共查询到18条相似文献,搜索用时 109 毫秒
1.
2.
设计并合成了一种户内消光粉末涂料用混合型聚酯树脂,并以其制备了粉末涂料。分别讨论了聚酯树脂的酸值、粘度和固化促进剂含量对粉末涂料消光性能的影响,同时也考察了不同种类的消光剂及其用量对粉末涂料消光性能的影响。 相似文献
3.
4.
5.
6.
7.
通过化学共聚改性的方法在粉末涂料聚酯树脂中引入有机硅,合成了粉末涂料用有机硅改性聚酯树脂,研究了有机硅中间体用量对改性聚酯树脂黏度、相对分子质量及其分布、玻璃化转变温度和热失质量的影响。并用其制备了平面和消光 2种粉末涂料,研究了不同有机硅中间体加量对涂层性能的影响。结果表明:有机硅中间体加量为 42%的改性聚酯树脂具有合适的玻璃化转变温度和黏度,制备的粉末涂层具有良好的附着力;在 350℃左右的高温下平面涂层具有优秀的保光率,加入云母粉的消光涂层则具有更好的弯曲性能。有机硅改性聚酯树脂在兼顾耐热性和平面高光的同时,又解决了使用纯有机硅树脂的价格偏高的问题,为市场提供了耐高温粉末涂料用聚酯树脂的更多选择性。 相似文献
8.
9.
10.
11.
12.
Katsuhiko Okadaa Kouichi Yamaguchi Hirofumi Takeda 《Progress in Organic Coatings》1997,34(1-4):169-174
There have been many attempts to improve weather durability in polyester powder coatings. However, no effective suggestion improves weather durability without sacrificing other properties, such as mechanical properties. A novel polyester powder coating system is described in this article, with especially excellent weather durability. This system was based on an acrylic/polyester hybrid curing system composed of polyester resin showing excellent weather durability and the new GMA-acrylic hardener which has a ‘soft segment' in its structure. The advanced acrylic/polyester hybrid curing system shows both excellent weather durability and good mechanical properties. 相似文献
13.
14.
15.
16.
17.