High-oxygen barrier property high-strength polyolefin heat conduction pipe and preparation method thereof

A technology of polyolefin and heat pipes, which is applied to tubular objects, other household appliances, applications, etc., can solve the problems of high cost and complex processing technology of oxygen-barrier polyolefin heat pipes, and achieve excellent environmental performance, oxygen barrier performance and heat conduction Improved performance, noticeable results

Active Publication Date: 2015-12-09
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome many problems such as complex processing technology and high cost of the existing oxygen-barrier polyolefin heat-conducting pipe, and provide a high-oxygen-barrier and high-strength polyolefin heat-conducting pipe and its preparation method, which can be formed by conventional twin-screw extrusion equipment Polyolefin heat-conducting pipe with excellent comprehensive performance

Method used

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  • High-oxygen barrier property high-strength polyolefin heat conduction pipe and preparation method thereof
  • High-oxygen barrier property high-strength polyolefin heat conduction pipe and preparation method thereof

Examples

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Embodiment 1

[0037] The present embodiment 1 comprises the following components in parts by weight: the polyolefin resin is 100 parts of high-density polyethylene HDPE, the graphene sheet is 0.5 parts of graphene oxide, and the compatibilizer is 1.5 parts of polyethylene glue Maleic anhydride, antioxidant 1010 of 0.1 parts, graphene oxide sheets are evenly distributed in the polyolefin resin in a circular shape with the central axis of the pipe as the center.

[0038] The preparation method steps are as follows:

[0039] S01, drying: 100 parts of HDPE, 0.5 parts of graphene oxide, 1.5 parts of polyethylene grafted maleic anhydride, 0.1 part of antioxidant 1010 were vacuum-dried at 80°C for 45 minutes;

[0040] S02, mixing: uniformly disperse and mix the dried HDPE, graphene oxide, polyethylene grafted maleic anhydride and antioxidant 1010 for 3 minutes at a speed of 500 rpm in a high mixer to obtain a mixture;

[0041] S03, granulation: put the mixture into a screw extruder to melt and pl...

Embodiment 2

[0046] The present embodiment 2 comprises the following components by weight: polyolefin resin is 100 parts of random copolymerized polypropylene PPR, graphene sheet is 0.1 part of thermally reduced graphene, compatibilizer is 0.3 part of poly Propylene is grafted with maleic anhydride, the antioxidant is 0.2 parts of antioxidant 1010, and the heat-reduced graphene sheets are evenly distributed in the polyolefin resin in a ring shape centered on the central axis of the pipe.

[0047] The preparation method steps are as follows:

[0048] S01, drying: 100 parts of PPR, 0.1 part of thermally reduced graphene, 0.3 part of polypropylene grafted maleic anhydride, and 0.2 part of antioxidant 1010 were vacuum-dried at 80° C. for 45 minutes;

[0049] S02, mixing: uniformly disperse and mix the dried HDPE, graphene oxide, polyethylene grafted maleic anhydride and antioxidant 1010 for 3 minutes at a speed of 500 rpm in a high mixer to obtain a mixture;

[0050] S03, granulation: put the...

Embodiment 3

[0055] The present embodiment 3 comprises the following components in parts by weight: the polyolefin resin is 100 parts of high-density polyethylene HDPE, the graphene sheet is 5 parts of graphene oxide, and the compatibilizer is 15 parts of polyethylene binder. Branch maleic anhydride, antioxidant are the antioxidant 1010 of 0.01 part;

[0056] The preparation method of Example 3 is the same as that of Example 1. The thermal conductivity of the prepared pipe is 0.87W / m·K, the hoop tensile strength is 69.5MPa, and the oxygen permeability coefficient is 0.096g·mm at 25°C 2 / (L·MPa).

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Abstract

The invention provides a high-oxygen barrier property high-strength polyolefin heat conduction pipe and a preparation method thereof. The high-oxygen resistance high-strength polyolefin heat conduction pipe comprises, by weight, 100 parts of polyolefin resin, 0.1-5 parts of graphene slice layers, 0.1-15 parts of a compatilizer and 0.01-0.2 parts of an anti-oxidant. The graphene slice layers are uniformly distributed in the polyolefin resin in a ring way around a pipe central axis as a center. Through use of the graphene slice layers and a rotary core rod mouth mold, a polyolefin crystallization degree is high, a lot of oriented crystals are formed and pipe mechanical properties, heat conduction and heatproof performances are obviously improved. The graphene slice layers are uniformly distributed in the pipe in a ring way so that graphene slice layer obstruction performances are greatly improved and thus the good oxygen barrier property is kept under the condition of a very small amount of an anti-oxidant.

Description

technical field [0001] The invention belongs to the field of plastic pipes and their preparation, in particular to a polyolefin heat-conducting pipe with high oxygen resistance and high strength and a preparation method thereof. Background technique [0002] Polyolefin heat pipe is a pipe made of polyethylene, polybutene and polyethylene copolymer resin as the matrix, which is directly extruded or mixed with high thermal conductivity inorganic powder. Compared with metal pipes, polyolefin heat-conducting pipes are light in weight, high in specific strength, corrosion-resistant, long in service life, good in flexibility, and low in installation and maintenance costs. , Heat pumps, radiator connections, industrial heat exchange pipes, fishery insulation pipes, etc. have important application prospects. [0003] Compared with polypropylene, polyethylene (PE) has better thermal conductivity (0.3-0.4W / m·K) and aging resistance, so it is often used as the matrix resin of heat pip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L23/12C08L23/14C08L23/20C08L51/06C08K3/04C08K5/134B29D23/00
CPCB29D23/001C08K2201/011C08L23/06C08L23/14C08L2201/14C08L2203/18C08L2207/062C08L51/06C08K3/04C08K5/1345
Inventor 陶四平李晟付锦锋李聪陈勇文李东刘振飞陈国雄
Owner TIANJIN KINGFA NEW MATERIAL
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