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Flame-retardant porous sheets, moldings thereof, and flame-retardant acoustical absorbents for automobiles

A fiber sheet and sound-absorbing material technology, which is applied in fiber treatment, superstructure sub-assembly, textiles and papermaking, etc., can solve the problems of weather resistance degradation, flame retardant detachment, hindering sound absorption, etc., and achieve improved mold release , Adhesion improvement, rigidity improvement effect

Active Publication Date: 2008-10-22
NAGOYA OIL CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the fiber containing the above-mentioned flame retardant is very expensive, and the strength and weather resistance of the fiber are deteriorated due to the flame retardant. When the flame retardant is contained in the fiber sheet, the fiber sheet Air permeability is hindered by the flame retardant, which adversely affects sound absorption, or when the resin solution is impregnated with the flame retardant, the flame retardant may detach

Method used

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  • Flame-retardant porous sheets, moldings thereof, and flame-retardant acoustical absorbents for automobiles
  • Flame-retardant porous sheets, moldings thereof, and flame-retardant acoustical absorbents for automobiles
  • Flame-retardant porous sheets, moldings thereof, and flame-retardant acoustical absorbents for automobiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] The weight per unit area composed of polyester fiber and made by spunbond method is 40g / m 2 In the non-woven fabric, an impregnating liquid is immersed in the above-mentioned non-woven fabric with a solid content of 50% by mass of the unit area weight. The impregnating liquid is added and mixed with 70 parts by mass of sulfomethylated phenol- Alkyl resorcinol-formaldehyde initial condensate (50% by mass solid content) and 30 parts by mass of melamine resin coated with ammonium polyphosphate flame retardant capsule (50% by mass aqueous dispersion, particle size: 15-20μm), dried at a temperature of 130-140°C for 5 minutes, and pre-cured the above-mentioned sulfomethylated phenol-alkylresorcinol-formaldehyde initial condensate. The flame retardant non-woven fabric fiber sheet with the flame retardant capsule bonded to the woven fabric. The obtained non-woven fiber sheet is used as the skin material, and as the base material, 15% by mass of phenol resin is used as the base mate...

Embodiment 2

[0084] Using 60% by mass polyester fiber (fineness: 6dtex, fiber length: 25mm), 15% by mass low-melting polyester fiber (fineness: 12dtex, fiber length: 35mm) and 25% by mass kenaf fiber (fiber diameter : 0.1~0.3mm, fiber length: 35mm) composed of fiber web, and obtained sheet fiber by needle punching method (weight per unit area: 600g / m 2 , Thickness: 10mm). Then, to 80 parts by mass of the initial condensate of sulfomethylated phenol-resorcinol-formaldehyde (50% by mass solid content) was added and mixed with 20 parts by mass of a melamine resin coated ammonium polyphosphate barrier. Burning agent capsules (particle size: 10-15 μm) to prepare an immersion liquid. The impregnating liquid is used to impregnate the sheeting fiber with a solid content of 50% by mass of the unit area weight, and drying at a temperature of 100 to 130° C. for 5 minutes to pre-curing the sheeting fiber to produce Obtain flame-retardant fiber sheet. Then, the pre-cured fiber sheet was hot-pressed and pre...

Embodiment 3

[0095] The weight per unit area made of polyester fiber and made by spunbond method is 40g / m 2In the non-woven fabric, 3 parts by mass of fluorine-based water and oil repellent will be added to 40 parts by mass of sulfomethylated phenol-alkylresorcinol-formaldehyde initial condensate (60% by mass solid content) (40% by mass solid content), 1 part by mass of carbon black dispersion (30% by mass solid content), 2 parts by mass of phosphorus and nitrogen-containing flame retardant (40% by mass solid content) and 54 parts by mass of water The prepared impregnating liquid is immersed in the above non-woven fabric with a solid content of 50% by weight of the unit area weight, and then added to 80 parts by mass of water mixed with 20 parts by mass as a flame retardant capsule The dispersion liquid of "Ek リツト AP462" (trade name: manufactured by Clarion Technology Co., Ltd.) is sprayed on the surface of the non-woven fabric coated with the above-mentioned impregnating liquid at a solid con...

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Abstract

The invention aims at providing fibrous sheets and foamed synthetic resin sheets which are rich in flame retardance, moldings thereof, and flame-retardant acoustical absorbents for automobiles made by using the moldings, and provides flame-retardant porous sheets (such as flame-retardant fibrous sheets and flame-retardant foamed synthetic resin sheets) which bear flame retardant capsules adhering to the fibers or the foamed synthetic resins. When the flame retardant capsules are exposed to high temperature, the synthetic resin films of the capsules are broken and the flame retardant is thereby exposed to impart self-extinguishing properties to the fibrous sheet or the foamed synthetic resin sheet. Moldings of the flame-retardant porous sheets exhibit high flame retardance and retain the air permeability inherent in the fibrous sheets or the foamed synthetic resin sheets, thus being useful as flame-retardant acoustical absorbents for automobiles or buildings.

Description

Technical field [0001] The present invention relates to a flame-retardant fiber sheet, a flame-retardant synthetic resin foam sheet and a molded product thereof used in flame-retardant sound-absorbing materials for automobiles or buildings, and a flame-retardant sound-absorbing material for automobiles. Background technique [0002] In the past, as such a fiber sheet, a needle-punched non-woven fabric or needle-punched felt obtained by entangling a fiber mesh by a needle-punching method, and a resin non-woven fabric obtained by bonding the fiber mesh by a synthetic resin Cloth, resin felt, fiber woven fabric, etc. (for example, refer to Patent Documents 1 and 2). [0003] Patent Document 1: Japanese Patent Application Publication No. 11-61616 [0004] Patent Document 2: JP 8-39596 No. [0005] Such fiber sheets are required to have sound absorption and heat insulation properties as well as flame retardancy. In the past, in order to impart flame retardancy to the fiber sheet, tetr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/18B60R13/02D06M11/72D06M13/292D06M15/41D06M15/423D06M23/12
Inventor 小川正则平野司芳渡边刚
Owner NAGOYA OIL CHEM CO LTD
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