Graphene-modified polyethylene terephthalate resin

A technology of polyethylene terephthalate and ethylene terephthalate, which is applied in the field of reinforced polymer materials and graphene-modified polyethylene terephthalate resin, can solve the problem of heavy metal back cover, It is free from the problems of fashion and thinness, and the mobile phone feels cumbersome to hold, and achieves the effect of firm combination, good glossy texture and good combination effect.

Inactive Publication Date: 2019-01-04
SICHUAN LIZHI JIUCHUANG INTPROP OPERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As an exploration, some mobile phone manufacturers have developed and designed mobile phones with metal back covers. The metal back cover has good heat dissipation, but the metal back cover is very heavy, which makes the mobile phone feel very cumbersome to hold, causing users to hold the mobile phone. Creates a feeling of detachment from fashion and lightness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A graphene-modified polyethylene terephthalate resin, containing 5wt% graphene in the polyethylene terephthalate resin.

Embodiment 2

[0042] A graphene-modified polyethylene terephthalate resin, containing 2wt% graphene in the polyethylene terephthalate resin. The preparation method is as follows:

[0043] (1) Dissolve graphene in ethanol, and stir for 20 minutes at a speed above 3000r / min, so that the material liquid is evenly dispersed.

[0044] (2) Then add polyethylene terephthalate masterbatch granules to the feed liquid, continue to stir for 5 minutes, transfer to a drum dryer, and drum dry.

[0045] (3) The dried material is heated and melted under nitrogen protection, and finally cooled to obtain a graphene-modified polyethylene terephthalate resin.

Embodiment 3

[0047] A graphene-modified polyethylene terephthalate resin, containing 3wt% modified graphene in the polyethylene terephthalate resin. The modified graphene is modified by using humic acid, and the modification process is as follows: take humic acid, add 3 times the weight of 20v% ethanol solution, stir for 10 minutes, filter and retain the filter residue; add 10 times the weight of the second Diethanol solution, add graphene (4 times weight with respect to humic acid), 3000r / min stirs 15min, obtains humic acid composite graphene feed liquid.

[0048] The process of preparing graphene-modified polyethylene terephthalate is as follows:

[0049]Add polyethylene terephthalate masterbatch granule to above-mentioned humic acid composite graphene feed liquid, continue to stir 5min, transfer in the tumble drier, tumble dry. The dried material is heated and melted under the protection of nitrogen, and finally cooled to obtain a graphene-modified polyethylene terephthalate resin.

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PUM

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Abstract

The invention discloses graphene-modified polyethylene terephthalate resin. The graphene-modified polyethylene terephthalate resin is characterized by comprising 1-5wt% of modified graphene. The graphene-modified polyethylene terephthalate resin has the advantages that the graphene is adopted for strengthening and modifying, by means of excellent heat-conducting property of the graphene, heat-conducting property of a PET (polyethylene terephthalate) resin material can be substantially promoted and optimized, and so that when the PET is adopted as rear covers of electronic products, heat dissipation performance of the PET can reach close to that of a metal material.

Description

technical field [0001] The invention relates to a reinforced polymer material, in particular to a graphene-modified polyethylene terephthalate resin, which belongs to the technical field of polymer materials. Background technique [0002] Polyethylene terephthalate (PET) is synthesized from bishydroxyethyl terephthalate by transesterification of dimethyl terephthalate and ethylene glycol or by esterification of terephthalic acid and ethylene glycol. , and then made by polycondensation reaction. The appearance of polyethylene terephthalate is a milky white or light yellow crystalline polymer with a smooth and shiny surface. It has excellent physical and mechanical properties in a wide temperature range, and the long-term use temperature can reach 120 ° C. [0003] With the rapid development of the smart phone field, as mobile phones become thinner and thinner, light and thin is gradually becoming the next outlet for the development of the mobile phone industry. Most of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K3/04C08K9/04C09K5/14
CPCC08K3/042C08K9/08C08L2203/20C09K5/14C08L67/02
Inventor 张慧张羽
Owner SICHUAN LIZHI JIUCHUANG INTPROP OPERATION CO LTD
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