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Pipe end sealant for thermal insulation pipe and preparation method thereof

A technology of sealant and pipe end, applied in the field of sealant, can solve the problems of poor bonding performance of HDPE, etc., and achieve the effect of excellent salt solution performance, high mechanical strength, and wide sources

Active Publication Date: 2020-08-04
江苏达胜热缩防护用品有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to facilitate the subsequent construction, there is no insulation protection at both ends of the insulation pipe. Fusion-bonded epoxy powder (FBE) coating and high-density polyethylene (HDPE) materials are generally used to protect the exposed parts. Excellent, but poor adhesion to HDPE

Method used

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  • Pipe end sealant for thermal insulation pipe and preparation method thereof
  • Pipe end sealant for thermal insulation pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A pipe end sealant for thermal insulation pipes, its composition and content (by weight percentage) are as follows:

[0034] Butyl Rubber 15%

[0035] Ethylene-acrylate-maleic anhydride terpolymer (EMH) 35%

[0036] Ethylene-methyl acrylate copolymer (EMA) 20%

[0037] Terpene resin 9%

[0038] C5 petroleum resin 14%

[0039] Calcium Carbonate 5%

[0040] Antioxidant 1%

[0041] Carbon black 1%

[0042] The antioxidant is tetrakis(β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester.

Embodiment 2

[0044] A pipe end sealant for thermal insulation pipes, its composition and content (by weight percentage) are as follows:

[0045] Butyl Rubber 16%

[0046] Ethylene-acrylate-maleic anhydride terpolymer (EMH) 30%

[0047] Ethylene-methyl acrylate copolymer (EMA) 25%

[0048] Terpene resin 10%

[0049] C5 petroleum resin 15%

[0050] Calcium Carbonate 2%

[0051] Antioxidant 1%

[0052] Carbon black 1%

[0053] The antioxidant is tetrakis(β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester.

Embodiment 3

[0055] A pipe end sealant for thermal insulation pipes, its composition and content (by weight percentage) are as follows:

[0056] Butyl rubber 13%

[0057] Ethylene-acrylate-maleic anhydride terpolymer (EMH) 42%

[0058] Ethylene-methyl acrylate copolymer (EMA) 20%

[0059] Terpene resin 7%

[0060] C5 petroleum resin 11%

[0061] Calcium Carbonate 3%

[0062] Antioxidant 2%

[0063] Carbon black 2%

[0064] The antioxidant is tetrakis(β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester.

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Abstract

The invention relates to a pipe end sealant for a thermal insulation pipe. The pipe end sealant is prepared from the following components: 13 to 16 percent of butyl rubber, 30 to 42 percent of an ethylene-acrylate-maleic anhydride terpolymer, 20 to 30 percent of an ethylene-methyl acrylate copolymer, 7 to 10 percent of terpene resin, 11 to 15 percent of C5 petroleum resin, 2 to 10 percent of calcium carbonate, 1 to 3 percent of an antioxidant and 1 to 3 percent of carbon black. According to the invention, butyl rubber, the ethylene-acrylate-maleic anhydride terpolymer and the ethylene-methyl acrylate copolymer are used as main raw materials; meanwhile, the tackifying resin, the antioxidant, the filler and other components are added; the hot-melt sealant has the characteristic of higher viscosity, the finished product does not flow or embrittle, and the hot-melt sealant has better adhesiveness than an adhesive taking polyacrylate homopolymer resin as a main component, has better toughness than an adhesive taking aromatic polyester resin as a main component, and is not easy to embrittle and harden.

Description

technical field [0001] The invention relates to the field of sealants, in particular to a pipe end sealant for thermal insulation pipes. Background technique [0002] Insulation pipe is the abbreviation of thermal insulation pipe, which is often used in the transportation of liquid, gas and other media, and is an important part of pipeline construction projects in petroleum, chemical, aerospace, military, central heating, municipal and other pipelines. The insulation pipe is suitable for transporting various media in the range of -50°C to 150°C. [0003] The insulation pipe is divided into three layers from the inside to the outside. The first layer: working steel pipe layer, generally use seamless steel pipe, spiral steel pipe and straight seam steel pipe. The second layer: polyurethane insulation layer, which is formed by injecting rigid polyurethane foam stock solution into the cavity formed between the steel pipe and the outer protective layer with a high-pressure foam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J123/22C09J145/00C09J157/02C09J11/04C09J11/06C09J11/08
CPCC08K2003/265C08L2201/08C08L2201/14C08L2203/18C08L2205/025C08L2205/035C09J11/04C09J11/06C09J11/08C09J123/0869C08L23/0869C08L23/22C08L45/00C08L57/02C08K3/26C08K3/04C08K5/1345
Inventor 杨军伟韦良陆伟於维伟
Owner 江苏达胜热缩防护用品有限公司