Preparation technique of sealing material

A preparation process and sealing material technology, which is applied in the field of circular preparation process of oil-resistant sealing materials, can solve the problems of large oil input and low recovery rate, and achieve the effect of reducing oil input

Active Publication Date: 2017-05-31
长春蓝天高新技术密封材料有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing production system, especially the processing technology of oil-resistant sealing materials is mainly roll forming method, which requires the use of solvents, and there have always been problems of large oil input and low recovery rate. With the increasing emphasis on environmental protection, various industries are also making continuous efforts to reduce emissions and control pollution

Method used

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  • Preparation technique of sealing material
  • Preparation technique of sealing material
  • Preparation technique of sealing material

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preparation example Construction

[0041] The invention provides a preparation process of a sealing material, comprising the following steps:

[0042] 1) After mixing the raw materials including rubber with the mixed solvent, the mixed raw materials are obtained, and then rolled into sheets to obtain semi-finished products;

[0043] After the waste solvent produced in the mixing step and the rolling step is absorbed, analyzed and separated, the recovered solvent is obtained;

[0044] 2) After the semi-finished product obtained in the above steps is vulcanized, the sealing material is obtained;

[0045] The recovered solvent obtained in the above steps is sent to step 1) for recycling.

[0046] In the invention, firstly, the raw material including rubber is mixed with a mixed solvent to obtain the mixed raw material, and then rolled into a sheet to obtain a semi-finished product.

[0047] The present invention has no special restrictions on the mixed solvent, and those skilled in the art can select and adjust ...

Embodiment 1

[0079] Production of sealing material NY300 sealing liner board

[0080]

[0081] Take toluene and 120 solvent oil from the oil depot according to the volume ratio of 6:1 to the oil storage tank in the production workshop;

[0082] Mix 200Kg of the above raw materials in proportion, put them into the mixer, add 140Kg of mixed solvent twice and stir to completely dissolve the rubber, and mix evenly with fibers, fillers, vulcanization aids, anti-aging agents, etc.

[0083] Weigh the mixed material according to the planned product thickness, and put it into the two rolls of the hot roll temperature 110°C sheeting machine. The material is wound on the hot roll during the opposite rotation of the two rolls, and the solvent is sprayed on the material at the same time. (about 20Kg / 200Kg material), turn the material between the two rollers to reduce the resistance when the two rollers rotate, keep the surface of the small roller smooth, and achieve the expected product thickness by a...

Embodiment 2

[0089] Production of sealing material MT250 sealing liner plate

[0090]

[0091] Take toluene and 120 solvent oil from the oil depot according to the volume ratio of 6:1 to the oil storage tank in the production workshop;

[0092] Mix 200Kg of the above raw materials in proportion, put them into the mixer, add 130Kg of mixed solvent twice and stir to completely dissolve the rubber, and mix evenly with fibers, fillers, vulcanization aids, anti-aging agents, etc.

[0093] Weigh the mixed material according to the planned product thickness, and put it into the two rolls of the hot roll temperature 110°C sheeting machine. The material is wound on the hot roll during the opposite rotation of the two rolls, and the solvent is sprayed on the material at the same time. (about 20Kg / 200Kg material), turn the material between the two rollers to reduce the resistance when the two rollers rotate, keep the surface of the small roller smooth, and achieve the expected product thickness by...

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Abstract

The invention provides a preparation technique of a sealing material. The technique comprises the following steps: mixing a raw material comprising rubber with a mixed solvent to obtain a mixed raw material, and rolling into a sheet to obtain a semifinished product; carrying out adsorption, desorption and separation on the waste solvent generated by the mixing and rolling to obtain a recovered solvent; vulcanizing the semifinished product to obtain the sealing material; and sending the recovered solvent to the step above for cyclic utilization. Compared with the prior art, the technique aims to solve the ever-existing problems of high oil input and low recovery rate in the solvent in the existing production system and especially in the oil-resistant sealing material processing process. The mixed solvent is creatively used instead of the single solvent, thereby obtaining unexpectable technical effects, greatly lowering the oil input, obviously enhancing the solvent recovery rate in the production process, reducing the sewage treatment capacity and lowering the production cost.

Description

technical field [0001] The invention belongs to the technical field of sealing material preparation, and relates to a preparation process of a sealing material, in particular to a cyclic preparation process of an oil-resistant sealing material. Background technique [0002] Sealing materials refer to materials that can withstand joint displacement to achieve airtight and watertight purposes, and are embedded in joints such as devices and buildings. Sealing materials involve almost all industrial and civil fields, and play an important role in national defense, chemical industry, coal, petroleum, metallurgy, transportation, machinery manufacturing industry and aerospace. Sealing materials are divided into four categories according to their form: fluid sealing materials, non-fluid sealing materials, dynamic seals and static seals, including pump seals, hydraulic seals, flange seals, equipment seals, joint surface seals and auxiliary seals. When used, it can be prepared into l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L9/00C08L9/06C08L7/00C08L63/00C08L55/02C08L61/06C08L67/00C08L77/06C08L1/02C08K13/04C08K7/06C08K7/14C08K7/12C08K13/02C08K3/30C08K3/36C08J11/02C08J3/205C09K3/10B29C43/24B29C35/02
CPCB29C35/02B29C43/24C08J3/20C08J11/02C08J2307/00C08J2309/00C08J2309/02C08J2309/06C08L7/00C08L9/00C08L9/02C08L9/06C09K3/10C08L63/00C08L55/02C08L61/06C08L67/00C08L77/06C08L1/02C08K13/04C08K7/06C08K7/14C08K7/12C08K13/02C08K2003/3045C08K3/36
Inventor 王宏
Owner 长春蓝天高新技术密封材料有限责任公司
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