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Enhanced permeable medium

A diversion medium and enhanced technology, applied in textiles and papermaking, layered products, knitting, etc., can solve the problems of three-dimensional fabrics that are not suitable for the manufacture and processing of thin composite products, and achieve the purpose of overcoming wasteful shortcomings, improving uniformity, The effect of overcoming poor adhesive performance

Active Publication Date: 2009-12-16
NO 53 RES INST OF CHINA NORTH IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the three-dimensional fabric is not suitable for the manufacture and processing of thin composite products

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1200tex alkali-resistant untwisted glass fiber roving and KEVLAR 49 aramid fiber yarn treated with a starch-based sizing agent and a silane coupling agent mixed sizing agent, mixed at a weight ratio of 1:1, bundled into a 0.2mm thick, 3mm wide Fiber bundles are used as yarn bundles for even layers; T-1000 glass fiber reinforced alumina fiber yarn and T300 (6K) carbon fiber yarn treated with starch-based sizing agent are mixed at a weight ratio of 2:1, and the thickness of the bundle is 0.4mm , The yarn bundle with a width of 1.5mm is used as the yarn bundle for odd layers; the yarn bundle obtained by 0.02mm×0.05mm is used as the yarn bundle for weaving by gathering the high modulus PBO fiber yarn of 1090dtex treated with a silane coupling agent.

[0036] Lay each layer of yarn bundles with the distance between odd and even layers of yarn bundles being 3mm, among which, there are 3 layers of odd layers and 2 layers of even layers, the angle between odd and even layers of ...

Embodiment 2

[0039]1000tex alkali-free untwisted glass fiber roving and T300 (3K) carbon fiber yarn treated with starch-based sizing agent mixed with sizing agent were mixed at a weight ratio of 2:1, and bundled into a fiber bundle with a thickness of 0.05mm and a width of 0.1mm as the first Yarn bundles for one layer; iron-chromium-aluminum alloy fiber yarns with a diameter of 12 μm and a core number of 1700 f and KEVLAR 49 aramid fiber yarns treated with a silane coupling agent, mixed at a weight ratio of 1:2, and bundled so that the thickness and width are both The yarn bundle of 0.1mm is used as the yarn bundle for the second layer; the KEVLAR 49 aramid fiber yarn treated with the silane coupling agent is bundled into a yarn bundle with a thickness of 0.08mm and a width of 0.1mm as the yarn bundle for the third layer; 45 polyester fiber yarns and 150D nylon fiber yarns treated with a silane coupling agent were mixed in a weight ratio of 1:1, and bundled to obtain a yarn bundle of 0.01 m...

Embodiment 3

[0043] Use 2000tex E-glass fiber yarn treated with starch-based sizing agent mixed with sizing agent, bundled into fiber yarn bundles with a thickness of 0.5mm and a width of 3mm as yarn bundles for even layers; KEVLAR 49 aramid fiber treated with a silane coupling agent The fiber yarn and the 400D nylon fiber yarn are mixed in a weight ratio of 3:1, and the yarn bundles with a thickness of 1 mm and a width of 3 mm are used as yarn bundles for odd layers; 0.1 mm× A yarn bundle of 0.5 mm was used as a yarn bundle for weaving.

[0044] The yarn bundles of the odd and even layers are placed at a distance of 5mm. Among them, 2 layers of the odd layer are used as the upper and lower layers, and 1 layer of the even layer is used as the center layer. The angle between the yarn bundles of the odd and even layers is 70°. The odd-numbered yarn bundles are flushed separately, and the yarn bundles for weaving are stitched along the direction parallel to the even-numbered yarn bundles to o...

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Abstract

The invention belongs to the technical field of composite molding process, relating to an enhanced permeable medium. The enhanced permeable medium is laid by odd layers of non-woven parallel yarns at a certain angle and is weaved by yarns used for weaving in low weaving density to form a three dimensional fabric with sparse weaving points; vast penetrating gaps or grooves are reserved in the fabric to provide channels for air and resin flow, so that the fabric has better permeably property of resin. The enhanced permeably medium of the invention can effectively increase flow rates of resins, realize sound immersion of fiber fabrics in resins, obviously increase reliability of pouring technique and improve uniformity of products. The products with smooth surfaces are directly obtained when using the medium without changing die structure, thus saving time and labor and being economical and efficient. The enhanced permeably medium of the invention has strong designability, and permeable media with demand structures are obtained by designing structural parameters such as material quality, yarns and angles, etc. according to the characteristics of the composite.

Description

1. Technical field [0001] The invention belongs to the technical field of composite material forming technology, and relates to a structure of a reinforced diversion medium. 2. Background technology [0002] Vacuum-assisted forming technology of composite materials is a low-cost liquid forming technology, which uses vacuum negative pressure to realize impregnation of resin in fibers and fabrics, and solidifies and shapes under vacuum pressure load. The current relatively advanced vacuum-assisted molding technology is the Seemann composite resin infiltration molding (SCRIMP) technology, which has the characteristics of simple molding equipment, low manufacturing cost, low product void ratio, and similar performance of the molded product to the autoclave process. It is suitable for the manufacture of large structures, especially for the manufacture of large-size, large-thickness, and special-shaped structural parts. Developed countries such as the United States and the United ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): B32B5/08B32B5/12B32B5/26D04B21/14B29C70/44B29C70/48B29C70/54
Inventor 郑威刘丽慧袁秀梅王炤亮王小兵高泉喜孔令美齐燕燕
Owner NO 53 RES INST OF CHINA NORTH IND GRP
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