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UV固化有机硅改性丙烯酰胺型聚合物的合成及性能研究
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Abstract:
首先在低温条件下合成N-(3-羟丙基)丙烯酰胺(HPAA)，与氯硅烷以简单的方法合成了五种不同结构的丙烯酰胺型有机硅预聚体SPAA。然后在紫外光源下对SPAA进行光固化得到聚合物SPAAP。对预聚体和聚合物通过核磁共振氢谱(1H-NMR)和红外光谱(FT-IR)等方法进行表征。最后对聚合物SPAAP的玻璃化转变温度、交联度、附着力、硬度、耐水性、耐酸碱性和可见光透过率等性能进行测试。结果表明：光固化聚合物SPAAP (1)~(5)的交联度均较高(97~99%)，在玻璃化转变温度、交联度、附着力、硬度、耐水性、耐酸碱性和可见光透过率等性能上都表现良好；其中聚合物SPAAP (1)的硬度最高(1H)，SPAAP (2)的可见光透过率最高(92%)，SPAAP (4)具有最好的耐水性、耐酸碱性，SPAAP (5)的玻璃化转变温度最高(212.01℃)等。
Firstly, N-(3-hydroxypropyl)acrylamide (HPAA) was synthesized under low-temperature conditions, and five acrylamide-type organosilicon prepolymers (SPAA) with different structures were synthesized from HPAA and chlorosilane by a simple method. Then, the SPAA prepolymers were photocured under an ultraviolet light source to obtain the polymers (SPAAP). The prepolymers and polymers were characterized by methods such as proton nuclear magnetic resonance (1H-NMR) and Fourier-transform infrared spectroscopy (FT-IR). Finally, the properties of the polymer SPAAP, including glass transition temperature, crosslinking degree, adhesion, hardness, water resistance, acid and alkali resistance, and visible light transmittance, were tested. The results showed that The photocured polymers SPAAP (1)~(5) all exhibited high crosslinking degrees (97~99%) and demonstrated excellent performance in multiple properties, including glass transition temperature, crosslinking density, adhesion, hardness, water resistance, acid/alkali resistance, and visible light transmittance. Among them, polymer SPAAP (1) had the highest hardness (1H), polymer SPAAP (2) had the highest visible light transmittance (92%), polymer SPAAP (4) had the best water resistance and acid-alkali resistance, and polymer SPAAP (5) had the highest glass transition temperature (212.01？C).
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