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A kind of modified graphite masterbatch and preparation method thereof

A graphite and masterbatch technology, applied in the field of material science, can solve problems such as difficult cutting and difficult dispersion, and achieve the effect of improving dispersion effect, high addition amount, and good dispersion effect

Active Publication Date: 2016-02-10
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the disadvantages of light weight of graphite, difficulty in blanking when processing on a screw extruder, and difficulty in dispersing in resin, the purpose of this invention is to provide a modified graphite masterbatch, which has good dispersibility and compatibility

Method used

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  • A kind of modified graphite masterbatch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of modified graphite masterbatch and processing method thereof, as follows:

[0030] Mix 950g of 1000-mesh flake graphite powder, 30g of titanium dioxide, and 20g of silane coupling agent KH-550 at 90°C for 30 minutes, take it out and cool to obtain mixed powder a; mix 1000g of mixed powder a with 727g of PP resin powder, 55g dicumyl peroxide, 36g maleic anhydride acrylic acid copolymer, stirred and mixed at room temperature in a high-speed mixer for 30min, took out and cooled to obtain mixed powder b;

[0031] Add the mixed powder b into a rubber internal mixer and knead for 15 minutes, and the temperature of the kneader is 190°C;

[0032] Cut or pulverize the blocks obtained by mixing with a rubber mixer to obtain graphite masterbatches.

Embodiment 2

[0034] A kind of modified graphite masterbatch and processing method thereof, as follows:

[0035] Mix 600g of 800-mesh flake graphite powder, 350g of montmorillonite, and 50g of titanate coupling agent 9S at 130°C for 30 minutes, take it out and cool to obtain mixed powder a; mix 1000g of mixed powder a with 209g of PET resin Powder, 6g of azobisisoheptanonitrile, 35g of diphenylmethane diisocyanate, stirred and mixed at room temperature in a high-speed mixer for 20min, took out and cooled to obtain mixed powder b;

[0036] Add the mixed powder b into the rubber internal mixer and knead for 20 minutes, and set the temperature of the kneader to 245°C;

[0037] Cut or pulverize the blocks obtained by mixing with a rubber mixer to obtain graphite masterbatches.

Embodiment 3

[0039] A kind of modified graphite masterbatch and processing method thereof, as follows:

[0040] Mix 780g of 500-mesh flake graphite powder, 218g of alumina, and 2g of silane coupling agent KH-570 at 120°C for 20 minutes, take it out and cool, and obtain mixed powder a; mix 1000g of mixed powder a with 412g of PBT resin powder , 26.5g benzoyl peroxide, 32g maleic anhydride, stirring and mixing at room temperature in a high-speed mixer for 15min, taking out and cooling to obtain mixed powder b;

[0041] Add the mixed powder b into the rubber internal mixer and knead for 30 minutes, and set the temperature of the kneader to 230°C;

[0042] Cut or pulverize the blocks obtained by mixing with a rubber mixer to obtain graphite masterbatches.

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Abstract

The invention belongs to the technical field of material science, and discloses a modified graphite masterbatch and a preparation method thereof. The disclosed modified graphite masterbatch comprises the following components of, in mass percentages, 33-76% of graphite powder, 1.65-28% of inorganic powder, 0.11-4% of a coupling agent, 15-40% of resin powder, 0.5-3% of an initiator and 0.5-5% of a grafting material. The invention also discloses the preparation method of the modified graphite masterbatch. The graphite masterbatch has good dispersibility and compatible effects.

Description

technical field [0001] The invention belongs to the technical field of material science and relates to a modified graphite masterbatch and a preparation method thereof. Background technique [0002] Graphite has excellent electrical and thermal conductivity, good temperature resistance, non-toxic, non-scaling, and non-polluting media. It can be made into plastics with excellent properties when compounded with resin. However, due to the small size, light weight and easy scattering of graphite itself, in the traditional blending and extrusion process, when the addition amount is large (mass > 20%), whether it is one-time co-feeding or side feeding with resin, It will happen that graphite is blocked at the feeding port, the feeding speed is uneven, and the processing process is unstable, which seriously affects the processing speed and product performance. In order to achieve a high filling amount of graphite in order to take advantage of its excellent high thermal conducti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/06C08L25/06C08L67/02C08L59/02C08L69/00C08L77/02C08L33/12C08L77/06C08L55/02C08K9/06C08K9/04C08K3/04C08K3/34C08K3/22C09C1/46C09C3/12C09C3/08C09C3/10
Inventor 吴超
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD