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A kind of friction material and preparation method thereof

A friction material and mesh cloth technology, applied in the field of materials, can solve problems such as material waste, and achieve the effects of protecting the environment, not easy to delaminate, and increasing shear strength

Active Publication Date: 2022-04-01
TALFRI BRAKES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, delamination will occur in the production process of the existing laminated friction materials; and because the laminated cloth layer must be consistent with the product size or machined after being produced into a large plate, no matter which method will cause a lot of material waste

Method used

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  • A kind of friction material and preparation method thereof
  • A kind of friction material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0032] This embodiment provides a method for preparing a friction material, which includes the following steps:

[0033] (1) According to the weight ratio of copper wire 10%, the weight ratio of short cotton wire 20%, the weight ratio of glass fiber 65% and the weight ratio of viscose 5%, it is prepared into core-spun yarn;

[0034] (2) Using a knitting machine to weave the core-spun yarn to obtain a grid cloth; wherein the warp density is 15 warp threads per 10 cm; the weft thread density is 15 warp threads per 10 cm;

[0035] (3) The grid cloth is immersed in phenolic resin with a solid content of 85%, o Dry under C condition for 5 hours, the weight of the grid cloth is doubled, and the resin grid cloth is obtained after completion;

[0036] (4) Cut the resin grid cloth to a size of about 20mm x 50mm and put it into the mold, at 120 o C. Pressing under the condition of 12MPa, exhausting 3 times during the period, the total time of holding the pressure is 10min, and the sem...

Embodiment 2

[0039] This embodiment provides a method for preparing a friction material, which includes the following steps:

[0040] (1) According to the weight ratio of copper wire 12%, the weight ratio of short cotton wire 24%, the weight ratio of glass fiber 60% and the weight ratio of viscose 6%, it is prepared into core-spun yarn;

[0041] (2) Using a knitting machine to weave the core-spun yarn to obtain a grid cloth; wherein the warp density is 30 warp threads per 10 cm; the weft thread density is 30 warp threads per 10 cm;

[0042] (3) Immerse the grid cloth in epoxy resin with a solid content of 85%, o Dry under C condition for 2 hours, the weight of the mesh cloth after impregnation increases by 80%, and the resin mesh cloth is obtained after completion;

[0043] (4) Cut the resin grid cloth to a size of about 25mm×150mm and put it into the mold, at 170 o C. Press under 23MPa conditions, exhaust 10 times during the period, and the total pressure holding time is 12min to obtain...

Embodiment 3

[0046] This embodiment provides a method for preparing a friction material, which includes the following steps:

[0047] (1) The weight of copper wire accounts for 8%, the weight of short cotton thread accounts for 15%, the weight of glass fiber accounts for 73% and the weight of viscose accounts for 4%, and the core-spun yarn is prepared;

[0048] (2) Using a knitting machine to knit the core-spun yarn to obtain a grid cloth; wherein the warp density is 23 warp threads per 10 cm; the weft thread density is 23 warp threads per 10 cm;

[0049] (3) Immerse the mesh cloth in epoxy resin with a solid content of 60%, and o Drying under C condition for 3 hours, the weight of the grid cloth increases by 60%, and the resin grid cloth is obtained after completion;

[0050] (4) Cut the resin grid cloth to a size of about 40mm×40mm and put it into the mold, at 150 o C. Pressing under the condition of 18MPa, exhausting 15 times during the period, the total time of holding the pressure is ...

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Abstract

The invention relates to a friction material and a preparation method thereof. The method comprises the following steps: bonding metal wires, short cotton threads, and reinforcing fibers to prepare core-spun yarns; weaving the core-spun yarns to obtain grid cloth; immersing the grid cloth in resin, mixing and drying After the completion, the resin mesh cloth is obtained; the resin mesh cloth is chopped and pressed in a mold to obtain a semi-finished product; the semi-finished product is continuously solidified and processed to obtain the finished friction material. The production method uses grid cloth impregnated with resin. The grid cloth is easy to impregnate and the impregnation is relatively uniform. The grid cloth is cut into rags by a rag machine and formed by hot pressing. The rags are staggered inside the material to form a compact structure. The structure increases the shear strength of the material and is not easy to delaminate. At the same time, since the mesh cloth is cut into rags and then hot-pressed, there will be no waste of materials, and it will also greatly reduce the generation of garbage and protect the environment.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a friction material and a preparation method thereof. Background technique [0002] Friction material is a key part of various mechanical braking and transmission, and is indispensable in various machinery such as automobiles, motorcycles, ships, aircraft, construction machinery, transportation machinery, chemical machinery, mining machinery, petroleum machinery, and engineering machinery. Friction materials are key safety accessories in their application fields. Although they account for a small proportion of the cost of the host, their functional status is very important. In addition to meeting the requirements of practical applications, friction materials with excellent performance also require materials to be easy to produce without waste, and reduce production costs to facilitate the popularization of friction materials. [0003] However, delamination will occur in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/14F16D69/02
CPCC09K3/14F16D69/028F16D2200/0004F16D2200/0034F16D2200/0056F16D2200/006F16D2200/0086
Inventor 曾立宏杨正茂周继煜
Owner TALFRI BRAKES