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本文介绍了压敏胶粘剂及其制品的发展沿革,阐述了各类压敏胶粘剂的基本性能特征,指出压敏胶剂及其制品的发展趋势,提出压敏胶粘剂制备和涂布技术进步的核心是压敏胶粘剂形态的不断更迭。 相似文献
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实心压敏胶粘剂聚合物微球的制造工艺 WO 0 2 0 0 74 2(2 0 0 2 - 0 1- 0 3)采用一种丙烯酸酯单体、一种甲基丙烯酸酯单体、一种与上述单体可共聚的离子型单体和一种可聚合的酸进行共聚,形成了一种实心的压敏胶粘剂微球,并且降低了残余而未转化的离子型单体含量。这种微球用作可重新定位的压敏胶粘剂,可减少剥下时的残胶。当转化率达到90 %以后,在聚合物中加入一种水溶性引发剂,可使未转化的残余离子型单体进一步降低。热敏胶粘剂组成及其标签制品 JP 2 0 0 32 0 14 5 7(2 0 0 3- 0 7- 18)这种胶粘剂在通常温度下没有胶粘性,所以,无需防… 相似文献
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水基阻燃压敏型地板胶粘剂是一种粘接地面装饰材料的粘合剂。本文介绍了该胶粘剂的合成工艺及设备、产品性能、产品的应用情况。采用了种子乳液聚合工艺,引入阻燃元素,合成高固含量、低粘度乳液,同时赋予产品阻燃性、压敏性。 相似文献
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本文通过对北京东方化工厂生产的丙烯酸酯乳液压敏胶粘剂PS—9317性能的分析,提出用自制的松香树脂改性剂与PS—9317进行共混的方法,来提高丙烯酸乳胶的180°剥离力和持粘力等性能,从而为生产高粘接强度的压敏胶粘带提供了一种新的压敏胶粘剂。 相似文献
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The transient extensional viscosity of non-crosslinked pressure sensitive adhesives (PSA's) and physically-crosslinked PSA's is measured and compared with theoretical predictions based on the linear viscoelastic (LVE) properties of the PSA's and the use of linear and quasi-linear constitutive equations. Based on a previously-derived expression for the relative contributions of individual relaxation modes of a polymeric material to its transient extensional viscosity, a criterion for whether large extensional deformations can be modeled on the basis of the LVE spectrum is proposed and evaluated for each PSA. The relevance to adhesion is demonstrated in peel tests, where the deformation of adhesive is quantified in images of the peel front under the assumption of uniaxial elongation and used to obtain theoretical peel forces in excellent agreement with measurements. This demonstrates the applicability of the criterion to the peeling process. 相似文献
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丙烯酸酯压敏胶粘剂的紫外光交联技术研究 总被引:7,自引:0,他引:7
通过将交联单体甲基丙烯酸环氧丙酯共聚引入到丙烯酸酯主链结构中,用二芳基碘Weng六氟锑酸盐在紫外光激发下引发环氧基交联,从而制得一种综合性能优良的紫外光交联型压敏胶粘剂,并且系统研究了紫外光剂量,光引发剂用量,交联单体用量等因素对压敏胶综合性能的影响。结果发现紫外光交联是提高压敏胶持粘强度和耐温性能的一种有效手段。 相似文献
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S. Naruse H. J. Kim T. Tsukatani M. Kajiyama A. Takemura H. Mizumachi Y. Hatano 《The Journal of Adhesion》1994,47(1):165-177
The influence of miscibility of an acrylic PSA and several tackifier resin systems upon PSA performance was investigated. When the acrylic copolymer and the resins were blended in various proportions, three types of mixing state were found: miscible system, partially miscible system and immiscible system. In the case of miscible systems, PSA performance (tack, peel strength and shear resistance) depended upon the viscoelastic properties of the PSA. In the case of completely immiscible systems, the above PSA performance depended primarily upon the viscoelastic properties of a continuous matrix phase, and the separated resin phase acted as a kind of filler. In the case of partially miscible systems, the PSA performance changed discontinuously at the resin concentration where phase separation occurred. It suggests that the phase structure of a PSA greatly influences the PSA's performance. 相似文献
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反光膜用聚丙烯酸酯压敏胶的合成 总被引:1,自引:1,他引:0
以醋酸乙烯酯(VAc)为硬单体、丙烯酸异辛酯(EHA)和丙烯酸丁酯(BA)为软单体、丙烯酸(AA)和丙烯酸羟丙酯(HPA)为交联单体、过氧化苯甲酰(BPO)为引发剂和乙酸乙酯为溶剂,制备了反光膜用溶剂型聚丙烯酸酯PSA(压敏胶)。考察了各单体和引发剂含量对PSA性能的影响。结果表明:当w(VAc)=15%、m(EHA)∶m(BA)=3∶1、w(AA)=4%、w(HPA)=6%和w(BPO)=0.8%时,PSA的综合性能优异,并且完全满足反光膜的使用要求。 相似文献
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对由SBS(苯乙烯-丁二烯-苯乙烯嵌段聚合物)和丙烯酸酯类单体组成的胶液进行紫外光(UV)辐照固化,制备压敏胶(PSA)。采用UV-DSC(差示扫描量热法)、FT-IR(红外光谱)等检测手段对UV固化胶液的聚合反应过程、PSA的结构进行了表征和分析,并提出了简单的结构模型。结果表明:胶液中的丙烯酸酯类单体发生自由基聚合反应,并与SBS发生接枝和交联反应,形成半互穿聚合物网络(semi-IPN)结构;固化后PSA的交联程度随SBS用量的增加而增大;当w(SBS)=5%时,PSA的凝胶含量可达到46%;在UV辐照下,SBS/丙烯酸酯胶液的反应速率随UV辐照强度或光引发剂用量的增加而增大,固化反应在80s内已基本完成。 相似文献
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