Oxygen-resistant geothermal pipe with high thermal conducting function and scale preventing function

A floor heating pipe and functional technology, applied in hot water central heating systems, heating methods, tubular objects, etc., can solve the problems of low heat conduction efficiency, roughness, and non-high temperature resistant pipe inner wall surface of oxygen barrier pipes, etc., and achieve thermal conductivity The effect of improving, not easy to scale, and improving thermal stability

Active Publication Date: 2017-05-10
TIANJIN ZHONGCAI PROFILES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention aims to propose an oxygen-resistant floor heating pipe with high thermal conductivity and anti-scaling function to solve the shortcomings of the oxygen-resistant pipe, such as low heat conduction efficiency, low temperature resistance, and rough surface of the inner wall of the pipe.

Method used

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  • Oxygen-resistant geothermal pipe with high thermal conducting function and scale preventing function

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Experimental program
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Effect test

Embodiment 1

[0023] The inner layer 1, the outer layer 5, the first adhesive layer 2 and the second adhesive layer 4 of the five-layer high thermal conductivity and anti-scaling functional oxygen-resistant floor heating pipe all use surface-modified graphene oxide, The graphene oxide is prepared by the following steps: disperse graphene oxide in DMF and ultrasonically disperse for 1 hour to obtain graphene oxide colloid, add organic amine to graphene oxide under mechanical stirring, and react at 90°C for 4 hours , and then washed with deionized water for 2-3 times, dried, ground and sieved to obtain modified graphene oxide.

[0024] Wherein: the inner layer 1 includes the following components by weight: modified graphene oxide: 0.5 parts, ethylene-tetrafluoroethylene copolymer: 5 parts, PERT: 100 parts; the outer layer 5 includes the following parts by weight Components: modified graphene oxide: 1 part, PERT: 100 parts; the first adhesive layer 2 and the second adhesive layer 4 include the...

Embodiment 2

[0028] The preparation of the modified graphene used in this example is the same as that in Example 1.

[0029] Wherein: the inner layer 1 includes the following components by weight: modified graphene oxide: 1 part, ethylene-tetrafluoroethylene copolymer: 10 parts, PERT: 100 parts; the outer layer 5 includes the following parts by weight Components: modified graphene oxide: 5 parts, PERT: 100 parts; the first adhesive layer 2 and the second adhesive layer 4 include the following components in parts by weight: modified graphene oxide : 0.8 parts, hot melt adhesive: 100 parts.

[0030] The oxygen-resistant floor heating pipe adopts a five-layer co-extrusion process to prepare a pipe with a specification of D20S4.0, and its temperature control and speed control are similar to the existing technology.

[0031] The thermal conductivity of the prepared five-layer high thermal conductivity and anti-scaling functional oxygen-resistant floor heating pipe is 0.98 W / m·K, and the inner ...

Embodiment 3

[0033] The inner layer 1, the outer layer 5, the first adhesive layer 2 and the second adhesive layer 4 of the five-layer high thermal conductivity and anti-scaling functional oxygen-resistant floor heating pipe all use surface-modified graphene oxide, The graphene oxide is prepared by the following steps: disperse graphene oxide in absolute ethanol and disperse ultrasonically for 1 hour to obtain graphene oxide colloid, add silane coupling agent KH560 to graphene oxide under mechanical stirring, and heat at 60°C After reacting for 4 hours, wash with deionized water for 2-3 times, dry, grind and sieve to obtain modified graphene oxide.

[0034] Wherein: the inner layer 1 includes the following components by weight: modified graphene oxide: 0.5 parts, ethylene-tetrafluoroethylene copolymer: 5 parts, PERT: 100 parts; the outer layer 5 includes the following parts by weight Components: modified graphene oxide: 1 part, PERT: 100 parts; the first adhesive layer 2 and the second adh...

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Abstract

The invention provides an oxygen-resistant geothermal pipe with a high thermal conducting function and a scale preventing function. The oxygen-resistant geothermal pipe comprises an inner layer, an outer layer, a bonding glue layer and an oxygen-resistant layer, wherein the inner layer comprises, by weight, 0-1 part of modified oxidized graphene, 5-10 parts of fluoropolymers and 100 parts of polymer matrixes, the outer layer comprises, by weight, 1-10 parts of the modified oxidized graphene and 100 parts of the polymer matrixes, and the bonding glue layer comprises, by weight, 0.5-0.8 part of modified oxidized graphene and 100 parts of hot-melt glue. The oxygen-resistant geothermal pipe with the high thermal conducting function and the scale preventing function have the advantages that a thermal conducting coefficient is increased largely, thermostability of the bonding glue layer is enhanced, and by means of adding the fluoropolymers in the inner layer, the inner wall of the pipe is enabled to be smooth and less prone to scaling.

Description

technical field [0001] The invention belongs to the field of floor heating pipes for ground radiant heating, in particular to an oxygen-resistant floor heating pipe with high thermal conductivity and anti-scale function. Background technique [0002] In the floor radiant heating system, the materials of the pipes mainly used are PE-X, PERT, PB, etc., while the ordinary plastic pipes used in the floor heating system on the market currently have a certain degree of oxygen permeability. In the heating system, the oxygen in the water will seriously corrode the boilers and radiators in the heating system; at the same time, when oxygen enters the pipeline, bacteria will grow, and finally biological slime will be formed on the pipe wall, which will greatly reduce the heat conduction efficiency of the pipeline. As a result, floor heating pipes with an oxygen barrier layer appeared on the market. [0003] With the continuous improvement of people's requirements for heating systems, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K9/04C08K3/04C09J201/00C09J11/04B32B1/08B32B27/08B32B27/18B32B27/30B32B27/32B32B7/12B32B33/00F24D3/14
CPCB32B1/08B32B7/12B32B27/08B32B27/18B32B27/306B32B27/32B32B33/00B32B2250/246B32B2264/108B32B2270/00B32B2307/302B32B2307/308B32B2307/7244B32B2597/00C08K3/04C08K9/04C08L23/06C08L2203/18C08L2205/02C09J11/04C09J201/00F24D3/146C08L23/0892
Inventor 王景旺高元杰谢文杰
Owner TIANJIN ZHONGCAI PROFILES
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