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Reinforcing fabric for non-woven heat-resisting filter material and purposes thereof

A filter material and heat-resistant technology, applied in the fields of filtration and separation, chemical instruments and methods, separation methods, etc., can solve the problems of increasing the loss of fiber strength, processing methods without heat setting, and low strength of polytetrafluoroethylene fibers. , to achieve the effect of high dimensional stability

Inactive Publication Date: 2010-07-07
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Patent Publication No. CN1724111 proposes a method for manufacturing a high-temperature filter material with composite fibers as raw material, mainly based on polytetrafluoroethylene fibers and other high-temperature-resistant fibers (which can be glass fibers or polyamide-imide Fiber or polyphenylene sulfide fiber) made of high-temperature filter material, the advantage is to expand the application range of the dust collector and prolong the service life, but the polytetrafluoroethylene fiber has low strength (about 2.0CN / dtex), large elongation and low price Expensive and difficult to promote, and heat-setting processing methods are not used
In fact, heat setting conditions have a great influence on the physical properties of fibers, yarns, and base fabrics. Improper selection of conditions will directly increase the strength loss of fibers and eventually affect the tensile strength of reinforced fabrics, so that high-strength and low-elongation products cannot be produced.

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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  • Reinforcing fabric for non-woven heat-resisting filter material and purposes thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A reinforcing fabric for non-woven heat-resistant filter materials, using polyphenylene sulfide high-strength short fibers (2.2dtex*51mm) Spinning→doubling→twisting process, producing a double-ply yarn with a linear density of 531Denier as a weft yarn, and producing a three-ply yarn with a linear density of 797Denier as a warp yarn. The yarn is then subjected to heat setting treatment (condition: 90°C*25min), warping, weaving and other processes to produce a yarn with a warp density of 33 strands / 2.54cm, a weft density of 17 strands / 2.54cm, and a cover factor of 1155. Reinforced fabric. The results of some physical properties of the reinforced fabric are shown in Table 1 below.

Embodiment 2

[0031] A reinforcing fabric for non-woven heat-resistant filter materials, using polyphenylene sulfide high-strength short fibers (80% content) and polytetrafluoroethylene short fibers (PTFE) (20% content) as raw materials for the reinforcing fabric Through the process of opening→carding→drawing→slubbing→spinning→doubling→twisting, single-ply yarns with a linear density of 760Denier are produced as weft yarns, and double-ply yarns with a linear density of 531Denier are used as warp yarns. towards the yarn. The yarn is then subjected to heat setting treatment (condition: 100°C*35min), warping, weaving and other processes to produce a warp density of 30 threads / 2.54cm, a weft density of 13 threads / 2.54cm, and a cover factor of 1052. Reinforced fabric. The results of some physical properties of the reinforced fabric are shown in Table 1 below.

Embodiment 3

[0033] A reinforcing fabric for non-woven heat-resistant filter materials, which uses polyphenylene sulfide high-strength filament fiber (400Denier-100f) as the raw material of the reinforcing fabric, and the yarn is heat-set (condition: 120°C*30min ), warping, weaving and other processes to produce a reinforced fabric with a warp density of 30 threads / 2.54cm, a weft density of 17 threads / 2.54cm, and a cover factor of 927. The results of some physical properties of the reinforced fabric are shown in Table 1 below.

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Abstract

The invention discloses a reinforcing fabric for non-woven heat-resisting filter material and purposes thereof. The yarns forming the reinforcing fabric are processed through heat setting; the strength of the fiber in the reinforcing fabric is over 3.0CN / dtex and the tensile stretch of the fiber is below 40 percent. The reinforcing fabric of the invention has high strength and good size stability and can prolong the service life of the filter material.

Description

Technical field: [0001] The invention relates to a reinforcing fabric for filter materials, which is a reinforcing fabric for filter materials in the field of filtration such as gas-solid and liquid-solid separation (including the filtration of industrial smoke and dust, the filtration of water treatment, etc.) . Background technique: [0002] In recent years, with the rapid development of industry, industrial pollution has become increasingly serious, which has endangered the natural environment and people's health. Flue gas dust removal is an important part of pollution control, and bag dust removal is an effective method for flue gas control. At present, the country pays more and more attention to environmental protection issues, especially in the "National People's Congress", which is listed as a key problem to be solved. From January 1, 2004, coal-fired boilers in thermal power plants and other industries will implement 50mg / m 3 The emission standard, the limit value...

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): B01D39/08
Inventor 顾立霞
Owner TORAY FIBER RES INST(CHINA) CO LTD
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