共查询到19条相似文献,搜索用时 328 毫秒
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无“三苯”无“卤代烃”多用途氯丁橡胶胶粘剂的研制 总被引:1,自引:0,他引:1
以乙酸甲酯和C型环保油为混合溶剂,以三乙醇胺为非水催化剂,采用酚醛树脂(PF)和活性氧化镁为原料制备螯合物;然后以氯丁橡胶、白炭黑、氧化锌、螯合物和混合溶剂等为原料,制备出一种无"三苯"无"卤代烃"多用途氯丁橡胶胶粘剂。结果表明:该胶粘剂的最佳配方(以质量份计)为氯丁橡胶145份[m(CR2442)∶m(DCR-25)=80∶65],白炭黑20份,氧化锌10份,螯合物120份,混合溶剂700份[m(乙酸甲酯)∶m(C型环保油)=40∶60];由最佳配方制取的氯丁橡胶胶粘剂,其不挥发物含量为23.99%、黏度为2750 mPa·s、初粘剪切强度为1.65 MPa和剪切强度为2.88 MPa,并且其各项性能符合HG/T 3 738-2004标准,其有害物质含量符合GB 18.583-2008标准。 相似文献
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由氯丁橡胶和低分子量的烷基酚醛树脂组成的胶粘剂,由于对各种性质的被粘材料(金属、橡胶、塑料、皮革、织物等)具有粘结特性,使用又简便,故是最常用的溶剂型胶粘剂之一。在苏联胶粘剂工业中这种类型胶粘剂(等)的总产量已超过了其他各种类型商品胶粘剂的产量。因此,全面了解对这类胶粘剂的质量和粘合强度有着决定性影响的诸因素是很重要的。 相似文献
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共缩聚间苯二酚酚醛胶粘剂的合成研究 总被引:6,自引:1,他引:5
以间苯二酚、苯酚、甲醛为原料,用共聚缩的方法合成了间苯二酚酚醛树脂胶粘剂;考查了间苯二酚与苯酚物质的量比、酚与醛物质的量比、预反应时间等因素对胶粘剂凝胶时间与剪切强度的影响;发现在预反应时间1h、苯酚与间苯二酚物质的量比为4:1、酚与醛物质的量比为1:1时,合成的共缩聚间苯二酚酚醛胶粘剂剪切强度为6.68MPa,固含量为58.5%;与聚醋酸乙烯酯乳胶相比,其剪切强度高,室温固化速度快,适合作木材粘接用胶。 相似文献
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我们通过不同条件的酚醛树脂热反应,获得了一种油溶性的高熔点物质,它与粘接型氯丁混炼胶液有良好的相溶性,从而克服了胶粘剂的相分离,也提高了胶粘剂的耐热性能及粘接强度。实验路线是:选择叔丁基酚醛树脂与 MgO 热反应的新催化体系。一、叔丁基酚醛树脂与 MgO 热反应机理 相似文献
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通过正交试验研究酚醛树脂/氯丁橡胶(CR)胶粘剂主要成分对45~#钢与天然橡胶(NR)粘接性能的影响,通过极差分析确定因子与水平优化组合,并进行试验验证。结果表明,酚醛树脂/CR胶粘剂中白炭黑用量、偶联剂种类和酚醛树脂用量是影响45~#钢与NR粘接性能的主要因素,胶粘剂主要成分优化组合为4份白炭黑、80份酚醛树脂、20份氯化天然橡胶和8份偶联剂KH550,该优化组合下制得的胶粘剂的耐热性能与胶膜耐水性能良好,45~#钢与NR粘接的单向拉伸剪切强度可达4.57 MPa。 相似文献
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苯乙烯-丁二烯-苯乙烯的三嵌段共聚物(SBS),可很好地溶于非苯混合溶剂,特别适宜制作环保型胶黏剂。SBS售价大致是氯丁橡胶售价的一半偏上,具有明显的价格优势。用SBS胶黏剂在制鞋领域取代氯丁胶黏剂的研究非常活跃。研究了增黏树脂的种类、SBS类型及配比、增黏树脂与SBS配比、同含量和JQ-6等对各种制鞋面料与化学片粘接性能的影响。SBS801与SBS792的质量比为1:3~2:1较为适宜,增黏树脂占25%~30%为宜,理论固含量为25%-30%为宜,JQ-6用量为0.5%左右为宜,所制得SBS胶黏剂对各种制鞋面料与化学片粘接性能超过氯丁胶,且耐水、耐盐性能良好。 相似文献
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《Journal of Adhesion Science and Technology》2013,27(13):1483-1495
Three phenolic resins were used to study the effect of resin structure and its percentage content on the bonding properties of nitrile rubber-based adhesives. The phenolic resins studied are derived from phenol, resorcinol and para-t-butyl phenol, and are of novalac type. These resins were characterized by infra-red and thermal studies. Several formulations were prepared by varying the phenolic resin/nitrile rubber ratio and these formulations were tested for viscosity and bonding properties. At a given resin-to-rubber ratio, the viscosity for resorcinol-formaldehyde resin was higher than phenol-formaldehyde resin followed by para-t-butyl phenol-formaldehyde resin. The peel strength of nitrile rubber-based adhesive prepared from resorcinol-formaldehyde resin was higher than adhesives that from para-t-butyl phenol-formaldehyde resin followed by phenol-formaldehyde resin. The lap shear strength of nitrile rubber-based adhesive containing para-t-butyl phenol-formaldehyde resin was higher than of adhesives containing the other two resins. The trend observed in peel strength could be explained on the basis of hydrogen bonding between hydroxyl groups of phenolic resin (adhesive) and hydroxyl groups of the starch-coated canvas cloth (adherend), whereas the trend observed in lap shear strength could be explained on the basis of extent of linearity in the resin structure. 相似文献
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鞋用氯丁橡胶胶粘剂体系的研究 总被引:3,自引:2,他引:3
论述了鞋用氯丁橡胶胶粘剂配方的有关问题。在氧丁橡胶并用,以及对溶剂、固化剂、树脂等种类的选择和用量的确定等方面从理论上及实践上进行阐述。 相似文献
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《Journal of Adhesion Science and Technology》2013,27(2):181-193
Polychloroprene (neoprene) rubber in combination with phenolic resins is a versatile adhesive formulation. The phenolic resin used in this case was derived from a mixture of cardanol, a meta-substituted naturally-occurring substance, and phenol. Cardanol is the main ingredient of cashew nut shell liquid (CNSL), a renewable resource. This study aims to investigate the adhesive properties of cardanol-based resin when used in combination with two grades of polychloroprene rubber. The effects of varying the solid content and resin content, choice of resin, fillers, crosslinking agents, adhesion promoters, solvents, etc. in the adhesive formulations were also studied. Moreover, relative proportions of rubber and resin that give optimum adhesion performance were identified. The results show that cardanol-phenol-formaldehyde resin is an effective ingredient in adhesives for bonding aluminium to aluminium and SBR to SBR. The addition of 3-aminopropyltriethoxysilane to the formulation improves the bond strength of metal-to-metal specimens. 相似文献
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以丁腈胶乳改性水基酚醛树脂为胶粘剂,分别以玻璃纤维和复合包芯纱纤维为增强材料,采用两种新型丁腈复合填料[含9%硫化丁腈橡胶(NBR)和含20%未硫化NBR]为主要填料制备高性能离合器摩擦材料。实验结果表明,当m(9%硫化NBR)∶m(20%未硫化NBR)=1∶1[即W(NBR)≈16%]时,制取的摩擦材料具有良好的摩擦磨损性能、适中的硬度、良好的冲击强度和较低的噪音。 相似文献