Manufacturing technology of heat-set flame-retardant felt

Abstract

The invention discloses a manufacturing technology of heat-set flame-retardant felt. The manufacturing technology sequentially comprises the steps of preparation of raw materials, opening, airflow netforming, baking, slicing and checking, mould pressing and manufacturing and installing of finished products. According to the manufacturing technology, flame-retardant treatment are conducted twice,for the first time of flame-retardant treatment, in the stage of the preparation of the raw materials, flame retardant is utilized for dipping and airing, and for the second time of flame-retardant treatment, powdery flame retardant is added in the process of airflow net forming. After two times of flame-retardant treatment, the flame retardant property is good, and epoxy resin in a mixture at UL94-V0 level can be half-cured in the baking stage and used for bonding other various raw materials. By means of the manufacturing technology, more environment-friendly epoxy resin is adopted for replacing phenolic resin in the prior art, and the mode of half-curing the epoxy resin is adopted for bonding various raw materials, which is more environmentally friendly. In the prior art, when the flameretardant property of the flame-retardant felt is improved, the sound insulation effect is lowered; by means of the manufacturing technology, the heat insulation property is also good on the premise that the flame retardant property is guaranteed.

Description

technical field [0001] The invention relates to the technical field of felt production, in particular to a production process of a thermosetting flame-retardant felt. Background technique [0002] The thermosetting flame retardant felt can be heated and cured into a three-dimensional structure product with certain rigidity and dimensional stability because of its material containing resin components. In addition to heat insulation, sound absorption is also an important factor in the investigation of vehicle grades. However, in the felt with powder as the binder, the amount of powder added is a contradiction between flame retardancy and sound absorption. The better the flame retardancy, the better the sound absorption. Therefore, the weight ratio between the two is the key technology of the material, and the thermosetting felt used to use phenolic resin as the main binder, but with strict environmental protection requirements, it must be replaced by new materials. Therefore,...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the deficiencies in the prior art, the present invention provides a production process of thermosetting flame-retardant felt, which solves the technical problem that the sound insulation performance and flame-retardant performance of the production process of the flame-retardant felt in the prior art cannot be balanced

Images