Fiber-reinforced random copolymerized polypropylene composite pipe of β-crystal form and preparation method thereof

A random copolymerization and fiber-reinforced technology, which is applied in the direction of chemical instruments and methods, tubular articles, synthetic resin layered products, etc., can solve problems such as hidden quality problems and delamination, and achieve improved pressure resistance, good hygienic performance, and solution The effect of low temperature brittleness problems

Active Publication Date: 2021-05-28
SHANGHAI WEIXING NOVEL BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there are some products in the domestic market, such as steel-plastic composite pipes, plastic-lined steel pipes, stainless steel pipes and other products. layer phenomenon
Thin-walled stainless steel pipes, the existing problem is the reliability of the connection. The connection between the pipe and the pipe fittings is mainly carried out by pressing, and the sealing performance depends on the internal EPDM rubber ring. However, the EPDM material is now used in the hot water field. The maximum lifespan is 20 years, how to solve the follow-up problem becomes the biggest quality hidden danger

Method used

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  • Fiber-reinforced random copolymerized polypropylene composite pipe of β-crystal form and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Please see attached figure 1 , a fiber-reinforced β-crystalline random copolymer polypropylene composite pipe is characterized in that it comprises an outer layer 3, an intermediate layer 2 and an inner layer 1, and an intermediate layer is arranged between the outer layer and the inner layer; the material of the outer layer It is β-crystal random copolymerized polypropylene, the material of the middle layer is β-crystal random copolymerized polypropylene reinforced by silica fiber, and the material of the inner layer is β-crystal random copolymerized polypropylene containing antibacterial masterbatch.

[0073] The material of the outer layer of the pipe is β-crystal random copolymerized polypropylene, which ensures the hot-melt connection of the plastic pipe.

[0074] The material of the middle layer of the pipe is β-crystal random copolymerized polypropylene particles reinforced by silica fiber, the mass fraction of silica fiber in the material of the middle layer is ...

Embodiment 2

[0136] A fiber-reinforced random copolymer polypropylene composite pipe of β crystal form is characterized in that it comprises an outer layer, an intermediate layer and an inner layer, and an intermediate layer is arranged between the outer layer and the inner layer; the material of the outer layer is β crystal form The material of the middle layer is β-crystal random copolymer polypropylene reinforced by silica fiber, and the material of the inner layer is β-crystal random copolymer polypropylene containing antibacterial masterbatch.

[0137] The material of the outer layer of the pipe is β-crystal random copolymerized polypropylene, which ensures the hot-melt connection of the plastic pipe.

[0138] The material of the middle layer of the pipe is β-crystal random copolymerized polypropylene particles reinforced by silica fiber, the mass fraction of silica fiber in the material of the middle layer is 20-28%, and the length of silica fiber is 4-8 mm. The middle layer of the ...

Embodiment 3

[0188] Please see attached figure 1 , a fiber-reinforced β-crystalline random copolymer polypropylene composite pipe, characterized in that it comprises an outer layer, an intermediate layer and an inner layer, and an intermediate layer is arranged between the outer layer and the inner layer; the material of the outer layer is β-crystalline Type random copolymer polypropylene, the material of the middle layer is silica fiber reinforced β crystal random copolymer polypropylene, and the material of the inner layer is β crystal random copolymer polypropylene containing antibacterial masterbatch.

[0189] The material of the outer layer of the pipe is β-crystal random copolymerized polypropylene, which ensures the hot-melt connection of the plastic pipe.

[0190] The material of the middle layer of the pipe is β-crystal random copolymer polypropylene particle reinforced by silica fiber, the mass fraction of the silica fiber in the material of the middle layer is 24%, and the lengt...

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Abstract

The invention relates to a fiber-reinforced β-crystal random copolymerized polypropylene composite pipe and a preparation method, which is characterized in that it comprises an outer layer, an intermediate layer and an inner layer, and an intermediate layer is arranged between the outer layer and the inner layer; the outer layer It is β-crystal random copolymerized polypropylene, the middle layer is β-crystal random copolymerized polypropylene reinforced by silica fiber, and the inner layer is β-crystal random copolymerized polypropylene containing antibacterial masterbatch. The fiber-reinforced layer resin of the present application adopts β-crystal random copolymerized polypropylene, which improves the low-temperature impact resistance of the pipe and the pressure resistance of the pipe; the addition of antibacterial masterbatch improves the hygienic performance of the pipe. The application can be used for cold and hot water piping systems in buildings, main risers in buildings, air conditioning piping systems and other industrial pipes.

Description

【Technical field】 [0001] The invention relates to the technical field of pipes, in particular to a fiber-reinforced β-crystal random copolymerized polypropylene composite pipe and a preparation method thereof. 【Background technique】 [0002] Since plastic pipes replaced cast iron pipes and PVC water supply pipes in 1999, PP-R pipes have rapidly occupied the entire indoor water supply pipe market and become the mainstream product in the market. According to incomplete statistics, in the entire indoor water supply pipeline market, PP-R accounts for more than 80%, but at the same time, some problems have also been exposed. For example, the application of products in high-temperature fields, occasional tube bursts, and the low-temperature brittleness of products in winter have become inevitable topics. For some special fields, a product is urgently needed as a substitute to meet the needs of high temperature and high pressure fields. [0003] At present, there are some product...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B1/08B32B27/32B32B27/06B32B27/18B32B27/20C08L23/14C08L51/06C08K7/10C08K9/12C08K3/22C08K7/24C08K3/04
CPCB32B1/08B32B27/08B32B27/18B32B27/20B32B27/32B32B2262/10B32B2307/558B32B2307/7145B32B2597/00C08K2003/2241C08K2003/2248C08L23/14C08L2203/18C08L51/06C08K7/10C08K9/12C08K3/22C08K7/24C08K3/042
Inventor 王坤鹏薛冠
Owner SHANGHAI WEIXING NOVEL BUILDING MATERIAL
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