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Ultra-fine composite modified heavy calcium carbonate powder, preparation method and uses thereof

A technology of heavy calcium carbonate powder and heavy calcium carbonate, which is applied in the direction of fibrous fillers, can solve the problems of powder dispersion, low surface activity, poor compatibility, and poor processing fluidity, etc., to overcome the tendency of agglomeration, Good compatibility, the effect of improving compatibility

Active 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, and has poor compatibility with other organic materials and poor processing fluidity when used. While filling and increasing, it also affects the mechanical properties of the product to a certain extent. properties, such as impact strength, or appearance of the product

Method used

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  • Ultra-fine composite modified heavy calcium carbonate powder, preparation method and uses thereof
  • Ultra-fine composite modified heavy calcium carbonate powder, preparation method and uses thereof
  • Ultra-fine composite modified heavy calcium carbonate powder, preparation method and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Proportion:

[0032] Heavy calcium carbonate (d50≤1um) 90 parts by weight

[0033] Talc powder (d50≤1um) 10 parts by weight

[0034] 1.5 parts by weight of titanate coupling agent

[0035] 1 part by weight of stearic acid

[0036] The model of the titanate coupling agent is NDZ-131, produced by Nanjing Shuguang Company.

[0037] The model of described stearic acid is 1801.

[0038] Its preparation method is:

[0039] Add heavy calcium carbonate (d50≤1um) and talc powder (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 titanate Coupling agent, heat up to 165°C, keep warm for 6 minutes, cool the material to 95°C, transport the material to the three-roll continuous modification machine, and then measure the stearic acid for further modification, and the three-roll continuous powder surface modification The temperature of mechanical modification is contr...

Embodiment 2

[0041] Proportion:

[0042] Heavy calcium carbonate (d50≤1um) 88 parts by weight

[0043] Talc powder (d50≤1um) 12 parts by weight

[0044] 1 part by weight of titanate coupling agent

[0045] 1.1 parts by weight of stearic acid

[0046] The model of the titanate coupling agent is NDZ-131, produced by Nanjing Shuguang Company.

[0047] The model of described stearic acid is 1801.

[0048] Its preparation method is:

[0049] Add heavy calcium carbonate (d50≤1um) and talc powder (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 8 minutes, and then add the measured titanate Coupling agent, heat up to 162°C, keep warm 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 the three-roll continuous powder surface modification The temperature of mechanical modification is contro...

Embodiment 3

[0051] Proportion:

[0052] Heavy calcium carbonate (d50≤1um) 85 parts by weight

[0053] Talc powder (d50≤1um) 15 parts by weight

[0054] Titanate coupling agent 2 parts by weight

[0055] Stearic acid 1.2 parts by weight

[0056] The model of the titanate coupling agent is NDZ-131, produced by Nanjing Shuguang Company.

[0057] The model of described stearic acid is 1801.

[0058] Its preparation method is:

[0059] Add heavy calcium carbonate (d50≤1um) and talc powder (d50≤1um) to the high-speed mixer in turn, stir at high speed and heat up. When the temperature reaches 110°C, keep it warm for 10 minutes, and 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 the three-roll continuous modification machine, and then measure the stearic acid for further modification, and the three-roll continuous powder surface modification The temperature of mechanical modification is controlle...

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Abstract

The invention discloses a superfine compound modified heavy calcium carbonate powder body, a preparation method and an application thereof. The powder body comprises the following materials by the weight portion: 80-90 portions of heavy calcium carbonate (d50 is smaller than or equal to1um), 10-15 portions of talc powder (d50 is smaller than or equal to1um), 1-2 portions of titanium ester coupling agent and 1-1.2 portions of stearic acid. The heavy calcium carbonate is added in the talc powder, the temperature is raised, and then the coupling agent is added, the temperature is raised, cooled evenly, and the stearic acid is added. The powder body is applied to environment-friendly degradative compound modified resin. Compared with the prior art, the produced superfine compound modified heavy micro calcium carbonate is well compatible with other organic carriers and auxiliary materials, and the processing fluidity is sound; in addition to the functions of filling and increment, the mechanical property and the appearance of the products are not influenced; the compound resin made of the superfine compound modified heavy calcium carbonate powder body can be degraded completely and rapidly, and is nontoxic and harmless, and can well meet the requirements of food hygiene.

Description

technical field [0001] The invention relates to an ultrafine composite modified powder, a preparation method and its application, in particular to an ultrafine heavy calcium carbonate powder, a preparation method and its application. technical background [0002] Ultrafine composite modified non-metallic powder (d50≤1um) belongs to the category of non-metallic powder materials. Modified non-metallic powder materials can effectively improve the physical and mechanical properties of certain aspects of products or can endow rubber, coatings , Plastics and other products have some brand-new functions. Therefore, ultrafine composite modified non-metallic powder has become an indispensable functional material in the fields of rubber, coatings, and plastics. [0003] Usually, the change of the surface properties of non-metallic powder is achieved by coating or coating the surface of the powder particles with organic or inorganic chemical substances (ie, surface modifiers). The modi...

Claims

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Application Information

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IPC IPC(8): C08K9/04C09C1/00C08L23/06C08K5/098B29B7/00B29B9/06
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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