CAJ | 학술논문

聚乙烯醇缩丁醛被广泛应用于油墨、花瓷、水松纸涂料、安全玻璃等许多领域，在国内外都有较好的应用市场。本实验通过对加料方式（加酸顺序）的探讨，发现后加酸优于先加酸。并且在m（PVA）∶m（正丁醛）=10∶7、反应体系pH值为3.0及缓慢滴加正丁醛的条件下，通过测定PVB胶粘剂的缩丁醛基含量和黏度，优选出制备PVB胶粘剂的最佳工艺条件。在以上条件都不变的情况下，使用聚合度为2099的PVA反应合成PVB的黏度和缩丁醛基的含量大大高于其他聚合度的PVA。
취을희순축정철피엄범응용우유묵、화자、수송지도료、안전파리등허다영역，재국내외도유교호적응용시장。본실험통과대가료방식（가산순서）적탐토，발현후가산우우선가산。병차재m（PVA）∶m（정정철）=10∶7、반응체계pH치위3.0급완만적가정정철적조건하，통과측정PVB효점제적축정철기함량화점도，우선출제비PVB효점제적최가공예조건。재이상조건도불변적정황하，사용취합도위2099적PVA반응합성PVB적점도화축정철기적함량대대고우기타취합도적PVA。
Polyvinyl butyral(PVB) has been widely used in many areas of ink,porcelain, tip-ping paper coatings, safety glass, etc., and it has a vast domestic and overseas market. Based on the feeding tests focusing on the sequence of adding acid, this study found that it is a better way to add acid in advance compared with adding acid later. Furthermore, through determining the butyral content and viscosity of PVB adhesive, this study discovered the optimum conditions for preparation of PVB adhesive: m (PVA): m (butyraldehyde) = 10:7, the pH value of reaction system is 3.0, and dropping butyraldehyde slowly. On the premise of keeping above conditions, the viscosity and butyral content of PVB synthesized with PVA with polymerization degree of 2099 are much higher than that of PVB synthesized with other polymerization degrees of PVA.