Flame retardant impregnated paper

Abstract

The invention belongs to the technical field of impregnated paper production and relates to a flame retardant impregnated paper. A production technology of the flame retardant impregnated paper comprises impregnation, drying, secondary gluing and baking drying. Resin glue used by the flame retardant impregnated paper impregnation and gluing contains amidinourea phosphate and ammonium octamolybdate. The impregnation process comprises impregnation on a raw paper according to an impregnation amount ratio of 50-80%. The drying process comprises carrying out two-stage drying on the impregnated paper subjected to the primary impregnation process at a temperature of less than or equal to 140 DEG C. The secondary gluing process comprises coating glue on upper and bottom surfaces of the impregnated paper subjected to the primary impregnation process by two gluing rollers according to an impregnation amount ratio of 180-280%. The baking drying process comprises carrying out four-stage drying by an oven at a temperature of more than 140 DEG C. Through impregnation and coating of the surface of the raw paper by fire retardant-containing resin glue, the impregnated paper flame resistance is greatly improved.

Description

technical field

[0001] The invention belongs to the technical field of impregnated paper production, in particular to a flame-retardant impregnated paper. Background technique

[0002] Paper materials with plant fiber as the main component have the characteristics of good air permeability, light weight, good printability, and strong decoration, and play a very important role in people's lives and social development. However, paper materials are extremely flammable, and the burning speed is fast, which can easily cause the rapid development of fire. Therefore, paper materials should be treated with flame retardant. Among the existing flame retardants, halogenated flame retardants have better flame retardant effect, but because they will produce a lot of toxic fumes when burned, their use has been restricted by European and American countries.

[0003] The impregnated paper is a kind of porous material, interwoven by fibers, there are many gaps between the fibers, and the in...

Examples

Embodiment Construction

[0014] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the protection scope of the present invention.

[0015] The invention provides a flame-retardant impregnated paper. The resin glue used for impregnating and coating the flame-retardant impregnated paper contains amidinourea phosphate and ammonium octamolybdate.

[0016] Among the non-halogenated flame retardants, the intumescent flame retardants with phosphorus and nitrogen as the main components have the most development potential. When the polymer materials containing such flame retardants are heated, a uniform carbon foam layer is formed on the surface. , play the role of heat insulation, oxygen insulation, smoke suppr...

technical field

[0001] The invention belongs to the technical field of impregnated paper production, in particular to a flame-retardant impregnated paper. Background technique

[0002] Paper materials with plant fiber as the main component have the characteristics of good air permeability, light weight, good printability, and strong decoration, and play a very important role in people's lives and social development. However, paper materials are extremely flammable, and the burning speed is fast, which can easily cause the rapid development of fire. Therefore, paper materials should be treated with flame retardant. Among the existing flame retardants, halogenated flame retardants have better flame retardant effect, but because they will produce a lot of toxic fumes when burned, their use has been restricted by European and American countries.

[0003] The impregnated paper is a kind of porous material, interwoven by fibers, there are many gaps between the fibers, and the in...

Examples

Embodiment Construction

[0014] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the protection scope of the present invention.

[0015] The invention provides a flame-retardant impregnated paper. The resin glue used for impregnating and coating the flame-retardant impregnated paper contains amidinourea phosphate and ammonium octamolybdate.

[0016] Among the non-halogenated flame retardants, the intumescent flame retardants with phosphorus and nitrogen as the main components have the most development potential. When the polymer materials containing such flame retardants are heated, a uniform carbon foam layer is formed on the surface. , play the role of heat insulation, oxygen insulation, smoke suppr...