Attapulgite/carbon black composite suspension, preparation method, composite material and application

A technology of attapulgite and nanocomposite materials, applied in the field of preparation of attapulgite/carbon black suspension, which can solve the problems of poor reinforcement performance and low solid content, and achieve increased expansion capacity, large specific surface area, and improved affinity and performance effects

Active Publication Date: 2018-12-25
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a kind of preparation method of attapulgite / carbon black composite suspension, the prepared attapulgite / carbon black composite suspension, the preparation method of rubber-based attapulgite / carbon black nanocomposite material, Application of the obtained rubber-based attapulgite / carbon black nanocomposite material and attapulgite / carbon black composite suspension in the preparation of rubber-based attapulgite / carbon black nanocomposite to solve the problem of rubber reinforcement in the prior art The defects of low solid content and poor reinforcing performance of attapulgite suspension

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  • Attapulgite/carbon black composite suspension, preparation method, composite material and application

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[0032] In order to overcome the deficiencies in the prior art, while making attapulgite / carbon black have good water suspension properties and affinity properties with rubber macromolecular chains, attapulgite / carbon black suspensions with high solid content are prepared, for Preparation of rubber-based attapulgite / carbon black nanocomposites by emulsion co-flocculation and co-coagulation lays a solid foundation. The present invention proposes a kind of preparation method of attapulgite / carbon black composite suspension, comprises the following steps:

[0033] Step 1: Purifying the attapulgite;

[0034] Step 2: activating the attapulgite after purification in step 1;

[0035] Step 3: Surface modification of attapulgite / carbon black: adding carbon black with a mass of attapulgite 1-5 times the mass of attapulgite and the total mass of attapulgite and carbon black to the activated attapulgite in step 2 1%-5 % of at least two or more surface modifiers, maintain the temperature ...

Embodiment 1

[0057] (1) Purification of attapulgite: Add the attapulgite raw ore into the pulverizer, the size of the crushed particles is 200 mesh, add water twice the mass to the attapulgite particles, and add purification to the attapulgite slurry. The modified dispersant sodium hexametaphosphate is stirred at a high speed for 10 minutes, and the stirring speed is 3000r / min, and the impurities in the attapulgite slurry are removed through a 100-mesh sieve to obtain the primary product of the attapulgite suspension;

[0058] (2) Activation of the attapulgite: while heating, add a concentration of 10% sulfuric acid solution to the prepared attapulgite suspension primary product, control the pH of the solution to be 3, activate for 1.5 hours; then maintain the temperature of the solution Constant, add sodium hydroxide particle wherein under continuous stirring, the pH value of control solution is 6.5, and this process maintains 1.2 hours;

[0059] (3) Surface modification of attapulgite / ca...

Embodiment 2

[0061] (1) Purification of attapulgite: Add the attapulgite raw ore into the pulverizer, the size of the crushed particles is 200 mesh, add water 3 times the mass to the attapulgite particles, add purification to the attapulgite slurry The modified dispersant sodium pyrophosphate is stirred at a high speed for 8 minutes, and the stirring speed is 2500r / min, and the impurities in the attapulgite slurry are removed through a 100-mesh sieve to obtain the preliminary product of the attapulgite suspension;

[0062] (2) Activation of attapulgite: while heating, adding concentration to the prepared attapulgite suspension primary product is 10% sulfuric acid solution, controlling the pH value of the solution to be 4, and activating for 2 hours; then maintaining the temperature of the solution Constantly, sodium hydroxide particles are added thereto under continuous stirring to control the pH of the solution to be 7.5, and the process is maintained for 1.5 hours;

[0063] (3) Surface m...

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Abstract

The invention provides a preparation method of an attapulgite / carbon black composite suspension, the prepared attapulgite / carbon black composite suspension, a preparation method of a rubber based attapulgite / carbon black nanocomposite, the prepared rubber based attapulgite / carbon black nanocomposite, and application of the attapulgite / carbon black composite suspension to the preparation of the rubber based attapulgite / carbon black nanocomposite. The preparation method of the attapulgite / carbon black composite suspension includes the steps of: purifying attapulgite; activating the purified attapulgite; and adding carbon black having the mass which is 1-5 times of the mass of the attapulgite and at least more than two surface modifiers having the mass which is 1%-5% of the total mass of the attapulgite and the carbon black to the activated attapulgite, keeping the temperature of a solution, stirring and sieving the solution, and obtaining the attapulgite suspension. A solid content of the prepared attapulgite / carbon black suspension liquid reaches 30-50%. The attapulgite / carbon black suspension has good suspension performance and has good affinity performance with a rubber large molecular chain.

Description

technical field [0001] The invention relates to a preparation method of an inorganic non-metallic ore suspension, in particular to a preparation method of an attapulgite / carbon black suspension. Background technique [0002] Carbon black is a traditional reinforcing material in the rubber industry. However, in the process of reinforcing rubber, carbon black will generate a lot of dust, which will cause serious environmental pollution and personal injury to producers in the rubber production process. [0003] The typical chemical formula of attapulgite is Mg 5 Si 8 o 20 (OH) 2 (OH 2 ) 4 4H 2 O, a silicate mineral rich in magnesium and aluminum, has a unique structure. The diameter of a single fiber crystal is about 20-70nm, and the length is about 0.5-5μm. It is a natural one-dimensional nanomaterial with many properties. Excellent performance, the research found that the surface treatment of attapulgite by appropriate methods can partially replace the traditional rein...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/02C08K9/04C08K9/06C08K3/34C08K3/04C08L21/00
Inventor 范永将谷正李彤霞潘广勤刘伟生艾纯金葛蜀山张国林刘栓祥朱晶高卫光李冬红李红春张守汉齐永新张耀亨龚光碧钟铭丽徐斌肖瑞王文杰
Owner PETROCHINA CO LTD
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