耐摩擦型全氟聚醚硅氧烷的制备与性能

Preparation and Properties of Abrasion Resistance Perfluoropolyether Silane

摘要:

本文探讨了全氟聚醚硅氧烷分子链结构、硅氧烷含量、分子量大小和助剂对涂层耐摩擦性能的影响。结果表明，具有CF3基团的全氟聚醚硅氧烷涂层具有良好的疏水疏油性能，其中水和正十六烷的接触角分别大于113?和66?。高分子量、高柔顺性分子链和较高硅氧烷含量都能改善涂层的耐摩擦性能，而异丙醇助剂能够提高涂层的耐摩擦稳定性。本文发现，分子量为2500g/mol的双端Z型全氟聚醚硅氧在1 035 g负载下，经钢丝绒循环摩擦2500次后水接触角仍保持100?以上。

Abstract:

The effects of the molecular chain structure, silane content, molecular weight and additives on the tribological properties of the coatings were investigated. The results show that the perfluoropolyether silane coating with CF3 group has good hydrophobicity and hydrophobicity, and the contact angle between water and n-hexadecane is more than 113 ?and 66 ? respectively. High molecular weight, high flexibility molecular chain and higher silane content can improve the abrasion resistance of the coating, and the fluorine-containing alcohol additives can improve the friction stability of the coating. At 1035 g load, the water contact angle of Di-Z-perfluoropolyether silane is over 100?after rub 2500 cycles with steel wool.