A kind of high flame retardant felt for automobile engine compartment and its manufacturing method

An engine compartment, high flame-retardant technology, applied in textiles and papermaking, fiber treatment, non-woven fabrics, etc., to achieve the effects of weight reduction, elastic sound absorption performance, and material weight reduction

Active Publication Date: 2011-12-14
镇江立达纤维工业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-strength, high-toughness and high-flame-resistance composite heat-insulating material for automobile engine compartments with high flame-retardance to overc

Method used

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  • A kind of high flame retardant felt for automobile engine compartment and its manufacturing method
  • A kind of high flame retardant felt for automobile engine compartment and its manufacturing method

Examples

Experimental program
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Effect test

Example Embodiment

[0033] Example 1

[0034] First prepare the powdered ammonium polyphosphate flame retardant and water into an aqueous solution with a concentration of 30%, and evenly spray the aqueous solution on 35.8kg of open cotton to make the open cotton sufficiently moist, cover it well and place it for 24 hours before Let it dry completely in the natural state and open evenly. When opening, add 8.2 kg of recycled glass fiber with a length of 20mm to prepare a mixture of recycled glass fiber and flame-retardant opening cotton.

[0035] Then, 0.78㎏ nano-SiO 2 The powder is mixed with 41.2kg of phenolic resin through special equipment to make nano-SiO 2 The powder is evenly dispersed into the phenolic resin material and formulated into nano-SiO 2 The mixture of powder and phenolic resin is placed in a powder mixer, and then 13 kg of ammonium polyphosphate flame retardant is added and mixed evenly.

[0036] Finally, the mixture of recycled glass fiber and flame-retardant opening cotto...

Example Embodiment

[0037] Example 2

[0038] First prepare the powdered ammonium polyphosphate flame retardant and water into an aqueous solution with a concentration of 32%, and evenly spray the aqueous solution on 76.8 kg of opening cotton to make the opening cotton sufficiently moist. Let it dry completely in the natural state and open evenly. When opening, 19.2 kg of recycled glass fiber with a length of 40mm is added to prepare a mixture of recycled glass fiber and flame-retardant opening cotton.

[0039] Then, 1.46kg of nano-SiO 2 The powder is mixed with 76.54kg of phenolic resin through special equipment to make nano-SiO 2 The powder is evenly dispersed into the phenolic resin material and formulated into nano-SiO 2 The mixture of powder and phenolic resin is placed in a powder mixer, and then 26 kg of ammonium polyphosphate flame retardant is added and mixed evenly.

[0040] Finally, the mixture of recycled glass fiber and flame-retardant opening cotton is put into the bale opener...

Example Embodiment

[0041] Example 3

[0042] First prepare the powdered ammonium polyphosphate flame retardant and water into an aqueous solution with a concentration of 35%, and evenly spray the aqueous solution on 32.6kg of opening cotton to make the opening cotton sufficiently moist, cover it well and place it for 24 hours before Let it dry completely in the natural state and open evenly. When opening, add 9.8 kg of recycled glass fiber with a length of 60mm to prepare a mixture of recycled glass fiber and flame-retardant opening cotton.

[0043] Then, 0.82㎏ nano-SiO 2 The powder is mixed with 40.18kg of phenolic resin through special equipment to make nano-SiO 2 The powder is evenly dispersed into the phenolic resin material and formulated into nano-SiO 2 The mixture of powder and phenolic resin is placed in a powder mixer, and then 14 kg of ammonium polyphosphate flame retardant is added and mixed evenly.

[0044] Finally, the mixture of recycled glass fiber and flame-retardant openin...

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Abstract

The invention discloses a highly flame-retardant felt used for automobile engine compartments and a manufacturing method thereof. The highly flame-retardant felt is a mixture of the following materials (accounting for the total weights of raw materials): 44 to 48 percent of blend of regenerated glass fibers and flame-retardant loosened cotton, 39 to 42 percent of blend of nano-sized SiO2 powders and phenolic resin, and 13 to 14 percent of a flame retardant agent. The method comprises the following steps: firstly, preparing an aqueous solution (30 to 35% concentration) of powdery polyammonium phosphate which is used as flame retardant agent and water, uniformly spraying the solution to loosened cotton, and loosening while adding regenerated glass fibers; then, mixing nano-sized SiO2 powders with phenolic resin such that nano-sized SiO2 powders are uniformly dispersed in phenolic resin, and adding the flame retardant agent and thoroughly mixing; and finally, simultaneously feeding the two powdery mixtures to an air-laid netting machine by use of a distributor. By virtue of the process of phenolic resin modification with nanopowders and the special process of fiber flame-retardant treatment, and the composition of flame-retardant loosened cotton, regenerated glass fibers and modified phenolic resin, in addition with an appropriate proportion of flame retardant agent, the best results of being both economic and flame-retardant and satisfying the need for performance improvement are achieved.

Description

technical field [0001] The invention relates to a polymer chemical material, in particular to a special high flame-retardant felt for an automobile engine compartment and a method for making the felt. Background technique [0002] At present, the commonly used felts for automobile engine compartments are mainly made of glass wool, phenolic resin waste spinning cotton or polyurethane foam. These materials have their own advantages and disadvantages. It has good sound absorption and flame retardancy, but it pollutes the environment and easily causes skin allergies. Phenolic resin waste spun cotton is composed of phenolic resin and open cotton. It is produced by air-laid method. It is the application of regeneration technology. It has good rigidity and formability, but the disadvantage is that it is heavier than glass wool, and its flame retardancy and toughness are also poor. . Polyurethane foam is composed of polyether polyol and other polyols, catalysts, foaming agents and...

Claims

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Application Information

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IPC IPC(8): D04H1/42D04H1/54D06M11/72D06M11/79D06M15/41
Inventor 施群孙岳明赵文兵李强齐齐
Owner 镇江立达纤维工业有限责任公司
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