Waterborne polyurethane high-resilience plastic foam for automobile seats and preparation process thereof

Abstract

The invention discloses waterborne polyurethane high-resilience plastic foam for automobile seats and a preparation process thereof. The plastic foam is prepared from the following raw materials in parts by weight: 70-80 parts of glycerol, 25-30 parts of ethylene oxide, 30-35 parts of propylene oxide, 4-8 parts of liquid paraffin, 3-5 parts of polypropylene oxide-ethylene oxide copolyether, 160-170 parts of methylene diphenyl diisocyanate, 6-8 parts of potassium isooctanoate, 2-4 parts of quaternary ammonium formate, 5-7 parts of polydimethylsiloxane, 3-7 parts of sodium acetate, 8-12 parts of aluminium hydroxide, 6-10 parts of carbon black, 4-7 parts of antioxidant TNP, 3-5 parts of ultraviolet absorber UVP-327, 2-3 parts of butyl stearate, 7-11 parts of organosilicon foam stabilizer and 10-12 parts of auxiliaries. The polyurethane high-resilience plastic foam prepared by the preparation process disclosed by the invention has a great resilience, improves the quality of plastic foam, reduces the cost of the plastic foam, consolidates the stability of the plastic foam, and the like; the automobile seats filled by the plastic foam disclosed by the invention have the advantages of good resilience, flame retardance, safety, environment friendliness and the like.

Description

technical field [0001] The invention relates to a water-based polyurethane high-resilience plastic foam for car seats and a preparation process thereof. Background technique [0002] Car seats mostly use high-resilience sponge. Sponge is a kind of polyurethane foam, which belongs to soft polyurethane foam. Because of its porous honeycomb structure, it has excellent softness, elasticity, water absorption and water resistance. Widely used in sofa, mattress, clothing, flexible packaging and other industries. With the development of the automobile industry, sponges for car seats are getting more and more attention. At present, there are mainly the following types of car seat sponges: (1) TDI system seat sponge: this type of seat sponge has low relative density, large foaming volume, and comfortable hand feeling, but its supporting force is insufficient and its resilience is insufficient. , the raw materials are highly toxic, and an unbearable smell will be emitted during the p...

AI Technical Summary

Problems solved by technology

At present, there are mainly the following types of car seat sponges: (1) TDI system seat sponge: this type of seat sponge has low relative density, large foaming volume, and comfortable hand feeling, but its supporting force is insufficient and its resilience is insufficient. , the raw materials are highly toxic, and an unbearable smell will be emitted during the production process, which will seriously damage people's health; (2) TM system seat sponge: this kind of sponge feels comfortable, has good resilience, and its foaming volume is inferior to TDI system, but there are still some highly toxic TDI raw materials in its raw materials, and the smell in the production workshop is still very strong; (3) MDI system seat sponge: this type of seat sponge has better resilience, high indentation hardness, and raw material smell Small, so it has been greatly developed, but the resilience of the current MDI system car seat sponge is relatively weak, and its fire resistance, hardness, tear strength, tensile strength and other properties are relatively weak, and it is easy to break during use, which affects The quality of items made of high resilience sponge also relatively reduces the service life of the car seat