Sunlight hollow board and manufacturing method thereof

An empty board, sunlight technology, applied in the field of sunlight board, can solve the problems of easy damage and easy falling off of the UV absorber protective layer, so as to reduce the production cost and solve the effect of layering and falling off.

Inactive Publication Date: 2008-11-05
SHANGHAI HUILI TUVGAL SHEETAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a hollow solar panel on the one hand, to solve the problems of the current anti-ultraviolet polycarbonate hollow panel, which is easy to be damaged, and the protective layer of the ultraviolet absorber is easy to fall off.

Method used

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  • Sunlight hollow board and manufacturing method thereof
  • Sunlight hollow board and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0020] see figure 1 . A kind of sunshine hollow board, comprising sunshine hollow board body 1, ultraviolet absorber protective layer 21,22, polycarbonate hollow board comprises hollow part 3, hollow part 3 is filled with compressed air; ultraviolet absorber protective layer 21, 22 passes through The extrusion method is used to form the upper and lower surfaces of the sunshine hollow board body, with a thickness of 30 microns to 50 microns. The sunshine hollow board of this embodiment has double-sided ultraviolet absorber protective layers.

Embodiment 2

[0022] see figure 2 . A hollow sunlight board, comprising a hollow sunlight board body 1, a UV absorber protective layer 21, the polycarbonate hollow board includes a hollow part 3, and the hollow part 3 is filled with compressed air; the UV absorber protective layer 21 is formed by a co-extrusion method On the upper surface of the solar hollow board body, the thickness is 30 microns to 50 microns. The sunlight hollow board of this embodiment has a single-sided ultraviolet absorber protective layer.

Embodiment 3

[0024] The ultraviolet absorber that adopts is K-6397, manufactures the sunlight hollow plate with 4cm thickness, wherein the thickness of ultraviolet absorber layer is 30 microns. The PC main material and the ultraviolet absorber are melted and extruded in the extruder at 260°C and 240°C respectively, merged in the mold, and shaped by the shaping table. The shaping temperature is 60°C, and the upper and lower sides of the shaping table are vacuumed to increase the surface finish. In addition, compressed air with a pressure of 1.5 Bar is blown into the hollow part through the mold to prevent collapse, and finally annealed at 120°C to obtain qualified products. The details of the annealing stage are as follows: After setting, the temperature is raised to 120°C after 15-20 seconds, and the temperature is maintained at 120°C for 1.2-1.5 minutes, and then naturally cooled.

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Abstract

The invention relates to a sunlight plate (polycarbonate plate), particularly a sunlight hollow plate; the invention also relates to a method for preparing the sunlight hollow plate, which is characterized by including a sunlight hollow plate body, a ultraviolet absorber protective layer, wherein the ultraviolet absorber protective layer is formed on the surface of the sunlight hollow plate body through the coextrusion with the thickness of 30-50 micron. The method for preparing the sunlight hollow plate is characterized by high temperature melt extruding the PC main materials and the ultraviolet absorber in the extruder, converging in the mould, shaping through the calibration table, annealing. The sunlight hollow plate by the method of the invention not only solves the delamination desquamation problems, but also makes full use of the ultraviolet absorber, which reduces the production cost.

Description

technical field [0001] The invention relates to a solar panel (polycarbonate panel), in particular to a solar hollow panel; the invention also relates to a manufacturing method thereof. Background technique [0002] The scientific name of the sun board is polycarbonate board. Plastic sheets have the problem of rapid aging caused by ultraviolet rays. Various manufacturers use different methods to solve this problem in order to prolong the service life of the products. The most practical and effective method is to add ultraviolet absorbers to the products. However, the difference in the addition process will cause a world of difference in the actual use effect. [0003] At first, everyone used the surface coating method, that is, to coat a layer of UV absorber on the surface of the board. However, due to the poor compatibility between PC and other materials, the rainwater after installation can easily wash off the surface coating. In addition, considering the possible damage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/00B29C47/06B29C47/56B29C47/92B29C47/88B29C71/02B29K69/00B29C48/92
CPCY02E10/40F24J2/243F24J2/242Y02E10/44F24S10/72F24S10/73B29C48/92B29C2948/92704B29C2948/92895
Inventor 李敏骅顾民朱伟峰
Owner SHANGHAI HUILI TUVGAL SHEETAB
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