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 fib

Method used

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  • Flame-retardant sheet and formed article therefrom

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0095] [Example 1]

[0096] Using a fiber web composed of 80% by mass polyester fiber (fineness: 12dtex, fiber length: 52mm) and 20% by mass low-melting polyester fiber (softening point: 110°C, fineness: 8dtex, fiber length: 54mm) , And made into sheeted fiber by needle punching method (weight per unit area: 500g / m 2 , Thickness: 15mm). To 80 parts by mass of the phenol-formaldehyde initial condensate (50% by mass solid content) was added and mixed 20 parts by mass of expanded graphite (expansion start temperature: 300°C to 320°C, expansion rate: 100 times) to prepare an impregnating liquid. The viscosity of this immersion liquid was 100 mPa·s. Using this dipping liquid, immerse it in the sheeting fiber so that the solid content reaches 50% by mass, and then dry the sheet at a temperature of 100 to 120°C for 3 minutes while exhausting air in the drying chamber to pre-curing the sheet Materialize fibers to obtain fiber sheets. The pre-cured fiber sheet was heat-compressed at a temp...

Example Embodiment

[0097] [Example 2]

[0098] Add and mix 60 parts by mass of phenol-formaldehyde initial condensate (50% by mass solid content), 20 parts by mass of polyvinyl alcohol (10% by mass solid content, saponification degree: 98.5 mol%), and 20 parts by mass of expanded graphite (expanded graphite). Starting temperature: 300 ℃ ~ 320 ℃, expansion rate: 100 times) to prepare the immersion liquid. The viscosity of this immersion liquid was 250 mPa·s. Except that this immersion liquid was used instead of the immersion liquid in Example 1, it was press-molded in the same manner as in Example 1 to obtain a 10 mm thick molded product. The ventilation resistance of the molded product was 4.1 kPa·s / m.

Example Embodiment

[0099] [Example 3]

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