Abstract: A multi-crosslinking hydroxyl acrylate latex for wood varnish was developed bya semi-continuous emulsion polymerization process，with butyl acrylate（BA） and methyl methacrylate（MMA）as the main monomers，acrylic acid（AA）， hydroxyethyl methacrylate（HEMA）and diacetone acrylamide（DAAM）/ adipic acid dihydrazide（ADH）self-crosslinkingsystem as functional monomers. The influence of dosage and glass transition temperature（T_g） of HEMA，DAAM/ADH，AA on latex and film therefrom were investigated. The results showedthat when the hydroxyl groups content was 4%，and DAAM and AA accounted for 2% and 1.5% of the total monomer respectively，and the T_g of latex was 20 ℃（Ca.value），the preparedhydroxyl latex was used to formulate a two-component wood finish. The film showed a pencilhardness of 2H，adhesion of grade 0，excellent water resistance and good chemical resistance.

Key words: semi-continuous emulsion polymerization, multiple crosslinking, hydroxyl acrylate, wood finish

摘要： 以丙烯酸丁酯（BA）及甲基丙烯酸甲酯（MMA）为主单体，丙烯酸（AA）、甲基丙烯酸羟乙酯（HEMA）以及双丙酮丙烯酰胺（DAAM）/己二酸二酰肼（ADH）自交联体系为功能性单体，采用半连续乳液聚合工艺制备木器用多重交联羟基丙烯酸酯乳液。探究了 HEMA、DAAM/ADH、AA用量以及玻璃化转变温度（T_g）对乳液和涂膜性能的影响。结果表明：当羟基含量为 4%，DAAM、AA分别占单体总量的 2%、1.5%，且乳液 T_g设计为 20 ℃时，制备的羟基丙烯酸酯乳液配制成的双组分木器清漆，涂膜硬度可达 2H、附着力为 0级、耐水性优异且耐化学品性好。

关键词: 半连续乳液聚合, 多重交联, 羟基丙烯酸酯, 木器清漆

CLC Number: 

• TQ635. 3