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Environment-friendly defoaming masterbatch particles for rubber, and preparing and packaging methods thereof

A technology of colloidal particles and masterbatch, which is applied in the direction of fibrous filler, dyed low-molecular organic compound treatment, dyed high-molecular organic compound treatment, etc., and can solve problems such as poor compatibility of rubber, odor, dust, etc.

Active Publication Date: 2011-07-20
河南利源精细材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of traditional calcium oxide powder applied to rubber, such as dust, odor, poor compatibility with rubber, uneven dispersion, etc., to provide an environmentally friendly calcium oxide masterbatch, preparation and how to save it

Method used

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  • Environment-friendly defoaming masterbatch particles for rubber, and preparing and packaging methods thereof
  • Environment-friendly defoaming masterbatch particles for rubber, and preparing and packaging methods thereof
  • Environment-friendly defoaming masterbatch particles for rubber, and preparing and packaging methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0096] The concrete steps that the present invention prepares defoamer calcium oxide masterbatch are as follows:

[0097] 1. Adopt ultra-fine technology and particle size control process to crush and control the particle size of calcium oxide. The crushing of calcium oxide can be realized by ball mill or jet mill, and the average particle size of the powder is strictly controlled to be 0-30 μm. The particle size is below 40-65 μm.

[0098] 2. Add the pulverized calcium oxide into the internal mixer quickly, and add the components including high polymer carrier masterbatch, plasticizer, stabilizer, processing oil, resin, and coupling agent in a certain proportion in sequence.

[0099] (1) The sum of the proportions of each component is 100%, and the formula ratio (mass / weight percentage) is specifically:

[0100]

[0101] (2) Requirements for each composite component:

[0102] Rubber: one or several mixtures of EPDM rubber, EPDM rubber, styrene-butadiene rubber, and nitril...

Embodiment 1

[0117] Weigh 2kg of calcium oxide powder (purchased from Lianyungang Jingsheng New Material Co., Ltd., purity 97%) and put it into a 5L airtight ball mill, grind for 3 hours, take 0.5g for particle size test, the result is: the average particle size is 8.968 μm, All particle diameters are 35 μm or less.

[0118] Mix 250g of nitrile rubber (purchased from Zhenjiang Nandi Chemical Co., Ltd., Jiangsu, China) with 12.5g of cable-grade EVA resin (purchased from DuPont), 25g of stearic acid, 15g of dioctyl phthalate, 3.25g of aromatic Oil (purchased from Hangzhou Refinery of Sinopec Group) was added to a 3.5L internal mixer and mixed for 2 minutes, the temperature rose to 60°C, and the speed was 60r / min; the crushed calcium oxide powder and dioctyl phthalate 10g , 15g of aromatic oil, 5g of fumaric acid was added into the internal mixer in 2 times and mixed with the high polymer carrier masterbatch of nitrile rubber for 3 minutes, and then thinly passed 6 times on the open mixer to ...

Embodiment 2

[0121] Weigh 2Kg of calcium oxide powder into a 5L closed ball mill, grind for 2 hours, the average particle size is 12.95 μm, and the total particle size is 63 μm or less.

[0122] Add 428g of EPDM rubber (purchased from Disman, the United States), 21g of cable-grade EVA resin (purchased from BASF), 43g of stearic acid, 25g of fatty acid alcohol ester mixture, and 103g of naphthenic oil in 3.5L Mix in an internal mixer at 60°C for 4 minutes at a speed of 65r / min;

[0123] Then add 2Kg of crushed calcium oxide powder and 18g of the mixture of fatty acid alcohol ester, 210g of naphthenic oil, 8.6g of the mixture of ethyl acrylate and fumaric acid, and add them to the internal mixer in 3 times and refine them with the rubber polymer carrier for 5 minutes , and then thin pass 6 times on the mill;

[0124] Put the rubber into the extruder, the heating temperature of the extruder is 60°C, the speed of the main machine is 100 rpm, the feeding speed is 60 rpm, pelletize, add 1% rele...

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Abstract

The invention provides a calcium oxide-containing micelle composition, which comprises masterbatch at least comprising one of natural rubber, synthetic rubber and a mixture thereof, calcium oxide, a coupling agent, and a processing aid comprising at least one of processing oil, a plasticizer and a stabilizing agent. The calcium oxide-containing pre-dispersed materbatch particles overcome the defects of dust, odor, low compatibility with rubber, nonuniform dispersion and the like in the conventional method that calcium oxide powder is directly used as a defoaming agent in rubber, and are environment-friendly. Meanwhile, the invention also provides methods for preparing and storing the calcium oxide-containing micelle composition.

Description

technical field [0001] The invention relates to a rubber additive composition, more specifically to pre-dispersed calcium oxide masterbatch particles, preparation and packaging. The product is mainly used for defoaming in the process of processing rubber or plastic products. Background technique [0002] Calcium oxide is a rubber vulcanization defoamer. Rubber products, especially sealing strips and hose products, need to be vulcanized continuously at high temperature and normal pressure during the preparation process. Due to the presence of moisture in the raw material compounding agent, water vapor is generated at high temperature, which often leads to air bubbles in the finished product. In order to prevent this kind of rubber products from producing air bubbles during vulcanization, in addition to other rubber additives used that need to be thoroughly dried before mixing, it is usually necessary to add a defoamer to the raw material, usually adding powder or paste oxidat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K3/22C09C1/02C09C3/10C09C3/08C08L7/00C08L23/08C08L23/16C08L23/28C08L9/02C08L9/00C08L9/06
Inventor 赵奕玲丁林连加松
Owner 河南利源精细材料有限公司
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