Preparation method of anti-termite protective layer and gas pipeline with protective layer

A gas pipeline and protective layer technology, which is applied in pipeline protection, pipeline damage/wear prevention, mechanical equipment, etc., can solve problems such as gas leakage, troublesome process, pipeline damage, etc., to improve safety reliability, safe and convenient connection, and extend the effect of life

Pending Publication Date: 2022-08-02
SICHUAN YADA PLASTIC PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, while PE gas pipes are widely used, there are also some difficult problems that need to be solved.
As we all know, gas pipelines have high requirements for safety performance. However, due to the low hardness of PE materials, they can be damaged or even bitten through by termites, resulting in gas leakage; The surface is easily scratched during the laying process, which also brings serious hidden dangers to the safe use of PE pipes
In addition, when PE pipes are connected by electrofusion, the surface of the pipes needs to be treated, which is relatively troublesome.

Method used

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  • Preparation method of anti-termite protective layer and gas pipeline with protective layer
  • Preparation method of anti-termite protective layer and gas pipeline with protective layer
  • Preparation method of anti-termite protective layer and gas pipeline with protective layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method of an anti-ant protective layer, comprising the following contents:

[0045] 1) Weigh each component according to the formula of the protective layer, add it to the mixer and mix, and release the material after mixing;

[0046] 2) Add the mixed material in step 1) into the twin-screw extruder for melt blending, and after the material comes out of the die in the twin-screw extruder, the protective layer is obtained by blow molding, which is recorded as the sample 1; The temperature of each zone of the twin-screw extruder is set as follows: the temperature of the first zone is 140-145°C, the temperature of the second zone is 160-165°C, the temperature of the third zone is 175-180°C, the temperature of the fourth zone is 190-200°C, and the temperature of the fifth zone is 190-200°C. The temperature of the zone is 205-210 ℃, and the temperature of the sixth zone is 220-225 ℃; the main engine speed of the twin-screw extruder is 250-300r / min, and the curr...

Embodiment 2

[0050] A preparation method of an anti-ant protective layer, comprising the following contents:

[0051] 1) Weigh each component according to the formula of the protective layer, add it to the mixer and mix, and release the material after mixing;

[0052] 2) Add the mixed material in step 1) into the twin-screw extruder for melt blending, and after the material comes out of the die in the twin-screw extruder, the protective layer is obtained by blow molding, which is recorded as the sample 2; The temperature of each zone of the twin-screw extruder is set as follows: the temperature of the first zone is 140-145°C, the temperature of the second zone is 160-165°C, the temperature of the third zone is 175-180°C, the temperature of the fourth zone is 190-200°C, and the temperature of the fifth zone is 190-200°C. The temperature of the zone is 205-210℃, and the temperature of the sixth zone is 220-225℃; the main engine speed of the twin-screw extruder is 250-300r / min, and the current ...

Embodiment 3

[0056] A preparation method of an anti-ant protective layer, comprising the following contents:

[0057] 1) Weigh each component according to the formula of the protective layer, add it to the mixer and mix, and release the material after mixing;

[0058] 2) Add the mixed material in step 1) into the twin-screw extruder for melt blending, and after the material comes out of the die in the twin-screw extruder, the protective layer is obtained by blow molding, which is recorded as the sample 3. The temperature of each zone of the twin-screw extruder is set as follows: the temperature of the first zone is 140-145°C, the temperature of the second zone is 160-165°C, the temperature of the third zone is 175-180°C, the temperature of the fourth zone is 190-200°C, and the temperature of the fifth zone is 190-200°C. The temperature of the zone is 205-210℃, and the temperature of the sixth zone is 220-225℃; the main engine speed of the twin-screw extruder is 250-300r / min, and the curren...

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Abstract

According to the preparation method of the anti-termite protection layer and the gas pipeline with the protection layer, the preparation method comprises the following steps that 1, all components are weighed according to the formula of the protection layer and added into a mixing machine to be mixed, and materials are discharged after mixing is completed; and (2) adding the materials mixed in the step (1) into a double-screw extruder for melt blending, and after the materials are discharged from a die head in the double-screw extruder, carrying out blow molding to obtain the protective layer, the protective layer is prepared from the following components in parts by mass: 80 to 100 parts of resin, 1 to 4 parts of an antioxidant, 1 to 5 parts of pyrethroids, 0.5 to 1.5 parts of sulfluramid, 0.5 to 1 part of coal tar, 0.1 to 2 parts of kaolin, 0.1 to 0.2 part of a coupling agent and 0.1 to 1.0 part of a dispersing agent. The protective layer prepared by the method not only can chemically and effectively inhibit the invasion of termites, but also can improve the hardness, so that the termites do not wash or bite physically.

Description

technical field [0001] The invention relates to the technical field of gas pipeline protection, in particular to a preparation method of an anti-termite protective layer and a gas pipeline with the protective layer. Background technique [0002] PE gas pipes have the advantages of long service life, strong chemical corrosion resistance, simple and reliable construction, good air tightness, good toughness, energy saving, and low overall pipeline cost. They have been used in more and more gas transportation. In some areas, PE pipelines have been used as the first choice for urban gas pipelines. [0003] However, there are some difficult problems that need to be solved when PE gas pipes are widely used. As we all know, gas pipelines have high requirements for safety performance. However, due to the low hardness of PE materials, the pipes can be damaged or even bitten through by termites, resulting in gas leakage; on the other hand, due to the characteristics of PE pipeline mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L95/00C08K5/435C08K3/34C08K5/101C08K5/315F16L57/02
CPCC08L23/06C08L23/12F16L57/02C08L2203/18C08L95/00C08K5/435C08K3/346C08K5/101C08K5/315
Inventor 李松泽巨海龙叶坤明任重李瑜李龙娇李方远黄志勇
Owner SICHUAN YADA PLASTIC PRODS
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