光固化聚氨酯甲基丙烯酸树脂胶的研究

通过甲基丙烯酸与过量的异氰酸酯反应，制得聚氨酯甲基丙烯酸树脂胶粘剂。它可以用于光固化，得到的固化物具有优良的力学性能和储存稳定性。研究了某些因素对合成过程的固化性的影响。     

一种含氟的新型厌氧胶制备及性能研究

以六氟双酚A和环氧氯丙烷为主要成分加热缩聚合成有机氟环氧树脂，再与甲基丙烯酸反应制备甲基丙烯酸有机氟环氧树脂单体，引入厌氧胶体系，获得含氟的新型厌氧胶。研究有机氟环氧树脂和甲基丙烯酸的配比对贮存稳定性的影响，促进剂与助促进剂对固化速度的影响，不同间隙对固化强度的影响及耐介质性能。结果表明，有机氟环氧树脂和甲基丙烯酸的最佳比例为100∶40,促进剂与助促进剂同时使用固化速度最理想，最佳涂胶间隙(单边间隙)为0.010～0.020 mm满足耐介质性能的要求，具有良好的耐介质性。     

紫外光固化制备透明丙烯酸超亲水薄膜

以丙烯酸、甲基丙烯酸单体为低聚物,甲基丙烯酸羟乙酯、丙烯酸丁酯、丙烯酸异辛酯单体等作为活性稀释剂,以N-异丁氧基甲基丙烯酰胺作为交联剂,制备了紫外光固化涂料,再以聚碳酸酯片材为基底,通过均匀旋涂,采用紫外光固化的方法,制备透明超亲水薄膜。进行了涂料配方材料的选择实验,研究并分析了不同稀释剂、交联剂含量、固化时间等对涂层亲水性能的影响。结果表明,当丙烯酸∶甲基丙烯酸∶甲基丙烯酸羟乙酯∶丙烯酸丁酯=3∶3∶3∶1、交联剂量含量为10%、紫外固化时间为5 min时,制得的透明薄膜亲水性最佳,接触角可达到4. 08°,超亲水性良好,雾度低、透光率良好。     

液体氯丁二烯-甲基丙烯酸羟乙酯共聚物改性环氧树脂的制备和性能

本工作以液体氯丁二烯-甲基丙烯酸羟乙酯共聚物(CP-HEMA)作为环氧树脂的改性剂。研究了 CP-HEMA 用量和固化温度对环氧树脂力学性能的影响。通过固化仪测定了 CP-HEMA 与环氧树脂固化反应的速度以及固化温度对固化反应速度的影响。测定了固化物的热力学性能,并且讨论了固化物的相态结构。     

施工工艺

9805349采用新型的渗透固化法形成的高性能涂膜:阴离子树脂涂料〔刊,英〕/Nakayama,’介-suharu等// J.肠at.Technol一1997,69(870)一61一69 用能渗透涂膜的交联剂室温固化涂膜的方法如下:将带有湿涂膜(已成为热熔塑胶)的钢样板浸于交联剂的水溶液中,该交联剂渗人徐膜中,涂膜于该溶液中保持一般时间后便固化。该树脂为含二丙酮丙烯酞胺的阴离子共聚物;一种或多种丙烯酸、甲基丙烯酸硬脂酞酷、苯乙烯、丙烯酸丁醋、甲基丙烯酸丁醋和/或甲基丙烯酸甲酷和碳酞脱用作涂膜渗透性交联剂、酸促进剂和有机溶剂。用上述方法短时间浸渍便可制成固化…     

双主剂型丙烯酸酯胶粘剂的研制

以甲基丙烯酸甲酸为主单体，并加入丁腈橡胶弹性和其它助剂制备了双主剂新型的新型丙烯酸酯胶粘剂，测试了该胶粘剂的基本性能，讨论了影响该胶的贮存稳定性，固化速度和剪切强度的因素。     

含磷化合物的辐射固化粉末涂料组合物

含磷化合物的辐射固化粉末涂料组合物含烯不饱和树脂、含磷化合物，也可含烯属不饱和单体或齐聚物。该组合物具有良好的流动性、涂膜柔韧性和底材的附着力，经辐射固化，可用于制备涂料和清漆，特别用于金属表面涂料。例如，一种粉末涂料含有新戊二甲酸-甲基丙烯酸缩水甘油酯、甲基丙烯酸、2-羟乙     

丙烯酸酯类光敏树脂的制备及性能表征

用双酚A(BPA)、碳酸乙烯酯(EC)和甲基丙烯酸(MAA)通过两步法合成了二乙氧化双酚A双甲基丙烯酸酯(2EO-BPADMA)。并将2EO-BPADMA与甲基丙烯酸羟乙酯(HEMA)、甲基丙烯酸羟丙酯(HPMA)、引发剂1065和引发剂TPO混合,制备不同配比的丙烯酸酯类光敏树脂。利用光固化快速成型技术(SLA)对丙烯酸酯类光敏树脂固化成型,并进行性能测试,确定了最佳配比为2EO-BPADMA:HEMA:HPMA:TPO=80:10:10:5(质量比)。最佳配比的丙烯酸酯类光敏树脂与Foto Tec DLP.A型光敏树脂的力学性能和后固化性能非常接近。     

光纤涂料

D006282氨基甲酸醋甲基丙烯酸醋UV固化光纤涂料组合物:」F99一349651旧本专利公开11日本:NIPPon Kayaku Co.,Ltd.(Taniguehi,Nobuo等)一1999.12.21一7页一19981160一34(1998.6.9);护C C08F299106 该组合物含有(A)氨基甲酸醋甲基丙烯酸醋(由含氟的多元醇、甲基丙烯酸2一异氰酸根合乙基醋及某种有机多异氰酸醋反应制得)和(B)光引发剂。由该组合物形成的固化产品折光指数(200)《1.36,硬度、杨氏模量和断裂强度均高。例如,将由Fomblin Z--DOL 2000TX(含氟聚醚二醇)和甲基丙烯酸2一异氰酸根合乙基醋制得的氨基甲酸醋甲基丙烯酸醋60份,…     

双环戊二烯甲基丙烯酸酯的合成及其紫外光固化性能研究

以双环戊二烯与甲基丙烯酸为原料,在三氟化硼乙醚络合物催化剂的作用下,合成了双环戊二烯甲基丙烯酸酯（DCPMA）,并用~1HNMR、FT-IR对产品进行了表征分析。结果表明：当n（甲基丙烯酸）：n（双环戊二烯）=1.2：1、催化剂三氟化硼乙醚的加入量为0.6%、阻聚剂对苯二酚加入量为0.4%时,产品收率达52.5%。将DCPMA用于紫外光固化涂料中,与丙烯酸羟乙酯、甲基丙烯酸羟乙酯、2-苯氧基乙基丙烯酸酯、丙烯酸异冰片酯等4种单官能度的单体相比,涂料的固化收缩率低、固化膜的耐磨性好、附着力强、热稳定性高。     

改性邻苯二甲腈酚醛树脂胶黏剂的研究

采用4-硝基邻苯二甲腈和线型酚醛树脂反应,制备出邻苯二甲腈酚醛树脂。采用改性树脂和增韧剂对邻苯二甲腈酚醛树脂进行改性,制备出改性邻苯二甲腈酚醛树脂胶黏剂。并借助IR、DSC、TG对合成树脂及胶黏剂进行表征。该胶黏剂可在200℃温度下固化,固化产物具有较高的耐热性能和粘接性能。     

环氧端基酚酞聚芳醚腈改性环氧树脂胶粘剂性能的研究

通过差示扫描量热 (DSC)、热解重量分析 (TGA)和粘接强度的测定 ,对环氧端基酚酞聚芳醚腈改性的环氧树脂胶粘剂的性能进行了研究     

室温固化耐高低温环氧胶黏剂的研制

研制了一种室温固化耐高低温环氧胶黏剂。E-51与低黏度的711环氧树脂配合使用作为主体树脂,同时使用20%wt的自制增韧剂增韧,胶黏剂的综合性能较好,且具有良好的耐高低温性能。胶黏剂室温固化24h即能接近完全固化,耐介质和耐湿热老化性能优异。所制胶黏剂黏度低,可用于粘接和灌封。     

Effect of elastomer modification on the adhesive characteristics of maleimide‐functional phenolic resins

The effect of addition of elastomeric modifiers on the adhesive properties like lap shear strength and T‐peel strength of an addition curable, maleimide functional novolac phenolic resin (PMF), self‐cured and cocured with a novolac epoxy resin, was studied using aluminium adherends. The modifiers used were (1) two grades of carboxyl terminated butadiene acrylonitrile copolymer (CTBN) of different molecular weights, (2) a low molecular weight, epoxidized hydroxyl‐terminated polybutadiene, and (3) a high molecular weight acrylate terpolymer containing pendant epoxy functionality. The adhesive properties, when examined as a function of the varying concentrations of the additives, ranging from 10 to 30 parts per hundred parts (phr) of the resin, were found to depend on the nature of the matrix being modified as well as on the nature and concentration of the elastomer. The adhesive properties at ambient temperature of the self‐cured, highly brittle PMF resin were dramatically improved by the inclusion of all the elastomers, the increase being substantial in the case of high molecular weight CTBN. For the more rigid, less ductile, epoxy‐cured PMF system, the adhesive properties were marginally improved by the high molecular weight CTBN, whereas the other elastomers were practically ineffective. For both self‐cured and epoxy‐cured PMF systems, the inclusion of these elastomers generally decreased the high‐temperature adhesive properties, implying impairment of thermal characteristics, evidenced also from their dynamic mechanical spectra. The presence of phase‐separated elastomer particles in the modified systems has been evidenced from scanning electron micrographs. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 2321–2332, 1999     

胺化酰亚胺固化的环氧树脂体系的特性及其固化机理

能热分解成异氰酸酯和叔胺的胺化酰亚胺是很好的潜伏性环氧树脂固化剂和环氧-酸酐体系的固化促进剂,它固化的环氧树脂有许多优异的性能,特别是高的韧性和粘接强度。由胺化酰亚胺热分解速度控制的、高温下相对慢的、独待的固化机理是韧性的起因。     

Impacts of urea-formaldehyde resin residue on recycling and reconstitution of wood-based panels

Recycling and reuse of wood-based panels has been attracting great attention since it is an environmentally friendly means of managing wood waste. The recycled wood-based panels usually still contain adhesive residue. In the current research, the impact of urea-formaldehyde (UF) resin, one of the most widely used adhesives, on recycling and reconstitution of wood-based products has been evaluated by adding cured UF resin particles into a new adhesive system. The morphology, chemical structure, curing behavior, and bonding quality of an adhesive system containing 0–6% previously cured resin particles of varied sizes (< 600 μm) were investigated and compared to those properties of a regular adhesive without any impurity. Three-ply plywood glued with a UF adhesive containing 0–10 wt% previously cured resin of varied particle sizes (< 600 μm) were prepared and characterized. The results indicated that the resin residue could significantly affect the curing behavior and bonding quality of the new adhesive system. Higher content and greater size of the particles caused more severe deterioration in the bonding strength.     

有机蒙脱土改性环氧树脂结构胶粘剂的性能研究

利用经十八季铵盐改性有机蒙脱土与环氧树脂结构胶粘剂进行插层复合,在不同掺量、不同的固化条件下测试了插层法制备的有机蒙脱土-环氧树脂胶粘剂的钢-钢剪切强度、浇铸体压缩强度、流变性能及适用期。实验表明,中温固化是进行插层复合的关键条件,胶粘剂的性能有较大提高;当蒙脱土质量分数为10%时,其钢-钢剪切强度、浇铸体压缩强度分别提高65.3%和10%;随着蒙脱土含量的增加,胶粘剂的流变性能从牛顿液体向触变性流体转变。     

含二氮杂萘酮结构环氧树脂胶粘剂的研制

以双氰胺 (DCDA)为固化剂 ,以咪唑 (MZ)为固化促进剂 ,研制了一种含二氮杂萘酮结构的环氧树脂 (ER)胶粘剂 ,其成分为ER∶DCDA∶MZ∶SiO2 ∶Al=10 0∶7∶1∶3∶60 ,固化工艺为 12 0℃下固化 40min时 ,拉伸剪切强度为 17.8MPa ,有良好耐热性     

Effect of Xylene Formaldehyde Resins on Epoxy Resin Adhesive

The effect of some types of xylene formaldehyde on epoxy resin adhesive is studied. Xylene formaldehyde resin or modified xylene formaldehyde resins are mixed into liquid epoxy resin and curing properties of the blends, their adhesive properties and the dispersion state of xylene formaldehyde resin in cured adhesive film are examined. The results obtained are as follows.

1) Generally, by the addition of xylene formaldehyde resins, the degree of curing of blends are decreased, but pot life is prolonged, and tensile shear strength of steel bonds is increased.

2) It is observed that effects of the amount of xylene formaldehyde resins and curing condition on tensile shear strength vary with the kind of xylene formaldehyde resin, because of the difference in chemical structure of xylene formaldehyde resins and their reactivity to epoxy resin.

3) It is found that a limited region of compatibility, between 80 and 100 phr, exists for 100% xylene formaldehyde resin in epoxy resin. It is also found that joint strength is reduced with higher viscosity and molecular weight of 100% xylene formaldehyde resin in the case of 80 phr blends, and that these results have some relation to the dispersion state of xylene formaldehyde resin in epoxy resin, judging from the cured adhesive film observed under a phase contrast microscope.