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POSS modified styrene-acrylic emulsion copolymer, preparation method and application

A technology of styrene-acrylic emulsion and copolymer, applied in the direction of coating, etc., can solve the problems of pollution, not suitable for large-scale production, and the existence of solvent environment, etc., and achieve the effect of simple polymerization method, high production efficiency and strong self-cleaning property

Active Publication Date: 2017-12-19
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese invention patent: 201510547051.0, which discloses a superhydrophobic coating containing POSS block acrylate copolymer and its preparation method. This patent uses a solution polymerization method, and there is a solvent that pollutes the environment. Under the current stringent requirements for the environment, this The method is not suitable for large-scale production

Method used

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  • POSS modified styrene-acrylic emulsion copolymer, preparation method and application
  • POSS modified styrene-acrylic emulsion copolymer, preparation method and application
  • POSS modified styrene-acrylic emulsion copolymer, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare a blank sample:

[0029] (1) Mix 25 parts of water, 10 parts of styrene, 10 parts of butyl acrylate, and 1.5-3 parts of emulsifier evenly at low speed (60-80 rpm), heat up to 75°C, and stir for 30 minutes ;

[0030] (2) Mix 1-2 parts of water-soluble initiator with ten times of water;

[0031] (3) Mix 25 parts of water, 10 parts of styrene, 10 parts of butyl acrylate, and 1.5 to 3 parts of emulsifier (OP-10);

[0032] (4) Add the mixture of step (2) and step (3) dropwise to the product of step (1) at the same time, control the dropwise addition in 2.5 hours, and keep the reaction temperature at 85°C;

[0033] (5) After the dropwise addition, the reaction was continued at 80°C for 1 hour, and when the temperature was lowered to 45°C, a pH value regulator was added to adjust the pH value to 7-8, and the material was discharged after cooling down.

[0034] (6) Take 30 parts of the above-prepared emulsion, add 0.5 part of film-forming aid, 3 g of pigment (such as...

Embodiment 2

[0036] (1) Under the condition of low speed, mix 25 parts of water, 10 parts of styrene, 10 parts of butyl acrylate, and 1.5-3 parts of emulsifier evenly, heat up to 75°C, and stir for 30 minutes;

[0037] (2) Mix 1-2 parts of water-soluble initiator with ten times of water;

[0038] (3) Prepare 1 part of POSS (one vinyl heptamethyl POSS);

[0039] (4) Mix 25 parts of water, 10 parts of styrene, 10 parts of butyl acrylate, and 1.5 to 3 parts of emulsifier (OP-10);

[0040] (5) Add the mixture of step (2) and step (4) dropwise to step (1), control the dropwise addition in 2.5 hours, and keep the reaction temperature at 85°C;

[0041] (6) Add half of the POSS in step (3) after 1 hour of reaction for 10 to 30 minutes, and add the remaining half after 2 hours of reaction for 10 to 30 minutes;

[0042] (7) After the dropwise addition, continue to react at 80°C for 1 hour, add a pH value regulator when the temperature is lowered to 45°C, adjust the pH value to 7-8, cool down and d...

Embodiment 3

[0045] (1) Under the condition of low speed, mix 25 parts of water, 10 parts of styrene, 10 parts of butyl acrylate, and 1.5-3 parts of emulsifier evenly, heat up to 75°C, and stir for 30 minutes;

[0046] (2) Mix 1-2 parts of water-soluble initiator with ten times of water;

[0047] (3) 3 parts of POSS (one vinyl heptamethyl POSS);

[0048] (4) Mix 25 parts of water, 10 parts of styrene, 10 parts of butyl acrylate, and 1.5 to 3 parts of emulsifier (OP-10);

[0049] (5) Add the mixture of step (2) and step (4) dropwise to step (1) at the same time, control the dropwise addition in 2.5 hours, and keep the reaction temperature at 85°C;

[0050] (6) Add half of the POSS in step (3) after 1 hour of reaction for 10 to 30 minutes, and add the remaining half after 2 hours of reaction for 10 to 30 minutes;

[0051] (7) After the dropwise addition, continue to react at 80°C for 1 hour, add a pH value regulator when the temperature is lowered to 45°C, adjust the pH value to 7-8, cool ...

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Abstract

The invention discloses a POSS modified styrene-acrylic emulsion copolymer, a preparation method and application. The copolymer comprises the following components in parts by weight: 40 to 60 parts of deionized water, 15 to 20 parts of styrene, 15 to 20 parts of butyl acrylate, 3 to 5 parts of an emulsifying agent, 2 to 7 parts of POSS, 1 to 2 parts of a water-soluble initiator, 0.1 to 0.3 part of a pH value conditioning agent and 3 to 5 parts of other auxiliaries. As an exterior wall coating material, the POSS modified styrene-acrylic emulsion obtained in the invention has the advantages of low surface tension, high pollution resistance and high self-cleaning performance. In the copolymer, an Si-O-Si bond can be formed by POSS and the wall, so that the adhesive force of the styrene-acrylic emulsion as the exterior wall coating is improved.

Description

technical field [0001] The invention relates to a building material exterior wall coating and a preparation method thereof, in particular to a POSS modified styrene-acrylic emulsion copolymer, a preparation method and an application thereof. Background technique [0002] Styrene-acrylic emulsion is mainly an emulsion obtained by emulsion polymerization of styrene and propionate. It has the properties of low cost and low water absorption. The introduction of acrylate improves its impact performance and improves the toughness of the copolymer. At the same time, it has good adhesion, chemical resistance, high gloss, and certain anti-fouling ability, and is widely used in the fields of building exterior wall coatings and other fields. Used as exterior wall paint, with the aggravation of environmental pollution, the increase of particles in the air, the adhesion of particles to the exterior wall paint of buildings makes the surface of the building unsightly, and the surface of th...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F220/18C08F230/08C08F2/30C09D125/14C09D133/08
CPCC08F2/30C08F212/08C08F220/18C09D125/14C09D133/08C08F220/1804C08F230/08
Inventor 程从亮李萍胡先海
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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