Phenolic resin foam material and preparing method thereof

Abstract

The invention discloses a phenolic resin foam material and a preparing method thereof. The phenolic resin foam material is composed of an A component and a B component, wherein the A component is composed of 100 parts by weight of A-stage phenolic resin, 10-20 parts by weight of medium-viscosity chitosan, 10-30 parts by weight of lignin polyether polyols, 0-20 parts by weight of aluminium hydroxide, 5-10 parts by weight of surface active agents, 10-20 parts by weight of foaming agent dichlorofluoroethane (HCFC-141b) and 10-30 parts by weight of diluent methyl formate, and the B component contains 20-50 parts by weight of compound toughening acid catalysts. The preparing method includes: respectively mixing the A component and the B component uniformly, mutually mixing the A component and the B component, and pouring the mixture into a mold for foaming at temperature of 80 DEG C to obtain the phenolic resin foam material. The phenolic resin foam material has high compressive strength and flexibility while not being reduced in fireproof and flame retardant property, and is suitable for outer wall heat preservation construction of buildings with high fireproof level requirements.

Description

technical field [0001] The invention belongs to the technical field of external wall insulation, and in particular relates to a phenolic resin foam material and a preparation method thereof. Background technique [0002] my country's population is highly dense, the buildings are dense, and most of the buildings are multi-storey and high-rise. In 2010, the total construction area of ​​housing in my country reached 51.9 billion m2. However, among the nearly 2 billion m2 completed area each year, only about 3% are energy-saving buildings, and 97% are still high-energy-consuming buildings. According to statistics, for a new building of 10 million m2, if the goal of energy saving of 50% is achieved, the emission of CO2 can be reduced by about 10,000 tons per year, and 30 kg of standard coal can be saved per m2 of building area, and 300,000 yuan of new buildings can be saved every year. tons of standard coal. It can be seen that my country's building energy-saving potential is v...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the main problem that the toughening and flame retardancy of the existing phenolic foam materials at home and abroad are difficult to coordinate, and in combination with the research progress of the current phenolic resin foam toughening technology, a method of using chitosan fiber to improve the first stage is proposed. The phenolic resin is reinforced and modified, and the toughness is further improved by combining the composite toughening acid catalyst. At the same time, the reactive flame retardant tetrakis hydroxymethyl phosphorus sulfate is added to achieve a good combination of toughening and flame retardancy. Body insulation, namely phenolic resin foam