Manufacturing method of microprism reflective material

A technology of reflective materials and production methods, applied in optics, optical components, instruments, etc., can solve the problems of large processing tolerance, poor preservation effect, and difficult production, and achieve good cutting and processing performance, which is conducive to preservation and enlargement Effects of retroreflectivity and wide-angle

Active Publication Date: 2018-01-19
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in view of the existing problems such as the difficulty in making the intermediate working mold of the microprism reflective material, the poor preservation effect, and the large tolerance of the processing technology, it is necessary to develop an intermediate mold made of organic polymer material as the working mold. Mold, propose a general processing method for making micro-prism reflective materials using the process of original mold making, intermediate mold copying, mold modification, reflective material copying, shape modification, etc., which can realize PMMA, PC, photosensitive polymer and other high refraction High-efficiency, high-transmittance material micro-prism reflective material batch precision production provides a new solution for the production of V-groove, quadrangular pyramid, triangular pyramid, and microcrystalline cube structure reflective materials

Method used

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  • Manufacturing method of microprism reflective material
  • Manufacturing method of microprism reflective material
  • Manufacturing method of microprism reflective material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: The original mold of the microprism reflective material is made, and the implementation steps are:

[0019] (1) Use the Y-axis cutting function of the diamond lathe, or the flying knife cutting function to process PMMA, nickel, copper or aluminum micro-prism arrays. The depth of the micro-prism array is 51um, the variable length is 120um, and the Y-axis movement speed is 200mm / min~1000mm / min, Z-axis rough turning feed rate is 5-40um each time, finish turning feed rate is 1-10um each time, the tool is selected with a 70.2-degree included angle tool, and the workpiece is rotated 120 degrees twice around the center of rotational symmetry for turning. Make it intersect to form a triangular pyramid.

[0020] (2) The cutting tool adopts an included angle of 90 degrees, and other process parameters refer to (1), and only cuts once along the Y direction to realize the original mold production of V-groove reflective materials.

[0021] (3) The included angle of t...

Embodiment 2

[0023] Embodiment 2: The intermediate working mold of organic high molecular polymer material is made, and the implementation steps are:

[0024] (1) Evaporate a layer of release agent on the surface of the original mold.

[0025] (2) Coating a layer of material solution such as PDMS or PC or PMMA on the surface of the original mold.

[0026] (3) Heating and curing at 60°C to 150°C for 10 to 100 minutes to achieve sufficient curing of the organic polymer material.

[0027] (4) Using a mechanical stripping method to separate the organic polymer structure pattern from the demoulding of the original mold.

[0028] (5) The separated organic polymer intermediate mold can be used to directly copy the subsequent microprism reflective film, or the intermediate mold can be cut and spliced ​​into a large-area mold according to a certain method for the next step of microprism reflective film replication make.

Embodiment 3

[0029] Embodiment three: Microprism reflective film duplication is made, and implementation steps are:

[0030] (1) Evaporate a layer of fluorine-containing release agent on the surface of the intermediate working mold.

[0031] (2) Apply a layer of photosensitive adhesive on the surface of the intermediate working mold, and cure it under the irradiation of a mercury lamp or an ultraviolet LED lamp. The curing time depends on the thickness of the photosensitive adhesive coating, and the irradiation is sufficient for photosensitive measurement.

[0032] (3) Working in the middle, the surface of the mold is coated with a layer of heat-curing high molecular polymer, and heated with nickel in the temperature range of 60-120 degrees for 10-100 minutes in an oven or infrared heating.

[0033] (4) The release and separation of the microprism reflective material film from the mold is realized by mechanical stripping.

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Abstract

Provided is a microprism reflecting material manufacturing method, comprising employing the diamond lathe ultra-precision cutting process to manufacture a microprism structure reflecting material original graphic mould on materials such as plastic, metal, colloid, crystal, etc.; manufacturing modules of PDMS, PC, PMMA, photosensitive gel, etc. out of an original mould with a microprism pattern through thermocuring, ultraviolet curing, and duplication processes; plating a duplicated intermediate mould with a layer of fluorine containing macromolecules, and improving nickel mould surface demoulding; coating the modified intermediate mould with material solutions of PMMA, PC, photosensitive gel, etc. to perform curing processing, and then performing separated demoulding between the module and a target reflective membrane; and finally decorating the demoulded microprism reflecting material membrane into a designed shape. The method effectively solves the problems of great manufacturing difficulty, poor preserving effect, large processing technology tolerance, etc. of a present microprism reflecting material intermediate work mould.

Description

technical field [0001] The invention belongs to the technical field of making reflective materials, in particular to a method for making microprism reflective materials. Background technique [0002] The micro-prism reflective material does not require built-in energy, and can achieve traceable reflection when external light is incident. The structures of existing microprism reflective materials on the market mainly include V-shaped grooves, quadrangular pyramids, triangular pyramids, and microcrystalline cubes. , infrared touch screen and other industries. It plays a huge role in energy saving, environmental protection, traffic safety, photoelectric equipment and other fields. At present, there are a few companies in the United States and Japan that can develop and produce micro-prism reflective materials in the world, such as 3M and Avery, and a few large-scale listed companies such as Dao Ming Optical and Crystal Optoelectronics are developing micro-prism reflective mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/126
CPCG02B5/126
Inventor 张为国张东夏良平朱国栋杜春雷
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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