Flame-retarding and antistatic friction liner for elevator and preparation method of flame-retarding and antistatic friction liner

Abstract

The invention provides a flame-retarding and antistatic friction liner. The flame-retarding and antistatic friction liner is prepared from the following raw materials in parts by weight: 100 to 250 parts of cashew nut oil modified phenol formaldehyde resin, 5 to 30 parts of rubber powder, 10 to 20 parts of calcium sulfate whiskers, 10 to 30 parts of an antistatic agent, 10 to 20 parts of barium sulfate, 5 to 10 parts of bronze powder, 5 to 10 parts of iron powder, 1 to 10 parts of a toner, 1 to 5 parts of a coupling agent, 2 to 5 parts of wollastonite, 1 to 10 parts of sulfur, 3 to 5 parts of zinc oxide, 0 to 2 parts of stearic acid, 10 to 50 parts of hydrogenated nitrile butadiene rubber, 5 to 15 parts of micro-encapsulated red phosphorus, 5 to 30 parts of ammonium polyphosphate, 10 to 20 parts of dibutyl phthalate, 1 to 3 parts of an accelerant M, 0.5 to 1 part of an accelerant TMTD (Tetramethylthiuram Disulfide), 1 to 5 parts of an accelerant H and 1 to 3 parts of an antioxidant 1010. The invention further provides a preparation method. The flame-retarding and antistatic friction liner has stable friction coefficient, high strength and low abrasion loss, and flame-retarding and antistatic properties.

Description

technical field [0001] The invention relates to the technical field of friction pads, in particular to a flame-retardant and antistatic friction pad for a hoist and a preparation method thereof. Background technique [0002] The friction pad is a part of the multi-rope friction hoist. It is generally made of polymer materials. It can protect the wire rope from damage and provide a certain friction driving force. Multi-rope friction hoists are mostly used in coal mines, gold mines and other mining fields, which have certain mandatory requirements for flame retardant and antistatic. Due to the constant friction between the friction pad and the steel wire rope during use, a certain amount of electric charge will accumulate, bringing a certain risk of gas explosion. In addition, because the pad made of polymer materials is a non-flame retardant material, it is also a coal mine. potential safety hazards. [0003] At present, although mines and other users have put forward relev...

AI Technical Summary

Problems solved by technology

Due to the constant friction between the friction liner and the steel wire rope during use, a certain amount of charge will be accumulated, which will bring a certain risk of gas explosion. potential safety hazard

[0003] At present, although mines and other users have put forward relevant flame retardant and antistatic requirements for friction linings, and some domestic enterprises have tried to research friction lining materials for flame retardant and antistatic aspects, but since most friction linings are colored products, they cannot be added Black fillers with good reinforcement such as conductive graphite or carbon black, and non-black flame retardants and antistatic components greatly reduce the strength, friction coefficient, wear resistance and other properties of the product, making it difficult to meet the requirements of related technologies. This is also the technical difficulty in developing flame retardant antistatic friction liners for many years

According to the survey, there is currently no domestic patent related to friction linings with flame-retardant and anti-static properties for elevators.

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