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Method for preparing rubber master batch

A technology of masterbatch and styrene-butadiene rubber, which is applied in the field of anti-corrosion materials and preparation, can solve the problems of different cold resistance of pressure-sensitive adhesives, and achieve the effects of reducing the amount of related additives, good anti-settling effect, chemical inertness, and good compatibility

Active Publication Date: 2013-10-16
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But different pressure sensitive adhesives have different cold resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: the parts by weight of each component for preparing masterbatch are:

[0034] 1. SBR: 13.5 parts;

[0035] 2. Natural rubber: 1.5 parts;

[0036] 3. Kaolin (average particle size: 5-10 μm): 10.4 parts;

[0037] 4. Light calcium carbonate, average particle size: 1-5 μm: 11.5 parts;

[0038] 5. No. 40 engine oil: 3 parts;

[0039] 6. Ethyl acetate: 1.5 parts;

[0040] 7. Dioctyl phthalate: 2.5 parts.

[0041] The preparation method of the masterbatch: first, add seven components of styrene-butadiene rubber, natural rubber, kaolin, light calcium carbonate, No. 40 engine oil, ethyl acetate, and dioctyl phthalate to LHY- 15 Horizontal ribbon mixer, mix at a speed of 14rpm / h for 1 to 2 hours, and mix evenly; then, put it in a rubber roller compactor and roll it for 5 to 6 times; finally, form a mother with a thickness of 1.5 to 2mm glue.

[0042] Effect: the cold resistance of the pressure-sensitive adhesive produced by the masterbatch produced by the met...

Embodiment 2

[0043] Embodiment 2: the parts by weight of each component for preparing masterbatch are:

[0044] 1. SBR: 13.3 parts;

[0045] 2. Natural rubber: 1.5 parts;

[0046] 3. Kaolin (average particle size 5-10 μm): 9.9 parts;

[0047] 4. Light calcium carbonate, average particle size: 1-5 μm: 12 parts;

[0048] 5. No. 40 engine oil: 3.5 parts;

[0049] 6. Ethyl acetate: 1.5 parts;

[0050] 7. Dioctyl phthalate: 2.2 parts.

[0051] The preparation method of masterbatch is identical with embodiment 1.

[0052] Effect: the cold resistance of the pressure-sensitive adhesive produced by the masterbatch produced by the method of the invention is improved by 10°C. Improve the performance of pressure-sensitive adhesives used in anti-corrosion tapes to make their water vapor transmission rate 0.40mg / cm 2 , improve its anti-corrosion and waterproof effect, and the water absorption rate is 0.29%.

Embodiment 3

[0053] Embodiment 3: the parts by weight of each component for preparing masterbatch are:

[0054] 1. SBR: 13 parts;

[0055] 2. Natural rubber: 1.5 parts;

[0056] 3. Kaolin (average particle size 5-10 μm): 10 parts;

[0057] 4. Light calcium carbonate, average particle size: 1-5 μm: 11.8 parts;

[0058] 5. No. 40 engine oil: 3.2 parts;

[0059] 6. Ethyl acetate: 1.8 parts;

[0060] 7. Dioctyl phthalate: 2.4 parts.

[0061] The preparation method of masterbatch is identical with embodiment 1.

[0062] Effect: the cold resistance of the pressure-sensitive adhesive produced by the masterbatch produced by the method of the invention is improved by 12°C. Improve the performance of pressure-sensitive adhesives used in anti-corrosion tapes to make their water vapor transmission rate 0.37mg / cm 2 , improve its anti-corrosion and waterproof effect, and the water absorption rate is 0.27%.

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Abstract

The invention relates to a method for preparing rubber master batch, which is applied to the technical field of anti-corrosive pipes. The rubber master batch is prepared from the following components in parts by weight: 12.5-13.5 parts of styrene butadiene rubber, 1.5-1.6 parts of nature rubber, 9.5-10.5 parts of kaolin, 11.5-12.5 parts of light calcium carbonate with average grain diameter of 1-5 microns; 3.0-3.5 parts of No. 40 engine oil, 1.5-2.0 parts of ethyl acetate and 2.0-2.5 parts of dioctyl phthalate. The method comprises the following step of: putting mixed raw materials into a rubber grinding machine to be ground to form the rubber master batch with the thickness of 1.5-2mm. The method for preparing the rubber master batch has the advantages of improving cold resistance of pressure-sensitive adhesive produced by adopting the rubber master batch to 8-12 DEG C, modifying the performance of the pressure-sensitive adhesive carried on anti-corrosive rubber, enabling the water vapor transmittance to be lower than 0.45mg / cm<2>, improving the anti-corrosive waterproof effect and enabling the water absorption to be lower than 0.30%.

Description

technical field [0001] The invention relates to the technical field of pipeline anticorrosion, in particular to an anticorrosion material and a preparation method. It is a masterbatch and a preparation method thereof. Background technique [0002] At present, in the anti-corrosion construction of oilfield production pipe network, anti-corrosion tape is often used for anti-corrosion and waterproof treatment, and the anti-corrosion tape needs to be evenly sprayed with pressure-sensitive adhesive made of masterbatch. But different pressure sensitive adhesives have different cold resistance. [0003] Published in the 7th issue of 2009 on the "World Rubber Industry" rubber knowledge: masterbatch and paste, it is pointed out that the masterbatch is to ensure the uniform dispersion of the mixed rubber, reduce dust flying, and improve the sanitation of rubber mixing. [0004] Publication number CN101084264, published on December 5, 2007, the patent "Natural Rubber Masterbatch and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J109/06C09J107/00C09J11/04
Inventor 付亚荣范忠钰李冬青曹瑾胡雄翼付茜李东昊付丽霞田中太于志铭令文学
Owner PETROCHINA CO LTD
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