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A kind of pipe end sealant for thermal insulation pipe and preparation method thereof

A technology of sealant and pipe end, which is applied in the field of sealant, can solve the problems such as poor bonding performance of HDPE, achieve good economic benefits and industrial production prospects, excellent aging resistance and air tightness, and improve the effect of temperature resistance

Active Publication Date: 2021-11-05
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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  • A kind of pipe end sealant for thermal insulation pipe and preparation method thereof
  • A kind of 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 thermal insulation pipes, which comprises the following components: butyl rubber 13-16%, ethylene-acrylate-maleic anhydride terpolymer 30-42%, ethylene-methyl acrylate copolymer 20% ‑30%, terpene resin 7‑10%, C5 petroleum resin 11‑15%, calcium carbonate 2‑10%, antioxidant 1‑3%, carbon black 1‑3%. The present invention specifically uses butyl rubber, ethylene-acrylate-maleic anhydride terpolymer, and ethylene-methyl acrylate copolymer as main raw materials, and simultaneously adds components such as tackifying resin, antioxidant and filler, so that the hot-melt The type sealant has the characteristics of high viscosity, and the finished product does not flow or become brittle. It has better adhesion compared with the adhesive based on polyacrylate homopolymer resin, and compared with the use of aromatic polymer The binder based on ester resin has better toughness and is less likely to become brittle and hard.

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 Patents(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