Quick-demolding two-component pultrusion polyurethane plate and preparation method thereof

• Main Authors: GOU PENGFEI, ZHOU BAINENG, ZHONG LIANBING, XIAO YI, ZHANG LI, XIONG GAOHU
• Format: Patent
• Language: Chinese; English
• Published: 08.07.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

The invention discloses a quick-demoulding bi-component pultrusion polyurethane plate and a preparation method thereof, the polyurethane plate is formed by pultrusion of a bi-component polyurethane resin system and reinforced fibers, and the bi-component polyurethane resin system comprises a white material component and a black material component; wherein the white material component is prepared from MN400, MN500, PPG (Polypropylene Glycol) series polyether polyol, glycerol, 1, 4 butanediol, a de-foaming agent, an antioxidant and a catalyst. The PPG polyether polyol is used as a white material component, under the condition of the same glass fiber content, the pultrusion demolding performance of the product is greatly improved, the lubricity of the product is improved, the tension of pultrusion production equipment is reduced, the splicing performance of the plate is improved, and the prepared polyurethane plate has better product appearance and better mechanical properties. 本发明公开了一种快速脱模双组分拉挤聚氨酯板材及其制备方法，聚氨酯板材