Polyurethane prepolymer and polyurethane material for steel wire rope carrier roller of crane and preparation method of polyurethane prepolymer and polyurethane material

• Main Authors: YI YUHUA, ZHOU XIN
• Format: Patent
• Language: Chinese; English
• Published: 05.08.2022
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention discloses a polyurethane prepolymer for a steel wire rope carrier roller of a crane, which comprises the following components in parts by weight: 98-102 parts of polyether polyol; 1.5 to 6.0 parts of fumed silica; 31 to 46 parts of 2, 4-toluene diisocynate; and 0.01 to 0.08 part of an organic bismuth zinc composite catalyst. The invention further discloses a preparation method of the polyurethane prepolymer, a polyurethane material for the crane steel wire rope carrier roller and a preparation method of the polyurethane material. The polyurethane material for the crane steel wire rope carrier roller is good in wear resistance, and the service life of the carrier roller and a steel wire rope is long; the polyurethane on the roller surface is tough and balanced, and the steel wire rope is not damaged or damaged by the steel wire rope; and the polyurethane on the roller surface is firmly bonded with the metal roller core, and does not loosen in the use process. 本发明公开了一种吊车钢丝绳托辊用聚氨酯预聚体，按重量份数计，包括聚醚多元醇