Processing technology of polyurethane foam for fireproof insulation board

Abstract

The invention discloses a processing technology of polyurethane foam for a fireproof insulation board, and belongs to the technical field of chemical engineering. The processing technology comprises following steps: stirring and mixing a biomass liquefied product, water, triethylene diamine, silicone oil and catalyst, then adding the modified mixed biomass crushed materials and enzymatic chitosanliquid; performing a stirring reaction, then adding castor oil, isoamyl acetate and modified graphene oxide are added, and performing a heating reaction; sequentially carrying out injection molding, foaming, curing and demolding to prepare the polyurethane foam based on the biomass raw material. In the preparation process, calcium oxide deposited in the modified mixed biomass crushed aggregates reacts with water, so that calcium ions are fused into the system, and the calcium ions can promote cross-linking of the enzymed chitosan to form a three-dimensional network, so that deposited aluminumoxide and iron oxide of the system are fixed, and the mechanical property of the system is improved. The polyurethane foam based on the biomass raw material provided by the invention has excellent mechanical properties and thermal insulation properties.

Description

technical field [0001] The invention belongs to the technical field of polyurethane foam, and in particular relates to a processing technology of polyurethane foam used for a fireproof insulation board. Background technique [0002] Due to its good physical and chemical properties, polyurethane materials are widely used in the fields of automobiles, furniture, construction and packaging. Polyurethane has developed very rapidly since its industrialization, and the current annual output has exceeded 10 million tons. However, traditional polyurethane materials are difficult to degrade. A large amount of polyurethane will form "white pollution" after being discarded, which will put a huge pressure on the environment. Moreover, the main raw material for making polyurethane, polyether or polyester polyol, mainly comes from petrochemical raw materials. The shortage of petroleum resources and the high price of petroleum have seriously restricted the development of polyurethane mate...

AI Technical Summary

Problems solved by technology

However, there are the following defects in practical application: the gas-phase thermal conductivity of CO2 is as high as 16.3mW / m·k, and the thermal insulation performance of the prepared foam is not good; the CO2 gas in the foam diffuses outwards too fast, and the dimensional stability of the foam decreases; The fluidity of the water foaming system is not good, the consumption of isocyanate increases the production cost, the prepared foam is brittle, and the mechanical properties are not good, etc.