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A three-layer co-extruded antibacterial pp-r water supply pipe and preparation method thereof

A PP-R, three-layer co-extrusion technology, used in pipes, rigid pipes, mechanical equipment, etc., can solve the problems of easy reduction of inorganic antibacterial agents and poor stability of organic antibacterial agents, so as to reduce the precipitation of inorganic ions and improve the antibacterial properties. Impact performance, good impact stability effect

Active Publication Date: 2022-01-28
GUANGDONG LIANSU TECH INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of poor stability of organic antibacterial agents in the prior art, easy reduction of mechanical properties of pipes by inorganic antibacterial agents, and ion precipitation, and provide a three-layer co-extrusion with good antibacterial performance and strong mechanical properties. Antibacterial PP-R water supply pipe

Method used

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  • A three-layer co-extruded antibacterial pp-r water supply pipe and preparation method thereof
  • A three-layer co-extruded antibacterial pp-r water supply pipe and preparation method thereof
  • A three-layer co-extruded antibacterial pp-r water supply pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0027] Embodiments 1-4 A kind of three-layer co-extruded antibacterial PP-R water supply pipe

[0028] The three-layer co-extruded antibacterial PP-R water supply pipe is made of raw materials in Table 1 and parts by weight thereof:

[0029] Table 1 Embodiment 1~4 three-layer co-extruded antibacterial PP-R water supply pipe raw material and parts by weight

[0030]

[0031] Preparation:

[0032] Stir and mix the raw materials of the antibacterial inner layer, impact-resistant middle layer and protective outer layer in the barrel respectively for 2 minutes. Using a three-layer co-extrusion die, the main extruder extrudes the impact-resistant middle layer, and the first co-extrusion The auxiliary machine extrudes the antibacterial inner layer, the second co-extrusion auxiliary machine extrudes the protective outer layer, and the third co-extrusion auxiliary machine extrudes the color stripes. Under the condition of 195-210°C, the compound co-extrusion is carried out, and the...

experiment example 1

[0033] Experimental example 1 Effect of anti-scouring agent on anti-scouring property of water supply pipe

[0034] Referring to Example 1, three-layer co-extruded antibacterial PP-R water supply pipe samples were prepared by using different amounts of anti-shock agents. With reference to the national standard GB / T 18743-2002, the test conditions were changed to a more stringent test temperature of -5°C. The hammer energy is 15J, and the anti-shock performance of the water supply pipe sample is measured, and the results are shown in Table 1.

[0035] Table 1 Effect of anti-scourrence agent on the anti-scourability of water supply pipes

[0036] serial number Anti-impact agent (parts) Impact resistance (damage rate%) 1 5 5 2 7 2 3 10 0 4 13 0 5 15 0

[0037] It can be seen from Table 1 that when the amount of anti-impact agent added is 10-15 parts, the damage rate is 0%, and the impact resistance is better; based on the purpose o...

experiment example 2

[0038] Experimental example 2 Effect of antibacterial agent on antibacterial and hygienic performance of water supply pipe

[0039] With reference to Example 1, three layers of co-extruded antibacterial PP-R water supply pipe templates were prepared using different amounts of antibacterial agents, and the antibacterial performance (with reference to the national standard GB / T 31402-2015) and hygienic performance (with reference to the national standard GB) of the water supply pipe samples were measured. / T 17219-2001), see Table 2 for the results.

[0040] Table 2 The effect of antibacterial agents on the antibacterial and hygienic properties of water supply pipes

[0041] serial number Antibacterial agent (parts) Antibacterial (%) Sanitation (Ag content mg / L) 1 1 90 <0.005

[0042] It can be seen from Table 2 that when the amount of antibacterial agent added is 1 to 5 parts, the antibacterial performance reaches 99%, and the silver content of the hygien...

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Abstract

The invention belongs to the technical field of water supply pipe materials, and in particular relates to a three-layer co-extruded antibacterial PP‑R water supply pipe and a preparation method thereof. The water supply pipe utilizes the synergistic effect of anti-shock agent, anti-bacterial agent and the thickness ratio of each layer. Under specific proportioning conditions, it can achieve 99% anti-bacterial performance and good impact stability, and reduce the precipitation of inorganic ions in the anti-bacterial agent. Improve the impact resistance, solve the problem of the reduction of mechanical properties existing in the addition of inorganic antibacterial agents; at the same time, the total thickness of the prepared antibacterial inner layer and the middle anti-impact layer of the water supply pipe is small, which can significantly reduce the manufacturing cost of the water supply pipe. Huge economic benefits.

Description

technical field [0001] The invention belongs to the technical field of water supply pipe materials. More specifically, it relates to a three-layer co-extruded antibacterial PP-R water supply pipe and a preparation method thereof. Background technique [0002] With the continuous development and progress of society and the improvement of living standards, people pay more and more attention to improving the quality of life and improving the living environment, especially the awareness of their own health is gradually increasing. Therefore, people's requirements for how to effectively prevent and control various harmful viruses and germs, maintain good health, and clean living environment are constantly increasing. It meets general hygiene and health requirements, and can kill harmful bacteria in water. [0003] PP-R water supply pipe is a new type of pipe made of random copolymerized polypropylene resin (PPR) as the main raw material, which is extruded and processed. It can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/12C08L23/12C08L23/08C08K9/12C08K3/08B29C48/92B29C48/09B29C48/18
CPCF16L9/121C08L23/12B29C48/92B29C48/09B29C48/18C08L2203/18C08K2003/0806C08K2201/011B29C2948/92704B29C2948/9258C08L23/0815C08K9/12C08K3/08
Inventor 王梅高聪谭社曙张慰峰
Owner GUANGDONG LIANSU TECH INDAL
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