有机硅改性丙烯酸酯乳液压敏胶的研究进展

简述了有机硅改性丙烯酸酯乳液压敏胶常用的改性方法,论述了乳胶液的稳定性、结构、性能及其发展前景。     

有机硅改性丙烯酸酯核-壳结构压敏胶聚合物乳液的研制

采用种子乳液聚合的方法制备了一种新型具有核/壳结构的有机硅改性丙烯酸酯压敏胶聚合物乳液,讨论了多官能团有机硅氧烷功能性单体、核壳单体结构、乳化剂、引发剂以及聚合温度等因素对压敏胶聚合物乳液性能的影响。     

有机硅改性丙烯酸酯压敏胶

华南理工大学通过溶液聚合制成了聚丙烯酸酯预聚物，然后加入0.3％-0.5％的MQ硅树脂进行改性，得到了有机硅改性丙烯酸酯压敏胶，该胶可直接涂布于经电晕处理的聚酯膜上，制成压敏胶带，这种压敏胶及压敏胶带可在160℃以上长期使用，厂泛应用于电子，电器的绝缘包扎、高温遮蔽等领域。     

国内有机硅氧烷改性丙烯酸酯乳液研究进展

本文介绍了制备有机硅氧烷丙烯酸酯乳液的两种改性方法，并对各种乳液的近期研究成果进行了总结。     

有机硅改性丙烯酸酯聚合物研究进展

从物理共混和化学改性两个方面综述了有机硅改性丙烯酸酯的方法，重点介绍了缩（聚）合、硅氢加成、自由基共聚，讨论了无皂乳液聚合、壳／核乳液聚合和乳液互穿网络聚合等新型乳液聚合技术，其中性能优异、环保、多功能硅丙聚合物将是未来研究的重点。     

有机硅泡沫材料用有机硅改性丙烯酸酯压敏胶的研究

以MMA(甲基丙烯酸甲酯)作为硬单体、BA(丙烯酸丁酯)作为软单体和KH-570(硅烷偶联剂)作为有机硅单体,采用自由基溶液聚合法制备出一种硅丙-PSA(有机硅改性丙烯酸酯压敏胶),并着重探讨了该PSA对粘接低表面能SF(有机硅泡沫材料)的可行性。研究结果表明:硅丙-PSA对SF基材具有良好的粘接性能,并且对SF基材的压缩性能、耐热性能无显著影响;有机硅单体含量及PSA胶层厚度对180°剥离强度影响较大,当PSA胶层厚度为100μm、w(KH-570)=0.5%(相对于总单体质量而言)时,PSA的剥离强度(1.53 N/25 mm)相对最大;当w(KH-570)=1.0%时,PSA的综合粘接性能(如初粘力、持粘力和剥离强度等)相对最好。     

有机硅改性丙烯酸酯PSA的制备方法及应用研究进展

简述了有机硅改性丙烯酸酯PSA(压敏胶)的常用改性方法,重点介绍了乳液聚合、种子核/壳聚合和溶液聚合等方法;然后对丙烯酸酯PSA的应用领域(如医用领域等)进行了介绍。最后,对有机硅改性丙烯酸酯PSA的应用前景作了展望。     

保护膜用有机硅改性丙烯酸酯乳液压敏胶的研究

以八甲基环四硅氧垸（D1）、γ-甲基丙烯酰氧基丙基三乙氧基硅烷（KH-570）、六甲基二硅氧烷（MM）为主要原料,Me4NOH为催化剂和二甲基亚砜（DMSO）为促进剂,通过本体聚合合成了有机硅大分子。用该有机硅大分子和丙烯酸酯进行乳液共聚制得了有机硅改性丙烯酸酯乳液压敏胶,该压敏胶涂在PE膜上制成的保护膜贴在被保护表面能有效地抑制剥离强度的增长.     

有机硅改性丙烯酸酯最新乳液聚合方法研究进展

综述了几种有机硅改性丙烯酸酯复合乳液的聚合新方法,包括传统乳液聚合法、核壳乳液聚合、无皂乳液聚合、微乳液聚合以及细乳液聚合,详细介绍了各种聚合方法的特点和优势,最后指出了有机硅改性丙烯酸酯乳液的前景和发展方向。     

改性水性丙烯酸酯压敏胶研究进展

综述了改性水性丙烯酸酯压敏胶的最新研究进展,包括交联改性的水性丙烯酸酯压敏胶、有机硅改性的水性丙烯酸酯压敏胶、增黏树脂改性的水性丙烯酸酯压敏胶、纳米粒子改性的水性丙烯酸酯压敏胶和反应型乳化剂改性的水性丙烯酸酯压敏胶等。提出水性丙烯酸酯压敏胶的应用前景主要有以下3个方面:①高固含量的水性丙烯酸酯压敏胶;②多重改性的高性能水性丙烯酸酯压敏胶;③双组分水性丙烯酸酯类压敏胶。     

Effect of monomer concentration on the adhesive properties of acrylic pressure-sensitive adhesives

2-Ethylhexyl acrylate (2-EHA)-based co- and terpolymers were synthesized using n-butyl methacrylate (nBMA) and acrylic acid (AA) as comonomers. The change in adhesive properties with the change in monomer concentration was studied. The adhesive, cohesive, and tack characteristics were evaluated under standard conditions as specified by ASTM and/or the Pressure-Sensitive Tape Council (PSTC). The 2-EHA-co-nBMA copolymers showed a good balance between these three characteristics at 50% concentration of 2-EHA. It is noteworthy that with the AA concentration at or above 30% in 2-EHA-co-AA, the polyacrylates lose the tack which is necessary for adhesive bond formation. The 2-EHA-co-AA-co-nBMA terpolymers, where the 2-EHA content was kept constant at 50% and the AA content was varied from 1% to 10% with a corresponding variation in nBMA from 49% to 40%, showed an excellent balance between adhesive, cohesive, and tack strength.     

MQ硅树脂改性丙烯酸酯压敏胶的研究

采用溶液聚合法将含有乙烯基的MQ硅树脂共聚到丙烯酸酯链节之中,合成了硅树脂改性丙烯酸酯压敏胶。利用FT-IR对改性后的压敏胶进行结构表征,确定了硅树脂的加入时间和最佳用量。结果表明,在聚合反应先期或中期加入10%的硅树脂,制得的压敏胶性能优异。改性丙烯酸酯压敏胶在150℃下持粘性为2200s,室温180°剥离强度为14.5N/25mm,100℃的180°剥离强度为6.3N/25mm,在200℃热老化10h后,剥离强度仍达6.2N/25mm。     

丙烯酸酯类压敏胶的合成与性能研究

以丙烯酸丁酯（BA）、丙烯酸异辛酯（2-EHA）、醋酸乙烯酯（VAc）、丙烯酸（AA）、丙烯酸羟丙酯（HPA）为原料,乙酸乙酯为溶剂,过氧化苯甲酰为引发剂制备了五元共聚丙烯酸酯类压敏胶。考查了软单体组成、软硬单体配比、丙烯酸用量、丙烯酸羟丙酯加量、增粘树脂对压敏胶性能的影响。实验结果表明,当软单体m2-EHA：mBA=2：1、软硬单体的质量比为6：1、丙烯酸用量为5％、丙烯酸羟丙酯加量为8％、松香用量为5g时,压敏胶性能较佳。     

水性丙烯酸酯压敏胶研究进展

综述了水性丙烯酸酯压敏胶研究进展,包括交联的水性丙烯酸酯压敏胶、有机硅-丙烯酸酯压敏胶、增粘树脂-丙烯酸酯压敏胶、纳米粒子丙烯酸酯压敏胶等,指出了水性压敏胶未来的发展趋势。     

保护膜用耐高温溶剂型丙烯酸酯压敏胶的研究

以丙烯酸酯为原料,通过改进的溶液聚合工艺,研制了表面保护膜用丙烯酸酯压敏胶。研究表明,聚合工艺(反应温度、单体浓度等)对压敏胶的耐高温性能有显著影响;丙烯酸可提高压敏胶的内聚强度;随着交联剂的用量从0．5％增大至1．5％,压敏胶的耐高温性能显著增加;当交联剂的用量为1．5％时,用该胶制成的保护膜可通过100℃,24h的耐热性能实验;提高剥离速度会导致保护胶带180°剥离强度的增加。     

Effect of trifunctional cross-linker triallyl isocyanurate (TAIC) on the surface morphology and viscoelasticity of the acrylic emulsion pressure-sensitive adhesives

Acrylic pressure sensitive adhesive (PSA) latexes were synthesized via a starved monomer-seeded semi-continuous emulsion polymerization process with butyl acrylate (BA), methyl methacrylate, acrylic acid (AA), 2-hydroxyethyl acrylate and trifunctional cross-linker, triallyl isocyanurate (TAIC). Influences of TAIC on the resultant latex and PSA properties were comprehensively investigated. The results indicated that latex particle size was independent of the amount of TAIC in the pre-emulsion feed, while the viscosity of the latex increased remarkably with TAIC content increased. Thermal gravimetric analysis result showed that the thermal stability of the polymers was improved significantly with the addition of TAIC. Besides, with the increase in TAIC content, gel content of the polymer increased significantly, while molecular weight between cross link points (M_c) and sol molecular weight (M_w, M_n) of the polymer decreased remarkably. Moreover, for the cross-linked adhesive film, the shear strength was improved greatly while at the sacrifice of loop tack and peel strength, when compared with the uncrosslinked counterparts. Finally, dynamic mechanical analysis and atomic force microscopy were also used to evaluate the viscoelastic properties and surface morphology of the acrylic emulsion PSA film, respectively.     

丙烯酸酯胶粘剂研究进展

分析了丙烯酸酯的反应特点 ,介绍了以丙烯酸酯主要原料的几种胶粘剂的组分及其应用 ,讲述了当今国内外丙烯酸酯胶粘剂的研究趋势和研究进展     

Effects of miscibility on probe tack of natural-rubber-based pressure-sensitive adhesives

Natural rubber (NR) was blended in various ratios with 29 kinds of tackifier resins, which were prepared from rosin, terpenes, and petroleum. Miscibilities of all the blend systems were illustrated as phase diagrams in our previous articles. From these blend systems, we selected 7 systems having typical phase diagrams [completely miscible, completely immiscible, and lower critical solution temperature (LCST) types] and carried out measurements of probe tack. Probe tack values were measured at various rates of separation and temperatures to obtain master curves. In the case of miscible pressure sensitive adhesives (PSAs) at the condition of measurement, the peak position in the master curve of probe tack shifted to the lower velocity (higher temperature) as the tackifier content increased. On the contrary, immiscible PSAs had much smaller probe tack values than miscible ones and did not give manifest shift of peaks. © 1998 John Wiley & Sons, Inc. J. Appl. Polym. Sci. 70: 771–776, 1998     

丙烯酸酯乳液医用压敏胶的研究进展

综述了乳液型丙烯酸酯类医用压敏胶的性能特点以及各种改性方式的研究进展。通过加入增粘树脂、有机硅改性,采用反应性乳化剂、核／壳乳液聚合或接枝改性等方法提高其粘接强度,改善耐水性、耐温性及涂布性能,并对其应用前景进行了展望.