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Frictional gasket for mine hoister and preparation method thereof

A mine hoist and friction pad technology, applied in the field of friction pads, can solve the problem of not being able to meet the use requirements of large mine hoists, and achieve the effects of easy rope grooves, high friction coefficient and good melting resistance

Active Publication Date: 2011-08-03
中实洛阳机械工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The original friction linings on the market can no longer meet the requirements of large mine hoists

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0014] A method for preparing a friction lining for a mine hoist, comprising the steps of:

[0015] Step 1: Take 40-80 parts of powdered nitrile rubber, 20-40 parts of clay, 15-30 parts of activated silica powder, 25-50 parts of nano-silica, 1-2 parts of sulfur, and 5-10 parts of zinc oxide , 2-10 parts of magnesium oxide, 5-15 parts of ferric oxide, 0.5-1 part of antioxidant 4010, 0.5-1 part of antioxidant 264, and 15-30 parts of stearic acid are sent to the mixer for mixing, and the mixing time is 10 -20 minutes, the temperature in the mixer is controlled at 70-80°C, and the mixed powder is ready for use;

[0016] Step 2, take 50-100 parts of phenolic resin by weight and send it to the rubber mixing machine to carry out plasticizing and wrapping roll under the condition of 60-80°C;

[0017] Step 3. Add the powder mixed in step 1 to the rubber mixer and mix with the phenolic resin in step 2. The mixing temperature is 60-80°C and the mixing time is 15-25 minutes, and then add...

Embodiment 1

[0021] A method for preparing a friction lining for a mine hoist, comprising the steps of:

[0022] Step 1: Take 50 parts of powdered nitrile rubber, 30 parts of pottery clay, 20 parts of activated silica micropowder, 25 parts of nano-white carbon black, 2 parts of sulfur, 8 parts of zinc oxide, 2 parts of magnesium oxide, and 8 parts of ferric oxide , 0.5 parts of anti-aging agent 4010, 0.6 parts of anti-aging agent 264, and 20 parts of stearic acid are sent to the mixer for mixing. The mixing time is 10 minutes. The temperature in the mixer is controlled at 70 ° C, and the mixed powder is ready for use;

[0023] Step 2, take 50 parts of phenolic resin in parts by weight and send it to the rubber mixing machine to carry out plasticization and roll wrapping under the condition that the temperature is 60°C;

[0024] Step 3. Add the powder mixed in step 1 to the rubber mixer and mix with the phenolic resin in step 2. The mixing temperature is 70°C, and the mixing time is 20 minu...

Embodiment 2

[0028] A method for preparing a friction lining for a mine hoist, comprising the steps of:

[0029] Step 1: Take 80 parts of powdered nitrile rubber, 40 parts of pottery clay, 30 parts of activated silica micropowder, 40 parts of nano-silica, 1.5 parts of sulfur, 10 parts of zinc oxide, 5 parts of magnesium oxide, and 10 parts of ferric oxide , 1 part of anti-aging agent 4010, 0.5 part of anti-aging agent 264, and 30 parts of stearic acid are sent to the mixer for mixing. The mixing time is 20 minutes. The temperature in the mixer is controlled at 80 ° C, and the mixed powder is ready for use;

[0030] Step 2, take 80 parts of phenolic resin in parts by weight and send it to the rubber mixing machine to plasticize and wrap the roll under the condition of 70°C;

[0031] Step 3. Add the powder mixed in step 1 to the rubber mixer and mix with the phenolic resin in step 2. The mixing temperature is 80°C, and the mixing time is 25 minutes. Then add 0.8 parts of TMTD. Continue mixi...

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Abstract

The invention relates to a frictional gasket for a mine hoister and a preparation method thereof; the raw materials by weight portion and the adding proportions are as follows: 40 to 80 portions of powdered nitrile rubber, 50 to 100 portions of phenolic resin, 20 to 40 portions of pottery clay, 15 to 30 portions of active silica micro powder, 25 to 50 portions of nanometer white carbon black, 1 to 2 portion(s) of sulphur, 5 to 10 portions of zinc oxide, 2 to 10 portions of magnesium oxide, 5 to 15 parts of ferric oxide, 0.5 to 1 portion of anti-aging agent 4010, 0.5 to 1 portion of anti-agingagent 264, 15 to 30 portions of stearic acid and 0.5 to 1 portion of TMTD. The raw materials are mixed and then are compressed and shaped in a mould; the prepared product has good mechanical performance, processing performance and higher frictional factor; under various working conditions, the frictional factor of the product is more than 0.29; the frictional gasket meets the operating requirements of various frictional devices and has good temperature characteristic; the frictional performance of the frictional gasket is slightly affected by temperature; and the frictional gasket is not molten when being heated so as to provide assurance for reliability of the frictional gasket in case of accidents.

Description

technical field [0001] The invention relates to a friction lining, especially a friction lining of a mine hoist and a preparation method thereof. Background technique [0002] At present, domestic mine hoist friction lining research started relatively late. Compared with foreign countries, the friction lining technology was backward at first, and the performance of friction lining was not as good as that of foreign countries. At one time, imported friction linings dominated the domestic market of our country. Since the successful development of our company's GM-3 series of high-performance friction linings in 2001, this situation has only changed. However, with the development of my country's hoist industry, the construction of large and extra-large mines has put forward higher requirements for friction linings. The original friction linings on the market can no longer meet the requirements of large mine hoists. [0003] In addition, due to resource protection policies in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L61/06C08K13/02C08K3/34C08K3/36C08K3/06C08K3/22B66B15/04
Inventor 楚广成赵宏马乐林玉芬孙召俊李英飞罗晓磊丁凯
Owner 中实洛阳机械工程科技有限公司
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