摘要： 以甲基丙烯酸甲酯（MMA）和丙烯酸丁酯（BA）为主单体，甲基丙烯酸（MMA）和γ－甲基丙烯酰氧基丙基三甲氧基硅烷（A-174）为功能单体，采用反应型乳化剂NRS-10，通过预乳化半连续乳液聚合工艺合成了自交联丙烯酸酯乳液，并通过添加锌铵交联剂，合成了性能优异的木器底漆用自
交联丙烯酸酯乳液。主要考察了乳液Tg，MMA、过硫酸铵（APS）、NRS-10、A-174 和锌铵交联剂用量对乳液及其涂膜性能的影响，通过实验得出：当乳液设计Tg为40 ℃，MMA 用量为8%（以单体的总质量计，下同），APS 用量为0.3%，NRS-10 用量为2.5%，A-174 用量为2%，且n（-COO^- ）∶n（Zn ²⁺ ）为8:1时，所制备的自交联丙烯酸酯乳液配制成木器底漆，涂膜具有硬度高、易打磨、耐水性优异等特点。

关键词: 自交联, 丙烯酸酯乳液, 锌铵交联剂, 木器底漆, 打磨性

Abstract: A self-crosslinking acrylate emulsion was synthesized via pre-emulsification semi-continuous emulsion polymerization process by using methyl methacrylate(MMA) and butyl acrylate (BA) as the main monomers, methacrylic acid(MAA) and γ-methacryloxypropyltrimethoxysilane (A-174 ) as functional monomers and NRS-10 as reactive emulsifier, and then was mixed with zinc ammonium  crosslinking agent to form a high performance self-crosslinking emulsion for wood primer. The influence of the Tg of emulsion, the dosage of MAA, APS, NRS-10, A-174 and zinc ammonium crosslinking agent on properties of emulsion and film therefrom was investigated. The results showed that the wood primer derived from self-crosslinking acrylate emulsion exhibited high hardness, easy-to-rub and good water resistance when the T of the emulsion was 40 ℃. the amount of MAA was 8%, the amount of APS was 0.3%, the amount of NRS-10 was 2.5%, the amount of A-174 was 2%, the molar ratio of carboxyl and zinc ions was 8: 1.

Key words:  self-crosslinking, aerylate emulsion, zinc ammonium crosslinking agent, wood primer, rubbing property