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Thermal-conductivity nano-composite material and preparation method thereof

A thermally conductive composite material and composite material technology, applied in the field of nano thermally conductive composite materials, can solve the problems of unsatisfactory thermal conductivity, cracking resistance and impact resistance, and the inability to use heat exchange coil materials for ice storage devices, etc. Excellent performance, good mechanical properties, small size effect

Active Publication Date: 2012-08-01
HANGZHOU RUNPAQ ENVIRONMENT EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CoolPolymers, LNP Engineering Plastics, Peregrine Industries, and RTP have successively launched new thermally conductive materials developed by them, but their thermal conductivity, crack resistance, and impact resistance are not ideal, and they cannot be used as ice storage devices for heat exchange. Coil Material Use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] First, add polypropylene accounting for 10% of the total weight of the required masterbatch and impact-resistant modifier POE accounting for 30% of the total weight of the required masterbatch to the nano-calcium carbonate accounting for 58.5% of the total weight of the required masterbatch. , 0.3% of the NDZ titanate coupling agent (0.5% of the weight of the nanomaterial) accounting for 0.3% of the total weight of the masterbatch required to be prepared, and 1.2% of the industrial white oil (2% of the weight of the nanomaterial) of the total weight of the masterbatch required %), followed by surface treatment. The surface treatment temperature is 40°C, and the treatment time is 8 minutes. Then put the material in a high-speed mixer and stir for 10 minutes, then melt and extrude through a co-rotating twin-screw extruder, pelletize, cool, and spin dry in a centrifuge to make masterbatches.

[0047]In the polypropylene which accounts for 8.5% of the total weight of the n...

Embodiment 2

[0051] First, add polyethylene accounting for 25% of the total weight of the required masterbatch to the nano-calcium carbonate accounting for 47% of the total weight of the required masterbatch, and an impact-resistant modification additive POE accounting for 25% of the total weight of the required masterbatch. , NDZ titanate coupling agent accounting for 1% of the total weight of the masterbatch to be prepared (2.1% of the weight of the nanomaterial), industrial white oil accounting for 2% of the total weight of the masterbatch required to be prepared (4.3% of the weight of the nanomaterial) %), followed by surface treatment. The surface treatment temperature is 40°C, and the treatment time is 10 minutes. Then put the material in a high-speed mixer and stir for 8 minutes, then melt and extrude through a co-rotating twin-screw extruder, pelletize, cool, and dry in a centrifuge to make masterbatches.

[0052] Add the masterbatch accounting for 10% of the total weight of the n...

Embodiment 3

[0056] First, add polyethylene accounting for 30% of the total weight of the required masterbatch to the nano-calcium carbonate accounting for 40% of the total weight of the required masterbatch, and an impact-resistant modifier POE accounting for 28.5% of the total weight of the required masterbatch. , NDZ titanate coupling agent accounting for 1.1% of the total weight of the masterbatch to be prepared (2.8% of the weight of the nanomaterial), accounting for 0.4% of the total weight of the masterbatch to be prepared (1% of the weight of the nanomaterial) %), followed by surface treatment. The surface treatment temperature is 30°C, and the treatment time is 15min. Then put the material in a high-speed mixer and stir for 12 minutes, then melt and extrude through a co-rotating twin-screw extruder, pelletize, cool, and dry in a centrifuge to make masterbatches.

[0057] In the polyethylene that accounts for 78.5% of the total weight of the nano-thermal conductive material to be ...

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Abstract

The invention relates to a thermal-conductivity nano-composite material and a preparation method thereof. The thermal-conductivity nano-composite material comprises the following components by weight percentage: 10-80% of polyolefin, 2-15% of nano-material, 5-50% of thermal conductivity additive, 3-10% of environmental stress resistant cracking additive, 4-19% of impact resistant modifier additive, 0.1-0.5% of antioxidant, a coupling agent of 0.4-3% of the total amount of the nano-material and the thermal conductivity additive, and a wetting agent of 1-6% of the total amount of the nano-material and the thermal conductivity additive. The preparation method comprises the following steps that: firstly, the nano-material, the polyolefin, the impact resistant modifier additive, the coupling agent, and the wetting agent are melted and co-blended according to a certain ratio to be made into masterbatches; secondly, the polyolefin, the masterbatches, the thermal conductivity additive, the environmental stress resistant cracking additive, the impact resistant modifier additive, the antioxidant, the coupling agent and the wetting agent are melted and co-blended according to a certain ratio to be extruded and dried; and thirdly, the materials are melted and co-blended to be extruded and dried to obtain a product. The materials provided by the invention have excellent thermal conductivity and good mechanical properties, and are widely used in heat exchange equipment in various industries.

Description

technical field [0001] The invention relates to a polymer material, in particular to a nano heat-conducting composite material. Background technique [0002] At present, the heat exchange elements of ice storage equipment at home and abroad are mostly metal coils, and some manufacturers also produce plastic coils, but most of them use ordinary plastics, which have poor thermal conductivity and low system efficiency, making it difficult to ensure low-temperature air supply and district cooling. The performance requirements of the system for ice storage equipment. However, the metal coil is easy to corrode and has high requirements for the fluid in the tube, which increases the cost of the product and reduces the service life of the product. The above-mentioned problems of the traditional ice storage system hinder the rapid development of this technology. It can be seen that improving the thermal conductivity of the ice storage coil, prolonging the service life of the produc...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L23/16C08L23/08C08K13/04C08K3/26C08K3/04C08K7/06C08K3/08C08K5/526C08J3/22
Inventor 叶水泉
Owner HANGZHOU RUNPAQ ENVIRONMENT EQUIP
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