阅读说明：本技术 一种有机-无机纳米复合膜的制备方法 (Preparation method of organic-inorganic nano composite film ) 是由 郑小平 张佩峰 张星 祁鹏堂 毛生红 于 2020-08-12 设计创作，主要内容包括：本发明公开了一种有机-无机纳米复合膜的制备方法,包括如下步骤：按重量份称取：聚氨酯乳液10～30份；含氟类添加剂0.5～1份；笼型聚倍半硅氧烷1～3份；聚醚亚胺0.5～2份；无机纳米粒子1～3份；丙烯腈-苯乙烯共聚物接枝马来酸酐0.3～0.5份；将称取的无机纳米粒子通过超声波振荡分散于聚氨酯乳液中形成无机纳米粒子分散液；将无机纳米粒子分散液与称取的含氟类添加剂、笼型聚倍半硅氧烷、聚醚亚胺、丙烯腈-苯乙烯共聚物接枝马来酸酐在0.6MPa的压力下混合后,经喷枪喷射在基板上形成复合膜。本发明所得的有机-无机纳米复合膜具有优良的韧性、加工性能、耐热性、耐腐蚀性以及优异的力学性能。(The invention discloses a preparation method of an organic-inorganic nano composite film, which comprises the following steps: weighing the following components in parts by weight: 10-30 parts of polyurethane emulsion; 0.5-1 part of fluorine-containing additive; 1-3 parts of cage-type polysilsesquioxane; 0.5-2 parts of polyether imine; 1-3 parts of inorganic nanoparticles; 0.3-0.5 part of acrylonitrile-styrene copolymer grafted maleic anhydride; dispersing the weighed inorganic nanoparticles in polyurethane emulsion through ultrasonic oscillation to form inorganic nanoparticle dispersion liquid; mixing the inorganic nano particle dispersion liquid with the weighed fluorine-containing additive, cage type polysilsesquioxane, polyether imide and acrylonitrile-styrene copolymer grafted maleic anhydride under the pressure of 0.6MPa, and spraying the mixture on a substrate by a spray gun to form the composite film. The organic-inorganic nano composite film obtained by the invention has excellent toughness, processability, heat resistance, corrosion resistance and excellent mechanical property.)

1. A preparation method of an organic-inorganic nano composite film is characterized by comprising the following steps:

s1, weighing the following components in parts by weight:

10-30 parts of polyurethane emulsion; 0.5-1 part of fluorine-containing additive; 1-3 parts of cage-type polysilsesquioxane; 0.5-2 parts of polyether imine; 1-3 parts of inorganic nanoparticles; 0.3-0.5 part of acrylonitrile-styrene copolymer grafted maleic anhydride;

s2, dispersing the weighed inorganic nanoparticles in polyurethane emulsion through ultrasonic oscillation to form inorganic nanoparticle dispersion liquid;

s3, placing the obtained inorganic nanoparticle dispersion liquid and the weighed fluorine-containing additive, cage-type polysilsesquioxane, polyether imine and acrylonitrile-styrene copolymer grafted maleic anhydride into a high-speed mixing stirrer, stirring at a constant speed for 5-7 hours under the pressure of 0.6MPa, and spraying on a substrate through a spray gun to form the composite film.

2. The method according to claim 1, wherein the inorganic nanoparticles are nanosilica.

3. The method of claim 1, wherein the fluorine-containing additive is a perfluoroalkyl acrylic additive.

4. The method for preparing an organic-inorganic nanocomposite film according to claim 1, wherein in step S1, the following components are weighed in parts by weight:

10 parts of polyurethane emulsion; 0.5 part of fluorine-containing additive; 1 part of cage polysilsesquioxane; 0.5 part of polyether imine; 1 part of inorganic nano particles; 0.3 part of acrylonitrile-styrene copolymer grafted maleic anhydride.

5. The method for preparing an organic-inorganic nanocomposite film according to claim 1, wherein in step S1, the following components are weighed in parts by weight:

30 parts of polyurethane emulsion; 1 part of fluorine-containing additive; 3 parts of cage-type polysilsesquioxane; 2 parts of polyether imine; 3 parts of inorganic nano particles; 0.5 part of acrylonitrile-styrene copolymer grafted maleic anhydride.

6. The method for preparing an organic-inorganic nanocomposite film according to claim 1, wherein in step S1, the following components are weighed in parts by weight:

20 parts of polyurethane emulsion; 0.75 part of fluorine-containing additive; 2 parts of cage-type polysilsesquioxane; 1.25 parts of polyether imine; 2 parts of inorganic nano particles; 0.4 part of acrylonitrile-styrene copolymer grafted maleic anhydride.

Technical Field

The invention relates to a production process of a nano composite film, in particular to a preparation method of an organic-inorganic nano composite film.

Background

The organic/inorganic nano composite film has potential application prospect in the aspects of photoelectric devices, solar cells, sensors, separation membranes, catalysis and the like.

Disclosure of Invention

The invention aims to provide a preparation method of an organic-inorganic nano composite film, and the obtained organic-inorganic nano composite film has excellent toughness, processability, heat resistance, corrosion resistance and excellent mechanical property.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows.

A preparation method of an organic-inorganic nano composite film comprises the following steps:

s1, weighing the following components in parts by weight:

10-30 parts of polyurethane emulsion; 0.5-1 part of fluorine-containing additive; 1-3 parts of cage-type polysilsesquioxane; 0.5-2 parts of polyether imine; 1-3 parts of inorganic nanoparticles; 0.3-0.5 part of acrylonitrile-styrene copolymer grafted maleic anhydride;

s2, dispersing the weighed inorganic nanoparticles in polyurethane emulsion through ultrasonic oscillation to form inorganic nanoparticle dispersion liquid;

s3, placing the obtained inorganic nanoparticle dispersion liquid and the weighed fluorine-containing additive, cage-type polysilsesquioxane, polyether imine and acrylonitrile-styrene copolymer grafted maleic anhydride into a high-speed mixing stirrer, stirring at a constant speed for 5-7 hours under the pressure of 0.6MPa, and spraying on a substrate through a spray gun to form the composite film.

Further, the inorganic nano particles are nano silicon dioxide.

Further, the fluorine-containing additive is a perfluoroalkyl acrylic additive.

Preferably, in the step S1, the following components are weighed according to parts by weight:

10 parts of polyurethane emulsion; 0.5 part of fluorine-containing additive; 1 part of cage polysilsesquioxane; 0.5 part of polyether imine; 1 part of inorganic nano particles; 0.3 part of acrylonitrile-styrene copolymer grafted maleic anhydride.

Preferably, in the step S1, the following components are weighed according to parts by weight:

30 parts of polyurethane emulsion; 1 part of fluorine-containing additive; 3 parts of cage-type polysilsesquioxane; 2 parts of polyether imine; 3 parts of inorganic nano particles; 0.5 part of acrylonitrile-styrene copolymer grafted maleic anhydride.

Preferably, in the step S1, the following components are weighed according to parts by weight:

20 parts of polyurethane emulsion; 0.75 part of fluorine-containing additive; 2 parts of cage-type polysilsesquioxane; 1.25 parts of polyether imine; 2 parts of inorganic nano particles; 0.4 part of acrylonitrile-styrene copolymer grafted maleic anhydride.

The invention has the following beneficial effects:

the obtained organic-inorganic nano composite film has excellent toughness, processability, heat resistance, corrosion resistance and excellent mechanical property.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the invention is further described in detail below with reference to examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.