CAJ | 학술논문

以聚己二酸1，4-丁二醇酯、1，4-丁二醇、六亚甲基二异氰酸酯、异佛尔酮二异氰酸酯、N-（2-氨基乙基）-氨基乙烷磺酸钠、二羟甲基丙酸和乙二胺为主要原料，通过丙酮法合成了不同软段相对分子质量、硬段含量、硬段种类、亲水扩链剂及以液体石蜡共混改性5个系列的水性聚氨酯（ WPU）乳液。采用FT-IR表征了WPU的结构和氢键化程度，采用DSC和TG表征了各系列WPU胶膜的结晶性和耐热性。结果表明，硬段含量较高、硬段较规整及添加了液体石蜡的WPU的氢键化程度较高；以较高相对分子质量的聚酯多元醇作为软段、分子结构规整的二异氰酸酯作为硬段、氨基磺酸盐作为亲水扩链剂及以液体石蜡改性所制备的WPU的结晶性较好；WPU胶膜结晶性的改善有助于提高其耐热性能。
이취기이산1，4-정이순지、1，4-정이순、륙아갑기이이청산지、이불이동이이청산지、N-（2-안기을기）-안기을완광산납、이간갑기병산화을이알위주요원료，통과병동법합성료불동연단상대분자질량、경단함량、경단충류、친수확련제급이액체석사공혼개성5개계렬적수성취안지（ WPU）유액。채용FT-IR표정료WPU적결구화경건화정도，채용DSC화TG표정료각계렬WPU효막적결정성화내열성。결과표명，경단함량교고、경단교규정급첨가료액체석사적WPU적경건화정도교고；이교고상대분자질량적취지다원순작위연단、분자결구규정적이이청산지작위경단、안기광산염작위친수확련제급이액체석사개성소제비적WPU적결정성교호；WPU효막결정성적개선유조우제고기내열성능。
Five series of waterborne polyurethane emulsions , respectively with different relative molecular masses of soft segments , different kinds of hard segment , different hard segment contents , different hydrophilic chain exten-ders as well as with blending modification by liquid paraffin were synthesized via the actone method with poly -1, 4-butylene adipate glycol , 1,4-butanediol , hexamethylene diisocyanate , isophorone diisocyanate , N-(2-aminoethyl )-amino ethane sulphonated sodium , dimethylol propionic acid and ethylenediamine as the main raw materials .Then, the structure and hydrogen bonding of WPU were characterized by means of FT-IR, and the crystallinity and ther-mostability of WPU films were determined respectively through DSC and TG .The results indicate that ( 1 ) higher contents and more-defined structure of hard segment as well as the addition of liquid paraffin can increase hydrogen bonding degree of WPU;(2) with polyester polyol of higher relative molecular mass as the soft segment , diisocya-nate of regular structure as the hard segment , sulphamate as the hydrophilic chain extender and liquid paraffin as the modifier, WPU films show higher crystallinity; and (3)higher crystallinity of WPU films helps improve their thermostability .