共查询到19条相似文献,搜索用时 62 毫秒
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丙烯酸酯乳液压敏胶的研制 总被引:3,自引:0,他引:3
采用乳液聚合方法合成了丙烯酸酯压敏胶,探讨了乳化剂种类及用量、丙烯酸酯、交联单体、pH值对压敏胶性能的影响。实验结果表明:阴离子乳化剂与非离子乳化剂(质量)比为4:6、乳化剂用量为1.5g/L、乳液压敏胶性能在半年内无变化;丙烯酸丁酯与丙烯酸乙酯质量之比为94:6时,压敏胶的初粘性为15^#,持粘性为48h;交联单体N-羟甲基丙烯酰胺用量为2%时,压敏胶的初粘性为15^#,持粘性大于48h;乳液压敏胶的pH值为3~6时,压敏胶的初粘性大于15^#,持粘性大于48h。 相似文献
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针对乳液型丙烯酸酯PSA(压敏胶)的耐水性较差、耐高温性欠佳及涂布干燥速率较慢等弊病,综述了乳液型丙烯酸酯PSA的最新研究方向及进展(包括高固含量乳液型丙烯酸酯PSA、乳液型交联丙烯酸酯PSA、低表面能材料粘接用乳液型丙烯酸酯PSA和耐水性乳液型丙烯酸酯PSA等);最后对其应用前景进行了展望。 相似文献
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介绍了乳液型丙烯酸酯医用压敏胶的合成方法,研究了各种因素对胶粘剂性能的影响。对溶剂型和乳液型丙烯酸酯医用压敏胶的性能进行了比较。 相似文献
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Self-crosslinking fluorinated polyacrylate latexes based on butyl acrylate (BA), fluorine monomer octafluoropentyl methacrylate (OFPMA), self-crosslinking functional monomers acrylic acid (AA) and 2-hydroxyethyl acrylate (HEA) were synthesized by a monomer-starved seeded semi-continuous emulsion polymerization process. The latexes and their corresponding films were characterized by laser particle size analyser, Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), contact angle goniometer, X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). Results indicated that the particle size of the latexes and the gel content of the films were both independent of the amount of OFPMA employed. On the other hand, the particle size of the latexes decreased and the gel content of the films increased with the incorporation of AA and HEA as expected. Glass transition temperature (Tg) and the thermal stability of the copolymer were both improved gradually as OFPMA content increased. XPS, AFM and water contact angle measurement indicated that the fluoroalkyl groups had a tendency to enrich on the surface of the films. However, this enrichment of fluorine on the film surface was reduced after the introduction of self-crosslinking functional monomers into the system. Finally, the adhesive property of the latexes was evaluated for application as a pressure sensitive adhesive (PSA). 相似文献
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溶液型SBS压敏胶粘剂的研制 总被引:6,自引:0,他引:6
试验了SBS、溶剂、增粘树脂和软化剂品种以及用量不同对胶液性能的影响;通过试验确定了基础配方;并介绍了投放大生产后产品供用户使用情况。 相似文献
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溶剂型丙烯酸酯压敏胶的研究 总被引:10,自引:0,他引:10
费永诚 《化学工业与工程技术》2003,24(1):4-6
采用自交联聚合工艺合成具有较好粘结性能和耐热性能的溶剂型丙烯酸酯压敏胶。通过分析测试 ,对影响压敏胶性能的一些因素 ,如单体比例、改性单体和交联剂的用量进行了研究 相似文献
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In this article acrylate pressure sensitive adhesive (PSA) latexes were synthesized via a pre-emulsion seeded semi-batch emulsion polymerization process with a conventional nonreactive surfactant (CO-436) and two polymerizable surfactants (traditional surfmer SE-10N and environment-friendly surfmer SR-10). The effects of surfactant contents on the particle size, zeta potential, electrolyte stability of the latexes and gel content, sol molecular weight (Mw, Mn), water absorption of the PSA copolymers were investigated. In addition, X-ray photoelectron spectroscopy (XPS) and contact angle measurements were used to characterize the latex films. The results showed that the particle sizes of latexes prepared with surfmers were smaller than their CO-436 containing counterparts. And the latexes prepared with surfmers had a lower storage stability than the one prepared with CO-436. However, surfmers can improve the electrolyte stability of the latex. Furthermore, the water resistances of the latexes prepared with surfmers were better than that of the latex with CO-436, which can be confirmed by water absorption, contact angle and XPS analysis. The results also indicated that the PSA prepared with SR-10 exhibited the highest gel content among the three surfactants. Finally, the effects of surfactants on the adhesive properties of the PSAs were also evaluated. 相似文献
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医用丙烯酸酯乳液压敏胶的研制 总被引:1,自引:2,他引:1
叙述了医用丙烯酸酯乳液压敏胶的合成与性能。并且讨论了软、硬单体配比,宫能单体含量及乳化剂用量等因素对压敏胶粘度、快粘力、持粘力、剥离强度等性能的影响。 相似文献
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接枝型橡胶压敏胶带的研究 总被引:2,自引:0,他引:2
橡胶接技时应选择合适的弹性体和单体。当m(NR):m(SBR):m(CR)=100:(30~50):(8~12);m(MMA):m(BA):m(官能单体I 官能单体Ⅱ)=100:(20~30):(8~12)时,较易接技且接技反应易于控制。接技工艺条件应随橡胶配比的变化而变化。选定配方的工艺条件为:单体分2次投料,反应温度为80~85℃,反应时间为2h。用萜烯树脂与少量低软化点的石油树脂以质量比100:(30~50)复配后作为增粘树属县有较好的增粘效果;用A、B2种交联剂可获得较好的耐温、耐溶剂性。 相似文献