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Secondary coupled modified mineral powder filling material and preparation process thereof

A technology of mineral powder and mineral filler, which is applied in the direction of fibrous filler, dyed organic silicon compound treatment, dyed low molecular organic compound treatment, etc., can solve problems such as difficulties, and achieve improved reinforcement performance, good compatibility, and adhesion The effect of high branch efficiency

Inactive Publication Date: 2013-04-24
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the mineral powders obtained by the above modification method are micron-sized particles. It is difficult to disperse the mineral powders in the rubber matrix with nano-sized particles.

Method used

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  • Secondary coupled modified mineral powder filling material and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation of modified montmorillonite powder mineral filler:

[0022] Add 20 kg of a mixture of acetone and ethyl acetate with a volume ratio of 1:1 in a 50L autoclave, then add 1.0 kg of silane coupling agent, and stir to form a uniform solution. When the stirring speed is lower than 25rpm, add 10kg of montmorillonite mineral content 92%, specific surface area 105m 2 / g powder, airtight the reactor, energize and heat to 60℃, control the stirring speed to 1500rpm, stir for 1h, and ultrasonically disperse during 20min. After standing to cool, add 1.0kg of 1,4-pentadiene, continue to seal, keep keeping the temperature at 90°C, and stir for 2h under the condition of 1500rpm, during which ultrasonic dispersion is 20min. After the solid-liquid separation after cooling, the solid-phase part is dried at 106°C, pulverized by jet mill, and sealed and stored to obtain secondary modified montmorillonite mineral powder.

[0023] Use the powder to fill EPDM rubber, the formula is base...

Embodiment 2

[0025] Preparation of modified sepiolite mineral powder filler:

[0026] Add 20kg of n-butanol to a 50L autoclave, then add 0.1kg of silane coupling agent and 0.1kg of titanate coupling agent, and stir to form a uniform solution. When the stirring speed is lower than 25rpm, add 10kg of sepiolite with a mineral content of 95% and a specific surface area of ​​126m 2 / g powder, airtight the reactor, energize and heat to 90°C, control the stirring speed to 1500rpm, stir for 1h, and ultrasonically disperse for 20min during this period. After standing to cool, add 0.2kg of acrylonitrile, continue to seal, keep the temperature at 120°C, and stir at 1500rpm for 2h, during which time it is ultrasonically dispersed for 20min. After the solid-liquid separation after cooling, the solid-phase part is dried at 120°C, pulverized by jet mill, and sealed and stored to obtain the sepiolite mineral powder modified by secondary coupling synergistically.

[0027] When using this powder to fill nitrile...

Embodiment 3

[0029] Preparation of modified attapulgite mineral powder filler:

[0030] Add 20 kg of a mixture of isopropanol and toluene with a volume ratio of 1:1 in a 50L autoclave, then add 1.0 kg of silane coupling agent and 1.0 kg of titanate coupling agent, and stir to form a uniform solution. When the stirring speed is lower than 25rpm, add 20kg of attapulgite mineral content 98%, specific surface area 168m 2 / g powder, airtight the reactor, energize and heat to 80°C, control the stirring speed to 1500rpm, stir for 1h, and ultrasonically disperse for 20min during this period. After standing to cool, add 1.0kg of polypropylene and 1.0kg of styrene, continue to seal, keep the temperature at 90°C, and stir at 1500rpm for 2h, during which ultrasonic dispersion is 20min. After the solid-liquid separation after cooling, the solid-phase part is dried at 110°C, pulverized by jet mill, and sealed and stored to obtain the attapulgite mineral powder modified by secondary coupling synergistically...

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Abstract

The invention provides a secondary coupled modified mineral powder filling material which comprises, by mass, 85 to 98% of silicate clay mineral powder, 1.0 to 10% of a coupling agent, and 1.0 to 10% of a functional organic compound, wherein the amount of the above-mentioned components sums to 100%. The modified mineral powder filling material prepared in the invention has good compatibility with a rubber substrate, and functional organic compound modified mineral powder with high affinity is beneficial for improvement of reinforcing performance of the filling material; since a water phase does not participate in the process of preparation, reaction obstacles caused by hydrophilicity of the mineral powder are avoided, the mineral powder can directly react with the coupling agent, higher grafting efficiency is realized, solid-liquid separation difficulty is reduced, drying efficiency is enhanced, and the phenomenon of caking in the process of drying is avoided.

Description

Technical field [0001] The invention relates to the field of processing of non-metallic mineral materials and the utilization of filled composite rubber, in particular to a secondary coupling modified mineral filler and a preparation process thereof. Background technique [0002] With the rapid development of my country's transportation industry, the consumption of various rubber products has increased significantly, and the consumption of rubber fillers has increased accordingly. The filler used in traditional rubber products is mainly carbon black, while the production of carbon black is based on fossil energy, which consumes a lot of oil, natural gas or coal chemical by-products, and releases a large amount of "greenhouse gas" CO 2 , SO 2 , NO x Pollutants such as polluting gases, dust, etc. It is a typical "three high industries" restricted by the country. Coupled with the continuous rise in international crude oil prices, the continuous rise in energy prices has led to a di...

Claims

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Application Information

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IPC IPC(8): C09C1/42C09C3/12C09C3/08C09C3/10C08L23/16C08K13/06C08K9/06C08K9/04C08K3/34C08L9/02C08L9/06C08L15/00C08L9/00C08L75/04
Inventor 汤庆国梁金生丁燕王菲
Owner HEBEI UNIV OF TECH
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