Ultra-fine composite modified talc powder body, preparation method and uses thereof

A technology of composite modification and talc powder, applied in the direction of fibrous fillers, etc., can solve the problems of low powder dispersion and surface activity, poor compatibility, poor processing flow performance, etc., to overcome the tendency of agglomeration and good compatibility , the effect of reducing surface energy

Inactive Publication Date: 2009-02-18
芜湖同达新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prepared powder has low dispersibility and surface activity. When used, it has poor compatibility with other organic materials and poor processing fluidity. While filling and increasing, it also affects the quality of the product to a certain extent. Mechanical properties, such as impact strength, or the appearance of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Proportion:

[0023] Talc powder (d50: 0.8um~1um) 60 parts by weight

[0024] Heavy calcium carbonate (d50≤1um) 30 parts by weight

[0025] 1.5 parts by weight of titanate coupling agent

[0026] 1 part by weight of stearic acid

[0027] The model of the titanate coupling agent is NDZ-130, produced by Nanjing Shuguang Company.

[0028] The model of described stearic acid is 1801.

[0029] Its preparation method is:

[0030] Add talc powder (d50: 0.8um~1um) and heavy calcium carbonate (d50≤1um) to the high-speed mixer in turn, stir at high speed and heat up. When the temperature reaches 100°C, keep it warm for 5 minutes, and then add the measured For titanate coupling agent, heat up to 165°C, keep warm for 6 minutes, cool the material to 95°C, transfer the material to a three-roll continuous modification machine, and then measure the stearic acid for further modification, and then discharge.

Embodiment 2

[0032] Proportion:

[0033] Talc powder (d50: 0.8um~1um) 70 parts by weight

[0034] Heavy calcium carbonate (d50: 0.8um~1um) 20 parts by weight

[0035] 1 part by weight of titanate coupling agent

[0036] 1.1 parts by weight of stearic acid

[0037] The model of the titanate coupling agent is NDZ-130, produced by Nanjing Shuguang Company.

[0038] The model of described stearic acid is 1801.

[0039] Its preparation method is:

[0040] Add talc powder (d50: 0.8um~1um) and heavy calcium carbonate (d50≤1um) to the high-speed mixer in turn, stir at high speed and heat up. When the temperature reaches 102°C, keep it warm for 8 minutes, and then add the measured For titanate coupling agent, raise the temperature to 162°C, keep the temperature for 8 minutes, cool the material to 98°C, transfer the material to the three-roll continuous modification machine, and then measure the stearic acid for further modification, and then discharge the material.

Embodiment 3

[0042] Proportion:

[0043] Talc powder (d50: 0.8um~1um) 75 parts by weight

[0044] Heavy calcium carbonate (d50: 0.8um~1um) 15 parts by weight

[0045] Titanate coupling agent 2 parts by weight

[0046] Stearic acid 1.2 parts by weight

[0047] The model of the titanate coupling agent is NDZ-130, produced by Nanjing Shuguang Company.

[0048] The model of described stearic acid is 1801.

[0049] Its preparation method is:

[0050] Add talc powder (d50: 0.8um~1um) and heavy calcium carbonate (d50≤1um) to the high-speed mixer in turn, heat up, when the temperature reaches 110°C, keep it warm for 10 minutes, then add the measured titanate Coupling agent, heat up to 160°C, keep warm for 10 minutes, cool the material to 105°C, transport the material to a three-roller continuous modification machine, and then measure the stearic acid for further modification, and then discharge.

[0051] The particle size of the present invention is detected according to the standard of GB / T...

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PUM

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Abstract

The invention discloses a superfine compound modified talcum powder body, a preparation method and an application thereof. The powder body comprises the following materials by the weight portion: 60-75 portions of talcum powder, 25-35 portions of superfine heavy calcium carbonate powder, 1-2.5 portions of titanium ester coupling agent and 1-1.2 portions of stearic acid. The preparation method includes the following steps: the talc powder is added into a high-speed mixer, then the heavy calcium carbonate is added, the temperature is raised to 100-110 DEG C, the materials are heated for 5-10 minutes; the coupling agent is added, the temperature is raised to 160-165 DEG C, and the materials are heated for 6-10 minutes; the materials are cooled to 95-105 DEG C, and then the stearic acid is added, and mixed evenly to achieve the desired powder body. The powder body can be applied to facia materials and super-tough HIPS materials as well as military packaging materials. Compared with the prior art, the powder body produced by the method has big filling fraction, sound compatibility with other auxiliary materials and strong processing fluidity; in addition to the functions of filling and increment, the powder body can effectively improve the toughness and strength of products.

Description

technical field [0001] The invention relates to an ultrafine composite modified powder, a preparation method and its application, in particular to a toughened ultrafine composite modified talcum powder, a preparation method and its application. technical background [0002] Ultrafine composite modified talc powder (d50: 0.8um~1um) belongs to the category of non-metallic powder materials. The modified non-metallic powder materials have the characteristics of fine particle size, high surface activity and good dispersibility, and can effectively Improving the physical and mechanical properties of some aspects of the product may give some new functions to plastics and other products. Therefore, ultrafine composite modified talc powder has become an indispensable functional material in the fields of automobile manufacturing and plastic packaging. [0003] Usually, the change of the surface properties of non-metallic powder is achieved by coating or coating the surface of the powd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C09C1/00C08L23/12C08L23/06C08L25/06
Inventor 陈永辉卜枝英
Owner 芜湖同达新材料科技有限公司
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