CN216813208U

CN216813208U - High temperature resistant, hinder oxygen and antibiotic anti-scaling PPR composite pipe

Info

Publication number: CN216813208U
Application number: CN202122995366.5U
Authority: CN
Inventors: 范桃
Original assignee: Shanghai Weixing New Building Materials Co Ltd
Current assignee: Shanghai Weixing New Building Materials Co Ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-06-24
Anticipated expiration: 2031-12-01

Abstract

The utility model relates to a high temperature resistant, oxygen resistant, antibacterial and anti-scaling PPR composite pipe, which has a five-layer structure, wherein the inner layer is made of a heat-resistant high-density polyethylene material with antibacterial and anti-scaling functions, the second layer is made of a high temperature resistant hot melt adhesive material, the third layer is made of an ethylene vinyl alcohol oxygen resistant material, the fourth layer is made of a high temperature resistant hot melt adhesive material, and the fifth layer is made of a glass fiber polypropylene material. The utility model has the advantages that: in the novel PP-R composite pipe, the inner plastic layer adopts modified polyethylene resin with high temperature resistance, and the outer layer adopts random copolymerization polypropylene resin with high temperature resistance; the effects of bacteriostasis and scale prevention on the inner surface of the PP-R composite pipe can be realized by introducing the nano antibacterial master batch and the anti-scaling master batch into the matrix; meanwhile, a high-temperature-resistant hot melt adhesive is used between the oxygen-resistant layer and the inner and outer plastic layers, so that the overall high-temperature resistance of the PP-R composite pipe is further improved. The application can be applied to the preparation of building pipelines, in particular to a hot water conveying pipe with the requirements of high temperature resistance and pipeline cleaning.

Description

High temperature resistant, hinder oxygen and antibiotic anti-scaling PPR composite pipe

[ technical field ] A

The utility model relates to the technical field of pipes, in particular to a novel high-temperature-resistant, oxygen-resistant, antibacterial and anti-scaling PPR composite pipe

[ background ] A method for producing a semiconductor device

The PP-R pipe is a popular hot water conveying pipe in the market at present, is light and durable, the middle EVOH oxygen barrier layer can block most of oxygen from permeating, and breeding of microorganisms and algae is reduced. The conventional PP-R pipe, which is made of PP-R resin material, has a heat resistance of generally 70 ℃ or less, and thus is more applied to a hot and cold water delivery system in daily life. The utility model aims to improve the high-temperature resistance of the pipeline, the inner layer resin is changed into heat-resistant polyethylene (PE-RT), and the high-temperature-resistant hot melt adhesive is added, so that the application of the PP-R composite pipe in the field of heating and ventilation pipelines is expanded.

The PP-R pipe is widely applied to the delivery of cold and hot water in life, and the metal parts of the pipe fittings and valves in the delivery pipeline can generate oxidation corrosion after long-term water supply. The hot water pipeline inner wall scaling causes mainly have two factors: firstly, the roughness of the inner surface of the pipe is large, so that scale is easy to adhere to the pipe, the flow area in the pipe is continuously reduced along with the prolonging of the service life of the pipe, and the water flow is continuously reduced; the pipe has no self-cleaning and bacteria killing functions, and the inner wall of the used pipe becomes a bacteria growing place and scales due to the pollution of water sources, the backward filtering process of water works and the obsolescence of pipe networks of the water works. If the heating pipeline with scales is not cleaned in time, the pipeline can be blocked, the heating experience is reduced, the energy consumption is increased, and the potential safety hazard is greatly caused. In order to effectively reduce the scale formation on the inner wall of the pipeline, the roughness of the inner surface of the pipe needs to be reduced, and the smoother the inner wall of the heating pipe is, so that the scale is more difficult to adhere to the heating pipe. If the pipeline has the function of killing bacteria, the scaling time can be delayed, so that the cleaning period of the pipeline is prolonged. The present invention is directed to reducing the occurrence of fouling from both of these factors.

[ Utility model ] content

The utility model aims to overcome the defects of the prior art and provides a PPR composite pipe which is high temperature resistant, oxygen resistant, antibacterial and anti-scaling.

The utility model is realized by the following technical scheme:

the utility model provides a high temperature resistant, hinder oxygen and antibiotic anti-scaling PPR composite pipe, it contains five layer structures, is from inside to outside in proper order: the first layer is an antibacterial anti-scaling high-temperature-resistant plastic inner layer, the second layer is a high-temperature-resistant hot melt adhesive bonding layer, the third layer is an intermediate oxygen barrier layer-EVOH layer, the fourth layer is a high-temperature-resistant hot melt adhesive bonding layer, and the fifth layer is a high-strength high-temperature-resistant plastic outer layer.

The inner layer of the antibacterial anti-scaling high-temperature-resistant plastic accounts for 25-30% of the total wall thickness.

The antibacterial, antiscale and high temperature resistant plastic inner layer is made of heat resistant polyethylene (PE-RT) and antibacterial, antiscale and modified materials.

The antibacterial and antiscaling modified material is nanometer antibacterial agglomerate and antiscaling agglomerate.

The nano antibacterial master batch is prepared by adding one or more of nano copper powder, nano silver, copper or zinc ion antibacterial agents into a matrix resin material, mixing and granulating.

The anti-scaling master batch is prepared by adding one or more of polytetrafluoroethylene fine powder, siloxane copolymer and silicone lubricant into a matrix resin material, mixing and granulating.

The third layer is an intermediate oxygen-resistant layer-EVOH layer, and hot melt adhesive is used for ensuring the adhesiveness between the EVOH layer and the inner (outer) layer of the plastic layer on the second layer and the fourth layer through co-extrusion processing.

The second layer and the fourth layer of the pipe are high-temperature-resistant hot melt adhesive bonding layers, and the hot melt adhesive matrix resin is made of high-isotacticity polyolefin and has a thickness within 0.2 mm.

And an EVOH layer which accounts for 5-12% of the total wall thickness.

The outer layer of the high-strength high-temperature-resistant plastic is prepared by adding silicon dioxide glass fiber into a PP-R resin material serving as a substrate, and accounts for 50-70% of the total wall thickness

The outer layer is made of high-temperature-resistant polyolefin resin and random copolymer polypropylene (PP-R), has good creep resistance at high temperature, and accounts for 50-70% of the whole wall thickness.

The middle layer adopts an ethylene vinyl alcohol (EVOH) oxygen barrier layer, and accounts for 5-12% of the total wall thickness.

Compared with the prior art, the technical advantage of this application lies in:

the glue layer adopts a high-temperature resistant hot melt adhesive which is a polyolefin resin maleic anhydride graft, and the matrix resin of the hot melt adhesive needs to adopt a polyolefin material with high isotacticity and has higher thermal deformation temperature, so that the high-temperature resistant performance of the product is ensured, and the thickness of the glue layer is 0.3 mm.

The utility model systematically solves the problems of high temperature resistance, oxygen resistance, antibiosis and scaling prevention of the PP-R pipe.

[ description of the drawings ]

FIG. 1 is a sectional view of a PPR composite pipe with high temperature resistance, oxygen resistance, antibacterial property and anti-scaling property:

from inside to outside, the reference numbers in the drawings are respectively: 1. a first layer, 2, a second layer, 3, a third layer, 4, a fourth layer, 5, a fifth layer.

[ detailed description ] embodiments

The following is a specific implementation of a high temperature resistant, oxygen resistant, antibacterial and anti-scaling PPR composite pipe.

Example 1

With reference to fig. 1, a high temperature resistant, oxygen resistant, antibacterial and anti-scaling PPR composite pipe is characterized in that the pipe is composed of five layers of structures, which are from inside to outside: the first layer 1 is a high-temperature-resistant plastic inner layer added with nano antibacterial master batches and anti-scaling master batches, the second layer 2 is a high-temperature-resistant hot melt adhesive bonding layer, the third layer 3 is an EVOH oxygen barrier layer, the fourth layer 4 is a high-temperature-resistant hot melt adhesive bonding layer, and the fifth layer 5 is a high-temperature-resistant plastic outer layer.

The high-temperature resistant plastic inner layer and the middle EVOH oxygen barrier layer are connected through a high-temperature resistant hot melt adhesive layer; the middle EVOH oxygen-resistant layer and the high-temperature-resistant plastic outer layer are connected through a high-temperature-resistant hot melt adhesive layer.

A PPR composite pipe with high temperature resistance, oxygen resistance, antibiosis and anti-scaling is formed by a multilayer co-extrusion technology.

The inner layer of the high-temperature resistant plastic is added with the nano antibacterial master batch and the anti-scaling master batch, the matrix material is second-generation PE-RT, and the high-temperature resistant plastic has better creep resistance at high temperature, and accounts for 25-30% of the whole wall thickness.

The high-temperature-resistant hot melt adhesive bonding layer is a polyolefin resin maleic anhydride graft, the hot melt adhesive matrix resin is made of high-isotacticity polyolefin material and has high thermal deformation temperature, so that the high-temperature-resistant performance of the product is ensured, and EVOH in the middle of the glue layer with the thickness of 0.2mm is used for oxygen resistance and accounts for 5-12% of the whole wall thickness.

The outer layer of the high-temperature resistant plastic and the matrix material PP-R have better creep resistance at high temperature, and account for 50-70% of the whole wall thickness.

The utility model provides a high temperature resistant, hinder oxygen and antibiotic anti-scaling PPR composite pipe, by interior to exterior in proper order: the first time is a high-temperature resistant plastic inner layer added with nano antibacterial master batches and anti-scaling master batches, the second layer is a high-temperature resistant hot melt adhesive bonding layer, the third layer is an EVOH oxygen barrier layer, the fourth layer is a high-temperature resistant hot melt adhesive bonding layer, and the fifth layer is a high-temperature resistant plastic outer layer. The pipe adopts a five-layer co-extrusion technology, and the inner and outer layer plastics, the middle oxygen-resistant layer and the second three-layer hot melt adhesive are simultaneously extruded and combined into a whole through five extruders.

Claims

1. The utility model provides a high temperature resistant, hinder oxygen and antibiotic anti-scaling PPR composite pipe which characterized in that, it contains five layer structure, is from inside to outside in proper order: the first layer is an antibacterial anti-scaling high-temperature-resistant plastic inner layer, the second layer is a high-temperature-resistant hot melt adhesive bonding layer, the third layer is an intermediate oxygen barrier layer-EVOH layer, the fourth layer is a high-temperature-resistant hot melt adhesive bonding layer, and the fifth layer is a high-strength high-temperature-resistant plastic outer layer.

2. The PPR composite pipe with high temperature resistance, oxygen resistance, antibiosis and scale prevention as claimed in claim 1, wherein the inner layer of the bacteriostatic, antiscale and high temperature resistant plastic accounts for 25-30% of the total wall thickness.

3. The PPR composite pipe with high temperature resistance, oxygen barrier, antibacterial property and scale prevention as claimed in claim 1, wherein the third layer is an intermediate oxygen barrier layer-EVOH layer, and hot melt adhesive is used for ensuring the adhesiveness between the EVOH layer and the plastic layer or between the EVOH layer and the plastic layer through co-extrusion processing in the second layer and the fourth layer.

4. The PPR composite pipe with high temperature resistance, oxygen resistance, bacteria resistance and scale formation as claimed in claim 1, wherein the second layer and the fourth layer of the pipe are high temperature resistant hot melt adhesive bonding layers, and the hot melt adhesive matrix resin is made of polyolefin with high isotacticity and has a thickness within 0.2 mm.

5. The PPR composite pipe with high temperature resistance, oxygen barrier, antibacterial property and anti-scaling property as claimed in claim 1, wherein the EVOH layer accounts for 5-12% of the total wall thickness.

6. The PPR composite pipe with high temperature resistance, oxygen resistance, antibacterial property and anti-scaling property as claimed in claim 1, wherein the outer layer of high-strength high-temperature-resistant plastic accounts for 50-70% of the total wall thickness.