Surface non-polar modification method of sepiolite mineral powder and application of sepiolite mineral powder in plastic or rubber filler

A technology for mineral powder and sepiolite, which is applied in the field of rubber and plastic fillers, can solve the problems of high cost, affecting the production, use and promotion of modified sepiolite mineral powder, and harsh conditions.

Pending Publication Date: 2021-04-20
湘潭海泡石科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the modification of sepiolite mineral powder mostly uses silicon-oxygen coupling agent and is carried out in a high-temperature environment. The conditions are harsh, the cost is high, and it is easy to cause pollution, which affects the production of modified sepiolite mineral powder. use and promotion

Method used

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  • Surface non-polar modification method of sepiolite mineral powder and application of sepiolite mineral powder in plastic or rubber filler
  • Surface non-polar modification method of sepiolite mineral powder and application of sepiolite mineral powder in plastic or rubber filler
  • Surface non-polar modification method of sepiolite mineral powder and application of sepiolite mineral powder in plastic or rubber filler

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Experimental program
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specific Embodiment approach

[0025] The present invention prepares surface non-polarized sepiolite mineral powder, and its preferred embodiment is:

[0026] The formula components and their weight ratios are (based on the weight of sepiolite mineral powder), sepiolite mineral powder: palmitic acid: absolute ethanol: ferric chloride hexahydrate: water=1:0.0008~0.02: 3.945: 0.006850~0.027375: 7.5; the reaction conditions are: reaction time 10~100min, modification temperature 30~60℃.

[0027] The palmitic acid, namely "hexadecanoic acid", has more carbon atoms in the molecular chain and is highly non-polar, so it can be non-polarized by grafting on the surface of the sepiolite mineral powder. The absolute ethanol is a solvent for palmitic acid, which plays a role in promoting the dispersion of palmitic acid molecules in the reaction system. Described ferric chloride hexahydrate is catalyzer, and ferric chloride is a kind of strong Lewis acid, and catalytic mechanism is that the outer layer empty track of Le...

Embodiment 1

[0029] Embodiment 1: the mass ratio of each component of the present embodiment and concrete steps are:

[0030] Sepiolite mineral powder: palmitic acid: absolute ethanol: ferric chloride hexahydrate: water=1:0.02:3.945:0.027375:7.5.

[0031] 1) Weigh 0.08g of palmitic acid into a 50mL beaker, then add 20mL of absolute ethanol, and stir until completely dissolved;

[0032] 2) Weigh 4g of sepiolite mineral powder and add it to a 100mL beaker, then add 30mL of deionized water, stir evenly with a heat-collecting magnetic stirrer at a speed of 300r / min, and the temperature of the water bath is 30°C;

[0033] 3) Weigh 0.1095g FeCl 3 ·6H 2 O joins in the beaker in step 2), stirs until dissolving completely;

[0034] 4) Add the palmitic acid ethanol solution prepared in step 1) into the beaker in step 3), keep the rotation speed and the temperature of the water bath constant, and react for 40 minutes;

[0035] 5) Suction filter the reaction solution in step 4), wash twice with 30...

Embodiment 2

[0036] Embodiment 2: the mass ratio of each component of the present embodiment and concrete steps are:

[0037] Sepiolite mineral powder: palmitic acid: absolute ethanol: ferric chloride hexahydrate: water = 1: 0.015: 3.945:: 0.027375: 7.5.

[0038] 1) Weigh 0.06g of palmitic acid into a 50mL beaker, then add 20mL of absolute ethanol, and stir until completely dissolved;

[0039] 2) Weigh 4g of sepiolite mineral powder and add it to a 100mL beaker, then add 30mL of deionized water, stir evenly with a heat-collecting magnetic stirrer at a speed of 300r / min, and the temperature of the water bath is 30°C;

[0040] 3) Weigh 0.1095g FeCl 3 ·6H 2 O joins in the beaker in step 2), stirs until dissolving completely;

[0041] 4) Add the palmitic acid ethanol solution prepared in step 1) into the beaker in step 3), keep the rotation speed and the temperature of the water bath constant, and react for 40 minutes;

[0042] 5) Suction filter the reaction solution in step 4), wash twice...

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Abstract

The invention discloses a surface non-polar modification method of sepiolite mineral powder and application of the sepiolite mineral powder in plastic or rubber filler. The preparation method comprises the following steps: performing wet modification on sepiolite mineral powder by taking palmitic acid as a non-polar modifier and absolute ethyl alcohol as a solvent, and performing heterogeneous esterification reaction on surface hydroxyl of the sepiolite mineral powder and carboxyl of palmitic acid molecules in a normal-temperature water medium by virtue of a catalyst ferric chloride hexahydrate to form an ester bond; and grafting palmitic acid chains on the surfaces of the particles, so that the surfaces of the particles are non-polarized. The non-polar modified formula provided by the invention is simple in components, low in cost and free of toxic and side effects; the prepared surface non-polarized sepiolite mineral powder is stable in performance and obvious in modification effect, and can be widely applied to plastic rubber fillers.

Description

technical field [0001] The invention relates to a rubber and plastic filler, in particular to a method for surface non-polarization modification of sepiolite mineral powder and its application in plastic or rubber filler. Background technique [0002] According to the data released by China Industry Information Network, since 2008, the annual demand for rubber and plastics in the Chinese market has increased year by year, and the total demand in 2015 was more than 76 million tons (http: / / www.cnii.com. cn / ), while the manufacturing process of plastics and rubber requires a large amount of fillers to improve their physical properties, at the same time, fillers also play a vital role in reducing costs. Therefore, rubber and plastic fillers have huge market capacity and broad prospects for industrial application. [0003] Using natural minerals as fillers for rubber and plastics is a common method used in industry to reduce product production costs. However, the surface of natu...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08K3/34C08L7/00C08L9/06
Inventor 欧阳东红谭建杰罗文君黄建武谢彦罗天添穆金龙戴维
Owner 湘潭海泡石科技有限公司
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