Unlock instant, AI-driven research and patent intelligence for your innovation.

A nano-sio 2 / Silicone modified acrylate emulsion

An acrylate and organosilicon technology, applied in the field of nano-SiO2/organosilicon modified acrylate emulsion, can solve the problems of system instability and condensation, difficult to achieve effective modification, etc., and achieves large steric hindrance, excellent film-forming properties, The effect of enhancing water repellency

Active Publication Date: 2021-03-23
浙江东进新材料有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, silicone acrylic resins are mostly modified by emulsion copolymerization of acrylate monomers and unsaturated silicone coupling agents or to prepare composite emulsions. However, because silicone monomers are easily hydrolyzed and condensed, early crosslinking occurs during the polymerization process. Therefore, the organosilicon weight percentage in the organosilicon-modified acrylate emulsion prepared by this method generally does not exceed 2%, and it is difficult to achieve the purpose of effective modification.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A nano-sio <sub>2</sub> / Silicone modified acrylate emulsion
  • A nano-sio <sub>2</sub> / Silicone modified acrylate emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of nano-SiO 2 / Silicone-modified acrylate emulsion, made of nano-SiO 2 Sol, D 4 / D 4 Vi Emulsion, polymerizable silicone monomer, acrylate monomer, initiator, emulsifier, and water are prepared by emulsion polymerization; in parts by mass, the amount of each component is nano-SiO 2 Sol 7 parts, D 4 / D 4 Vi 23 parts of emulsion, 8 parts of polymerizable silicone monomer, 72 parts of acrylate monomer, 0.7 part of initiator, 9 parts of emulsifier, 360 parts of water;

[0031] nano-SiO 2 The preparation method of silicone modified acrylate emulsion is as follows:

[0032] (1) Add 160 parts of water and 6 parts of emulsifier to the emulsification kettle equipped with a stirring rod, stir well; add acrylate monomer, D 4 / D 4 Vi Emulsion, polymerizable organosilicon monomer, stirred for 30 minutes, fully emulsified to form a pre-emulsion; initiator and 30 parts of water were dissolved to form an initiator aqueous solution, and set aside;

[0033] (2) Add 170...

Embodiment 2

[0043] A kind of nano-SiO 2 / Silicone-modified acrylate emulsion, made of nano-SiO 2 Sol, D 4 / D 4 Vi Emulsion, polymerizable silicone monomer, acrylate monomer, initiator, emulsifier, and water are prepared by emulsion polymerization; in parts by mass, the amount of each component is nano-SiO 2 Sol 11 parts, D 4 / D 4 Vi 30 parts of emulsion, 12 parts of polymerizable silicone monomer, 96 parts of acrylate monomer, 1.2 parts of initiator, 12 parts of emulsifier, 500 parts of water;

[0044] nano-SiO 2 The preparation method of silicone modified acrylate emulsion is as follows:

[0045] (1) Add 240 parts of water and 8 parts of emulsifier to the emulsification kettle equipped with a stirring rod, stir well; add acrylate monomer, D 4 / D 4 Vi Emulsion, polymerizable silicone monomer, stirred for 30 minutes, fully emulsified to form a pre-emulsion; the initiator and 40 parts of water were dissolved to form an aqueous solution of the initiator, and set aside;

[0046] (...

Embodiment 3

[0052] A kind of nano-SiO 2 / Silicone-modified acrylate emulsion, made of nano-SiO 2 Sol, D 4 / D 4 Vi Emulsion, polymerizable silicone monomer, acrylate monomer, initiator, emulsifier, and water are prepared by emulsion polymerization; in parts by mass, the amount of each component is nano-SiO 2 Sol 15 parts, D 4 / D 4 Vi 36 parts of emulsion, 17 parts of polymerizable silicone monomer, 128 parts of acrylate monomer, 1.6 parts of initiator, 15 parts of emulsifier, 680 parts of water;

[0053] nano-SiO 2 The preparation method of silicone modified acrylate emulsion is as follows:

[0054] (1) Add 290 parts of water and 10 parts of emulsifier to the emulsification kettle equipped with a stirring rod, and stir evenly; add acrylate monomer, D 4 / D 4 Vi Emulsion, polymerizable silicone monomer, stirred for 30 minutes, fully emulsified to form a pre-emulsion; initiator and 50 parts of water were dissolved to form an aqueous solution of the initiator, and set aside;

[005...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
water absorptionaaaaaaaaaa
Login to View More

Abstract

The invention discloses a nano-SiO 2 / Organosilicon modified acrylate emulsion, characterized in that: made of nano-SiO 2 Sol, D 4 / D 4 Vi Emulsion, polymerizable silicone monomer, acrylate monomer and initiator, emulsifier, water are prepared by emulsion polymerization; nano-SiO 2 Sol 7-15 parts, D 4 / D 4 Vi 23-36 parts of emulsion, 8-17 parts of polymerizable silicone monomer, 72-128 parts of acrylate monomer, 0.7-1.6 parts of initiator, 9-15 parts of emulsifier, and 360-680 parts of water. The emulsion of the present invention not only has the excellent film-forming properties, light resistance and corrosion resistance of acrylic ester, but also has the excellent heat resistance, water resistance and weather resistance of polysiloxane; the nano silicon dioxide has excellent ultraviolet absorption characteristics , added to the silicone acrylic emulsion through copolymerization not only improves the anti-ultraviolet aging performance of the emulsion, but also acts as a reinforcing particle, which can increase the hardness and mechanical strength of the emulsion film.

Description

technical field [0001] The invention relates to an acrylate emulsion, in particular to a nano-SiO 2 / Organosilicon modified acrylate emulsion belongs to the field of functional acrylate emulsion. Background technique [0002] Emulsion-polymerized acrylate polymers have been widely used in adhesives, coatings and other industries due to their good adhesion, transparency and weather resistance, but at the same time, their poor resistance to high and low temperatures limits their further applications. . Utilizing the characteristics of silicone components such as large Si-O bond energy, low surface energy, and large molecular chain flexibility, modifying polyacrylate to improve the high and low temperature resistance of acrylate polymers has become the main method for modifying acrylate polymers. direction. [0003] The preparation methods of silicone acrylic resin are mainly divided into two categories: physical blending method and chemical modification method. The chemica...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F220/18C08F230/08
CPCC08F292/00C08F220/1804C08F230/08
Inventor 陈明贤孙立新董洪波
Owner 浙江东进新材料有限公司