Coal tar cleaning agent

A cleaning agent and coal tar technology, applied in the field of cleaning agents, can solve the problems of cleaning workers' physical hazards, high risk, and low flash point, and achieve the effects of not being easy to ignite, improving the environment, and high flash point

Inactive Publication Date: 2018-09-14
长沙森彬环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two cleaning agents have some common features, both have a strong pungent smell, volatilize some toxic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] A coal tar cleaning agent mixed with backup raw materials according to weight percentage. The raw materials and weight percentages are: methylene chloride 40%, tetrafluoroethylene 15%, d40 solvent oil 15%, methyl pyrrolidone 10%, ethanol 5% , Ethylene glycol monobutyl ether 15%.

Example Embodiment

[0022] Example 2

[0023] A coal tar cleaning agent, which is made by mixing backup raw materials according to weight percentage. The raw materials and weight percentages are: dichloromethane 20%, tetrafluoroethylene 25%, d40 solvent oil 18%, methyl pyrrolidone 15%, ethanol 6% , Ethylene glycol monobutyl ether 16%.

Example Embodiment

[0024] Example 3

[0025] A coal tar cleaning agent which is made by mixing backup raw materials according to weight percentage. The raw materials and weight percentages are: methylene chloride 30%, tetrafluoroethylene 20%, d40 solvent oil 20%, methyl pyrrolidone 10%, ethanol 5% , Ethylene glycol monobutyl ether 15%.

[0026] Compared with acetone and banana water, for the cleaning of coal tar dirt on aircraft brake pads and their processing equipment, the cleaning agent made according to Example 1, Example 2 and Example 3 has a cleaning rate of 98% for coal tar dirt. Above, the same cleaning effect is achieved. Under the same cleaning method and conditions, using the cleaning agents of Example 1, Example 2 and Example 3, the cleaning time was shortened by more than half an hour. The cleaning agents of Example 1, Example 2 and Example 3 have no pungent odor and can directly contact human skin.

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PUM

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Abstract

The invention discloses a coal tar cleaning agent. The coal tar cleaning agent is mainly used for cleaning coal tar dirt generated in the machining process of an aircraft brake pad. The coal tar cleaning agent is prepared by mixing, by weight, 20-40% of dichloromethane, 10-30% of tetrafluoroethylene, 10-30% of d40 detergent solvent naphtha, 3-20% of methylpyrrolidone, 3-20% of ethyl alcohol and 10-20% of ethylene glycol butyl ether. The cleaning rate of the cleaning agent for coal tar dirt generated in the machining process of the aircraft brake pad reaches 98% or above, the dirt is basicallycleaned thoroughly, the cleaning time is short; the flash point is high, ignition is not likely to be performed, explosion is not caused, and the security of operation of workers is improved; the cleaning agent can make direct contact with skin, no harm is caused to the human body basically, no pungent smell is generated, and the worker cleaning environment is improved.

Description

technical field [0001] The invention relates to a cleaning agent for aircraft, in particular to a cleaning agent for cleaning coal tar dirt on aircraft brake pads and processing equipment. Background technique [0002] The aircraft brake system is a multi-plate brake, which is arranged alternately with moving plates and static plates, and is divided into wheel brake system, reverse thrust brake device and pneumatic brake device. Carbon / carbon materials (graphite-based composite materials) have been extended to aerospace brake systems due to their advantages such as high temperature resistance, corrosion resistance, and low thermal expansion coefficient. After the brake pads in the aircraft braking system are processed, carbonaceous or carbonaceous impurities will be produced on the brake pads and processing equipment, which will stick together with tar to form a sticky, extremely difficult to clean coal tar dirt. Based on the cleaning experience of asphalt, tar and other di...

Claims

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Application Information

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IPC IPC(8): C11D7/60C11D7/30C11D7/50C11D7/32C11D7/26
Inventor 王伟
Owner 长沙森彬环保科技有限公司
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