A kind of impact-resistant, flame-retardant liner and its preparation method

Abstract

The invention provides an impact-resistant and flame-retardant lining board and a preparation method thereof. The impact-resistant and flame-retardant lining board is prepared by paving multi-layer phenolic resin prepreg, and the outermost layer of the phenolic resin prepreg is paved There is a surface decorative film; the raw materials for the preparation of the phenolic resin prepreg include phenolic resin and reinforcing materials, the reinforcing material is fiber fabric, and the raw materials for the preparation of the phenolic resin include the following components in terms of parts by mass: 0-100 parts of thermoplastic phenolic resin , 0-100 parts of thermosetting phenolic resin, 1-15 parts of flame retardant, 5-100 parts of toughening agent, 0.05-1 part of coupling agent, and 0-20 parts of curing agent; among them, thermoplastic phenolic resin and The thermosetting phenolic resin is not 0 parts at the same time. The impact-resistant, flame-retardant liner and its preparation method, through the improvement of resin formula and prepreg preparation technology, develop a phenolic resin with high toughness, high flame retardancy, low smoke and low toxicity, and cooperate with the liner configuration design , The optimization of composite material forming technology has obtained the composite material liner with impact resistance and high flame retardancy.

Description

technical field [0001] The invention belongs to the technical field of phenolic resin composite materials, and in particular relates to an impact-resistant and flame-retardant liner and a preparation method thereof. Background technique [0002] Due to the advantages of excellent specific strength, specific modulus, corrosion resistance and fatigue resistance, composite materials are more and more widely used in civil aircraft. Composite materials account for a large proportion of aircraft, and the lighter the weight, the lower the energy consumption, and the more competitive the market. Aircraft cargo hold lining is a composite material in the cabin. It is a laminate with a thickness of 0.17mm~1.8mm. It is installed on the metal beam of the cargo hold of a civil aircraft. Flame retardancy, such as Boeing and COMAC's requirements for cargo hold lining materials, surface weight ≤ 1464 g / m 2 , drop hammer impact 21.7 J, drum peel strength 14.8 Nmm / mm, 4min smoke density ≤ 50...

AI Technical Summary

Problems solved by technology

[0004] However, there are more rigid groups such as benzene rings in the traditional phenolic resin structure, resulting in high brittleness of the cured product; and the water molecules released by the phenolic resin during the curing process will affect the mechanical properties of the phenolic material, making the phenolic resin material in The application field of civil aircraft has always been restricted, so the modification and optimization of phenolic resin matrix and the research of new prepreg preparation process have always been the focus of attention.

Due to the late start of the development of civil aircraft materials in China, the liners made of modified phenolic prepregs currently on the market cannot meet the performance requirements of civil aircraft, and there are no products and raw materials that have passed airworthiness certification

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