High-filling surface finish carbon fiber master batches for plastic reinforcement and preparation method thereof

A technology for surface modification and carbon fiber, applied in the field of polymer plastic masterbatch and its preparation, can solve the problems of low surface energy of carbon fiber, and achieve the effect of simple preparation method and simple operation

Inactive Publication Date: 2019-01-04
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above deficiencies, the object of the present invention is to provide a high-filling surface-modified carbon fiber masterbatch for plastic reinforcement and its preparation method, which solves the problem of low surface energy of carbon fiber and improves the interfacial compatibility between resin and carbon fiber, so that carbon fiber can be filled in plastic Exercising original performance with reinforced materials

Method used

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  • High-filling surface finish carbon fiber master batches for plastic reinforcement and preparation method thereof
  • High-filling surface finish carbon fiber master batches for plastic reinforcement and preparation method thereof
  • High-filling surface finish carbon fiber master batches for plastic reinforcement and preparation method thereof

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Embodiment 1

[0032] This embodiment provides a method for preparing a highly filled surface-modified carbon fiber masterbatch for plastic reinforcement, comprising the following steps:

[0033] Preparation of surface-modified carbon fibers:

[0034] A. prepare the mixed solution of acetone and dehydrated alcohol, wherein, the content of described acetone is 50%;

[0035] B. Take polyacrylonitrile-based carbon fiber with high thermal conductivity, its diameter is 6-9μm, the heat-resistant temperature is 3000°C, and the density is 1.5-2.0g / cm 3 . The high thermal conductivity polyacrylonitrile-based carbon fiber is soaked in the mixed solution of acetone and absolute ethanol, and dried at 50° C. for 4 hours with ultrasonic to obtain the preliminary treated carbon fiber;

[0036] C. prepare the mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, wherein, the content of described concentrated nitric acid is 20%;

[0037] D. Soak the preliminary treated carbon fib...

Embodiment 2

[0045] This embodiment provides a method for preparing a highly filled surface-modified carbon fiber masterbatch for plastic reinforcement, comprising the following steps:

[0046] Preparation of surface-modified carbon fibers:

[0047] A. prepare the mixed solution of acetone and dehydrated alcohol, wherein, the content of described acetone is 60%;

[0048] B. Take high thermal conductivity viscose-based carbon fiber with a diameter of 6-9μm, a heat-resistant temperature of 3000°C, and a density of 1.5-2.0g / cm 3 . Soak the high thermal conductivity viscose-based carbon fiber in the mixed solution of acetone and absolute ethanol, and dry it after ultrasonication at 60°C for 3 hours to obtain the initially treated carbon fiber;

[0049] C. prepare the mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, wherein, the content of described concentrated nitric acid is 30%;

[0050] D. Soaking the preliminary treated carbon fibers prepared in step B in ...

Embodiment 3

[0058] This embodiment provides a method for preparing a highly filled surface-modified carbon fiber masterbatch for plastic reinforcement, comprising the following steps:

[0059]Preparation of surface-modified carbon fibers:

[0060] A. prepare the mixed solution of acetone and dehydrated alcohol, wherein, the content of described acetone is 80%;

[0061] B. Take high thermal conductivity viscose-based carbon fiber with a diameter of 6-9μm, a heat-resistant temperature of 3000°C, and a density of 1.5-2.0g / cm 3 . The high thermal conductivity viscose-based carbon fiber is soaked in the mixed solution of acetone and absolute ethanol, and dried at 70° C. for 3 hours with ultrasonic to obtain the initially treated carbon fiber;

[0062] C. prepare the mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, wherein, the content of described concentrated nitric acid is 40%;

[0063] D. Soaking the preliminary treated carbon fibers prepared in step B in t...

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Abstract

The invention discloses a preparation method for high-filling surface finish carbon fiber master batches for plastic reinforcement. The preparation method comprises the steps of (1) raw materials areprepared; (2) a carrier and an additive in the step (1) are thrown in a high-speed mixer for 5-7 min, and a mixture A is obtained; (3) the mixture A in the step (2) is added into a double-threaded rodextruder through a main feeding port, surface finish carbon fiber in the step (1) is added into the double-threaded rod extruder through a lateral feeding port, and the double-threaded rod extruder extrudes the surface finish carbon fiber out in a melting mode; (4) through stretching, cooling, master batch cutting and drying treatment, the high-filling surface finish carbon fiber master batch products are obtained. The invention provides the high-filling surface finish carbon fiber master batches for plastic reinforcement. The problems that in the preparation process of the high-filling surface finish carbon fiber master batches, the interface bonding force between the master batches and the carrier is poor, and the dispersion of the master batches is uneven are solved, and a material hasconductive and heat-conducting properties.

Description

technical field [0001] The invention relates to a polymer plastic masterbatch and a preparation method thereof, in particular to a highly filled surface-modified carbon fiber masterbatch for plastic reinforcement and a preparation method thereof. Background technique [0002] Plastic high-filling masterbatch refers to a processing aid for plastic molding that is obtained by adding fillers that exceed the conventional addition amount (mostly 50 wt%) to the carrier resin. When molding plastic products, masterbatch can be directly added, so as to achieve the purpose of simplifying the production process, saving raw materials, and uniform mixing quality, which is conducive to promoting the development of the plastics industry. [0003] Carbon fiber is a high-strength, high-modulus fiber material with a carbon content of more than 90%. It is mainly a microcrystalline graphite material obtained through oxidative carbonization and graphitization. Thermal, light weight and good the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L23/06C08L81/02C08L23/12C08L69/00C08L67/02C08L59/00C08K9/04C08K9/02C08K7/06C08K5/134C08K5/526C08K13/06C08J3/22
CPCC08J3/226C08J2423/06C08J2423/12C08J2459/00C08J2467/02C08J2469/00C08J2477/00C08J2481/02C08K5/1345C08K5/526C08K7/06C08K9/02C08K9/04C08K13/06
Inventor 丁鹏徐同乐宋娜施利毅
Owner SHANGHAI UNIV
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