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Anti-termite adhesive tape substrate of polyethylene pipeline and preparation method of substrate

A polyethylene and anti-termite technology, applied in the direction of adhesives, film/sheet adhesives, etc., can solve the problems of poor thermal stability, no anti-termite, short service life, etc., to achieve heat aging resistance and anti-aging The effect of improving abrasiveness

Active Publication Date: 2015-05-27
CYG CHANGTONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Commonly used polyethylene substrates are mainly low-density polyethylene, the material is soft, and the material itself does not have termite-proof properties. When used for surface protection of buried facilities, it is difficult to stop termites from biting, and substrates often appear The phenomenon of being bitten by termites
[0005] In addition, the commonly used polyethylene film can not be used as a tape base material for pipeline protection due to its poor thermal stability, poor heat aging resistance, particularly obvious attenuation of physical properties in high temperature environments, and a short service life.
[0006] However, the existing commercially available tape base materials used in pipeline protection have physical properties such as tensile strength, elongation at break, electric strength, volume resistivity, heat aging resistance, water absorption, water vapor permeability, and chemical medium corrosion resistance. The performance is not high, especially the anti-termite performance, which cannot meet the requirements of customers

Method used

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  • Anti-termite adhesive tape substrate of polyethylene pipeline and preparation method of substrate
  • Anti-termite adhesive tape substrate of polyethylene pipeline and preparation method of substrate
  • Anti-termite adhesive tape substrate of polyethylene pipeline and preparation method of substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] According to mass percentage, the formula is: ultra-low density polyethylene (DFDA-1095NT) 70%; maleic anhydride modified linear low density polyethylene (208) 10%; medium density polyethylene (3321C) 8.0%; high density polyethylene Ethylene (5300B) 7.0%; primary antioxidant 10101.0%; secondary antioxidant DSTDP 1.0%; black masterbatch 1.0%; bifenthrin 1.0%, permethrin 1.0%.

[0036] Follow the steps below to prepare:

[0037] Step 1: Weigh each component according to the formula, mix uniformly and pass through a twin-screw extruder to extrude granulated material;

[0038] Step 2: Add the pellets obtained in Step 1 into a single-screw extruder, extrude and granulate to obtain substrate pellets, and the barrel of the single-screw extruder is sequentially set with seven stages of heating from the feed port to the die head zones, the temperatures in each zone are: 100±10°C, 120±10°C, 140±10°C, 160±10°C, 160±10°C, 180±10°C and 180±10°C; the single-screw extruder Die head ...

Embodiment 2

[0041] According to mass percentage, the formula is: ultra low density polyethylene (VL200) 60%; maleic anhydride modified linear low density polyethylene (208) 15%; medium density polyethylene (3802) 15%; high density polyethylene ( 5621D) 5%; primary antioxidant (1010) 1.0%; secondary antioxidant (DSTDP) 1.0%: black mother 2%; deltamethrin 1.0%.

[0042] Follow the steps below to prepare:

[0043] Step 1: Weigh each component according to the formula, mix uniformly and pass through a twin-screw extruder to extrude granulated material;

[0044] Step 2: Add the pellets obtained in Step 1 into a single-screw extruder, extrude and granulate to obtain substrate pellets, and the barrel of the single-screw extruder is sequentially set with seven stages of heating from the feed port to the die head zones, the temperatures in each zone are: 100±10°C, 120±10°C, 140±10°C, 160±10°C, 160±10°C, 180±10°C and 180±10°C; the single-screw extruder Die head temperature: 180±20°C.

[0045] St...

Embodiment 3

[0047] According to mass percentage, the formula is: ultra-low density polyethylene (DFDA-1098NT) 55%; maleic anhydride modified linear low density polyethylene (208) 17%; medium density polyethylene (3721C) 15%; high density polyethylene Ethylene (TR-144) 9.0%; primary antioxidant (1010) 0.5%; secondary antioxidant (DSTDP) 0.5%: black mother 1.5%; fenvalerate 1.5%.

[0048] Follow the steps below to prepare:

[0049] Step 1: Weigh each component according to the formula, mix uniformly and pass through a twin-screw extruder to extrude granulated material;

[0050] Step 2: Add the pellets obtained in Step 1 into a single-screw extruder, extrude and granulate to obtain substrate pellets, and the barrel of the single-screw extruder is sequentially set with seven stages of heating from the feed port to the die head zones, the temperatures in each zone are: 110±10°C, 130±10°C, 150±10°C, 170±10°C, 170±10°C, 190±10°C and 190±10°C; the single-screw extruder Die head temperature: 190...

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Abstract

The invention provides an anti-termite adhesive tape substrate of a polyethylene pipeline and a preparation method of the substrate. The anti-termite adhesive tape substrate of the polyethylene pipeline is prepared from the following components in percentage by mass: 50-75% of ultralow density polyethylene, 10-20% of maleic anhydride modified linear low-density polyethylene, 5-15% of medium-density polyethylene, 5-15% of high-density polyethylene, 1-2% of an antioxidant, 1-2% of color master batch and 1-2% of an anti-termite agent. The anti-termite adhesive tape substrate of the polyethylene pipeline is greatly enhanced in heat resisting stability, heat aging resistance, environmental stress cracking resistance, stretchability, shock resistance and wear resistance, and also has the function of prevention against termites.

Description

technical field [0001] The invention relates to the field of pipeline termite prevention and control, in particular to a polyethylene pipeline anti-termite tape base material and a preparation method thereof. The tape is used for termite-proof protection of buried polyethylene gas pipes in coastal cities, and can also be used for other buried Termite protection for facilities, such as wires and cables, urban buried heating pipes and other facilities. Background technique [0002] Polyethylene, referred to as PE, is a thermoplastic resin obtained by polymerization of ethylene, including high-density polyethylene, medium-density polyethylene, low-density polyethylene and linear low-density polyethylene. Polyethylene has a wide range of uses, one of which is to make polyethylene film, which has a wide range of applications, including polyethylene agricultural film, polyethylene packaging film, cold-wound adhesive tape polyethylene-based film, etc. [0003] Since polyethylene m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L51/06C09J7/02C08J3/22B29C55/28B29C47/92B29C48/92
CPCB29C48/0017B29C48/10B29C48/802B29C48/832B29K2023/0616B29K2023/0641B29K2023/065C08K2201/014C08L23/06C08L2201/08C08L2203/16C08L2205/025C08L2205/035C08L2207/062C08L2207/064C08L51/06C08K5/1345C08K5/101C08K5/315
Inventor 谭南枢夏梦军陈君徐焕辉
Owner CYG CHANGTONG NEW MATERIAL
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