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Coating prepared from by-products in production of coal pitch-based carbon material and method thereof

A technology of carbon materials and coal tar pitch, which is applied in the field of coatings prepared by by-products, can solve the problems of waste of raw materials, manufacturing costs, and compatibility troubles with epoxy asphalt, etc., achieve good waterproofing, improve brittleness and easy cracking, and reduce production costs Effect

Active Publication Date: 2020-06-05
湖北三宁碳磷基新材料产业技术研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compatibility of asphalt and epoxy resin has always been a major problem in the preparation of epoxy asphalt.
Therefore, when preparing high-end carbon materials, a large amount of γ-resin (toluene soluble components) is removed, resulting in waste of raw materials and increased manufacturing costs

Method used

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  • Coating prepared from by-products in production of coal pitch-based carbon material and method thereof
  • Coating prepared from by-products in production of coal pitch-based carbon material and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Melt and dehydrate medium temperature coal tar pitch at 100°C, dissolve and filter with toluene solvent to obtain toluene soluble pitch (toluene content 10%), take 50g of toluene soluble pitch and melt it at 50°C after dehydration, add 5g of ZnO powder, asbestos 5g of powder, 5g of chopped carbon fiber with a length of 10mm, 20g of epoxy 269 resin, mixed evenly, as component A. During construction, add 3g of DA-134 ketimine curing agent as component B, and stir evenly to obtain a coating prepared by using the by-products in the production of coal tar pitch-based carbon materials.

Embodiment 2

[0023] Melt and dehydrate high-temperature coal tar pitch at 150°C, dissolve and filter with toluene solvent to obtain toluene-soluble pitch (toluene content 20%), take 65g of toluene-soluble pitch, add 4g of ZnO powder, 3g of asbestos powder in sequence, and a length of 5mm Chopped carbon fiber 5g, epoxy 269 resin 25g, mixed evenly, as A component. During construction, add 5 g of DA-315 ketimine curing agent as component B, stir evenly, and obtain a coating prepared by using the by-products in the production of coal tar pitch-based carbon materials.

Embodiment 3

[0025] Melt and dehydrate medium-temperature coal tar pitch at 100°C, dissolve and filter with toluene solvent to obtain toluene-soluble pitch (15% toluene content), take 70g of this toluene-soluble pitch, heat it to 100°C, and add 3g of ZnO powder and asbestos powder in sequence 8g, 5g of chopped carbon fiber with a length of 10mm, 25g of epoxy 269 resin, mixed evenly, as component A. During construction, add 4 g of DA-134 ketimine curing agent as component B, stir evenly, and obtain a coating prepared by using the by-products in the production of coal tar pitch-based carbon materials.

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Abstract

The invention discloses a coating prepared from by-products in production of a coal pitch-based carbon material and a method thereof. The coating comprises the following raw materials in parts by weight: 35-70 parts of a byproduct toluene soluble substance from production of the coal pitch-based carbon material, 10-25 parts of epoxy resin, 1-5 parts of a curing agent, 1-5 parts of ZnO powder, 1-10parts of asbestos powder and 1-5 parts of chopped carbon fibers. The coal tar pitch is medium-temperature coal tar pitch or high-temperature coal tar pitch, and the content of toluene in the byproduct toluene soluble substance is 10-20 wt%. According to the invention, the byproduct toluene soluble substance in the production of the coal pitch-based carbon material is recycled and used as a main film-forming component of the coating, so that the production cost is reduced, and the problem of byproduct treatment in the preparation process of the high-performance coal pitch-based carbon materialcan be solved. The obtained coating has good water resistance, corrosion resistance, weather resistance and strong adhesive force, the strength and toughness of a coating film are improved, and compared with a traditional asphalt coating, the problem that brittleness is prone to cracking is solved to a certain extent.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a coating and a method prepared by using by-products in the production of coal tar pitch-based carbon materials. Background technique [0002] Asphalt is a dark brown organic gel material. Because of its excellent corrosion resistance, moisture resistance, water resistance, salt and alkali resistance, and weather resistance, it can be used as a base material for coatings and is widely used in oil and gas pipelines, sewage Waterproof and anti-corrosion fields such as pools, steel, cement buildings, etc. Because asphalt is thermosetting, it is easy to flow at high temperature and brittle at low temperature. When it is used as a coating or paving material, it is prone to cracks and affects the performance. Therefore, it is necessary to modify the asphalt, such as maleating the base asphalt, adding epoxy resin to form an interpenetrating network, improving the fatigue resistance an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D195/00C09D163/00C09D5/08C09D5/14C09D7/61C09D7/40
CPCC09D195/00C09D5/08C09D5/14C09D7/61C09D7/70C08K2003/2296C08L2201/08C08L63/00C08K7/12C08K7/06C08K3/22
Inventor 魏天荣徐国庆陈坤
Owner 湖北三宁碳磷基新材料产业技术研究院有限公司
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