The raw materials used were methyl methacrylate,n-butyl acrylate,hydroxyethyl methacrylate and acrylic acid as acrylic monomers through graft copolymer with E-44,and then extended the chain further with organosiloxane(KH-570) as a silicone monomer.As a result,hydroxyl group and organosilicon unit were incorporated into epoxy molecules and then the waterborne acrylic resin containing hydroxyl group modified by KH570/E-44 (WKEA)was produced.FT-IR was used to identify the structure,the surface morphology was determined by SEM and the thermal stability was determined by TGA.The results showed that when the dosage of initiator (azodiisobutyronitrile) accounts for 2.5% of the total acrylic monomer,KH-570 accounts for 3.5%,E-44 accounts for 12%,water absorption of cured film was 9.6%,pencil hardness was 5H,adhesive force was 1,impact Strength was 50kg·cm,the coating was uniform and endowed with remarkable heat resistance.
Wang Yonggui, Luo Xiaoting, Zhang Yan, Xia Feng, Zhang Hui, Xie Wenlong, Zhang Weigang, Wang Jianfeng
. Synthesis and property of waterborne acrylic resin containing hydroxyl group modified by KH570/E-44[J]. New Chemical Materials, 2020
, 48(8)
: 117
-120
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.08.025
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