CN-122003626-A - Reflecting mirror and preparation method thereof

Abstract

The embodiment of the disclosure provides a reflector and a preparation method thereof, and relates to the technical field of optics. The prepared reflector is used for automobile lamps, can meet the temperature-resistant condition, ensures that the surface profile meets the requirement of an optical surface, and can be plated with a metal reflecting layer and meets the requirement of reflectivity without primer treatment in advance in the process preparation process.

Inventors

• WANG HONGYANG
• SHEN JIN
• Ning Xiaokun
• WANG RENJIE
• YAO HUIDI
• YIN QUNJIE
• LU JIANQING
• CHEN YANHENG
• LI ZHIBING

Assignees

• 华域视觉科技(上海)有限公司

Dates

Publication Date

20260508

Application Date

20240905

Claims (10)

1. The reflector is characterized by comprising a basal layer and a metal reflecting layer plated on one side of the basal layer, wherein the preparation material of the basal layer comprises a polyphenylene sulfide base material, 15-25% of glass fiber, 15-25% of mineral powder and 1-3% of glycidyl ester-maleic anhydride-ethylene copolymer.
2. The mirror of claim 1, wherein the metallic reflective layer comprises an aluminum layer or a silver layer.
3. The mirror according to claim 1, wherein the glass fibers have a diameter between 4-8 μm.
4. A reflector according to claim 1 or 3, characterized in that the particle size of the mineral powder is between 4 and 8 μm.
5. The mirror of claim 4, wherein the base layer is integrally formed using an injection molding process.
6. A method of manufacturing a mirror, the method comprising: Providing a polyphenylene sulfide base material, adding glass fiber, mineral powder and glycidyl ester-maleic anhydride-ethylene copolymer into the polyphenylene sulfide base material respectively, and extruding to form a modified polyphenylene sulfide material; pre-drying the modified polyphenylene sulfide material; Injecting the modified polyphenylene sulfide material subjected to pre-drying treatment at a mold temperature of more than 140 ℃ to form a substrate layer; And plating a metal reflecting layer on one side surface of the substrate layer, wherein the metal reflecting layer comprises an aluminum layer or a silver layer.
7. The method of claim 6, wherein providing a polyphenylene sulfide substrate, adding glass fiber, mineral powder, and a glycidyl ester-maleic anhydride-ethylene copolymer to the polyphenylene sulfide substrate, respectively, and extruding to form a modified polyphenylene sulfide material comprises: 15-25% of added glass fiber, 15-25% of added mineral powder and 1-3% of added glycidyl ester-maleic anhydride-ethylene copolymer.
8. The method of claim 6, wherein said injection molding said modified polyphenylene sulfide material after said pre-drying treatment at a mold temperature of greater than 140 ℃ to form a base layer comprises: The temperature of the charging barrel is 290-320 ℃, the injection speed is 32-64mm/s, the holding pressure is 40-70MPa, the holding time is 2s, the cooling time is 55s, the screw rotating speed is 80-150rpm, and the back pressure is 0.2-1 MPa.
9. The method of claim 6, wherein the pre-drying the modified polyphenylene sulfide material comprises: And (3) drying the modified polyphenylene sulfide material for 3 hours at 140 ℃.
10. The method of claim 6, wherein prior to providing the polyphenylene sulfide substrate, the method further comprises: and mixing xylene with sodium sulfide to synthesize the polyphenylene sulfide substrate.

Description

Reflecting mirror and preparation method thereof Technical Field The disclosure relates to the technical field of optics, in particular to a reflector and a preparation method thereof. Background In the car light module, the reflector is an extremely important part, and the light beam emitted by the LED light source is reflected by the reflector and modulated and finally converged on the focus of the lens. The heat radiation capability of the lamp module is an important index for influencing the working stability of the lamp module, if the heat radiation cannot be effectively carried out, the local temperature of the optical element is too high, the service life of the optical element is adversely affected, and the stability of the working performance of the whole lamp module is also influenced. As the requirements for the light source power of the lamp module in the market are continuously increasing, the reflective element in the lamp module needs to meet higher heat-resistant requirements. Among the commonly used materials of reflectors in the car lamp modules in the prior art, polycarbonate (PC) and high temperature resistant Polycarbonate (PCHT) are difficult to meet the current temperature resistant requirements, and the preparation process is simple but cannot be widely applied. Polyetherimide (PEI) has a high temperature resistance rating and can be directly aluminized without primer treatment, but PEI has high cost and is not suitable for mass production and product cost management. Polyphenylene Sulfide (PPS), bulk Molding Compound (BMC) and aluminum alloy (ADC 12) also have higher temperature resistance level, but the surface profile of the materials does not meet the requirements for preparing the optical surface of the reflecting mirror, and the reflectivity can meet the requirements of optical design only by aluminizing after primer treatment in the process of technical preparation. Problems of primer build-up may occur when such materials are primed, affecting the optical surface flatness of the prepared mirrors, resulting in a significant increase in the reject ratio of the prepared mirrors. In addition, the primer typically contains organic solvents, and Volatile Organic Compounds (VOCs) released during spraying and drying of the primer can negatively impact the environment, and primer treatment also increases the complexity of the production process, increases the production costs, and also increases the cost of waste disposal. Disclosure of Invention The purpose of the present disclosure is to provide a reflector and a preparation method thereof, wherein the prepared reflector is used for an automobile lamp, the reflector can meet the temperature-resistant condition, the surface profile is ensured to meet the requirement of an optical surface, and simultaneously, a metal reflecting layer can be plated and the requirement of reflectivity can be met without primer treatment in advance in the process preparation process. Embodiments of the present disclosure are implemented as follows: In one aspect of the embodiments of the present disclosure, a reflector is provided, the reflector includes a base layer and a metal reflecting layer plated on one side of the base layer, the base layer is made of a polyphenylene sulfide base material, and 15% -25% by mass of glass fiber, 15% -25% by mass of mineral powder, and 1% -3% by mass of glycidyl ester-maleic anhydride-ethylene copolymer. Optionally, the metal reflective layer comprises an aluminum layer or a silver layer. Alternatively, the glass fibers have a diameter between 4 and 8 μm. Optionally, the particle size of the mineral powder is between 4 and 8 mu m. Optionally, the substrate layer is integrally formed by injection molding. On the other hand, the embodiment of the disclosure provides a preparation method of a reflecting mirror, which comprises the steps of providing a polyphenylene sulfide base material, respectively adding glass fibers, mineral powder and glycidyl ester-maleic anhydride-ethylene copolymer into the polyphenylene sulfide base material, extruding to form a modified polyphenylene sulfide material, pre-drying the modified polyphenylene sulfide material, injecting the pre-dried modified polyphenylene sulfide material at a mold temperature of more than 140 ℃ to form a base layer, and plating a metal reflecting layer on one side surface of the base layer, wherein the metal reflecting layer comprises an aluminum layer or a silver layer. Optionally, providing a polyphenylene sulfide substrate, and respectively adding glass fiber, mineral powder and glycidyl ester-maleic anhydride-ethylene copolymer into the polyphenylene sulfide substrate, wherein the extrusion to form the modified polyphenylene sulfide material comprises 15-25% of the added glass fiber, 15-25% of the added mineral powder and 1-3% of the added glycidyl ester-maleic anhydride-ethylene copolymer. Optionally, injection molding the pre-dried modified polyphenylene su