阅读说明：本技术 一种pc隔热天窗及其生产工艺 (PC heat-insulation skylight and production process thereof ) 是由 陶海鹰 于 2019-11-06 设计创作，主要内容包括：本发明涉及一种PC隔热天窗的生产工艺,包括以下步骤：注塑成型；表面处理；丝网印刷；一次烘烤；组装；热压；二次烘烤。该生产工艺制得的隔热天窗可减重40%~50%,可达到玻璃无法做到的造型,紫外线阻隔:100%,红外阻隔:90%,透光率:70-85%以上。(The invention relates to a production process of a PC heat-insulation skylight, which comprises the following steps: injection molding; surface treatment; screen printing; primary baking; assembling; hot pressing; and (5) secondary baking. The heat-insulation skylight manufactured by the production process can reduce weight by 40-50%, can achieve the shape which cannot be achieved by glass, and has the ultraviolet ray blocking rate of 100%, the infrared ray blocking rate of 90% and the light transmittance rate of more than 70-85%.)

1. A production process of a PC heat insulation skylight is characterized in that: comprises the following steps

Injection molding: forming a plane PC plate by using PC and ABS as raw materials through an injection molding machine, wherein the injection molding melting temperature is 220-260 ℃, and the injection molding pressure is 60-130 MPa;

surface treatment: carrying out plasma treatment on an area to be printed in the PC board;

screen printing: carrying out silk-screen printing on an area to be printed in the PC board;

primary baking: placing the printed PC board into an oven for baking;

assembling: a liquid crystal film is arranged in an interlayer between two PC boards, and the PC boards and the liquid crystal film are adhered;

hot pressing: carrying out hot pressing on the combined product, wherein the hot pressing temperature is 180-200 ℃;

secondary baking: and (5) baking the hot-pressed product at high temperature.

2. The production process of the PC heat-insulating skylight of claim 1, characterized in that: the temperature of the mold in the injection molding process is 70-90 ℃.

3. The production process of the PC heat-insulating skylight of claim 1, characterized in that: the screen-printed pigment comprises ink, a diluent and a curing agent, wherein the ink: diluent agent: the mixing ratio of the curing agent is 10:1: 1.

4. The process for producing a heat-insulating skylight of claim 1, wherein: the screen printing screen is 200 mesh.

5. The production process of the PC heat-insulating skylight of claim 1, characterized in that: the primary baking temperature is 75-80 ℃, and the baking time is 15-25 min.

6. The production process of the PC heat-insulating skylight of claim 1, characterized in that: the liquid crystal film used in the assembly is one of a black liquid crystal film, a gray liquid crystal film or a white liquid crystal film.

7. The production process of the PC heat-insulating skylight of claim 1, characterized in that: the secondary baking temperature is 180-190 ℃; the baking time is 27-33 min.

8. The production process of the PC heat-insulating skylight of claim 1, characterized in that: and cutting the product subjected to secondary baking into the required size by adopting five shafts, wherein the suction force of the five shafts is 2-6 MPa.

9. The production process of the PC heat-insulating skylight of claim 1, characterized in that: the mixing ratio of PC to ABS was 2.5: 1.2.

10. A PC heat insulating skylight made based on the method of claim 1.

Technical Field

The invention relates to a heat-insulating skylight, in particular to a PC heat-insulating skylight and a production process thereof.

Background

At present, most car factories select heat-insulating skylights in the market or double-layer 3mm glass with a 0.76mm PVB glue in the middle to make the laminated glass, and the laminated glass is made of integral glass, has heavy load, has great influence on the fuel economy of automobiles and new energy automobiles and has no function of blocking ultraviolet rays, and car owners adopt a rear film pasting mode and the film pasting does not have a dimming function.

Disclosure of Invention

The invention provides a production process of a PC heat-insulation skylight, aiming at solving the problems that the existing heat-insulation skylight is heavy in load and has no ultraviolet and infrared ray blocking function, the heat-insulation skylight produced by the production process can reduce weight by 40-50%, can achieve the shape which cannot be achieved by glass, and has 100% of ultraviolet blocking, 90% of infrared blocking and more than 70-85% of light transmittance.

The technical scheme adopted by the invention is as follows: the production process of the PC heat-insulation skylight comprises the following steps

Injection molding: forming a plane PC plate by using PC and ABS as raw materials through an injection molding machine, wherein the injection molding melting temperature is 220-260 ℃, and the injection molding pressure is 60-130 MPa;

surface treatment: carrying out plasma treatment on an area to be printed in the PC board;

screen printing: carrying out silk-screen printing on an area to be printed in the PC board;

primary baking: placing the printed PC board into an oven for baking;

assembling: a liquid crystal film is arranged in an interlayer between two PC boards, and the PC boards and the liquid crystal film are adhered;

hot pressing: carrying out hot pressing on the combined product, wherein the hot pressing temperature is 180-200 ℃;

secondary baking: and (5) baking the hot-pressed product at high temperature.

Further, the temperature of the mold in the injection molding process is 70-90 ℃.

Further, the pigment for screen printing comprises ink, diluent and curing agent, wherein the ink: diluent agent: the mixing ratio of the curing agent is 10:1: 1.

Further, the screen printing screen is selected to be 200 meshes.

Further, the primary baking temperature is 75-80 ℃, and the baking time is 15-25 min.

Further, the liquid crystal film used in the assembly is one of a black liquid crystal film, a gray liquid crystal film or a white liquid crystal film.

Further, the secondary baking temperature is 180-190 ℃; the baking time is 27-33 min.

Further, the product after secondary baking is cut into the required size by five shafts, and the suction force of the five shafts is 2MPa-6 MPa.

The invention also provides the PC heat-insulation skylight prepared by the method.

The beneficial effects produced by the invention comprise: the PC skylight of the invention: 1. there is the outer separation visible light of car by the soft visible light of interior by gentle. 2. The infrared ray barrier can achieve cooling in summer when the infrared ray barrier reaches 90 percent, and the ultraviolet ray barrier can achieve 100 percent and achieve warming in winter; 3. compared with the traditional skylight, the weight can be reduced by 40-50%, and experiments prove that the fuel economy can be improved by 1-2% when the aerodynamic efficiency is improved by 10%; 4. the safety performance of the PC heat-insulation skylight is far higher than that of a common glass skylight.

Detailed Description

The present invention is explained in further detail with reference to specific embodiments, but it should be understood that the scope of the present invention is not limited to the specific embodiments.