Biomass raw material-based polyurethane foam for fireproof thermal insulation boards, and processing technology thereof

Abstract

The invention discloses a biomass raw material-based polyurethane foam for fireproof thermal insulation boards, and a processing technology thereof, and belongs to the technical field of chemical engineering. The processing technology comprises the following steps: stirring and mixing a biomass liquefaction product, water, triethylenediamine, silicone oil and a catalyst, then adding crushed modified mixed biomass and an enzymatic chitosan liquid, stirring and reacting the above obtained mixture, adding castor oil, isoamyl acetate and modified graphene oxide, heating and reacting the obtained mixture, and sequentially carrying out injection molding, foaming, aging and demolding to obtain the biomass raw material-based polyurethane foam. Calcium oxide deposited in the crushed modified mixedbiomass reacts with water in the preparation process to make calcium ions merged in the system, and the calcium ions can promote the cross-linking of enzymatic chitosan to form a three-dimensional network, so alumina and iron oxide deposited in the system are immobilized, and the mechanical properties of the system are improved. The biomass raw material-based polyurethane foam provided by the invention has excellent mechanical properties and an excellent thermal insulation property.

Description

technical field [0001] The invention belongs to the technical field of polyurethane foam, and in particular relates to a polyurethane foam for a fireproof insulation board based on biomass raw materials and a processing technology thereof. 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...

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.