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Functional calcium carbonate with modified surface activity and preparation method of functional calcium carbonate

A surface-active, calcium carbonate technology, used in chemical instruments and methods, dyed organosilicon compound treatment, inorganic pigment treatment, etc., can solve the problems of difficult processing, poor stability, low organic polymer strength, etc. Effect

Inactive Publication Date: 2018-06-08
贺州市星辉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polymer / inorganic particle composite material is a new type of material, which overcomes the shortcomings of simple inorganic particles that are not easy to process, low strength and poor stability of organic polymers, etc.

Method used

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  • Functional calcium carbonate with modified surface activity and preparation method of functional calcium carbonate
  • Functional calcium carbonate with modified surface activity and preparation method of functional calcium carbonate
  • Functional calcium carbonate with modified surface activity and preparation method of functional calcium carbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The present embodiment is made of the following raw materials by weight:

[0020]

[0021] Described calcium carbonate is 500 purpose calcium carbonate powder;

[0022] The content of the boric acid polyol ester coupling agent is 40%;

[0023] The specific technical scheme of the preparation method of functional calcium carbonate is as follows:

[0024] (1) Take 100g of 500 mesh calcium carbonate powder, add water and stir, and configure it into a 20% calcium carbonate aqueous emulsion solution;

[0025] (2) In the above calcium carbonate aqueous emulsion solution system, add 1g of vinyl triethoxysilane coupling agent, 1g of propylene glycol monostearate coupling agent, 2g of polymethylstyrene auxiliary, 1g of hexamethylene Dioctyl dioate plasticizer, continue to stir evenly;

[0026] (3) Control the temperature of the system at 50°C and stir for 1h;

[0027] (4) Finally, add 1 g of BASF UV-234 antioxidant, and stir at 60 °C for 1 h;

[0028] ⑸ After the reactio...

Embodiment 2

[0030] The present embodiment is made of the following raw materials by weight:

[0031]

[0032] Described calcium carbonate is 600 purpose calcium carbonate powder;

[0033] The content of the boric acid polyol ester coupling agent is 50%;

[0034] The specific technical scheme of the preparation method of functional calcium carbonate is as follows:

[0035] (1) Pour 10kg of 600 mesh calcium carbonate powder into a heating and stirring device, add water and stir, and configure it into a 25% calcium carbonate aqueous emulsion solution;

[0036] (2) In the above calcium carbonate aqueous emulsion solution system, add 0.15kg of vinyl triethoxysilane coupling agent, 0.15kg of propylene glycol monostearate coupling agent, 0.3kg of polymethylstyrene auxiliary, 0.2 kg of dioctyl adipate plasticizer, continue to stir evenly;

[0037] (3) Control the temperature of the system to 55°C and stir for 1.5h;

[0038] (4) Finally, add 0.2kg of BASF UV-234 anti-aging agent, and stir a...

Embodiment 3

[0041] The present embodiment is made of the following raw materials by weight:

[0042]

[0043] Described calcium carbonate is 800 purpose calcium carbonate powder;

[0044] The content of the boric acid polyol ester coupling agent is 60%;

[0045] The specific technical scheme of the preparation method of functional calcium carbonate is as follows:

[0046] (1) Pour 100kg of 800-mesh calcium carbonate powder into the heating mixer, add water and stir evenly, and configure it into a 30% calcium carbonate aqueous emulsion solution;

[0047] (2) In the above-mentioned calcium carbonate aqueous emulsion solution system, add 3kg vinyl triethoxysilane coupling agent, 3kg propylene glycol monostearate coupling agent, 5kg polymethylstyrene auxiliary, 3kg hexanediol. dioctyl acid plasticizer, continue to stir evenly;

[0048] (3) Control the temperature of the system to 60°C and stir for 2h;

[0049] (4) Finally, add 3kg of BASF UV-234 antioxidant, and stir at 70°C for 2 hour...

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Abstract

The invention discloses functional calcium carbonate with modified surface activity and a preparation method of the functional calcium carbonate. Raw materials for preparing the functional calcium carbonate mainly include: calcium carbonate, a vinyl triethoxy silane coupling agent, a propylene glycol monostearate coupling agent, a polymethyl styrene additive, dioctyl adipate plasticizer and a BASFUV-234 anti-aging agent, and the preparation method of the functional calcium carbonate comprises the steps of: first mixing calcium carbonate powder with water so as to obtain a calcium carbonate aqueous emulsion solution, adding the vinyl triethoxy silane coupling agent, propylene glycol monostearate coupling agent, polymethyl styrene additive and dioctyl adipate plasticizer under constant stirring, performing even stirring and mixing at a certain temperature, then adding the BASF UV-234 anti-aging agent, and finally performing dehydration and drying so as to obtain the functional calcium carbonate with the modified surface activity. The calcium carbonate powder has has good properties of dispersibility, compatibility and stability.

Description

technical field [0001] The invention belongs to the technical field of calcium carbonate preparation, and in particular relates to a surface modification of calcium carbonate using a silane coupling agent / hydroxystearic acid and a method thereof. Background technique [0002] Calcium carbonate is a kind of important functional inorganic filler, which has the advantages of low price, abundant reserves, stable performance, easy processing and non-toxicity. With the rapid development of composite materials and the worldwide energy shortage, the price of synthetic resins based on petroleum continues to rise, requiring people to add more inorganic fillers to composite products such as plastics and rubber to further reduce product costs. To save the amount of resin, it is required to ensure or improve the processing performance and physical and mechanical properties of the product while adding more inorganic fillers. However, its surface has strong hydrophilic hydroxyl groups, sh...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/08C09C3/10C09C3/12
CPCC09C1/021C01P2006/22C09C3/006C09C3/08C09C3/10C09C3/12
Inventor 孙炜炜黄鹏腾
Owner 贺州市星辉科技有限公司
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