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Fabric with low friction coefficient and application thereof

A technology with low friction coefficient and sliding friction coefficient, which is used in fabrics, textiles, textiles and papermaking, etc., can solve the problems of increasing process difficulty, shortening service life, easy to be worn through, etc., to achieve good wear resistance and simple process. Effect

Active Publication Date: 2014-02-12
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual use process, due to the poor wear resistance of polytetrafluoroethylene resin, the wear of the sliding bearing is relatively serious, which greatly shortens its service life
Especially under high-load operation, the surface self-lubricating wear-resistant plastic layer (polytetrafluoroethylene resin layer) is easily worn through, causing the traditional bearing or shaft to break, and in severe cases, even threatening to the safety of workers
[0003] Disclosed a kind of self-lubricating fabric thin-layer composite material and its preparation method in Chinese published patent CN 1259599A, this self-lubricating fabric thin-layer composite material is a fiber interwoven fabric formed by weaving a kind of PTFE fiber and other fibers and wear-resistant Although it can play a role in reducing friction and wear, the invention uses wear-resistant impregnating materials to form an impregnating solution, which is then sprayed onto the surface of the interwoven fabric. The PTFE powder and novolac epoxy resin in the impregnating solution play a role in reducing friction and wear. Lubrication, this method not only increases the difficulty of the process and increases the cost, but also the PTFE resin layer is used as a liner fabric in self-lubricating bearings, and its wear resistance does not have durability and stability
[0004] Another example is the Chinese published patent CN102145556A which discloses a high temperature resistant metal-fabric / resin self-lubricating bearing composite material and its preparation method. Resin composite material, although the invention realizes the excellent tribological properties of the bearing material and the reliability of use at high temperature, the manufacturing process of the composite material is complicated and the cost is high. Will affect the softness of blended fabrics

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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  • Fabric with low friction coefficient and application thereof
  • Fabric with low friction coefficient and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The warp yarn adopts polytetrafluoroethylene untwisted filaments with a denier of 440dtex, the number of single filaments is 60, and the friction coefficient between silk and silk is 0.065. The weft yarn adopts a denier of 470dtex, the number of single filaments is 72, and the tensile strength is 39.8 N, the nylon 66 full-drawn silk that elongation at break is 23.3%, is woven by rapier loom, makes the plain weave fabric that warp density is 62 / inch, and weft density is 62 / inch. Wherein, the polytetrafluoroethylene weave points account for 50% of the total weave points of the fabric as the friction surface, and the polytetrafluoroethylene weave points account for 50% on the other side of the fabric, which is used as the bonding surface. And the prepared fabric is placed under the conditions of temperature 20±2°C and humidity 65±4% for humidity conditioning treatment. The properties of the fabric were evaluated and are shown in Table 1.

Embodiment 2

[0052] The warp yarn adopts polytetrafluoroethylene untwisted filaments with a denier of 440dtex, the number of single filaments is 60, and the friction coefficient between filaments is 0.065. , weaving by rapier loom to obtain a 3 / 1 warp twill fabric with a warp density of 90 threads / inch and a weft thread density of 120 threads / inch, wherein the polytetrafluoroethylene weave points account for 75% of the total weave points of the above-mentioned fabric One side of the fabric is used as the friction surface, and the polytetrafluoroethylene tissue points account for 25% on the other side of the fabric, which is used as the bonding surface. And the prepared fabric is placed under the conditions of temperature 20±2°C and humidity 65±4% for humidity conditioning treatment. The properties of the fabric were evaluated and are shown in Table 1.

Embodiment 3

[0054] The warp yarn adopts polytetrafluoroethylene untwisted filaments with a denier of 890dtex, the number of single filaments is 120, and the friction coefficient between silk and silk is 0.071; the weft yarn adopts a denier of 470dtex, the number of single filaments is 136, and the tensile strength is 40.9 N. Nylon 66 full-drawn yarn with an elongation at break of 22.8%, is woven by a rapier loom to obtain a 2 / 1 warp-face twill fabric with a warp density of 60 threads / inch and a weft density of 90 threads / inch , wherein the polytetrafluoroethylene weave points account for 66.7% of the total weave points of the above fabric as the friction surface, and the polytetrafluoroethylene weave points account for 33.3% on the other side of the fabric, which is used as the bonding surface. And the prepared fabric is placed under the conditions of temperature 20±2°C and humidity 65±4% for humidity conditioning treatment. The properties of the fabric were evaluated and are shown in Tab...

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 discloses a fabric with low friction coefficient and an application thereof. The fabric is interweaved by warp yarns and weft yarns and is a woven fabric interweaved by polytetrafluoroethylene fiber and other fibers; the fineness of the polytetrafluoroethylene fiber as the warp yarns or the weft yarns is 50-1400dtex; the polytetrafluoroethylene fiber is polytetrafluoroethylene twistless filament. The fabric with low friction coefficient has the characteristics of high self-lubricating performance, good wearing resistance and simple process and is applied in mechanical motion parts.

Description

technical field [0001] The invention relates to a fabric with low friction coefficient and its application. Background technique [0002] Traditional sliding bearings are generally made of metal materials, and this type of bearing is restricted in some occasions, such as underwater operations. Since lubricating oil is added to traditional bearings, in order to prevent oil leakage, oil dripping, etc., the application of traditional bearings in occasions where lubricating oil cannot be used is greatly limited. Therefore, it is necessary to develop an oil-free lubricated bearing. With the development of technology, people have developed a kind of pure polytetrafluoroethylene resin as the pressing surface, which is used in oil-free lubricating bearings. However, in actual use, due to the poor wear resistance of polytetrafluoroethylene resin, the wear of the sliding bearing is relatively serious, which greatly shortens its service life. Especially under high-load operation, th...

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): D03D15/00D03D13/00D03D15/217D03D15/283D03D15/58
Inventor 张尤娟杨丽丽
Owner TORAY IND INC
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