国家/地区 中国（2）
IPC部 B（2）
IPC大类 C09（2）
IPC小类 C09D（2）
IPC C09D163/00（2）
发明人 LIU X（2）
公开年 2023（2）
申请年 2022（2） 
专利权人

Thermal insulation and sound-absorbing silica aerogel composite material for heat preservation, is composed of base material layer and aerogel fireproof slurry layer arranged on surface of base material layer, where base material layer is silica aerogel felt prepared by spraying process.

HE L, ZHAI S, CHANG A, YANG J, LIU X

Preparing coating for screw thread, comprises e.g. providing workpieces with screw thread, pretreating screw thread part of workpieces with screw thread; sandblasting workpiece with screw thread after pretreatment; and preheating workpiece with screw thread after sandblasting.

SUN J, WANG Y, WANG L, LI R, SONG X, LIU X