水性丙烯酸树脂的改性及应用

综述了近年来利用有机氟、有机硅、环氧树脂和聚氨酯等改性水性丙烯酸树脂的研究状况和技术进展,并对水性丙烯酸树脂的应用和未来的发展趋势进行了阐述与展望。研制功能化、多元化和环保化的新型水性丙烯酸树脂将是新一代水性涂料的追求目标。     

水性丙烯酸树脂的改性研究进展

从水性丙烯酸树脂改性所用功能性单体(或树脂)和聚合工艺2个方面对水性丙烯酸树脂改性的研究现状进行了综述,并对研究中存在的问题提出了看法和建议.     

水性有机硅改性环氧丙烯酸树脂的制备及性能研究

针对涂料漆膜吸水率偏高的问题,采用种子乳液、单体滴加的方法进行聚合,研究了丙烯酸用量、E-44用量、A151与D4的配比、乳化剂总量、引发剂用量、电解质种类对乳液以及漆膜性能的影响。结果表明:采用正交优化方法,可以改性涂料漆膜的吸水率,制得的乳液稳定性高。其最优配方为:AA含量为2%,E-44含量为5%,有硅单体为6.04g且A₁₅₁:D₄为1∶2,复合乳化剂为2.5%且OP-10:SLS为2∶1,电解质稳定剂NaHCO₃为0.45%,引发剂APS为0.8%,其各项性能均满足GB/T20623-2006《建筑涂料用乳液》标准的要求。     

丙烯酸树脂及其涂料

0404001耐候且贮存稳定的非水性树脂分散体组合物,其无光涂料和用其涂覆的构件:JP2003一335947[日本专利公开]/日本:Dainippon Ink andChe而eals,Inc.(儿shiue,Akira等)一2003.11.28一10页一2002/142 884(2002.5.27);IPC C08L101/00 题述组合物含有(A)醇酸树脂改性乙烯基聚合物分散剂,其由乙烯基单体和(半)干性油和/或(半)干性脂肪酸溶于有机溶剂中制得、(B)乙烯基聚合物的分散粒子,其含有不溶于有机溶剂的溶解度参数)9.0的)60%乙烯基单体单元和(C)有机溶剂。例如,在芳烃溶剂(S olvesso 100)中聚合豆油型醇酸树脂(Beckosol p 470一70…     

丙烯酸树脂改性的水性聚氨酯耐水性研究

本文研究了用丙烯酸树脂改性的水性聚氨酯耐水性特征。研究结果表明：通过聚氨酯与丙烯酸树脂机械共混能一定程度提高其耐水性;而实施化学共混即核－壳型聚合过程,形成的核－壳型聚合物具有二者树脂分子链相互贯穿与缠结的互穿网络结构,可以实现二者树脂的性能优势互补和耐水性能显著提高。     

水性丙烯酸树脂的合成研究

以甲基丙烯酸甲酯、丙烯酸丁酯为主要单体,以过氧化苯甲酰为引发剂,通过引入亲水性基团羧基和羟基,制备了水性丙烯酸树脂。确定了最佳反应条件,讨论了水性基团的用量对树脂性能的影响,并用红外光谱(FT-IR)和差示扫描量热分析(DSC)对所合成树脂的结构进行了分析和表征。     

丙烯酸树脂改性的水性聚氨酯耐化学性研究

研究了以不同方式改性的水性聚氨酯的耐化学性。试验结果表明,物理和化学改性均可提高水性聚氨酯的耐水性、耐甲基性及耐下酮性;仅以聚氨酯、丙烯酸树脂之间形成化学键的常规化学改性无助于改善聚氨酯的耐碱性;而以核－壳共聚的化学改性则可提高聚氨酯的碱性。     

丙烯酸树脂改性的水性聚氨酯性能与结构

采用丙烯酸树脂（ＰＡ或ＰＡ’）对水性聚氨酯（ＰＵ）改性,研究了丙烯酸树脂改性的水性聚氨酯的性能与结构。结果表明：设计ＰＵ分子链硬段与ＰＡ分子链形成化学键,材料中ＰＵＡ及ＰＵ／ＰＡ中ＰＵ分子链硬段与ＰＡ分子链具有较高的相容性和共混程度;机械共混物ＰＵ／ＰＡ中ＰＵ分子链、ＰＡ分子链之间的共混主要集中于ＰＵ乳胶粒、ＰＡ乳胶粒表层;ＰＵＡ及ＰＵＡ’材料ＰＵ分子链与ＰＡ分子链之间处于一同相分离状态。ＰＵＡ’     

丙烯酸酯系水性上光油的研制

介绍了一种丙烯酸酯共聚乳液的研制过程 ,应用于纸张的印刷上光工艺 ,具有光泽度佳 ,耐磨、耐水等特点     

水性羟基丙烯酸树脂的制备与研究

以甲基丙烯酸甲酯(MMA)、苯乙烯(St)和丙烯酸丁酯(BA)等为主要单体,引入丙烯酸(AA)、丙烯酸羟基乙酯(HEA)与甲基丙烯酸异冰片酯(IBOMA)等作为功能单体,通过半连续溶液聚合工艺,最后加水分散制得水性羟基丙烯酸树脂。利用FT-IR、透光度、粘度分析研究了单体配比、引发剂(BPO)用量、温度、链转移剂(DDM)用量、功能单体用量等因素对树脂性能的影响。结果表明,当AA、HEA、IBOMA、BPO和DDM的质量分数分别为3%、12%、10%、3%和2%,聚合反应温度100℃时可获得粘度为5 Pa.s,固含量约45%的水性羟基丙烯酸树脂。     

The photooxidation and stabilisation of water-borne acrylic emulsions

The influence of light exposure on the photooxidative stability of aqueous acrylic based latices is examined by Fourier transform-infrared spectroscopy (FT-IR) and hydroperoxide analysis. These are based on emulsion polymerised formulations of methyl methacrylate and butyl acrylate. Here acrylic latices based on different formulations are chosen as homo-polymers and copolymers. The nature of impurities and oxidation products generated during their manufacture are characterised and inter-related to their influence on subsequent photooxidative degradation. This involves the use of reflectance FT-IR spectroscopy to show functional group changes together with colorimetric UV analysis to determine photochemical generation of hydroperoxides. The early chemical changes and their subsequent influence on the physical and chemical properties of the latices during the later stages of photooxidation are found to exhibit a close inter-relationship. In terms of stabilisation co-reactive hindered piperidine stabilisers are found to be effective and nono-extractable. However, the incorporation of simple terminal dialkyl acrylamide/methacrylamide groups are equally as effective.     

新一代水性醇酸树酯

醇酸树脂的水性化具有十分重要的意义，本文简介了水，比醇酸树脂涂料的发展历史、制备、特点、功能以及施工方法。     

Synthesis of silicone–acrylic resins and their applications to superweatherable coatings

Silicone–acrylic resins were synthesized to prepare superweatherable paints for building materials. The raw materials used were n‐butyl acrylate, methyl methacrylate, and n‐butyl methacrylate as acrylic monomers and 3‐methacryloxypropyltrimethoxysilane (MPTS) as a silicone monomer reactive with the acrylic monomers. Acrylic copolymers were synthesized such that their glass‐transition temperatures were adjusted to 30°C and their MPTS contents were varied to 10, 20, and 30 wt %. As the content of silicone and MPTS increased, average molecular weight and viscosity increased, and thermal stability at high temperatures improved. When we tested the properties of coatings by blending the synthesized silicone–acrylic resins with a white pigment, adhesion was superior with various substrates, and their properties were suitable on the whole. Weatherability was tested by an outdoor exposure test with a weather‐ometer and an accelerated weathering tester, and their results showed that silicone–acrylic resin composed of 30 wt % MPTS was a superweatherable coating. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 1614–1623, 2001     

Application of silica-based pigments in water-borne acrylic paints and in solvent-borne acrylic paints

The amorphic silica, Syloid 244 was modified using N-2-(aminoethyl)-3-aminopropyltrimethoxysilane. Pigments based on the silica carrier were obtained by coupling the organic dye, C.I. Reactive Blue 19 to the modified surface of the silica. The adsorption process was conducted in an aqueous suspension of the silica, supplemented with the dye. An extent of modification was evaluated using infrared spectroscopy and nuclear magnetic resonance spectroscopy. Structural and microscopic properties of the product were examined as were the zeta potential and the particle size distribution. The specific surface area was estimated using a BET approach. The efficiency of the adsorption process and the effects of the amount of dye and type of dye, on the final product, were determined. Moreover, the stability of the chemical bonds that were formed between the dye and the carrier was examined in elution tests. The pigments obtained were tested in water soluble binders and in organic solvent-solubilised acrylic paints.     

水性丙烯酸氨基烤漆的制备及性能研究

通过试验得出,当水溶性丙烯酸树脂与CYMEL303氨基树脂比例为(5～6):1,选丁基卡必醇和异丙醇为助溶剂,NACUREX49-110为催干剂时,水性丙烯酸氨基烤漆的性能最佳。本文重点讨论了丙烯酸树脂、氨基树脂、催干剂等因素对水性丙烯酸氨基烤漆性能的影响。