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发明公开
CN107337986A 一种低分离邦定闪光银粉末涂料及其制备方法 无效 - 驳回

一种低分离邦定闪光银粉末涂料及其制备方法
摘要：
本发明公开了一种低分离邦定闪光银粉末涂料，其原料按重量份数包括以下组分：环氧树脂25～35份；端羧基聚酯树脂25～35份；羟基聚酯树脂10～15份；聚丙烯酸酯1～3份；苯偶姻0.3～0.5份；硅烷偶联剂1～1.5份；硫酸钡10～15份；轻质碳酸钙5～10份；钛白粉0～3份；表面包覆铝粉1～6份；邦定助剂1～2份。本发明还提出了一种低分离邦定闪光银粉末涂料的制备方法，通过称量配料、预混合、熔融挤出、研磨、筛分、邦定、筛分和成品包装得到一种低分离邦定闪光银粉末涂料，通过调整粉末的熔融粘度、玻璃化温度、邦定温度、邦定时间，使粉末与铝粉的颗粒充分的粘合，使其粘合率达到98～100％，降低了铝粉的分离率，延长了涂膜的使用寿命。
摘要（英）：

The invention discloses a low-separation bonding shining silver powder coating. The low-separation bonding shining silver powder coating is prepared from, by weight, 25-35 parts of epoxy resin, 25-35 parts of carboxyl-terminated polyester resin, 10-15 parts of hydroxyl polyester resin, 1-3 parts of polyacrylate, 0.3-0.5 part of benzoin, 1-1.5 parts of silane coupling agent, 10-15 parts of barium sulfate, 5-10 parts of light calcium carbonate, 0-3 parts of titanium dioxide, 1-6 parts of surface-coated aluminum powder and 1-2 parts of bonding additive. The invention further provides a preparation method of the low-separation bonding shining silver powder coating. Through ingredient weighing, premixing, melting extrusion, grinding, screening, bonding, screening and finished product packaging, the low-separation bonding shining silver powder coating is obtained; through adjustment of the melting viscosity, glass transition temperature, bonding temperature and bonding time of the powder, the powder fully bonds with particles of the aluminum powder, so that the bonding rate reaches 98-100%, the separation rate of the aluminum powder is reduced, and the service life of coating film is prolonged.

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