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High-strength ultrathin polyimide fabric and preparation method thereof

A technology of polyimide and polyimide fiber, which is applied in the direction of fabrics, textiles, dry-cleaning fiber products, etc., can solve the problems that high-performance polyimide ultra-thin fabrics are difficult to realize and fine denier weaving is difficult, etc. Achieve the effects of excellent mechanical properties, excellent flame retardant properties, and good weight reduction effects

Pending Publication Date: 2022-08-05
JIANGSU XIANNUO NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a high-strength ultra-thin polyimide fabric and its preparation method, in order to at least partially solve the difficulty of fine denier weaving of polyimide fibers existing in the prior art. , The problem that the manufacture of high-performance polyimide ultra-thin fabric is difficult to realize

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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  • High-strength ultrathin polyimide fabric and preparation method thereof
  • High-strength ultrathin polyimide fabric and preparation method thereof
  • High-strength ultrathin polyimide fabric and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035]The 55D polyimide fibers with a breaking strength of 20.8cN / dtex were twisted S200 twists / meter. During the warping process, 7wt% concentration of water-based silicone sizing agent MP50E was used on the warp fibers for sizing treatment. The sizing time It is 25s, in which the weft yarn is twisted while sizing, twisting S100 twists / m, using 7wt% concentration of water-based silicone sizing agent MP50E for sizing treatment, and the sizing time is 20s. After the warp yarns are healed, the loom is used for weaving, and the woven fabric is ultrasonically desized. After 4 washings, the first washing adds desizing enzyme. The pulp tanks are equipped with ultrasonic devices, steam drum drying treatment at 100° C., and the winding speed is controlled at 20 m / min to obtain polyimide ultra-thin fabric D.

Embodiment 2

[0037] The 55D polyimide fibers with a breaking strength of 20.8cN / dtex were twisted S200 twists / meter. During the warping process, the warp fibers were sized with a water-based epoxy sizing agent DER WB6001 with a concentration of 8wt%. The sizing time For 40s, the weft yarn is twisted while sizing, twisting Z150 twists / m, using 8wt% concentration of water-based silicone sizing agent MP50E for sizing treatment, and the sizing time is 25s. After the warp yarns are healed, the loom is used for weaving, and the woven fabric is ultrasonically desized. After 4 washings, the first washing adds desizing enzyme. The pulp tanks are equipped with ultrasonic devices, steam drum drying treatment at 100° C., and the winding speed is controlled at 5 m / min to obtain polyimide ultra-thin fabric E.

Embodiment 3

[0039] The 100D polyimide fibers with a breaking strength of 20.8cN / dtex were twisted with S100 twists / meter. During the warping process, 4wt% concentration of water-based silicone sizing agent SH9608-A was used on the warp fibers for sizing treatment. The sizing time is 30s, and the weft yarn is twisted while sizing, twisting S200 twists / m, and using 4wt% concentration of water-based silicone sizing agent SH9608-A for sizing treatment, and the sizing time is 20S. After the warp yarns are healed, the loom is used for weaving, and the woven fabric is ultrasonically desized. After 4 washings, the first washing adds desizing enzyme. The pulp tanks are equipped with ultrasonic devices, steam drum drying treatment at 100° C., and the winding speed is controlled at 10 m / min, so that the polyimide ultra-thin fabric F is obtained.

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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Abstract

The invention provides a high-strength ultrathin polyimide fabric and a preparation method thereof, polyimide fibers adopted by the fabric are polyimide fine denier fibers, the fiber linear density is less than 250D, and the fiber breaking strength is more than 17.5 cN / dtex; the mass per unit area of the high-strength ultrathin polyimide fabric is 30-150g / m < 2 >, the thickness is 100-210 microns, and the warp and weft mechanical properties are greater than 900N / 50mm. Compared with other fibers, under the condition of the same surface density, the fabric is more excellent in mechanical property; under the same mechanical property condition, the fabric can be lighter and thinner, has a good weight reduction effect, and has excellent flame retardance, high and low temperature resistance and ultraviolet resistance.

Description

technical field [0001] The invention relates to a polymer fabric, in particular to a polyimide fabric and a preparation method thereof. Background technique [0002] An indicator of ultra-thin fabrics is a relatively dense fabric prepared from fiber filaments with a fiber linear density (denier) of less than 250D. Conventional ultra-thin fabrics are mainly polyester. In the field of special fibers, fabrics made of fibers above 200D are used. There are very few fabrics made of fibers less than 200D, and high-strength, flame-retardant, ultra-thin special Fabrics are more difficult to prepare. [0003] In fine denier weaving, when fibers of the same linear density are used, the warp and weft density of the fabric increases with the increase of the mass per unit area, and the increase is larger. When the warp and weft density increases, the difficulty of the weaving process will be greatly increased, and higher requirements will be placed on the processing technology of fine d...

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): D03D15/283D03D15/33D03D15/41D01H13/30D03D15/513D03D15/50D03D15/58D06L1/14D06L1/16D06M15/55D06M15/643D06M101/30
CPCD03D15/283D03D15/33D03D15/41D01H13/306D03D15/513D03D15/50D03D15/58D06M15/643D06M15/55D06L1/14D06L1/16D10B2331/14D10B2401/063D10B2401/22D06M2101/30D06M2200/30D06M2200/25Y02P70/62
Inventor 张梦颖曾永要牛鸿庆韩恩林武德珍
Owner JIANGSU XIANNUO NEW MATERIAL TECH
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