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A kind of preparation method of nanometer metal oxide modified heat-expandable microsphere

A technology of thermally expanding microspheres and nano-metals, which is applied in the preparation of microspheres, microcapsule preparations, etc., to achieve the effects of moderate viscoelasticity, simple operation and reduced usage

Active Publication Date: 2021-11-09
山东源邦新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many studies on magnetic polymer materials at home and abroad, but there is still a blank in the field of nano-metal oxide modified thermally expandable microspheres.

Method used

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  • A kind of preparation method of nanometer metal oxide modified heat-expandable microsphere

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The preparation method of the nano-metal oxide modified heat-expandable microspheres consists of the following steps:

[0044] (1) 100 parts by weight of saturated brine (magnesium sulfate / sodium chloride=5 / 5), 0.5 parts by weight of emulsifier NP-10, 0.03 parts by weight of wetting agent sodium diisobutylnaphthalene sulfonate, 20 parts by weight Emulsifying and dispersing agent nano-silica, 0.01 parts by weight of pH regulator 20wt.% hydrochloric acid, 5 parts by weight of functional water-soluble monomer methacrylamide, 0.001 parts by weight of nano-metal oxide and nano-iron oxide are added to the pressure reactor, and nitrogen is exhausted Oxygen, start stirring, control the speed of 1000r / min, raise the temperature to 35°C, stir for 30min, and form the water phase;

[0045] (2) 100 parts by weight of acrylic mixed monomers (1% of methacrylic acid-2-hydroxyethyl ester, 35% of acrylonitrile, 16% of acrylic acid, 48% of methacrylic acid), 20 parts by weight of low boil...

Embodiment 2

[0048] The preparation method of the nano-metal oxide modified heat-expandable microspheres consists of the following steps:

[0049] (1) 100 parts by weight of saturated sodium chloride brine, 2.5 parts by weight of emulsifier OP-10, 0.05 parts by weight of wetting agent sodium methylene bis-naphthalene sulfonate, 5 parts by weight of emulsifying dispersant hydrotalcite, 0.005 parts by weight of Add pH regulator citric acid, 2 parts by weight of functional water-soluble monomer dimethylaminoethyl acrylate, and 0.2 parts by weight of nano-metal oxide nano-alumina to the pressure reactor, nitrogen exhaust oxygen, start stirring, control the speed of 1000r / min, Raise the temperature to 38°C and stir for 30 minutes to form the water phase;

[0050] (2) Mix 100 parts by weight of acrylic acid mixed monomer (glycidyl methacrylate 2%, acrylonitrile 30%, methacrylic acid 68%), 40 parts by weight of low boiling point liquid (18 parts of isooctane, isopentane 22 parts), 2 parts by wei...

Embodiment 3

[0053] The preparation method of the nano-metal oxide modified heat-expandable microspheres consists of the following steps:

[0054] (1) 100 parts by weight of saturated magnesium sulfate brine, 2.0 parts by weight of emulsifier Tween-80, 0.05 parts by weight of wetting agent lauryl alcohol polyoxyethylene ether, 15 parts by weight of emulsifying dispersant nano silicon dioxide, Add 2.0 parts by weight of pH regulator salicylic acid, 3 parts by weight of functional water-soluble monomer methacrylamide, and 0.05 parts by weight of nano-metal oxide nano-zinc oxide into the pressure reactor, nitrogen exhaust oxygen, start stirring, and control the speed of 800r / min, heat up to 40°C, stir for 30 min, and form the water phase;

[0055] (2) Mix 100 parts by weight of acrylic acid mixed monomer (1% dimethylaminoethyl acrylate, 30% acrylonitrile, 69% methacrylic acid), 30 parts by weight of low boiling point liquid (5 parts of isobutane, 5 parts of isooctane 20 parts, 5 parts of pe...

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Abstract

The invention relates to a preparation method of a microsphere foaming agent, in particular to a preparation method of a nanometer metal oxide modified heat-expandable microsphere. Water phase composed of saturated brine, emulsifier, wetting agent, emulsifying dispersant, pH regulator, functional water-soluble monomer, nano metal oxide, etc.; acrylic mixed monomer, low boiling point liquid, crosslinking agent , antioxidants, functional oil-soluble monomers, redox initiation system, etc.; the inorganic-organic polymer composite expanded microspheres were prepared by one-time feeding and ultra-low temperature suspension polymerization, and the shell polymers were treated by metal oxides The surface modification of the material, while maintaining the basic properties of the original expansion multiple, particle size and particle size distribution, increases the thermal conductivity, high temperature heat resistance, and the rigidity of the shell polymer layer. It broadens the application field of heat-expandable microspheres and adapts to more stringent processing conditions.

Description

technical field [0001] The invention relates to a preparation method of a microsphere foaming agent, in particular to a preparation method of a nanometer metal oxide modified heat-expandable microsphere. Background technique [0002] Polymer foaming materials are based on raw materials such as substrates, plasticizers, heat stabilizers, processing aids, and foam regulators, plus auxiliary materials such as foam stabilizers (foam stabilizers), chemical foaming agents, and physical foaming agents. , Through extrusion, injection molding or molding technology, a large number of fine air bubbles appear in the plastic, the volume increases and the density decreases. For example, soft PVC foam material is light in weight, good in softness, and has the functions of cushioning, sound absorption, shock absorption, heat preservation, and filtration. It is widely used in advertising, electronics, home appliances, automobiles, sports and leisure, decorative materials, yachts, aerospace, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/06C08F220/48C08F220/20C08F220/56C08F222/14C08F222/40C08F220/32C08F220/34C08F220/54C08F2/44C08F2/18C08K3/22B01J13/14C08J9/32C08L27/06C08L25/06C08L75/04
CPCB01J13/14C08F2/18C08F2/44C08F220/06C08J9/32C08J2325/06C08J2327/06C08J2375/04C08K3/22C08K2003/2227C08K2003/2272C08K2003/2296C08K2201/011
Inventor 呼建强姜丽娜马超刘翰卿张振东吴凯
Owner 山东源邦新材料股份有限公司
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