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Method for controllably preparing MPP trenchless pipe surface coating by using diamond powder

A surface coating, diamond powder technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as scratches, pipe damage, damage to polymer crystalline state, etc., to achieve controllable hardness, safe and environmentally friendly manufacturing process, Uniform effect

Active Publication Date: 2021-10-29
安徽明能电气有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is easy to be scratched by tools, vehicles, etc. during storage, transportation, and installation, which destroys the polymer crystal state in the MPP trenchless pipe and becomes a mechanical and chemical weak point. The mechanical damage and Chemical corrosion will have an expansion effect, thereby causing damage to the pipe

Method used

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  • Method for controllably preparing MPP trenchless pipe surface coating by using diamond powder
  • Method for controllably preparing MPP trenchless pipe surface coating by using diamond powder
  • Method for controllably preparing MPP trenchless pipe surface coating by using diamond powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Surface coating of MPP trenchless pipe modified by micron and nanometer diamond powder

[0032] Proceed as follows:

[0033] ① First wash the reaction tube twice with ethanol / water solution, weigh 1 g of nano-diamond powder (particle size 80-100 nm) and place it in the reaction tube, then add 0.1 g of aminopropyltriethoxysilane, 1 g of ethanol, and 0.2 g of water g. 2 g of hyperbranched polyester, kept in a water bath at 50° C. for 10 minutes. At 4000rpm, emulsify and homogeneously stir with high-speed shearing 4 times, 2min each time. After the reaction was complete, 1 g of deionized water was added, and the ethanol was removed by rotary evaporation at 80° C. to obtain a mixed solution of modified nano-diamond powder dispersed in hyperbranched polyester.

[0034] ② Wash the reaction tube twice with ethanol / water solution, weigh 0.5g of micron diamond powder (particle size: 5-25μm) and place it in the reaction tube, then add 0.05g of aminopropyltriethoxysilane, 1g of ...

Embodiment 2

[0038] Micron Diamond Powder Modified MPP Trenchless Pipe Surface Coating

[0039] The steps are the same as in Example 1, step 1 is omitted, and the mass ratio of the mixed liquid in which the modified micron diamond powder is dispersed in hyperbranched polyester to the water-based polyisocyanate in step 3 is adjusted to be 1.5:0.75.

Embodiment 3

[0041] Nano-diamond Powder Modified MPP Trenchless Pipe Surface Coating

[0042] The steps are the same as in Example 1, step 2 is omitted, and the mass ratio of the mixed liquid in which the modified nano-diamond powder is dispersed in the hyperbranched polyester to the water-based polyisocyanate in step 3 is adjusted to be 1.5:0.75.

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Abstract

The invention discloses a method for controllably preparing an MPP trenchless pipe surface coating through diamond powder, and relates to the technical field of pipe surface coating preparation. A silane coupling agent with amino as an end group and micron and nano diamond powder are used for pretreatment, a water-based dispersion is formed in hyperbranched polyester, the water-based dispersion is compounded with water-based polyisocyanate, and then the surface of a MPP trenchless pipe is coated with a compounded material, so that a high-hardness coating is formed on the surface of the MPP trenchless pipe. The MPP trenchless pipe surface coating which is controllably prepared from the diamond powder is successfully obtained through an organic / inorganic composite material forming method. The modified coating with controllable hardness is obtained by regulating and controlling the proportion of different modified powder, then the high-hardness MPP trenchless pipe surface coating is successfully prepared, and the MPP trenchless pipe surface coating has the characteristics of controllable hardness, safe and environment-friendly manufacturing process, simple coating process, uniform shape and the like.

Description

technical field [0001] The invention relates to the technical field of pipe surface coating preparation, in particular to a method for controllably preparing the surface coating of an MPP non-excavation pipe by using diamond powder. Background technique [0002] Modern trenchless pipe technology is a new type of technology for laying underground public municipal pipes through surveying, exploration, guiding, directional drilling, and laying of underground public municipal pipes without excavating the ground. It has been widely used in the laying and renovation of all municipal pipelines such as water supply and drainage pipelines, heat pipelines, oil pipelines, gas pipelines, power cable pipelines, and communication pipelines. The application of trenchless pipes has many advantages such as short construction period, simple and convenient construction, and reduced damage and adverse effects on the surrounding environment, traffic, buildings, greening and other public faciliti...

Claims

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Application Information

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IPC IPC(8): C09D175/06C09D7/62C09D7/20
CPCC09D175/06C09D7/62C09D7/20C08K2201/011C08K9/06C08K3/04
Inventor 李琴戈星陈修宽戈国城林文海
Owner 安徽明能电气有限公司
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