CAJ | 학술논문

以乙酸乙酯(EA)为溶剂,过氧化十二酰(LPO)为引发剂,将γ-甲基丙烯酰氧丙基三甲氧基硅烷(KH-570)和丙烯酸(AA)和/或丙烯酸十八酯(SA)共聚制备了粉状含硅丙烯酸聚合物(PAA)和含硅丙烯酸/丙烯酸十八酯聚合物(PSA)。用红外光谱(FT-IR)、透射电子显微镜(TEM)和热失重分析(TGA)等对产物结构、粒径和热性能进行了分析表征,考察了KH-570用量和放置时间对含硅聚合物在水溶液中的增稠性能及透光率的影响。结果表明：在酸性条件下,KH-570通过水解反应形成硅醇,发生自缩聚,与AA和/或SA聚合合成了核壳结构的含硅聚丙烯酸酯,这种聚合物固体粒径较小、分布均匀；随KH-570用量的增加,含硅聚合物水溶液的粘度先增加后降低,透光率降低；其水溶液的粘度和透光率先随放置时间的延长而提高,30 h后基本达到稳定。
이을산을지(EA)위용제,과양화십이선(LPO)위인발제,장γ-갑기병희선양병기삼갑양기규완(KH-570)화병희산(AA)화/혹병희산십팔지(SA)공취제비료분상함규병희산취합물(PAA)화함규병희산/병희산십팔지취합물(PSA)。용홍외광보(FT-IR)、투사전자현미경(TEM)화열실중분석(TGA)등대산물결구、립경화열성능진행료분석표정,고찰료KH-570용량화방치시간대함규취합물재수용액중적증주성능급투광솔적영향。결과표명：재산성조건하,KH-570통과수해반응형성규순,발생자축취,여AA화/혹SA취합합성료핵각결구적함규취병희산지,저충취합물고체립경교소、분포균균；수KH-570용량적증가,함규취합물수용액적점도선증가후강저,투광솔강저；기수용액적점도화투광솔선수방치시간적연장이제고,30 h후기본체도은정。
Both acrylic polymers (PAA) and acrylic/stearyl acrylate copolymers (PSA) containing silicone were prepared by polymerization of γ-methacryloxy propyl trimethoxyl silane (KH-570), acrylic acid (AA) and/or stearyl acrylate (SA) in the presence of lauroyl peroxide (LPO) as initiator and ethyl acetate (EA) as solvent. The structures, particle size and thermostability of the polymers were measured by infrared spectroscopy (FT-IR), laser particle size analyzer and thermogravimetric analyzer (TGA). The effects of the amount of KH-570 and the solution storage time on the viscosity and transmittance of acrylic polymers containing sili-cone in the aqueous solution were also investigated. The results showed that acrylic polymers containing sili-cone formed core-shel structure due to hydrolysis and self-condensation of KH-570 and then react with acrylic acid (AA) and/or stearyl acrylate (SA) under acidic condition. The particle size of acrylic polymers contain-ing silicone was smal and uniform-distribution. Increasing the amount of KH-570 in polymerization led to an increase firstly and then decrease in the viscosity of acrylic polymers containing silicone, while the transmit-tance of acrylic polymers containing silicone solution decreased as the increase of KH-570 dosage. The solu-tion storage resulted in an increase in viscosity and transmittance of acrylic polymers containing silicone within 30 h and then kept unchanged.