Polydimethylsiloxane carbon black master batch and preparation method thereof

The technology of polydimethylsiloxane carbon black and dimethylsiloxane carbon black is applied in the field of polydimethylsiloxane carbon black masterbatch and its preparation, which can solve the problem of the decrease of product gloss and the influence of continuous production. , die accumulation and other problems, to achieve the effect of improving processing performance, good processing performance and less die accumulation

Active Publication Date: 2016-12-21
BEIJING BEIHUA GAOKE NEW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the technical problems in the prior art that the use of polyethylene matrix resin and low-molecular-weight dispersant needles results in a large performance drop, a decrease in

Method used

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  • Polydimethylsiloxane carbon black master batch and preparation method thereof
  • Polydimethylsiloxane carbon black master batch and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Put 400 parts by weight of carbon black (brand: 50L, average primary particle size <25nm, 325 mesh residual content <50ppm, DBP oil absorption value 55ml / 100g) and 2000 parts by weight of concentrated nitric acid into a three-necked flask, and stir and react at 60°C for 5 hours , and then washed with deionized water until neutral, and dried at 50°C to obtain oxidized carbon black. 400 parts by weight of oxidized carbon black, 40 parts by weight of hydroxyl-terminated polydimethylsiloxane with a molecular weight of 2000, 2 parts by weight of dicyclohexylcarbodiimide, and 2 parts by weight of 4-dimethylaminopyridine were stirred at 50°C Modified carbon black was obtained in 4 hours.

[0034] Polydimethylsiloxane (relative molecular weight 100,000), antioxidant 1010 (tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, namely tetraerythritol ester) Put it into an internal mixer, discharge after melt blending, extrude and granulate to obtain the p...

Embodiment 2

[0038] Put 100 parts by weight of carbon black (same as Example 1) and 600 parts by weight of concentrated nitric acid into a three-necked flask, stir and react at 70°C for 12 hours, then wash with deionized water until neutral, and dry at 60°C to obtain oxidized carbon black. 100 parts by weight of oxidized carbon black, 20 parts by weight of hydroxyl-terminated polydimethylsiloxane with a molecular weight of 2500, and 1 part by weight of 4-dimethylaminopyridine were stirred at 75° C. for 8 hours to obtain modified carbon black.

[0039] The production technology of polydimethylsiloxane carbon black master batch is identical with embodiment 1. The specific formula of carbon black masterbatch is: polydimethylsiloxane (produced by U.S. Dow Corning Company, relative molecular weight 10,000), wherein modified carbon black is 100 parts by weight, antioxidant 1010 (same as embodiment 1) 0.5 parts by weight .

[0040] The production of the sheet was the same as in Example 1 except ...

Embodiment 3

[0042] Put 100 parts by weight of carbon black (same as Example 1) and 800 parts by weight of concentrated nitric acid into a three-necked flask, stir and react at 130°C for 24 hours, then wash with deionized water until neutral, and dry at 80°C to obtain oxidized carbon black. 100 parts by weight of oxidized carbon black and molecular weight are 50 parts by weight of hydroxyl-terminated polydimethylsiloxane of 5000, 1 weight part of 41-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride parts, stirred at 140°C for 10 hours to obtain modified carbon black.

[0043] The production technology of polydimethylsiloxane carbon black master batch is identical with embodiment 1. The concrete formula of carbon black masterbatch is: the part of polydimethylsiloxane (relative molecular weight 50,000) is 100 parts by weight, the part of modified carbon black is 50 parts by weight, antioxidant (same as embodiment 1) 0.5 parts by weight.

[0044] Except that the weight ratio of ASA ...

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Abstract

The invention relates to a polydimethylsiloxane carbon black master batch and a preparation method thereof, and solves the technical problems of high performance reduction, reduction of product glossiness, accumulation of materials in a mouth mold in the extrusion of the product and affection on continuous production due to adoption of a polyethylene matrix resin and a low-molecule dispersing agent in the prior art. The polydimethylsiloxane carbon black master batch provided by the invention comprises the following mixed components: a, 100 parts by weight of polydimethylsiloxane; b, 50-400 parts by weight of modified carbon black; c, 10-100 parts by weight of hydrated silica; and d, 0.1-15 parts by weight of antioxygen. The invention also provides the preparation method of the polydimethylsiloxane carbon black master batch. The polydimethylsiloxane carbon black master batch and the preparation method of the polydimethylsiloxane carbon black master batch can be applied in the field of preparation of the carbon black master batch.

Description

technical field [0001] The invention relates to a chemical material and a preparation method thereof, in particular to a polydimethylsiloxane carbon black masterbatch and a preparation method thereof. Background technique [0002] With the rapid development of the plastics industry, ASA extruded pipes, films, sheets and plates are widely used in the fields of automobiles, household appliances and consumer goods. Under outdoor conditions such as transportation, storage, and construction, natural-color ASA products will undergo photoaging and thermo-oxidative aging degradation, and their mechanical properties will decline. [0003] As we all know, carbon black is a kind of nano material, its primary particle size is generally between 15 and 120nm, and it is an efficient ultraviolet absorber and light shielding agent. Due to the requirements of product appearance and weather resistance, the proportion of black ASA plastic products continues to increase. In order to improve th...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08K13/06C08K9/06C08K3/04C08K3/36C08K5/134C08J3/22C08L51/00
CPCC08J3/226C08J2351/00C08J2483/04C08K2201/003C08L51/003C08L83/04C08L2201/08C08L2205/02C08L2205/03C08L2310/00C08L83/06C08K13/06C08K9/08C08K3/04C08K3/36C08K5/1345
Inventor 程红原李明哲
Owner BEIJING BEIHUA GAOKE NEW TECH
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