烃溶性丙烯酸酯共聚物的制备及性能表征

Synthesis and characterization of hydrocarbon-soluble acrylate copolymers

以甲基丙烯酸异辛酯(EHMA)、甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)为原料,采用自由基溶液聚合法合成烃溶性丙烯酸酯共聚物(HAC)。利用FT-IR、XRD对聚合物的结构进行表征,测试结果表明合成了HAC共聚物,并重点考察了不同软硬单体质量比对HAC胶膜成膜快慢、玻璃化转变温度、耐水性、硬度、热稳定性的影响。结果表明,当软硬单体质量比为7∶13时,成膜速度可缩短至1 min,膜的强度达2 H,可耐100℃高温,耐水性极好,达100%。与传统水性丙烯酸酯共聚物相比,合成的HAC胶膜具有优良的耐水性,接触角达117.6°。

A series of hydrocarbon-soluble acrylates copolymers（ HACs） are synthesized through the free radical solution polymerization method by using isooctyl methacrylate（ EHMA）,methyl methacrylate（ MMA） and butyl acrylate（ BA） as monomers.The structures of prepared samples are investigated by FT-IR and XRD. The detection results by FTIR and XRD reveal that the synthesized samples are the desired HACs.The effects of various mass ratios between soft and hard monomers on the formation speed of HACs film,glass transition temperature,water resistance,hardness and thermal stability are emphatically investigated.The results reveal that when the mass ratio between soft monomer and hard monomer is 7 ∶13,the film formation rate can be shortened to 1 min,the strength of the film can reach 2 H,the HACs film can stand by the temperature as high as 100℃,and its water resistance is excellent and can reach 100%.Compared with the traditional waterborne acrylate copolymers,this HACs film has excellent water resistance with a contact angle of 117. 6°.