膨润土微粒对ASA的乳化作用和施胶性能的影响分析

Influencing analysis of emulsification by bentonite micro-particle on ASA and its sizing performance

研究了膨润土微粒对ASA的乳化与稳定作用,同时检验了所制备的ASA乳液的施胶性能。结果表明,当改性膨润土用量6%～8%(相对于ASA)、初始油相体积分数为25%～35%时可将ASA乳化成水包油(O/W)型Pickering乳液,所制备的ASA乳液具有良好的稳定性和施胶性能,且适量加入硫酸铝用于杨木BCTMP浆抄片能够大幅度提高ASA乳液的施胶效果。

Emulsification and sizing performance of bentonite stabilized in ASA emulsion were investigated.The results show that when ASA volume fraction is 25%～35% and dosage of modified bentonite is 6%～8% wt based on ASA,stable Pickering emulsion（O/W type） with small droplet size and excellent sizing performance can be obtained.Furthermore,by papermaking with BCTMP and aluminum sulfate added,the sizing efficiency of the obtained ASA emulsions can be enhanced remarkably.