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，制得聚氨酸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贮存稳定性。研究了某些因素对合成过程和固化性能的影响。     

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。     

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。     

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,…     

Structural methacrylate/epoxy based adhesives for aluminIum joints

The aim of this work was to investigate the influence of elastomer and monomer concentration on the properties of methacrylate/epoxy based adhesive formulations using a Plackett-Burman experimental design. The adhesive formulations were developed in order to bond non-treated aluminium panels. Their chemical structure was analysed by Fourier transformed infrared spectroscopy (FTIR) and the thermal behaviour by thermogravimetry (TGA) and differential scanning calorimetry (DSC) in comparison to a commercial adhesive. After room temperature mixing, time and temperature of the curing reaction were measured. Further, non-treated aluminium single-lap joints were adhesively bonded and their shear strengths were evaluated. The formulations showed chemical structure similar to a commercial adhesive but the thermal behaviour was quite distinct. The commercial adhesive cured slower than the developed adhesive formulations which can directly affect the bonding quality. However, some formulations showed higher shear strengths than the commercial one, but all with adhesive failure mode. The adhesive formulations with elastomers in methacrylate part showed the highest shear strengths.     

新型抗静电胶粘剂的研制

介绍了以醋酸乙烯和甲基丙烯酸甲酯在甲醇溶液中共聚所得树脂为粘料，与发黑共混制备抗静电粘合剂的方法，并对产品有关性能进行了测定。     

Strength, deformation and relaxation of joints bonded with modified cyanoacrylate adhesives

The introduction of high molecular weight poly(methyl methacrylate) or poly(butadiene-co-acrylonitrile) into ethyl 2-cyanoacrylate produced viscous adhesives with a homogeneous or heterogeneous structure after cure. Steel joints bonded with these adhesives are shown to have improved tensile shear strength, deformability and stress relaxation of bonds compared with pure cyanoacrylate adhesive. Poly(methyl methacrylate)-modified adhesive is recommended for static load-bearing joints while poly(butadiene-co-acrylonitrile)-modified adhesive is more suited to cyclic or vibrating loads.     

耐热结构厌氧胶的研制

用2，4-甲苯二异氰酸酯、一缩二乙二醇、甲基丙烯酸羟丙酯为主要原料合成含有苯环及N的甲基丙烯酸酯。以这种甲基丙烯酸酯为单体，并引入双马来酰亚胺作为改性剂制成耐热性好、粘接强度高的结构厌氧胶。     

The role of interfacial interactions and loss function of model adhesives on their adhesion to glass

The measurement of adhesion and the evaluation of influencing factors are of great scientific and technological importance. There are two distinct viewpoints on adhesion: (i) surface chemistry, and (ii) fracture mechanics. For elucidation of the relative importance of mechanical properties in the bonding of adhesives, the strength of adhesion between model adhesives and glass plates was measured by the wedge cleavage (WC) test method. Copolymers of methyl methacrylate (MMA) with n-butyl acrylate (nBA) and methyl methacrylate with styrene (S) were prepared as model adhesives. The results show that in MMA-nBA copolymers, by increasing the amount of nBA, both the loss function and the adhesion energy of the adhesives increase. However, by increasing the amount of nBA above a certain level, the adhesion strength begins to decrease. In this situation, the cohesive strength of the adhesive dominates the failure mechanism. On the other hand, a decrease in adhesion was expected upon increasing the amount of styrene in the poly(styrene-co-methyl methacrylate) adhesive, because methyl methacrylate, an interactive monomer with glass, is replaced by a non-interacting styrene monomer, while the loss function of the adhesive is almost constant. But our practical adhesion measurement technique was not sensitive enough to detect this adhesion loss.     

高性能丙烯酸酯结构胶的研制

研究了环己酯的用量对改性丙烯酸酯结构胶力学性能的影响,制备出了一种力学、耐热性能优异的丙烯酸酯结构胶:环己酯的最佳用量为15%,其常温剪切强度为19.23MPa,高温老化后剪切强度为33.9MPa,湿热老化后剪切强度为17.39MPa。     

溶剂型复膜胶的改性研究

通过甲基丙烯酸甲酯接枝改性,提高SBS复膜胶的耐候性、耐老化性和粘接强度。讨论了单体、引发剂用量及反血温度、时间等对复膜胶性能的影响。     

高韧性丙烯酸酯胶粘剂的研制

通过自由基聚合将甲基丙烯酸酯和氯丁橡胶进行接枝共聚，形成高韧性聚合物，加入补强填料，使丙烯酸酯胶粘剂达到高强度、高韧性，该胶粘剂综合性能优异，其拉伸强度为14HMPa,扯断伸长率为231％     

On The Strength of Adhesive Bonds Between Rigid, Non-Crystalline Polymers

The relatively high strengths exhibited by well-prepared, rigid adhesive bonds partly reflect the crack-growth inhibiting properties of the surrounding bulk. Dispersion forces alone are unable to inhibit crack growth significantly, as is indicated, for example, by the low strengths of low molecular weight glassy polymers. The source of crack-growth inhibition of adhesive bonds was revealed by examining crack fronts with a microscope. Examined were crack fronts along the self-bond between pieces of poly(methyl methacrylate) and along the adhesive bond between pieces of poly(methyl methacrylate) and polystyrene. Associated with each crack front were two sets of interference fringes, indicating the presence of a craze preceding the crack. Crazes form in high molecular weight brittle polymers, and their presence along the adhesive bond ahead of the crack indicates the involvement of the high molecular weight bulk polymer adjacent to the bonding plane. Crazes ahead of cracks are known to inhibit fracture by distributing the load surrounding the cracks and causing any growth to consume large amounts of energy.