Safekey Engineering Technology (zhengzhou), Ltd.

Xinyang Sunny Optics Co., Ltd.

Lei Wang

Peng Zhao

Hongyuan Fang

Chengchao Guo

Chao Zhang

Guobin Qiao

Mingrui Du

Weihong Ding

Rui Du

A silicate modified polymer foam material for filling and sealing contains prepolymerized isocyanate and a silicate modified aqueous solution with a mass ratio in a range of 1:(1.2-1.4). In the prepolymerized isocyanate, a mass percentage of P is 4.4%, a mass percentage of N is 7.9%, and a mass percentage of —NCO is 11.9%. The silicate modified aqueous solution includes liquid sodium silicate, small molecule alcohol, water and a catalyst, wherein the liquid sodium silicate, the small molecule alcohol, the water and the catalyst account for 63-66%, 17-20%, 14-17% and 1.5-2.5% of the weight of the silicate modified aqueous solution respectively. A method of preparing the silicate modified polymer foam material for filling and sealing includes mixing the prepolymerized isocyanate with the silicate modified aqueous solution.

Silicate modified polymer foam material for filling and sealing

The application relates to an infrared cut-off filter, which includes: a substrate composed of white glass and an infrared cut-off film layer plated on one surface of the white glass; a spin-coated layer plated on the other surface of the white glass; and a reflection-reducing film layer plated on the spin-coated layer; the spin-coated layer includes a bottom layer and an absorbing layer each composed of an organic substance. The infrared cut-off filter has a stable structure, a high degree of firmness between layers, and a low cost.

Infrared cut-off filter and preparation method thereof

Growing community of inventors

Henan, China

Lei Wang