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Modified calcium carbonate filler applicable to plastics and preparation method of modified calcium carbonate filler

A calcium carbonate filler, calcium carbonate technology, applied in fibrous fillers, chemical instruments and methods, inorganic pigment treatment and other directions, can solve the problems of plastic mechanical properties, mechanical properties and other problems, and achieve the effect of good dispersibility and simple process

Inactive Publication Date: 2018-06-01
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

[0003] In order to overcome the disadvantage of reducing the mechanical properties of plastics by adding calcium carbonate fillers to plastic products, the present invention uses other modifiers such as silane coupling agents and plasticizers to modify the surface of calcium carbonate, so that calcium carbonate powder can be used as plastic When used as a filler in products, it has good dispersion and cross-linking properties, and when added to plastic products, the mechanical properties will not be reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] S1: Take 1g of 3-(2,3-glycidoxypropyl)trimethoxysilane and pour it into 3g of water to dissolve, then add 3g of ethanol, stir, then add acetic acid, and adjust the pH value of the solution to 4. ,spare.

[0018] S2: Get 100g of 400-mesh heavy calcium carbonate powder, add water and stir, and configure it into a calcium carbonate suspension solution, add 1g of 3-(2,3-glycidoxypropyl) prepared in S1 to the calcium carbonate suspension solution successively Trimethoxysilane coupling agent, 1g of propylene glycol monostearate coupling agent, 3g of polymethylstyrene additives, 1g of diethylene glycol dibenzoate plasticizer, 1g of maleic anhydride branch compatibilizer, stir evenly, heat the solution at 50°C and stir for 2 hours, then add 1g of ascorbic acid, raise the heating temperature to 60°C and stir for 2 hours, then dehydrate the mixed system to obtain calcium carbonate wet material, finally Dry the wet material at 110°C, and cool after drying to obtain the modified c...

Embodiment 2

[0020] S1: Take 1g of 3-(2,3-glycidoxypropyl)trimethoxysilane and pour it into 3.5g of water to dissolve, then add 3.5g of ethanol, stir, then add acetic acid, adjust the pH value of the solution to 4.5 That's it, spare.

[0021] S2: Get 100g of 420-mesh heavy calcium carbonate powder, add water and stir, configure calcium carbonate suspension solution, add 1.5g of 3-(2,3-glycidoxypropyl) trimethyl prepared in S1 in calcium carbonate suspension solution Oxygen silane coupling agent, 1.5g propylene glycol monostearate coupling agent, 4g polymethylstyrene auxiliary agent, 1.5g diethylene glycol dibenzoate plasticizer, 1.5g maleic anhydride Graft compatibilizer, stir evenly, heat the solution at 55°C and stir for 1.5h, then add 1.5g of ascorbic acid, raise the heating temperature to 65°C and stir for 1.5h, then dehydrate the mixed system to obtain calcium carbonate Wet material, finally dry the wet material at 115°C, cool after drying to obtain modified calcium carbonate filler ...

Embodiment 3

[0023] S1: Take 1g of 3-(2,3-glycidoxypropyl)trimethoxysilane and pour it into 4g of water to dissolve, then add 4g of ethanol, stir, then add acetic acid, adjust the pH value of the solution to 5 ,spare.

[0024] S2: Get 100g of 450 mesh heavy calcium carbonate powder, add water and stir, configure calcium carbonate suspension solution, add 2g of 3-(2,3-glycidoxypropyl) trimethyl prepared in S1 in calcium carbonate suspension solution Oxygen silane coupling agent, 2g of propylene glycol monostearate coupling agent, 5g of polymethylstyrene auxiliary agent, 2g of diethylene glycol dibenzoate plasticizer, 2g of maleic anhydride graft Compatibilizer, stir evenly, heat the solution at 60°C and stir for 1 hour, then add 2g of ascorbic acid, raise the heating temperature to 70°C and stir for 1 hour, then dehydrate the mixed system to obtain calcium carbonate wet material, and finally add The wet material is dried at 120°C, and then cooled to obtain modified calcium carbonate powder...

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PUM

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Abstract

The invention discloses modified calcium carbonate filler applicable to plastics and a preparation method of the modified calcium carbonate filler. In order to overcome defect of reduction of mechanical property of a plastic product due to the fact that the calcium carbonate filler is added to the plastic product, calcium carbonate is subjected to surface modification treatment by modifying agentssuch as a 3-(2,3-epoxypropoxypropyl)trimethoxysilane coupling agent, a propylene glycol monostearate coupling agent, a diethylene glycol dibenzoate plasticizer and the like, so that calcium carbonatepowder has better dispersity and cross-linking property when taken as the filler of the plastic product, and the preparation process is simple.

Description

technical field [0001] The invention belongs to the technical field of modification and preparation of calcium carbonate, and in particular relates to modifying a calcium carbonate filler suitable for plastics by using a silane coupling agent, a plasticizer, and the like and a method thereof. Background technique [0002] With the increasingly widespread use of plastic products, the output of plastic products is also increasing. The calcium carbonate powder of various specifications used by my country's plastic industry every year must be at least 400,000 tons. With the continuous rise of synthetic resin prices, Therefore, the eyes of many plastic processing enterprises coincidentally fall on the cheap calcium carbonate powder material. Using calcium carbonate powder as a filler can reduce the amount of resin used, thereby reducing product production costs and improving market competitiveness. The addition of calcium carbonate powder can also improve the heat resistance of p...

Claims

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Application Information

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IPC IPC(8): C08K9/06C08K9/04C08K3/26C09C1/02C09C3/08C09C3/10C09C3/12
CPCC08K9/06C01P2006/22C08K3/26C08K9/04C08K9/08C08K2003/265C09C1/021C09C3/006C09C3/08C09C3/10C09C3/12
Inventor 孙炜炜黄鹏腾
Owner 贺州市星辉科技有限公司
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