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High temperature and high pressure tempered pp‑rct composite pipe

A PP-RCT, composite pipe technology, applied in the direction of pipes, rigid pipes, chemical instruments and methods, etc., can solve the problems of easy deformation, insufficient pressure resistance, deformation, etc.

Active Publication Date: 2017-09-26
刘志光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently commercially available polyolefin pipes often have some problems: for example, 1. Insufficient pressure resistance; 2. Easy to deform; 3. Short service life; 4. Not corrosion-resistant and other shortcomings
In addition, most of the commercially available pipes do not have the advantages of high pressure resistance, high temperature resistance and long service life at the same time. For example, most pipes cannot be used for a long time in a high temperature environment of 95°C, and will deform at high temperatures

Method used

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  • High temperature and high pressure tempered pp‑rct composite pipe
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  • High temperature and high pressure tempered pp‑rct composite pipe

Examples

Experimental program
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Effect test

Embodiment approach

[0044] As a preferred embodiment, the thickness ratio of the PP-RCT inner layer to the outer layer is (1-10):10.

[0045] As a preferred embodiment, in the present invention, the PP-RCT resin is treated with plasma.

[0046] Low-temperature plasma contains a large number of active particles such as electrons, excited atoms and molecules, and free radicals. These active particles cause physical and chemical reactions such as etching, oxidation, reduction, cracking, cross-linking, and polymerization on the surface of the material, thereby realizing the surface of the material. modification. Since the energy of particles in low-temperature plasma is generally several to tens of electron volts, which is greater than the bonding energy of polymer materials from several to tens of electron volts, it is completely possible to break the bonding bonds of organic macromolecular materials and form new ones. bond; but its energy is much lower than that of high-energy radiation, so surfac...

Embodiment 1

[0120] Three-layer pipe: outer layer PP-RCT; inner layer: PP-RCT; middle layer: silicone fiber / carbon fiber / basalt fiber / PP-RCT blend, the grade of PP-RCT is RA7050, purchased from Borealis . Silica fiber was purchased from Nanjing Gogoya Fiber Glass Development Co., Ltd., and carbon fiber was purchased from Zhongfu Shenying Carbon Fiber Co., Ltd., product model: 12K raw silk. Basalt fibers were purchased from Zhejiang Shijin Basalt Fiber Co., Ltd.

[0121] S1: Drying: drying 1 part by weight of silica fiber, 5 parts by weight of carbon fiber, 1 part by weight of basalt fiber, and 100 parts by weight of PP-RCT resin at 50 ° C for 30 minutes;

[0122] S2: Mixing: uniformly disperse and mix the dried silicone fiber, carbon fiber, basalt fiber, and PP-RCT resin in a high-mixer for 5 minutes at a speed of 500 rpm in step S1 to obtain a mixture;

[0123] S3: Pelletizing: adding the mixture prepared in step S2 into a granulation extruder, plasticizing, extruding, cooling, and pell...

Embodiment 2

[0133] Three-layer pipe: outer layer PP-RCT; inner layer: PP-RCT; middle layer: silicone fiber / carbon fiber / basalt fiber / PP-RCT blend, the grade of PP-RCT is RA7050, purchased from Borealis . Silica fiber was purchased from Nanjing Gogoya Fiber Glass Development Co., Ltd., and carbon fiber was purchased from Zhongfu Shenying Carbon Fiber Co., Ltd., product model: 12K raw silk. Basalt fibers were purchased from Zhejiang Shijin Basalt Fiber Co., Ltd.

[0134] S1: drying: drying 20 parts by weight of silicone fiber, 0.1 part by weight of carbon fiber, 10 parts by weight of basalt fiber, and 100 parts by weight of PP-RCT resin at 50 ° C for 30 minutes;

[0135] S2: Mixing: uniformly disperse and mix the dried silicone fiber, carbon fiber, basalt fiber, and PP-RCT resin in a high-mixer for 5 minutes at a speed of 500 rpm in step S1 to obtain a mixture;

[0136] S3: Pelletizing: adding the mixture prepared in step S2 into a granulation extruder, plasticizing, extruding, cooling, a...

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Abstract

The invention provides a high-temperature and high-pressure resistant tempered PP-RCT composite pipe. The PP-RCT composite pipe at least comprises a PP-RCT outer layer, a silicon oxygen fiber / carbon fiber / basalt fiber / PP-RCT mixture intermediate layer and a PP-RCT inner layer. The PP-RCT composite pipe has such advantages as high strength, high-temperature resistance, high-pressure resistance, corrosion resistance, chemical reagent resistance, low linear expansion coefficient and long service life.

Description

technical field [0001] The invention relates to a pipe material, in particular to a high temperature and high pressure resistant tempered PP-RCT composite pipe material. Background technique [0002] At present, steel pipes are widely used in electric power, metallurgy, coal, petroleum, chemical industry, machinery and other industries. The commonly used steel pipes include ceramic composite steel pipes, polymer composite steel pipes and rubber-lined composite steel pipes. These steel pipes have some defects, such as ceramic The inner surface of the composite steel pipe is less dense, the acid and alkali resistance of the welding area is relatively weak, the polymer composite steel pipe has poor wear resistance and temperature resistance, and the rubber-lined composite steel pipe cannot be used at high temperatures. [0003] Polyolefin pipes are made of polyolefin resins such as polyethylene, polybutene and polypropylene, which are directly extruded or extruded with certain ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/14C08L23/14C08K13/06C08K9/04C08K7/10C08K7/06B32B1/08B32B27/32B32B27/04B32B9/04
CPCB32B1/08B32B9/04B32B27/32B32B2250/03B32B2250/242B32B2250/40B32B2260/021B32B2260/046B32B2307/306B32B2307/50C08K7/06C08K7/10C08K9/08C08K2201/014C08L23/14F16L9/14C08L83/04C08K13/06
Inventor 刘志光
Owner 刘志光