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Methacrylate polymer-inorganic composite through-hole material and its preparation method and application

A technology of methacrylate and methyl methacrylate is applied in the field of environmentally friendly porous composite materials and methacrylate polymer-inorganic composite through-hole materials, which can solve the problems of long preparation period, environmental hazards, and easy emulsifier. Elution and other problems, to achieve the effect of excellent air permeability and water permeability

Active Publication Date: 2017-01-18
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These all exist in the elution of inorganic salts, organic solvents and emulsifiers, causing harm to the environment
For example, Chinese Patent Application No. 200710039514.8 "An inverse emulsion template method for preparing open-cell polymer materials" uses water-soluble ammonium persulfate or potassium persulfate as the initiator and non-reactive cationic surfactant as the emulsifier. Open-cell polymer materials are prepared by polymerizing vinyl monomers at 65-75°C for 10-14 hours. Water accounts for 60-98% of the system volume. Easy to elute
Chinese patent application No. 201110370935.5 "Method for preparing porous materials by reversible addition chain scission transfer polymerization of high internal phase emulsion", 201210233736.4 "Method for preparing open-cell submicron porous polymer materials by miniemulsion template method" introduces polymerization at temperatures above 60°C Liquid-phase pore-forming method for forming and preparing porous materials, the polymerization time is as long as 24 to 48 hours, and the weight ratio of water phase is high, the strength of the prepared porous material is low, and the emulsifier is easily eluted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of reactive emulsifiers:

[0035] (1) Preparation of block polyoxyethylene-polyoxypropylene polyether methacrylate

[0036] Add 200g of dichloromethane and 550g of hydroxyl-terminated polyoxyethylene-polyoxypropylene block polyether F127 (polyoxyethylene 70wt%, polyoxypropylene 30wt%) in a 1000mL three-necked flask equipped with a reflux device in a ventilated ice-water bath , average molecular weight 5500, Anqiu Luxing Chemical Development Co., Ltd.), then slowly drop 10.5g of methacryloyl chloride, and drop it in half an hour; then remove the ice-water bath, continue to stir the reaction at room temperature for 24 hours, and remove the by-products under reduced pressure. The product is hydrogen chloride and a solvent to obtain polyoxyethylene-polyoxypropylene block polyether methacrylate PPO-PEO-MA1.

[0037] Add 200g of dichloromethane and 530g of hydroxyl-terminated polyoxyethylene-polyoxypropylene block polyether L63 (polyoxyethylene 30wt%, polyoxyprop...

Embodiment 2

[0043] Preparation of methacrylate polymer powder:

[0044] (1) Add 540g of distilled water and 0.5g of the PPO-PEO-MA1 prepared in Example 1 to a 1000mL three-necked flask equipped with a thermometer, a mechanical stirrer, and a reflux condenser, turn on the stirring, and adjust the stirring speed to 300r / min , the temperature of the water bath was raised to 80°C; then, by feeding at one time, add 104g of methyl methacrylate monomer pre-dissolved with benzoyl peroxide (BPO) (methyl methacrylate (MMA) 100g, BPO 4g) , keep the temperature at 80°C, react for about 2 hours, use a straw to draw a small amount of beads into a small beaker filled with water for observation, if the particles become hard, continue to react for 10-20 minutes to completely react the monomer, stop the reaction, and polymerize with cold water After the product is repeatedly washed several times, it is subjected to suction filtration; finally, the product beads are dried under reduced pressure, and the pow...

Embodiment 3

[0048] Preparation of methacrylate polymer powder coated with inorganic filler:

[0049] (1) Add 30g of calcined kaolin (3000 mesh) to 105g of MMA monomer solution dissolved with 5g of BPO, and ultrasonically disperse with an ultrasonic pulverizer; set the working time to 3s, the intermittent time to 2s, the number of working times to 80 times, and the power to 400w; Then add the ultrasonically dispersed suspension into a 1000mL three-necked flask in which 0.8g of PPO-PEO-MA3 prepared in Example 1 is dissolved in 600g of deionized water, keep the stirring speed of 500r / min, and raise the temperature to 80°C for reaction; React for about 2 hours, use a straw to absorb a small amount of beads and observe them in a small beaker filled with water. If the particles become hard, continue to react for 10-20 minutes to complete the reaction of the monomer, stop the reaction, and wash the polymerization product several times with cold water. Finally, suction filtration is carried out; ...

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Abstract

The invention discloses a methacrylate polymer-inorganic compound through hole material as well as a preparation method and an application thereof. The preparation method comprises the following steps: pouring 70-50 wt% of inorganic fillers-coated methacrylate polymer-aqueous suspension liquor into 30-50 wt% of methacrylate polymer-vinyl monomer-reactive emulsifier-initiation system premixed liquor at 10-30 DEG C, stirring for 0.5-3 minutes to obtain uniformly mixed pouring liquor, finishing pouring of the pouring liquor within 3 minutes, and curing in an environment with the room temperature of 10-30 DEG C for 1-6 hours to obtain the methacrylate polymer-inorganic compound through hole material. The methacrylate polymer-inorganic compound through hole material has the characteristics of low cost, good pouring flowability, quick curing and forming at the room temperature, opening structure, uniformly distributed tiny pores, excellent air and water permeability, relatively high strength, environmental protection and energy conservation, thereby having a wide application prospect.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to an environment-friendly porous composite material, in particular to a methacrylate polymer-inorganic composite through-hole material and its preparation method and application. Background technique [0002] Porous materials include open-cell through-pore materials and closed-cell porous materials. Due to their special periodic structure, high specific surface area, high adsorption, assemblability, and high porosity, they have been used in structural materials, catalysis, and biological , electrochemistry, gas adsorption, chromatographic separation, sensors and other fields have shown a wide range of application prospects. [0003] Through-porous material refers to a solid material with countless micropores and interconnected pores. The pore structure in the material is open and can form complex channels, allowing small molecule gases or fluids to flow through the material. It has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F285/00C08F290/06C08F220/14C08F220/18C08F212/08C08F220/32C08F220/28C08F2/44C08F2/30C08G65/332C08K3/34C08K3/36C08K3/26C08J9/00
Inventor 黄月文王斌
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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