有机硅/有机磷共聚改性丙烯酸酯乳胶膜阻燃性能的研究
The Study on the Flame Retardant Properties of Silicone/Organophosphorus Copolymer Modified Acrylate Latex Films
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- Keywords: Polyacrylate emulsions; 2-hydroxyethyl methacrylate phosphate; Flame retardance聚丙烯酸酯乳液; 2-羟乙基甲基丙烯酸磷酸酯; 阻燃改性
- Abstract: Polyacrylate emulsions are widely utilized due to their excellent adhesive properties, environmental friendliness, and film-forming capabilities. However, the application of polyacrylate films is somewhat limited by their inherent drawbacks, such as thermal adhesion, cold brittleness, and flammability. Consequently, there is a need for their modification. In this thesis, a modified acrylate emulsion was prepared using 2-hydroxyethyl methacrylate phosphate (PM-2), vinyltriethoxysilane (TEOS), and 2-acrylamido-2- methylpropanesulfonic acid (AMPS) as functional monomers through the seed emulsion polymerization method. The experimental results demonstrated that when BA + MMA constituted 30% of the composition, and the emulsifier, initiator, PM-2, TEOS, and AMPS accounted for 6%, 1.2%, 2%, 4%, and 3% of the monomer quantity, respectively, the modified emulsion exhibited good stability. The tensile strength of the modified polyacrylate film increased from 3.21 MPa before modification to 7.12 MPa after modification, and the flame retardant performance reached the highest level of 94V-0. It is evident that modification can significantly enhance the mechanical strength and flame retardant properties of polyacrylate films. This research provides a reference for further study and application of polyacrylate emulsion.聚丙烯酸酯乳液因具有优良的粘结力、环保性以及成膜性，而被广泛应用。但是，聚丙烯酸酯胶膜存在热粘冷脆且易燃的缺点，其应用受到了限制。因此，需要对其进行改性。本论文以2-羟乙基甲基丙烯酸酯磷酸酯（PM-2）、乙烯基三乙氧基硅烷（TEOS）、2-丙烯酰胺-2-甲基丙磺酸（AMPS）作为功能单体，采用种子乳液聚合法，制备了改性丙烯酸酯乳液。实验结果表明，当BA+MMA为30%，乳化剂、引发剂、PM-2、TEOS和AMPS分别为单体用量的6%、1.2%、2%、4%、4%和3%时，制备的改性乳液稳定性良好，拉伸强度从改性前的3.21MPa提升到改性后的7.12MPa，改性聚丙烯酸酯胶膜的阻燃性能达到最高阻燃级别94V-0级。由此可见，改性能显著提高聚丙烯酸酯胶膜的力学强度和阻燃性能。本研究为聚丙烯酸酯乳液的进一步研究和应用提供了参考。
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环境友好丙烯酸高吸水树脂的制备及性能和应用研究
Preparation and Performance and Application Research of Environmentally Friendly Acrylic Superabsorbent Resin
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- Keywords: Water absorbent resin; Acrylic acid; 2-acrylamide-2-methyl-1- propane sulfonic acid (AMPS); Carboxymethyl cellulose (CMC); Biodegradable吸水树脂; 丙烯酸; AMPS CMC; 可降解
- Abstract: The modified acrylic super absorbent resin was prepared by aqueous solution polymerization with 2-acrylamide-2-methyl-1-propane sulfonic acid (AMPS) and carboxymethyl cellulose (CMC) containing strong hydrophilic and salt tolerant groups as modifiers. the absorption ratio of the prepared resin in deionized water and normal saline increased from 1496 g/g and 129 g/g before modification to 2944 g/g and 275g / g respectively, and the absorption ratio of soil leaching solution was 267.3 g/g. At the same time, the study on the application of the water absorbent resin in the planting of legumes found that the soil using the modified water absorbent resin can improve the germination rate of mung beans and soybeans and prolong its survival time. After 20 days of soil burial, the water absorbent resin can be degraded. At 38 ℃ , the modified acrylic resin can be degraded by 76% under the action of cellulase for 6 hours. It can be seen that the modification improves the liquid absorption capacity, salt resistance and degradation performance of acrylic water absorbent resin. As a soil water retaining agent, the water absorbent resin can improve the soil environment, save agricultural water and help agricultural development. It has important social value and environmental significance.本文以含有强亲水和耐盐基团的2-丙烯酰胺基-2-甲基-1-丙烷磺酸（AMPS）和羧甲基纤维素（CMC）为改性剂，采用水溶液聚合法，制备了改性丙烯酸高吸水树脂，其在去离子水和生理盐水中的吸液倍率分别从改性前的1496g/g和129g/g提高到2944g/g和275g/g，对土壤浸出液的吸收倍率为267.3g/g。同时，该吸水树脂用于豆类植物的种植研究发现，使用改性吸水树脂的土壤能提高绿豆发芽率，并且延长它的存活时间，土埋20天后，该吸水树脂能降解，在38℃，纤维素酶作用6h，改性丙烯酸树脂降解76%。由此可见，改性提高了丙烯酸吸水树脂的吸液能力、耐盐性能和降解性能，该吸水树脂作为土壤保水剂使用，能改良土壤环境，节约农业用水，帮助农业发展，具有重要的社会价值和环境意义。
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