水基改性环氧树脂涂料的合成研究

研究了以环氧树脂Ｅ－４４为主要原料，对水基改性环氧树脂涂料－环氧磷酸酯－丙烯酸接枝共聚物的合成反应，探讨了丙烯酸及其酯，苯乙烯和引发剂的用量，接枝反应温度，接枝反应时间等因素对该接枝共聚物水分散稳定性的影响，确定了较佳的工艺条件。     

环氧磷酸酯－丙烯酸接枝共聚反应的研究

环氧磷酸酯－丙烯酸接枝共聚反应是制备水性环氧树脂的一种重要途径。本文研究了环氧树脂磷酸酯化的条件，讨论了反应温度、溶剂、引发剂等因素对环氧磷酸酯－丙烯酸接枝反应的影响。也测定了环氧磷酸酯和环氧丙烯酸接枝共聚物的凝胶渗透色谱和红外光谱。     

环氧磷酸酯—丙烯酸接枝共聚反应的研究

环氧磷酸酯－丙烯酸接枝共聚反应是制备水性环氧树脂的一种重要途径。本文研究了环氧树脂磷酸酯化的条件，讨论了反应温度、溶剂、引发剂等因素对环氧磷酸酯－丙烯酸接枝反应的影响。也测定了环氧磷酸酯和环氧丙烯酸接枝共聚物的凝胶汉透色谱和红外光谱。     

丙烯酸环氧自交联阴极电泳涂料的研制

研究了以环氧树脂为母体，与丙烯酸单体接枝共聚物组成的自交联阴极电泳涂料的配方和合成工艺条件，讨论了环氧树脂的分子量、丙烯酸单体配比、接枝共聚反应温度与时间和有机胺对漆膜性能的影响。     

环氧接枝改性水性丙烯酸树脂的合成研究

通过丙烯酸酯类单体与环氧树脂接枝共聚反应,对水性丙烯酸树脂进行改性。研究了环氧树脂种类、用量、加料方式、反应温度及中和度等因素对其性能的影响。研究结果表明,当环氧树脂E-44在反应前期加入,用量为6%~9%(占总单体质量分数),反应温度为110℃,中和度为110%时,改性树脂具有较好的成膜性能和优异的物理机械性能。红外光谱分析证实接枝产物的存在;用扫描电镜观察了接枝共聚物的水分散体的粒子形态及大小。     

环氧-丙烯酸阴极电泳涂料的实验研究(Ⅰ)--合成工艺和配方

本文详细地研究了环氧树脂为母体,丙烯酸类单体接枝共聚物组成的自交联阴极电泳涂料的配方和民工艺条件,确定了环氧树脂的环氧值,丙烯酸单体配比、接枝共聚反应温度与时间及有机胺等因素,同时探讨了它们对树脂及漆膜性能的影响     

丙烯酸/环氧树脂共聚可制优异水性涂料

摘自：www．china—coating．net 丙烯酸／环氧树脂接枝共聚物可以制备优异的水性涂料。接枝共聚就是通过丙烯酸类单体与环氧树脂接枝共聚反应,在环氧树脂中引入强亲水性基团-COOH,使树脂水性化。郑州大学工学院化工学院最近研究了新的丙烯酸／环氧树脂共聚接枝方法,     

环氧酯—丙烯酸接枝共聚物水性化的研究

将丙烯酸单体与环氧磷酸酯接技共聚，引入强亲水性基团－ＣＯＯＨ使枝脂水性化。讨论了制备环氧磷酸酯时磷酸量、丙烯酸量、环氧树脂分子量及其他反应条件，如引发剂等对环氧酯－丙烯酸接枝共聚物水分稳定性的影响。测定了接枝共聚物的异常粘度－浓度曲线。     

环氧酯－丙烯酸接枝共聚物水性化的研究

将丙烯酸单体与环氧磷酸酯接技共聚，引入强亲水性基团－ＣＯＯＨ使树脂水性化。讨论了制备环氧磷酸酯时磷酸量、丙烯酸量、环氧树脂分子量及其他反应条件，如引发剂等对环氧酯一丙烯酸接枝共聚物水分散稳定性的影响。测定了接枝共聚物的异常粘度一浓度曲线。     

室温固化型水性环氧防腐涂料的研制

以BPO为引发剂,用α-甲基丙烯酸与E-44型环氧树脂接枝共聚反应合成了环氧-丙烯酸多元接枝共聚物,并用有机酸中和剂调节pH为7～8,制得水性环氧-丙烯酸乳液,进一步制得水性环氧涂料。涂膜固化中用新型低分子水性聚酰胺固化剂加适量促进剂使固化反应在室温下进行。通过测定该涂料的各项性能,结果表明,该涂料附着力、耐冲击性、耐腐蚀性等各项性能良好且施工简单又环保,适用于不能加热的金属底材的防护。     

Zum einfluß hochdispersen polyvinylchlorids auf die polymerisation aminhaltiger monomerer der acrylreihe

The radical polymerization of amine-containing acrylic monomers is accelerated in presence of PVC as filler. To clarify this effect the influence of PVC concentration on the polymerization kinetics of acrylic monomers with or without amino-groups has been estimated. The immobilization of monomers on the filler has been investigated by viscosimetric and swelling measurements. The results confirm the conception of a specific chemical interaction between PVC and amine-containing monomers.     

苯丙超微胶乳的合成及性能研究

以苯乙烯、丙烯酸丁酯为单体,丙烯酸及甲基丙烯酸羟乙酯为功能单体,采用“单体两段滴加法 氨碱微化”制备苯丙超微胶乳,通过正交实验考察了单体用量、预加单体量、乳化剂用量及单体滴加速度等对乳胶透光率的影响,初步研究了乳化剂用量及功能性单体丙烯酸／甲基丙烯酸羟乙酯的配比对乳胶透光率及乳胶膜性能的影响。     

Effect of location of polymerizable double bond on the polymerization of micelle-forming monomers

Summary The polymerizability of micelle-forming quaternary ammonium monomers, which were derived from a methacrylic ester and styrene, carrying a polymerizable double bond close to the head group (Type H) or at the alkyl chain end (Type T) including a new monomer, 5-(p-vinylphenyl)pentyltrimethylammonium bromide, has been investigated above their critical micelle concentrations in water. The results are explained on the basis of the structure of the obtained polymers as well as the micelle structure of the monomers in water. The Type H monomers were able to thermally polymerize, while the Type T monomers could not.     

Vinyl monomers bearing chromophore moieties and their polymers. VII. Synthesis,photochemical, and initiation behavior of acrylic monomers bearing phenothiazine oxide moieties and their polymers

Four acrylic monomers bearing phenothiazine oxide moieties, that is, N-acryloyl-phenothiazine-5-oxide (APTO), N-acryloyl-2-chlorophenothiazine-5-oxide (ACPTO), N-acryloyl-phenothiazine-5,5-dioxide (APTDO), and N-acryloyl-2-chlorophenothiazine-5,5-dioxide (ACPTDO) were synthesized by oxidation of corresponding N-acryloyl-phenothiazine (APT) and N-acryloyl-2-chlorophenothiazine (ACPT) using sodium perborate as an oxidant. These monomers could easily be polymerized by initiation of AIBN. The emission fluorescence spectra of the monomers and their polymers were recorded, and the results indicated that these 4 new monomers possess a fluorescence structural self-quenching effect (SSQE), as we have reported previously. Moreover, with the change of the electronic structure of sulfur atom in the phenothiazine chromophore, that is, from sulfide to sulfoxide and sulfone groups, the tendency of SSQE of these monomers is in the order of APT > APTO > APTDO. This would be ascribed mainly to the decrease of electron-donating abilities of monomers in a sequence of sulfide, sulfoxide, and sulfone groups; that is, at the sulfur atom of these monomers, APT has 2 lone-pair electrons, APTO has 1 lone-pair electrons, and APTDO completely loses its lone-pair electrons. Based on the exciplex formation, the monomers APTO, APTDO, ACPO, and ACPTDO could act as sensitizers for the photopolymerization of acrylonitrile (AN). The combination of APTO or ACPTO with organic peroxides such as BPO could also initiate the polymerization of vinyl monomers, such as AN, by redox nature. © 1998 John Wiley & Sons, Inc. J. Appl. Polym. Sci. 70: 1191–1199, 1998     

单体和预聚物对UV光油固化膜层柔韧性的影响

通过一系列实验研究,探讨了单体、预聚物以及相互比例对UV光油固化膜层柔韧性的影响。结果表明:使用双官能团单体制备的UV光油固化膜层的柔韧性最好;单体分子量越大,制备的UV光油固化膜层的柔韧性越好。预聚物对固化膜层的柔韧性影响更大,在实验使用的五种预聚物中,使用2491制备的UV光油固化膜层柔韧性最好。单体和预聚物的不同配比对柔韧性亦有明显的影响,单体和预聚物要有合适的配比才能使制备的UV光油固化膜层的柔韧性最佳。     

Crosslinking of unsaturated polyester resins by combinations of vinyl esters and methacrylates

The replacement of styrene by other crosslinking monomers in unsaturated polyester resins has been investigated because of the possible toxicity of this monomer and the strong smoke evolution of burning polyester materials. A theoretical study has been carried out to provide criteria for the applicability of classes of monomers in polyester curing. From this study it appeared that vinyl esters, vinyl ethers, N-vinyl lactams, and styrenes are suitable, whereas acrylic and methacrylic esters and allylic or olefinic compounds are not. Combinations of vinyl esters and (meth)acrylic esters of polyols should generate IPN-like structures. Polyesters cured by this combination of monomers gave materials with increased stiffness and strength relative to those obtained with the separate monomers and on the same level as styrene-cured polyesters.     

Surface photografting of hydrophilic vinyl monomers onto diethyldithiocarbamated polydimethylsiloxane

Photografting of vinyl monomers has been studied to make hydrophilic polydimethylsiloxane (PDMS) surfaces. A chlorine-containing polydimethylsiloxane (C-PDMS) prepared by polymerization of chloromethylheptamethylcyclotetrasiloxane was photocured on a glass plate. The crosslinked C-PDMA was subjected to a reaction with sodium diethyldithiocarbamate. The diethyldithiocarbamated PDMS was then photoirradiated in the presence of hydrophilic vinyl monomers such as 2-hydroxyethylmethacrylate and acrylamide to afford surface-grafted PDMS. Several vinyl monomers were found to graft onto the PDMS surface, as revealed by their attenuated total reflectance infrared and ESCA spectra. Hydrophilicity of the grafted PDMS surfaces was confirmed by the decrease in their water contact angle.     

香豆素酮类化合物的瞬态研究——Ⅱ.不同单体和胺类化合物对香豆素酮三重态的猝灭

本工作采用激光闪光光解方法对香豆素酮类化合物的光还原及其三重态的猝灭问题进行了研究。当以胺类化合物为猝灭剂时,可以清楚地观察到半片呐醇自由基的生成,并得到了它的瞬态吸收光谱。以几种烯类单体去猝灭香豆素酮的三重态,所得的猝灭速度常数表明:单体的猝灭能力不能和胺类的猝灭能力相竞争,因此,可以预期这类化合物可以引发聚合某些不能为二苯酮引发体系所聚合的单体。     

高羟基含氟丙烯酸乳液的合成及性能研究

以丙烯酸酯类单体作为原料,以过硫酸钾为引发剂,采用预乳化半连续乳液聚合方式合成了高羟基丙烯酸乳液,并在后期补加氧化还原体系引发剂,提高了单体的转化速率。系统地研究了乳化剂用量、羟基单体、氟单体、硅单体含量等因素对涂膜性能的影响。最后,将制备的丙烯酸羟基组分同水性固化剂配制成双组分水性丙烯酸聚氨酯清漆,并分析清漆的性能。     

聚丙烯酸酯压敏胶的研制及在反光膜中的应用

以丙烯酸异辛酯(EHA)和丙烯酸丁酯(BA)为软单体,甲基丙烯酸甲酯(MMA)为硬单体,丙烯酸(AA)和丙烯酸羟丙酯(HPA)为交联单体,过氧化苯甲酰(BPO)为引发剂,乙酸乙酯为溶剂,采用溶液聚合法制备了一种溶剂型聚丙烯酸酯压敏胶。考查了各单体用量对压敏胶综合性能的影响。结果表明,当软单体质量分数为85%、MMA质量分数为5%、AA质量分数为6%和HPA质量分数为4%时,PSA综合性能优异,可满足反光膜的使用要求。