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Polyacrylic ester/inorganics ó±/inorganics ó� ternary compound particle and process for producing the same

A polyacrylate and ternary composite technology is applied in the field of preparation of polymer composite materials, which can solve the problems of difficulty in preparing polymer/inorganic composite materials, narrow selection of inorganic particles, and the like. effect of industrialization

Inactive Publication Date: 2004-03-17
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can prepare polymer / inorganic composites with strong interaction, but the selection range of inorganic particles is narrow. For inorganic particles with inert surface, such as calcium carbonate, it is difficult to prepare strong interaction. Functional polymer / inorganic composites
[0007] In addition to their own characteristics, the above methods all have such shortcomings: the prepared composite particles generally only involve the compounding of a single polymer and a single inorganic substance, and it is difficult to give full play to the complementary structure and function of the composite particles.

Method used

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  • Polyacrylic ester/inorganics ó±/inorganics ó� ternary compound particle and process for producing the same
  • Polyacrylic ester/inorganics ó±/inorganics ó� ternary compound particle and process for producing the same
  • Polyacrylic ester/inorganics ó±/inorganics ó� ternary compound particle and process for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Add 30 g of silicon dioxide and 300 g of deionized water into a three-necked bottle equipped with a thermometer, a stirrer and a dropping funnel, raise the temperature to 50°C, and stir for 10 minutes to form a silicon dioxide hydrosol. Take 55.5g of calcium chloride and 53g of sodium carbonate, and dissolve them with 100g and 300g of deionized water respectively to form a solution. Sodium carbonate solution was added to the above-mentioned silica sol, and then calcium chloride solution was added dropwise to the system at a rate of 0.5 g / min through the dropping funnel. After the dropwise addition was complete, the reaction was carried out at a constant temperature for 2 hours, and then the temperature was lowered to discharge. Separate by vacuum filtration, and wash the precipitate repeatedly with deionized water to remove the generated NaCl. Dry at 60°C to get CaCO 3 / SiO 2 Binary composite particles. CaCO was tested separately by BET method 3 , SiO 2 , CaCO...

Embodiment 2

[0042] (1) prepare CaCO by the same steps and formula as in Example 1 (1) 3 / SiO 2 Binary composite particles.

[0043] (2) Weigh the resulting CaCO prepared by (1) 3 / SiO 2 Add 10 g of binary composite particles, 0.5 g of silane coupling agent, and 30 g of ethanol into a three-necked bottle equipped with a thermometer, a stirrer, and a reflux condenser, raise the temperature to 50° C., stir for 6 hours, and then discharge. Ethanol was removed by vacuum filtration, and unreacted silane coupling agent was removed by washing with ethanol. Dry at a temperature of 50°C and grind to obtain modified CaCO 3 / SiO 2 Binary composite particles.

[0044] (3) Add the modified CaCO prepared by (2) sequentially to the above equipment 3 / SiO 2 10 g of binary composite particles, 0.8 g of sodium lauryl sulfate, and 80 g of deionized water were heated up to 40° C. and stirred for 20 minutes; then 30 g of butyl acrylate and 0.3 g of a redox initiator were sequentially added. After 20 m...

Embodiment 3

[0046] (1) Add 6 g of silicon dioxide and 100 g of deionized water into a three-necked bottle equipped with a thermometer, a stirrer and a dropping funnel, raise the temperature to 50°C, and stir for 10 minutes to form a silicon dioxide hydrosol. Take 55.5g of calcium chloride and 53g of sodium carbonate, and dissolve them with 100g and 300g of deionized water respectively to form a solution. Sodium carbonate solution was added to the above-mentioned silica sol, and then calcium chloride solution was added dropwise to the system at a rate of 0.5 g / min through the dropping funnel. After the dropwise addition was complete, the reaction was carried out at a constant temperature for 2 hours, and then the temperature was lowered to discharge. Separate by vacuum filtration, and wash the precipitate repeatedly with deionized water to remove the generated NaCl. Dry at 60°C to get CaCO 3 / SiO 2 Binary composite particles.

[0047] (2) by the same steps and formula modified CaCO as ...

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Abstract

The present invention features that inorganic matter I produced with matter an and matter B through in-situ reaction in hydrosol of porous inorganic matter II and the porous inorganic matter II form the composite binary inorganic matter I / inorganic matter II particle via adsorption; the composite particle is modified with silane coupling agent; the modified composite particle is mixed with acrylate monomer, emulsifier, initiator and deionized water in a three-necked bottle; and the mixture is stirred and heated to 60-80 deg.c for reaction for 3-6 hr before being lowered in temperature and discharged. After precipitation in water solution of calcium chloride of 1-10 % concentration, repeated washing with deionized water to eliminate emulsifier and vacuum stoving at 50 deg.c, the ternary composite polyacrylate / inorganic matter I / inorganic matter II particle with relatively strong mutual effect is obtained.

Description

1. Technical field [0001] The invention relates to a polyacrylate / inorganic substance I / inorganic substance II ternary composite particle and a preparation method thereof, belonging to the field of preparation of polymer composite materials. 2. Background technology [0002] At present, the preparation methods of polymer / inorganic composite materials mainly include the following types: [0003] 1. Direct blending of polymers and inorganic particles (Hu Ping, Fan Shoushan, etc., Application of Engineering Plastics, 1998, 26(1): 1; S. Maede, S.P. Armes, Synth. Meta., 1995, 73: 151). This method is widely used because of its simple preparation and convenient operation, but the two phases of polymer and inorganic particles are easy to separate, resulting in a decrease in the performance of the material. Although the compatibility of the two phases can be improved by modifying the surface of the inorganic particles, the stability of the material is still not very good. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/44C08L33/08
Inventor 淡宜江龙
Owner SICHUAN UNIV