羟基丙烯酸树脂改性水溶性醇酸树脂研究

将豆油和三羟甲基丙烷醇解得到甘油酸酯,再加入高固含量羟基丙烯酸树脂,与苯酐、偏苯三酸酐酯化反应制备得到改性水溶性醇酸树脂。采用红外光谱和凝胶色谱对产物结构进行了表征,通过涂料的干燥时间、硬度、耐水性及耐老化性等测试研究了羟基丙烯酸树脂的用量对涂料性能的影响。结果表明:羟基丙烯酸树脂的用量为醇酸树脂质量的50%～60%时涂层性能最佳。与未改性的醇酸涂料相比,改性后的醇酸树脂涂料20 min即可实现表干,涂料的耐水性和耐盐水老化性均得到明显改善。     

水性丙烯酸改性醇酸树脂涂料的合成和性能研究

本文主要研究了以植物油为原料的醇酸树脂的合成工艺,采用马来酸醉(MA)与丙烯酸改性单体的共聚物对树脂进行了改性,合成了水性丙烯酸改性醇酸树脂涂料,提高了涂料的综合性能。     

紫外光固化丙烯酸改性醇酸树脂的合成研究

以羟基醇酸树脂、甲苯二异氰酸酯(TDl)、丙烯酸羟乙酯(HEA)等为原料合成了紫外光固化丙烯酸改性醇酸树脂。研究了HEA相对于异氰酸酯低聚物的用量、反应温度、反应时间、催化剂用量等对产物性能的影响。结果表明,适宜的反应条件:异氰酸酯低聚物合成温度为40~45℃;丙烯酸改性树脂合成中,HEA用量占异氰酸酯低聚物用量的3.5%,反应温度50~55℃,反应时间4 h,催化剂用量1.2%。配制成清漆,表明漆膜具有韧性好、附着力优,耐候性佳、耐磨等优点。     

环氧树脂/丙烯酸改性水性醇酸树脂的制备及性能

以环氧树脂E-44与亚麻酸反应生成环氧酯,将其与亚麻酸、邻苯二甲酸酐、苯甲酸、三羟甲基丙烷、顺丁烯二酸酐等进行酯化反应合成基础醇酸树脂,再用丙烯酸、甲基丙烯酸甲酯、丙烯酸丁酯、苯乙烯对其进行改性,得到一种水性醇酸树脂。采用红外光谱、粒径分析、透射电镜和热重分析研究了产物的结构、粒径和热稳定性以及环氧树脂和丙烯酸用量、终点酸值、中和度对树脂性能的影响。结果表明,改性水性醇酸树脂的最佳合成条件如下:环氧树脂E-44添加质量分数为9%~14%,丙烯酸质量分数7%,终点酸值(KOH)40~50 mg/g,中和度为80%。在该条件下制备出的水性醇酸树脂粒径分布均匀,具有良好的硬度、附着力、水溶性和耐水性。     

水溶性苯乙烯改性醇酸树脂的合成工艺研究

采用脂肪酸法合成基础醇酸树脂,然后用苯乙烯和丙烯酸接枝共聚,制得了水溶性苯乙烯改性醇酸树脂.通过探讨油度、K值、苯乙烯、丙烯酸用量等因素对改性后树脂成膜性能的影响,确定了水溶性苯乙烯改性醇酸树脂的最佳工艺和配方;同时比较了水溶性常规未改性醇酸清漆、溶剂型苯乙烯改性醇酸清漆与水溶性苯乙烯改性醇酸清漆的性能优劣.结果表明:水溶性苯乙烯改性醇酸树脂较未改性醇酸树脂干性、硬度有了较大提高,与溶剂型苯乙烯改性醇酸树脂相当;当选取油度60％、K值1.05、苯乙烯质量分数35％、丙烯酸质量分数6.5％时,水溶性苯乙烯改性醇酸树脂白干表干达到0.5 h,实干20 h,硬度HB,水溶性优异,漆膜耐水、耐碱性获得很大提高,同时兼具了性能要求和环保要求.     

双固化低VOC高固体分丙烯酸改性醇酸树脂的制备

讨论了脂肪酸、一元酸、醇酸树脂油度、催化剂、兑稀溶剂的选择及羟基丙烯酸树脂用量、羟基值、平均相对分子质量对改性树脂性能的影响。结果表明:选用豆油酸、苯甲酸、油度为62%的醇酸树脂、用量为0.1%的钛酸丁酯和混合兑稀溶剂,羟基丙烯酸树脂的用量为14%、羟基值为80~100 mg KOH/g、平均相对分子质量为4 000~5 500时,能得到各项性能良好的羟基丙烯酸改性醇酸树脂。     

聚氨酯亮光清漆中羟基树脂的选择

采用羟基树脂、混合溶剂、助剂为A组分,含-NCO混合溶液为B组分制备双组分聚氨酯（PU）亮光清漆,通过羟基丙烯酸树脂、合成脂肪酸树脂、植物油改性醇酸树脂等一些常规羟基树脂的筛选搭配,制备性能较佳的PU亮光清漆,满足消费者需求.     

丙烯酸改性醇酸树脂涂料的研究进展

综述了丙烯酸改性醇酸树脂的合成,性能及应用,讨论了该类树脂的优缺点,预测了丙烯酸系性醇酸树脂涂料的发展趋势。     

快干型水性醇酸树脂的制备及其应用北大核心CSCD

为解决水性钢结构醇酸涂料干燥速度慢和涂层初期耐水性差的问题,以不饱和脂肪酸、多元醇、多元酸及酸酐合成了醇酸树脂,并采用苯乙烯、丙烯酸类单体对其改性,制备了水性苯丙改性醇酸树脂。利用FT-IR对其结构进行了表征,通过凝胶渗透色谱、粒径、接触角、初期耐水性等测试研究了原料及其用量及对树脂和清漆性能的影响。结果表明:苯丙树脂玻璃化温度设计为70℃时,随其用量增加,改性树脂涂层表干速度加快。随着苯丙树脂玻璃化温度提高,涂层表干速度加快。丙烯酸单体质量分数为3%时,改性树脂水分散体的粒径为84.82 nm,涂层干燥2 h后接触角为99.5°,初期耐水性可达96 h,实干耐水性168 h,可广泛应用于钢结构防腐领域。     

丙烯酸改性醇酸树脂的研制

本文采用基团转移共聚法 ,合成低分子量、窄分布的活性丙烯酸预聚物 ,再与醇酸树脂接枝酯化 ,制得丙烯酸改性醇酸树脂。树脂涂膜在干性、耐腐蚀等性能方面明显优于传统醇酸树脂。讨论了各主要因素对合成预聚物、树脂及涂膜性能的影响     

Synthesis of four-component acrylic-modified water-reducible alkyd resin: investigation of dilution ratio effect on film properties and thermal behaviors

This study investigated the effect of the dilution ratio on film properties of acrylic-modified water-reducible alkyd resins. First, new four-component acrylic-modified alkyd resins based on 1,3-propanediol containing 40% of the equivalent amount of acrylic copolymer to alkyd resin were synthesized using the fatty acid method. The synthesized acrylic-modified alkyd resin was then dissolved in isopropyl alcohol (IPA) at various ratios and further diluted using distilled water at various ratios to obtain by-weight percentages of 70/50, 70/60, and 80/60 of solid content to IPA and water, respectively. Films of the modified alkyd resins were prepared, and cured at 150°C for 1 h, then their physical and chemical surface coating properties and thermal behaviors were investigated. The best results were obtained for the by-weight percentages of 80/60.     

丙烯酸改性醇酸树脂的合成、应用及发展趋势

利用新疆本地丰富的葵花油和石化资源,通过单甘油酯法研制出一种干燥迅速,保光保色和耐候性好且成本适中的丙烯酸改性醇酸树脂。并对丙烯酸改性醇酸树脂的应用领域及发展趋势进行了阐述。     

改性水性醇酸树脂的合成及底漆的制备

本文研究了改性松香类水性醇酸树脂的合成及其底漆的配制．讨论了反应时间、反应温度对产物性能的影响，所得产物具有良好的耐热性．用改性松香类水性醇酸树脂制备的底漆具有较好的性能。     

自干型改性水溶性醇酸树脂的研制

用妥尔油酸、间苯二甲酸、顺丁烯二酸酐、三羟甲基丙烷等原材料制得水性醇酸树脂,将苯乙烯、丙烯酸(酯)单体与醇酸树脂通过接枝共聚制得改性醇酸树脂,改性后的醇酸树脂具有较好的干性、硬度和耐水性。     

水性苯丙共聚物改性醇酸树脂的制备及性能

以油酸、季戊四醇、邻苯二甲酸酐、苯甲酸为原料,采用丙二醇甲醚醋酸酯（PMA）为溶剂合成了基体醇酸树脂;用过氧化苯甲酰、过氧化苯甲酸叔丁酯双引发剂、分步引发烯类单体共聚,制备了一种苯丙烯树脂,并对醇酸树脂改性制得了水性醇酸树脂。考察了不同油度对水性醇酸树脂结构与性能的影响。通过FTIR、TGA、DLS分别对树脂的结构、稳定性和乳液性能进行了表征。测定了树脂的漆膜性能,包括耐水性、表干时间、硬度、电化学性能。结果表明,n（油酸）∶n（季戊四醇）∶n(邻苯二甲酸酐)∶n（苯甲酸）=1∶1∶1∶0.3,油度为47%时,聚合物乳液粒径为74.4 nm,PDI为0.262,胶膜的吸水率为14.5%,接触角为70.87?,有较好的耐水性。改性醇酸树脂的表干时间缩短为0.5 h,实干时间缩短为24 h,硬度达HB。     

丙烯酸预聚物的参数对改性醇酸树脂的影响

用丙烯酸预聚物改性得到的醇酸树脂具有干燥快,耐候性好等特点。建立了醇酸树脂配方设计的通用程序,该程序可用于丙烯酸预聚物改性醇酸树脂的设计。讨论了丙烯酸预聚物的分子量、官能度以及在配方中的双例等对树脂性能参数的影响;明确了丙烯酸预聚物的参数等对改性醇酸树脂的作用。     

Preparation and properties of urethane alkyd based on a castor oil/jatropha oil mixture

Castor oil is the only major natural vegetable oil that contains a hydroxyl group and so it is widely used in many chemical industries, especially in the production of polyurethanes. In this work, castor oil was interesterified with jatropha oil and the product was subsequently reacted with toluene diisocyanate to obtain urethane alkyd. The prepared urethane alkyd was characterized and its properties were determined and compared with those of the conventional (glycerol/jatropha oil) and commercial urethane alkyds. The castor oil/jatropha oil-based urethane alkyd had a lower molecular weight and viscosity, a slightly lower hardness and greatly longer drying time than the conventional and commercial urethane alkyds, but otherwise the film properties were broadly similar, including being very flexible, with an excellent adhesion and high impact resistance. In addition, they also exhibited excellent resistance to water and acid.     

Effects of oil type on the properties of short oil alkyd coating materials

Short-oil alkyd resins were prepared by using five different oil types: corn oil, rice bran oil, sunflower oil, soya bean oil and dehydrated castor oil (DCO). Among these, soya bean oil gave alkyd resin with the darkest color because oxidation occurred. Auto air-dried coating films were developed and it was shown that film prepared from rice bran oil-based alkyd exhibited the longest drying time due to the low number of double bonds compared to other and the extra natural antioxidant in rice bran oil. DCO alkyd-based film revealed the shortest drying time, the greatest hardness but the poorest alkali and sea-water resistance. This is caused by the differences in the type of fatty acid and double bonds, the high amount of double bonds being in DCO. In addition, an increase in the reaction temperature only had an influence on darkening the alkyd color and decreasing the drying time of coating films. In terms of technical properties and cost competitiveness, soya bean oil-based film is the best. Coating films derived from all oil-based alkyds, except DCO, look promising for use in surfboard manufacturing.     

溶脂性医用不干胶的研制

用反应物总质量70%的不干性蓖麻油代替干性油,在210℃先与甘油进行醇解反应,然后将反应物在同温度下与邻苯二甲酸酐进行酯化反应,合成了醇酸树脂类溶脂性医用不干胶。此类不干胶的不干性大于50d,迁移性小于2 5%,耐水性大于10min,180°剥离强度大于10N/25mm。比现在使用的丙烯酸酯及橡胶类医用不干胶对脂性药物具有更好的相溶性,有更强的粘接强度及耐水性,可多次反复使用,对皮肤无刺激作用。