CAJ | 학술논문

以相对分子质量低的环氧树脂E－51为原料，丙氨酸（Ala）与苯丙氨酸（Pha）为复合改性剂，制备出稳定的水性环氧树脂，采用红外光谱（FT-IR）、化学滴定等方法对产物进行了表征和分析，优选了综合性能优良的固化剂与制备的水性环氧树脂固化成膜，同时对涂膜性能进行测试。结果表明：适宜的反应温度为90℃，反应时间为100min；当复合改性剂n（Alal：n（Pha）=2：3时，此时制备的水性环氧树脂，与汉中H228Z水性环氧固化剂固化所形成的涂膜具有最优的综合性能，涂膜附着力1级，柔韧性1mm，耐冲击性40cm，铅笔硬度5H，耐酸性（5％Hcl）24h，耐碱性（5％NaOH）72h。
이상대분자질량저적배양수지E－51위원료，병안산（Ala）여분병안산（Pha）위복합개성제，제비출은정적수성배양수지，채용홍외광보（FT-IR）、화학적정등방법대산물진행료표정화분석，우선료종합성능우량적고화제여제비적수성배양수지고화성막，동시대도막성능진행측시。결과표명：괄의적반응온도위90℃，반응시간위100min；당복합개성제n（Alal：n（Pha）=2：3시，차시제비적수성배양수지，여한중H228Z수성배양고화제고화소형성적도막구유최우적종합성능，도막부착력1급，유인성1mm，내충격성40cm，연필경도5H，내산성（5％Hcl）24h，내감성（5％NaOH）72h。
A steady waterborne epoxy resin was prepared by using epoxy resin E-51 which has a relatively lower molecular weight as raw materials, alanine and phenylalanine as composite modifier. Then the product was characterized and analyzed by infrared spectrum （FT-IR） and chemistry titration methods. Choose curing agent which has optimal overall properties, and then add it to prepared waterborne epoxy resin and formed film and the cured film properties were tested. The results show that, appropriate reacting temperature is 90 ℃ and time is 100 rain; add H228Z waterborne epoxy curing agent into the prepared waterborne epoxy resin with a ratio of n （Ala）： n （Pha） = 2 ： 3, then formed film and the film has the optimal overall properties. The film adhesion is 1 Level, flexibility is 1 mm, impact strength is 40 cm, hardness is 5H, acid resistance （to 5%HCl） is 24 h and alkali resistance （to 5%NaOH） is 72 h.