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Flame-retardant sheet and formed article therefrom

A fiber sheet, flame retardant technology, applied in the field of flame retardant fiber sheet and its molded products, can solve the problems of flame retardant toxicity, insufficient flame retardancy of fiber sheet, etc., and achieve high flame retardancy Effect

Inactive Publication Date: 2006-10-18
NAGOYA OIL CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, even if the above-mentioned flame retardant is used, the flame retardancy of the fiber sheet is not sufficient, and there is also a problem that the flame retardant generates toxicity.

Method used

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  • Flame-retardant sheet and formed article therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] A fiber web composed of 80 mass% polyester fibers (denier: 12dtex, fiber length: 52mm) and 20 mass% low-melting polyester fibers (softening point: 110°C, denier: 8dtex, fiber length: 54mm) , and made into a sheet of fiber by needle punching (weight per unit area: 500g / m 2 , thickness: 15mm). 20 parts by mass of expanded graphite (expansion start temperature: 300° C. to 320° C., expansion ratio: 100 times) was added and mixed to 80 parts by mass of phenol-formaldehyde initial condensate (50% by mass solid content) to prepare an impregnating solution. The viscosity of this immersion liquid is 100 mPa·s. Using this impregnating liquid, impregnate it into the above-mentioned sheet-like fibers so that the solid content becomes 50% by mass, and then dry the sheet at a temperature of 100 to 120°C for 3 minutes while pumping air in a drying chamber to precure the sheet. Fiber sheet is made by materializing fiber. The precured fiber sheet was thermocompressed at a temperature...

Embodiment 2

[0098] Add and mix 60 mass parts of phenol-formaldehyde initial condensation products (50% mass solid content), 20 mass parts of polyvinyl alcohol (10 mass parts solid content, degree of saponification: 98.5mol%) and 20 mass parts of expanded graphite (expanded Start temperature: 300°C to 320°C, expansion rate: 100 times) to prepare the impregnation solution. The viscosity of this dipping solution is 250 mPa·s. Except using this impregnating liquid instead of the impregnating liquid in Example 1, the compression molding was carried out in the same manner as in Example 1 to obtain a 10 mm thick molded article, and the ventilation resistance of this molded article was 4.1 kPa·s / m.

Embodiment 3

[0100] Add and mix 60 mass parts of phenol-formaldehyde initial condensate (50% mass solid content), 15 mass parts polyvinyl alcohol (10 mass mass solid content, degree of saponification: 98.5mol%), 4 mass parts of polyvinyl alcohol as an alkali-soluble The post-crosslinked copolymer latex of ethyl acrylate and methacrylic acid of the adhesive is PRIMAL, ASE-60 (manufactured by Rohm and Haas Company, trade name), 20 parts by mass of expanded graphite (expansion start temperature: 300° C. to 320° C. , Expansion rate: 130 times) and 1 mass part of 27% by mass ammonia water to prepare an immersion solution. The viscosity of this immersion liquid is 950 mPa·s. Except using this impregnating liquid instead of the impregnating liquid in Example 1, press molding was carried out in the same manner as in Example 1 to obtain a 10 mm thick molded article, and the air resistance of this molded article was 4.6 kPa·s / m.

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Abstract

An object of the present invention is to provide a fiber sheet excellent in flame retardancy and a molded article thereof. Provided is a flame-retardant fiber sheet containing expanded graphite in fibers. The expanded graphite expands when exposed to high temperatures, thereby imparting self-extinguishing properties to the fibrous sheet. The molded product of the flame-retardant fiber sheet has high flame retardancy and is harmless to humans and animals, so it can be used, for example, as interior materials for automobiles and buildings.

Description

technical field [0001] The present invention relates to a flame-retardant fiber sheet and its molding used for interior materials of automobiles and buildings. Background technique [0002] In the past, as such a fiber sheet, a needle-punched non-woven fabric or a needle-punched felt obtained by intertwining a fiber web by a needle punching method, and a resin non-woven fabric obtained by bonding a fiber web by a synthetic resin are provided. Cloth, resin felt, braided fabric of fibers, etc. (see, for example, JP-A-11-61616 and JP-A-8-39596). [0003] Such fibers are required to have flame retardancy in addition to soundproofing and heat insulating properties. Conventionally, flame retardants such as tetrachlorophthalic acid, tetrabromophthalic acid, tetrabromobisphenol A, antimony trioxide, and chlorinated paraffin are contained in the fiber sheet in order to impart flame retardancy to the fiber sheet. [0004] However, even if the above-mentioned flame retardant is used,...

Claims

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Application Information

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IPC IPC(8): D06M11/74B32B27/12D06M11/79D06M15/41
Inventor 小川正则伊藤邦矩平野司芳
Owner NAGOYA OIL CHEM CO LTD
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