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Antimicrobial self-cleaning PPR pipe

A self-cleaning and pipe technology, applied in the field of pipes, can solve the problems that the antibacterial properties cannot be exerted normally, the antibacterial effect cannot be achieved, and the pipes have no self-cleaning function, etc., and the effect of lasting antibacterial effect and obvious shrinkage and expansion can be achieved.

Active Publication Date: 2019-01-22
CHONGQING GONGQI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pipes produced by these methods have no self-cleaning function. After the pipes are used for a long time, a large amount of dirt will adhere to the inner surface, thereby separating the flowing water in the pipe from the inner wall surface of the pipe, making the antibacterial performance unable to perform normally, and failing to achieve the desired effect. antibacterial effect

Method used

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  • Antimicrobial self-cleaning PPR pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] To make an antibacterial self-cleaning PPR pipe, including the pipe body, first prepare 880kg of random copolymerized polypropylene (PPR), 60kg of polyolefin elastomer (POE), nanosilica-loaded nano-silver antibacterial agent (nanosilver SiO 2 ) 20kg. Prepare tubing as follows.

[0038] 60kg of POE material and 6kg of nano-silver SiO 2 Melt blending first, and then melt blending with 880kg of PPR material, which can make the PPR blending material have more obvious shrinkage and expansion, and increase the coefficient of thermal expansion; then blend the blending material with the remaining 14kg of nano-silver SiO 2 Melt blending, which can make the PPR blended material have antibacterial properties; then put it into an extruder for extrusion granulation to obtain granular materials.

[0039] Put the granular material into the hopper of the pipe extruder, and replace the die mandrel of the pipe extruder with an arc-turned surface die mandrel in advance, and the arc-tur...

Embodiment 2

[0043] To make an antibacterial self-cleaning PPR pipe, including the pipe body, first prepare 890kg of random copolymerized polypropylene (PPR), 70kg of polyolefin elastomer (POE), nano-silica loaded nano-silver antibacterial agent (nanosilver SiO 2 ) 30kg. Prepare tubing as follows.

[0044] 70kg of POE material and 7.0kg of nano-silver SiO 2 Melt blending first, then melt blending with 890kg of PPR material, and then blending the blended material with 23.0kg nano-silver SiO 2 Melt blending; then put into an extruder for extrusion granulation to obtain granular materials.

[0045] Put the granular material into the hopper of the pipe extruder; and replace the mandrel of the pipe mold with a straight-rotating surface mandrel, which is to make the outer surface into a straight-rotation fold from the longitudinal direction Then set the mold temperature at 195°C, melt and extrude the PPR blended material to obtain a PPR pipe, and then pass it through a vacuum setting machine...

Embodiment 3

[0047] To make an antibacterial self-cleaning PPR pipe, including the pipe body, first prepare 900kg of random copolymerized polypropylene (PPR), 80kg of polyolefin elastomer (POE), nanosilica-loaded nano-silver antibacterial agent (nanosilver SiO 2 ) 40kg. Prepare tubing as follows.

[0048] Put POE material 80kg and 8kg nano silver SiO 2 Melt blending first, then melt blending with 900kg of PPR material, and then blending the blended material with 32kg of nano-silver SiO 2 Melt blending; then put into an extruder for extrusion granulation to obtain granular materials.

[0049] Add the granular material into the hopper of the pipe extruder, and the mandrel of the pipe mold in the extruder adopts a conventional smooth surface mandrel; then set the mold temperature to 205°C, and melt and extrude the PPR blended material. The PPR pipe is prepared, then shaped by a vacuum setting machine, and pulled out by a tractor after cooling to obtain an antibacterial self-cleaning PPR p...

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Abstract

The invention provides an antimicrobial self-cleaning PPR pipe, and belongs to the technical field of pipelines. A main material PPR for preparing a pipe body is modified and prepared, POE and nano-silver SiO2 are blended in the PPR material on the inner layer, the PPR blending material has antimicrobial performance and obvious shrinkage and expansion performance, the thermal expansion coefficientof the material is increased, when thermal expansion and cold shrinkage happen, and the shrinkage and expansion performance is also easily shown on the surface of the inner wall. In addition, a curing layer can be additionally arranged, the shrinkage and expansion phenomenon of the surface of the inner wall of the inner layer is more obvious, meanwhile, the inner wall of the inner layer can be designed into a wrinkle shape, especially an arc turn folded shape, when thermal expansion and cold shrinkage happen, the shrinkage and expansion phenomenon of the convex portion of the inner surface ofthe pipe body is more prominent, the change of the convex portion and the change of the concave portion are not synchronous, then dirt attached to the inner surface is gradually separated, self-cleaning is achieved, and the antimicrobial effect is kept for a long time.

Description

technical field [0001] The invention belongs to the technical field of pipes, in particular to an antibacterial self-cleaning PPR pipe. Background technique [0002] PPR plastic pipe is made of non-toxic, pressure-resistant, light-weight random copolymerized polypropylene material. It is mainly used in industrial and civil building cold and hot water pipe systems, heating systems, drinking water systems, etc. The inner wall of the PPR pipe is smooth, has a long service life and excellent corrosion resistance. In our daily life, tap water and direct drinking water will eventually enter the normal use process of users after passing through PP-R water supply pipes. Since PP-R water supply pipes will not be easily replaced after installation, a large number of bacteria and algae will easily grow on the pipe wall after a period of use, which will affect the performance of the pipe, shorten the service life of the pipe, and increase the maintenance cost; even these Bacteria and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/128F16L9/133F16L9/12F16L55/24
CPCF16L9/12F16L9/128F16L9/133F16L55/24
Inventor 王耀锋周刚汪进
Owner CHONGQING GONGQI TECH CO LTD
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