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Single-sheet talcum powder and preparation method thereof

A talcum powder and monolithic technology, which is applied in the direction of dyeing physical treatment, dyeing low molecular organic compound treatment, fibrous fillers, etc., can solve the problems of talcum powder flake treatment, talc powder damage, and increased spacing, so as to improve the tensile strength. Effect of strength and tensile modulus, high added value, and low production cost

Active Publication Date: 2014-10-15
HAICHENG XINDA MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the current deep processing and modification of talc powder, there is no method of peeling off talc powder, or some talc powder is partially peeled off during the grinding process, but there are talc with low efficiency, poor effect, and single-layer sheet structure. The powder will be subject to defects and deficiencies such as mechanical damage. The present invention proposes a talcum powder with a single-layer sheet structure and a preparation method thereof. Increase the distance between the layers of talc powder, so that water molecules can penetrate into the interlayer of talc powder, and then use the high temperature and high pressure provided by the extruder to make the water molecules vaporize in an instant to force the talc powder layer and The layers are peeled off to form a talc powder with a single-layer flake structure

Method used

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  • Single-sheet talcum powder and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0029] 1) Mix 80 parts by weight of talc powder, 10 parts by weight of alkyl amino acids, and 10 parts by weight of deionized water, and then add them to a planetary ball mill, and grind for 30 minutes at a speed of 400 r / min and a temperature of 60 degrees Celsius Carry out pretreatment, and then discharge the material for use, that is, use the insertion of the alkyl group in the alkyl amino acid to increase the distance between the talc powder layers, so that water molecules can immerse into the interlayer of the talc powder;

[0030] 2) Extrude the pretreated talcum powder obtained in step 1) with an extruder, with an extruding temperature of 120 degrees Celsius and a pressure of 10 MPa, that is, the pressure formed by the instantaneous vaporization of water molecules using the high temperature and high pressure provided by the extruder Force the talcum powder layer to peel off from the layer to form a talc powder with a single-layer flake structure;

[0031] 3) Dry the tal...

Embodiment 2

[0033] 1) Mix 90 parts by weight of talcum powder, 5 parts by weight of alkyllactam, and 15 parts by weight of deionized water evenly, then add them to a planetary ball mill, and grind at a speed of 500r / min and a temperature of 80 degrees Celsius Pretreatment for 60 minutes, and then the material is discharged for use, that is, the intercalation of the alkyl group in the alkyl lactam is used to increase the distance between the talc powder layers, so that water molecules can penetrate into the interlayer of the talc powder ;

[0034] 2) Extrude the pretreated talcum powder obtained in step 1) with an extruder, with an extruding temperature of 150 degrees Celsius and a pressure of 15Mpa, that is, the pressure formed by the instantaneous vaporization of water molecules by using the high temperature and high pressure provided by the extruder Force the talcum powder layer to peel off from the layer to form a talc powder with a single-layer flake structure;

[0035] 3) Dry the ta...

Embodiment 3

[0037] 1) Mix 80 parts by weight of talc powder, 10 parts by weight of alkyldiamine, and 10 parts by weight of deionized water evenly, then add them to a planetary ball mill, and grind at a speed of 450 r / min and a temperature of 80 degrees Celsius Pretreatment for 60 minutes, and then the material is discharged for use, that is, the intercalation of the alkyl group in the alkyldiamine is used to increase the distance between the talc powder layers, so that water molecules can penetrate into the interlayer of the talc powder ;

[0038] 2) Extrude the pretreated talcum powder obtained in step 1) with an extruder, with an extruding temperature of 150 degrees Celsius and a pressure of 15Mpa, that is, the pressure formed by the instantaneous vaporization of water molecules by using the high temperature and high pressure provided by the extruder Force the talcum powder layer to peel off from the layer to form a talc powder with a single-layer flake structure;

[0039] 3) Dry the t...

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Abstract

The invention relates to single-sheet talcum powder and a preparation method thereof. The preparation method specifically comprises the following steps: pre-treating talcum powder with an intercalator to enable the interval between layers of the talcum powder to increase, so that water molecules can immerse into the space between layers of the talcum powder; enabling the layers of the talcum powder to be stripped under the pressure generated through the instant vaporization of the water molecules by using the high temperature and high pressure provided by a bulking machine, so that the talcum powder with a single-layered sheet structure can be obtained. According to the invention, the efficiency is high, the effect is excellent, the sheet structure of the talcum powder cannot be damaged; the prepared single-layered sheet talcum powder is high in additional value and good in functionality, can greatly improve the tensile strength, tensile modulus, bending strength and bending modulus of the composite material under the premise that the loss of impact strength, tenacity and transparency of the product is avoided, is large in surface area and high in activity, can be used as filler to be added in a product in a large amount, reduces the production cost of the product, and has the market application value.

Description

technical field [0001] The invention relates to the field of inorganic non-metallic mineral materials, in particular to a monolithic talc powder and a preparation method thereof. Background technique [0002] Talc powder is one of the most important inorganic chemical products today. Due to the advantages of good chemical stability, low hardness, layered structure, lipophilic and hydrophobic, talc powder can not only play the role of filling, increasing and reducing cost of general fillers, but also enhance the processing performance of these products , mechanical strength and thermodynamic properties, so talc powder is widely used as a filler in papermaking, plastics, paints, ceramics, cosmetics, medicine, rubber, agricultural products, fertilizers and other industries. [0003] According to the data, compared with the composite materials that use non-single-layer layered inorganic materials as filling reinforcement, the composite materials that use single-layer layered st...

Claims

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Application Information

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IPC IPC(8): C09C1/28C09C3/04C09C3/08
Inventor 陈庆李兴文
Owner HAICHENG XINDA MINING
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