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Heat-insulating carbon fiber soft felt and preparation method thereof

A carbon fiber, pitch-based carbon fiber technology, applied to the field of new materials, can solve the problems of carbon fiber application, high cost, low self-sufficiency rate, etc., and achieve the effect of uniform performance in all directions

Active Publication Date: 2018-11-09
江苏庞捷实业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, because the current domestic carbon fiber industry is still in a weak stage, the self-sufficiency rate is very small, most of them depend on imports, and borrowing is relatively expensive, so the existing carbon fiber is used in the fields of automobiles, aerospace, subways, ships, etc. The thermal insulation soft felt with noise and other effects mainly uses polyacrylonitrile pre-oxidized silk fiber, and carbon fiber is not really applied to the above fields. improve

Method used

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  • Heat-insulating carbon fiber soft felt and preparation method thereof
  • Heat-insulating carbon fiber soft felt and preparation method thereof

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preparation example Construction

[0035] In one embodiment, the preparation method of the hollow polyethylene terephthalate fiber comprises the following steps:

[0036] Pre-crystallize PET polyester chips with a weight average molecular weight of 22000 at 145°C for 30 minutes, then dry at 135°C for 2.5 hours, then transport them to a twin-screw extruder for melting at 270-285°C, and use a metering pump to obtain the melt Metered and pressed into the spinning assembly, extruded with a "C" type spinneret, the obtained filaments are cooled and formed by a ring blower, the pressure is 480Pa, the wind temperature is 35°C, the wind speed is 0.18-0.20m / s, and then relaxed heat setting, drying, and winding to obtain the hollow polyethylene terephthalate fiber.

[0037] The preparation method of described special-shaped polyethylene terephthalate fiber comprises the steps:

[0038] PET polyester chips with a weight-average molecular weight of 22,000 were pre-crystallized by thermal convection at 145°C for 30 minutes,...

Embodiment 1

[0056] Embodiment 1 provides a carbon fiber thermal insulation soft felt, the carbon fiber thermal insulation soft felt includes a surface layer and a composite cotton mesh layer; the thickness of the surface layer and the thickness ratio of the composite cotton mesh layer are 1:2.2; the composite cotton mesh layer The raw materials for the preparation of the layer consisted of 20 parts by weight of polyester fiber and 38 parts by weight of carbon fiber.

[0057] The surface layer is prepared from a zigzag folded fiber web; the folding angle of the zigzag folded fiber web is 45 degrees; the polyester fiber is polyethylene terephthalate fiber; the polyethylene terephthalate fiber The ethylene formate fiber is composed of hollow polyethylene terephthalate fiber and special-shaped polyethylene terephthalate fiber, and its weight ratio is 1:3.2; the carbon fiber is pitch-based carbon fiber; the pitch-based carbon fiber The degree of crimp is 6%; The preparation method of described...

Embodiment 2

[0067] Embodiment 2 provides a carbon fiber thermal insulation soft felt, the carbon fiber thermal insulation soft felt includes a surface layer and a composite cotton mesh layer; the thickness of the surface layer and the thickness ratio of the composite cotton mesh layer are 1:1.8; the composite cotton mesh layer The raw materials for the preparation of the layer consisted of 15 parts by weight of polyester fiber and 30 parts by weight of carbon fiber.

[0068] The surface layer is prepared from a zigzag folded fiber web; the folding angle of the zigzag folded fiber web is 30 degrees; the polyester fiber is polyethylene terephthalate fiber; the polyethylene terephthalate fiber The ethylene formate fiber is composed of hollow polyethylene terephthalate fiber and special-shaped polyethylene terephthalate fiber, and its weight ratio is 1:2.5; the carbon fiber is pitch-based carbon fiber; the pitch-based carbon fiber The degree of crimp is 4%; The preparation method of described...

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Abstract

The invention specifically relates to a heat-insulating carbon fiber soft felt and a preparation method thereof, belonging to the field of novel materials. The heat-insulating carbon fiber soft felt comprises a surface layer and a composite web layer, wherein a ratio of the thickness of the surface layer to the thickness of the composite web layer is 1: (1.8-3), and the composite web layer is prepared from 15 to 25 parts by weight of polyester fibers and 30 to 45 parts by weight of carbon fibers.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a carbon fiber thermal insulation soft felt and a preparation method thereof. Background technique [0002] Carbon fiber is mainly a special fiber composed of carbon elements, and its content varies with different types, generally more than 90%. Carbon fiber has the characteristics of general carbon materials, such as high temperature resistance, friction resistance, electrical conductivity, heat conduction and corrosion resistance, etc., but different from general carbon materials, its shape has significant anisotropy, softness, and can be processed into various A fabric that exhibits high strength along the line as the axis. The specific gravity of carbon fiber is small, so it has high specific strength. At present, polyacrylonitrile-based carbon fiber (PAN) and pitch-based carbon fiber (Pitch) are mainly developed in various countries in the world. PAN-based carbon fiber is the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B27/02B32B27/12B32B27/36B32B37/06B32B37/10
CPCB32B5/028B32B5/08B32B5/26B32B37/06B32B37/10B32B2250/20B32B2262/0284B32B2262/106B32B2262/14B32B2307/10B32B2307/304B32B2307/3065B32B2605/08B32B2605/10B32B2605/12B32B2605/18
Inventor 马国来
Owner 江苏庞捷实业发展有限公司
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