanical performance and heat resistance performance was prepare山
hours.nk accelerent can be
added ifnecessary,DMP-30
system.
was adopted for curing acc-5%in the adhesive
3.111e epoxy structural adhesive with hi【gh prepolymer,isocyanate
and the mechanism oftougbening
was studied.The main contents
are as
prepolymer,isocyanate tripolymer and

Sikaflex

Sikaflex

技术数据表版本 02 / 2007Sikaflex®-258风挡玻璃粘接胶技术数据表化学基础 单组分聚氨酯 颜色 黑色固化机理 湿气固化密度(未固化) 1.20kg/l抗下垂性 好表干时间1约55分钟施工时间 约30min. 固化速度13mm/24小时收缩率 约-6%邵A硬度 约55拉伸强度 >4.5N/mm2断裂延伸率 约600%剪切强度 >3.5N/mm2长期工作温度 -40°C-80°C 保质期 (25°C以下密封保存) 9个月1) CQP = Corporate Quality Procedures 2) 23℃/50% 相对湿度产品描述Sikaflex®-258是一种高性能的单组份玻璃粘接胶。

Sikaflex®-258暴露在空气中,和水汽反应生成永久性弹性体。

Sikaflex®-258按照ISO 9001/ 14001质量保证体系及相关防护规程生产制造的。

产品优越性-单组分配方-免底涂粘接-气味低-固化快-拉丝短-施工性固化机理Sikaflex®-258与大气中的湿气反应固化。

通常温度越低,大气中含有的水分也越低,所以反应的过程在某种程度上也会变慢。

(如下图所示)适用范围Sikaflex®-258适用于汽车原厂和维修市场的玻璃粘接。

耐化学性能Sikaflex®-258耐淡水,海水,石灰水,污水,稀酸稀碱溶液;短暂耐燃油、矿物油、植物油和动物脂肪;不耐有机酸碱溶液或溶剂。

上述说明只作为一般性的指导,对于特定的施工,如果需要,我们将提供建议。

更多信息请登陆: 西卡(中国)建筑材料有限公司 工业部 苏州工业园区泾东路28号 邮编:215121 电话:(86)512 62732888 传真:(86)512 62877070 E-mail: marketing@施工方法表面处理粘结面应清洁、干燥,无油脂、油和灰尘。

Sika无收缩二次灌浆料产品指南

Sika无收缩二次灌浆料产品指南

Sika无收缩二次灌浆料产品指南类别优点型号特点应用荷载用途水泥类灌浆料通用型灌浆料施工简单、流动性能好、收缩补偿、强度增长快、不含铁离子和氯盐、可操作时间长SikaGroutContruction经济实惠静态荷载结构荷载灯柱、电塔、立柱、重型机械的基础锚固普通型灌浆料SikaGrout 214性能稳定普通荷载冲击荷载动态荷载重型泵、鼓风机、冷凝塔、汽锅、发电机、绞盘、传送带、变速箱、中型碾碎机、大型锻锤、辊轧机的基础锚固超早强型灌浆料SikaGrout212HP1天强度55Mpa预应力管道灌浆料SikaGrout300PT用于封闭管道普通荷载预应力管道、电缆管道灌浆速凝水泥施工简单、永久止水、粘结力强Sika102Waterplug快速凝固高水压隧道、涵洞、水坝、地下室的止水堵漏环氧类灌浆料早强型环氧灌浆料精确双重收缩补偿,高强度,黏结力强,抗化学腐Sikadur 42HE早期强度高高动态荷载抗拉伸桥梁支座、起重机轨道、重型锻锤、压缩机的基座锚固低热型环氧灌浆料Sikadur 42LE发热少,适用于大体积浇蚀筑注射型环氧灌浆料Sikadur 752超高流动性封闭各种裂缝、大幅度提高结构的抗压、抗拉能力。

各品牌结构胶耐候胶对比

各品牌结构胶耐候胶对比

各品牌结构胶耐候胶对比结构胶是一种常见的粘接材料,用于固定和连接各种建筑和工程构件,如木材、金属、玻璃、混凝土等。

在选择结构胶时,耐候性是一个重要的考虑因素,特别是在户外使用的情况下。

本文将比较几种不同品牌的结构胶的耐候性能。

1.3M结构胶:3M是全球领先的品牌,其结构胶在耐候性方面表现出色。

3M的结构胶具有出色的耐候性,可以在负温度和高温环境下保持稳定的性能。

它们还能抵御紫外线辐射,防止颜色褪色和材料老化。

2. Sika结构胶:Sika是另一个著名的品牌,其结构胶也具有很高的耐候性。

Sika结构胶能够在恶劣的气候条件下保持稳定的性能,不会因高温或低温而脆化或变形。

此外,Sika结构胶还具有耐紫外线辐射和化学腐蚀的能力。

3.华夏结构胶:华夏结构胶是国内知名品牌,其产品在耐候性方面也有一定的优势。

它们可以承受不同温度和湿度条件下的使用,并保持良好的粘接性能。

然而,与国际品牌相比,华夏结构胶在耐候性上可能稍逊一筹。

4.BASF结构胶:BASF是另一家全球知名的化工公司,其结构胶具有出色的耐候性能。

BASF结构胶能够抵抗极端温度、紫外线以及化学腐蚀的影响,能够在户外环境中持久使用而不失效。

5. H.B.Fuller结构胶:H.B.Fuller是一家专业化学品制造商,其结构胶在耐候性方面表现不俗。

H.B.Fuller结构胶能够在不同气候条件下提供持久的粘接性能,经过很长时间的使用仍然保持稳定。

它们还具有抗紫外线辐射的特性,延缓颜色褪变和老化。

总之,各个品牌的结构胶都具有一定的耐候性能,但在选择时需要根据具体的使用环境和要求进行综合考虑。

一般来说,国际知名品牌如3M、Sika、BASF等具有更加可靠的耐候性能,而国内品牌如华夏、H.B.Fuller等虽然在耐候性上略逊一筹,但仍然能够满足大部分普通建筑和工程的需求。

在购买时,建议查看产品规格和说明,选择适合自己需要的结构胶。

双组份丙烯酸结构胶

双组份丙烯酸结构胶

双组份丙烯酸结构胶
双组份丙烯酸结构胶是一种由两个不同的组分组成的结构胶。

其中一组分是丙烯酸酯单体/预聚体,另一组分是引发剂/活性
剂/助剂等。

在使用前,将两个组分混合在一起,通过引发剂
引发聚合反应,从而形成聚合物网络结构。

双组份丙烯酸结构胶具有以下特点:
1. 高强度:由于聚合物网络结构的形成,该结构胶具有较高的强度和耐久性。

2. 高粘接性能:能够粘接多种不同的材料,如金属、塑料、玻璃等。

3. 快速固化:通过选择合适的引发剂和控制固化条件,可以实现快速固化,缩短生产周期。

4. 抗老化性能好:具有优良的耐候性和耐化学品性能,能够在恶劣环境下长期使用。

双组份丙烯酸结构胶广泛应用于建筑、汽车、航空航天、电子、家具等领域。

在建筑行业,常用于粘接和修补混凝土、石材、玻璃幕墙等;在汽车行业,常用于车身结构粘接和镶嵌密封等;在电子行业,常用于电子组件的粘接和密封等。

需要注意的是,双组份丙烯酸结构胶在使用过程中应遵守相关的安全操作规程,避免接触皮肤和眼睛,确保良好的通风条件。

高强度双组分聚氨酯胶粘剂的研制1

高强度双组分聚氨酯胶粘剂的研制1

研究报告及专论粘 接 2007,28(1)高强度双组分聚氨酯胶粘剂的研制罗纪明,桂武标,杨足明,马德军,夏进强(湖北回天胶业股份有限公司,湖北襄樊441003)收稿日期:2006-06-24作者简介:罗纪明(1967-),男,硕士,从事胶粘剂的研究。

已发表论文20余篇。

摘要:合成了E-己内酯-MOCA 加成物。

以聚碳酸酯二元醇,E -己内酯-MO CA 加成物以及M D I 为主体材料制备的双组分结构胶综合性能优异:剪切强度为27.7M Pa ,180b 剥离强度为5.22k N /m,定位时间为5m i n ,耐温100~120e 。

M OCA 或者E -己内酯-M OCA 加成物在聚氨酯胶粘剂中的含量大于临界含量时,胶粘剂的固化速度明显加快,粘接性能显著提高。

制备的双组分胶粘剂甲乙组分的最佳配比为10B 15.5,此时粘接强度最高,甲乙组分的配比对粘接强度影响较大。

关键词:双组分;聚氨酯结构胶;聚碳酸酯二元醇中图分类号:TQ 433.4+32 文献标识码:A 文章编号:1001-5922(2007)01-0005-03双组分聚氨酯胶粘剂广泛应用于食品包装、纸塑复合、土木建筑以及结构粘接、超低温粘接等场合。

在汽车制造业中已广泛采用塑料、玻璃钢、聚氨酯等作为结构材料,双组分聚氨酯胶粘剂以其优异的抗冲击性、耐久性、耐低温性、耐疲劳性和良好的施工性能而成为首选的胶粘剂。

但是,双组分聚氨酯胶在耐高温性能和粘接强度方面与环氧树脂和第2代丙烯酸酯等结构胶相比还存在较大的差距。

研究高强度双组分聚氨酯胶的国内文献很少,而且强度不高,文献[1]报道的一种双组分胶的剪切强度为14.9M P a ,文献[2~5]报道的最大剪切强度不足11.2M Pa ;瑞士SIKA 公司在其申请的专利[6]中介绍的一种快固型双组分聚氨酯胶的拉伸强度也不超过8.0M P a 。

因此,双组分聚氨酯胶在结构粘接方面的应用受到了很大的限制。

  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
—单组份构成
—具有弹性
—表面可喷漆
—良好的填缝性能
—承受高强度动载荷
—无腐蚀
—减震
—不导电
—可粘结多种材料
Sikaflex-252结构胶粘结剂
是按照汽车原厂最高级别标准质量控制,严格生产制造出的胶粘剂,为全球各大汽车原厂、机场、改装厂、4S维修中心广泛使用。
Sikaflex-252结构胶粘结剂技术数据:
Sikaflex-252结构胶粘结剂应用方法:
表面准备:
结合面必须清洁、干燥并去除各种油渍、蜡和灰尘。通常粘结面应当按照最新的SikaPrimerChart中的规定进行准备。Sikaflex-252结构胶粘结剂应用:
用工具修整及精修:
清洁:
其他:
硬包装:
刺穿筒嘴的铝膜即可。
软包装:
将胶放入胶枪并剪去封嘴,割去胶嘴顶端以打出所期望几何形状的胶条。为了保证胶层厚度一致,我们建议打出胶条截面应为三角形形状(如图所示)
未固化的Sikaflex -252可用Sika Remover208从工具或设备上除掉。而一旦固化后只能用机械的方法将其除去。
手及外露的肌肤粘上胶后应立即用适合的工业用洗手液和水清洗,不要使用溶剂。
如购买Sikaflex -252结构胶粘结剂产品的客户要求,我们可提供以下资料:
Sika底漆表、安全数据表、基础计算说明。
约6%
约为10个十次方Ωcm
约为-40℃
20%
-40℃~+90℃
120 ℃
9个月
Sikaflex-252结构胶粘结剂应用范围:
Sikaflex-252适合于在受动载荷的部位进行结构性的粘结。适用的材料包括木材、金属、尤其是铝(包括阳极氧化的部件)、钢板(包括磷化过、镀铬和镀锌的部件)、金属底漆和漆面(双组份)、陶瓷材料及塑料。
剪切强度(EN 1465)使用厚度4mm约为
2.5N/平方毫米
撕裂强度(DIN 53515)
收缩率(DIN 52451)
电阻系数(DIN 53482度(连续)
短期(最多8小时)
保质期(储存温度低于20℃)
注:
*在23℃及50%相对湿度下约9N/mm
Sikaflex-252结构胶粘结剂耐化学性:
Sikaflex -252结构胶:
1、对淡水、海水、石灰水、污水流、稀酸及稀碱具有阻性;
2、对燃油、矿物油、植物油、动物脂肪和原油具有短暂的阻性;
3、对有机酸、酒精、浓缩的矿物酸、浓碱和溶剂不具有阻性。
Sikaflex-252结构胶粘结剂固化方式:
Sikaflex-252通过与空气中的湿气反映而固化,通常温度越低,空气中含有的水份也越低,所以反映的过程也会变慢。
注意事项:
不要在低于10℃或高于35℃的环境中施工。对底材最适合的温度为15℃~25℃。用硬包装时,我们建议使用带活塞的气动枪施工。
用工具修正及精度必须在胶表干之前进行。Sika建议使用Sika TolllingAgentN作为修整剂。其他的修整剂或润滑剂必须事先做适应性或兼容性测试。
表面喷漆:
Sikaflex-252表干之后可在表面喷漆。但在喷漆之前应进行漆的兼容性测试。烤瓷,必须在Sikaflex-252完全固化后之后才能进行。漆层的厚度和硬度会消弱胶的弹性并导致漆层开裂。
Sikaflex-252
Sikaflex-252结构胶粘结剂说明
Sikaflex-252结构胶粘结剂是一种不下垂、高密度的膏状单组份聚氨酯粘结剂,其与大气中的湿气反应固化形成一种永久性的弹性物质。Sikaflex-252是严格按照质量保证体系生产制造的粘结剂。
Sikaflex-252结构胶粘结剂优越性:
化学组份
密度(DIN 53479)(未固化)
稳定性(不下垂性)
颜色
固化方式
表干时间*
固化率*
xxA硬度(DIN 53505)
断裂延伸率(DIN 53504)单组份聚氨酯
1.16-
1.22kg/L取决于颜色
很好
白,黑
湿气固化
约40分钟
约4mm/24小时
约为55
>300%
拉伸强度(DIN 53504)约为4N/平方毫米
相关文档
最新文档