Production method of chemical pump damping sound absorption and noise reduction sealing rubber

A sealing rubber and production method technology, applied in the field of polymer materials, can solve the problems of pressure resistance, vibration reduction, weather resistance and corrosion resistance, difficult to achieve balance, porous can not guarantee sealing, complex preparation methods, etc., to achieve good hydrophobicity, Increase the relaxation absorption effect, improve the effect of acid and alkali corrosion resistance and wear resistance

Active Publication Date: 2020-10-30
ANHUI TENGLONG PUMP VALVE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

", but using porous sound absorption and noise reduction is common sense in life and porous does not guarantee sealing, which is greatly restricted and restricted in the sealing application of chemical pumps. At present, there is no chemical pump with better performance in the market. Noisy rubber products and corresponding technologies. The existing rubber sealing materials do not have the characteristics of pressure resistance, vibration reduction, weather resistance, corrosion resistance, etc. in the liquid environment of chemical pumps, and it is difficult to achieve a balance. The use of materials is limited. At present, most of them are polytetrafluoroethylene plastics, etc., which cannot widely satisfy the sound absorption and noise reduction in the liquid environment of the existing corrosion-resistant chemical pumps, and at the same time have good comprehensive properties such as shock absorption and corrosion resistance. The existing polyurethane and other materials for underwater sound absorption cannot meet the requirements of the chemical pump corrosion-resistant environment. In order to solve the above problems, on the basis of the urgent need to develop chemical pump sealing rubber with balanced performance, it is urgent to develop A production method of chemical pump damping sound-absorbing and noise-reducing sealing rubber to meet existing technical needs and performance requirements

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  • Production method of chemical pump damping sound absorption and noise reduction sealing rubber

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Embodiment 1

[0021] A method for producing chemical pump sound-absorbing and noise-reducing sealing rubber, comprising the following steps:

[0022](1) Preparation of chlorosulfonated butyl rubber: Dissolve pulverized butyl rubber in carbon tetrachloride at 75°C to form 100 parts of a 150 g / L solution, add 0.4 parts of ethanolamine and azobisisobutyronitrile to it 0.2 parts of initiator, blow chlorine gas and sulfur dioxide into the glue solution at 70°C with a volume ratio of 1:2 chlorosulfonating agent, the chlorine content is 1.0%, and when the sulfonation degree is 0.190meq / g, remove the acid gas and add diisopropylamine Neutralize to pH 7.4, add water to the quenched glue, the mixture of water and quenched glue is emulsified to form a slurry of neutralized sulfonated polymer, remove the solvent from the slurry, and separate it from the water (2) Adjust the temperature of the open mill to 85°C, adjust the roll distance to 0.65mm, and add 105 parts of chlorosulfonated butyl rubber to th...

Embodiment 2

[0024] (1) Preparation of chlorosulfonated butyl rubber: Dissolve pulverized butyl rubber in carbon tetrachloride at 65°C to form 100 parts of a 100g / L solution, add 0.2 parts of ethanolamine and azobisisobutyronitrile to it 0.1 part of initiator, blow chlorine gas and sulfur dioxide into the glue solution at 70°C with a volume ratio of 1:2 chlorosulfonating agent, the chlorine content is 1.0%, and when the sulfonation degree is 0.170meq / g, remove the acid gas and add diisopropylamine Neutralize to pH 7.2, add water to the quenched glue, the mixture of water and quenched glue is emulsified to form a slurry of neutralized sulfonated polymer, remove the solvent from the slurry, and separate it from the water (2) Adjust the temperature of the open mill to 80~85°C, adjust the roller distance to 0.6~0.65mm, add step (1) to obtain chlorosulfonated butyl rubber 100~105 parts, make the rubber cover the front roller, add the mixture of 1 part of stearic acid and 5 parts of sericite pow...

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Abstract

The invention belongs to the field of high polymer materials, and particularly relates to a production method of chemical pump damping sound absorption and noise reduction sealing rubber. The production method is simple, the raw material sources are wide, the sulfonated graphite oxide is used for improving the corrosion resistance, a high loss effect is accidentally obtained, the effective loss ofthe sealing rubber is substantially improved, the used raw materials have wide sources, and the production method is simple and easy to perform. The acoustic performance of the sealing rubber in a chemical pump does not have great change after the sealing rubber is used for many years, the sound absorption and noise reduction requirements of the chemical pump can be met, and the rubber has good corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a production method of chemical pump damping sound-absorbing and noise-reducing sealing rubber. Background technique [0002] Chemical pumps are widely used in industrial and urban water supply and drainage, as well as irrigation and drainage of farmland and orchards, for transporting clean water or other liquids. With the advancement of chemical pump technology, the continuous improvement of the level of industrialization, and the continuous enhancement of people's awareness of environmental protection, chemical pumps have attracted widespread attention because of their special working environment and gear pump noise reduction. In terms of energy saving and noise reduction, the biochemical workshop of the factory has transformed the pump to reduce noise pollution and save a lot of money. However, no leakage is the eternal pursuit of chemical equipment, but there is sti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/26C08L23/20C08L23/28C08K13/06C08K5/09C08K3/34C08K3/22C08K9/02C08K9/04C08K7/24
CPCC08L23/26C08K2003/2296C08L2205/03C08L2205/02C08L23/20C08L23/28C08K13/06C08K5/09C08K3/34C08K3/22C08K9/02C08K9/04C08K7/24Y02P20/54
Inventor 徐向远
Owner ANHUI TENGLONG PUMP VALVE MFG CO LTD
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