Acrylic Diffuser For Construction

The main function of the diffuser is to diffuse the light, transforming it from a concentrated and intense state to a uniform and soft state. This characteristic makes it widely used in various fields. The following lists its functions in detail:

1. Light homogenization:
Eliminate glare and light spots: When a point light source or a line light source is directly irradiated, it will produce dazzling glare and obvious light and dark contrast, affecting visual comfort. The diffuser breaks up the light through its surface microstructure or internal particles to form a uniform surface light source, effectively eliminating glare and light spots, and creating a soft and comfortable lighting environment.
Improve the uniformity of light: In the fields of backlight display, lighting fixtures, etc., the diffuser can ensure that the light is evenly distributed on the entire luminous surface, avoiding the phenomenon of local overbrightness or overdarkness, and improving the display effect and lighting quality.

2. Protect the light source:
Physical protection: The diffuser can be used as a protective layer for the light source to prevent dust, water vapor, foreign matter, etc. from directly contacting the light source, thereby extending the service life of the light source.
Ultraviolet filtration: Some diffusers made of special materials can filter out ultraviolet rays and reduce the damage of ultraviolet rays to the light source and the surrounding environment.

3. Improve aesthetics:
Hide the light source: The diffuser can cover the light source and circuit structure behind it, making the product look more concise and beautiful.
Decorative effect: Through different materials, colors, textures and pattern designs, the diffuser can present rich visual effects and enhance the decorativeness and artistic sense of the product.

4. Other functions:
Improve the utilization rate of light energy: Some specially designed diffusers can direct light in a specific direction to improve the utilization rate of light energy, such as the focusing diffuser used in solar panels.
Anti-static and anti-fog: Some specially treated diffusers have anti-static and anti-fog functions, which are suitable for environments with high cleanliness requirements.

1. Constituent materials:

Base material:
PMMA (polymethyl methacrylate):Also known as acrylic or plexiglass, it is the most commonly used material for making diffusion plates, with the advantages of high light transmittance, good weather resistance, and easy processing.
PC (polycarbonate):** It has higher impact strength and heat resistance, but the light transmittance is slightly lower than PMMA, and the cost is also higher.
PS (polystyrene):** It has low cost, but poor light transmittance and weather resistance, and is generally used in occasions where performance requirements are not high.
Diffuser:
Inorganic particles: such as barium sulfate, titanium dioxide, etc., control the degree of light diffusion by adjusting the particle size and addition amount.
Organic particles: such as acrylic resin, silicone resin, etc., have good dispersibility and compatibility, but the cost is high.
Other additives:
UV resistant agent: improves weather resistance and prevents yellowing and aging of the board.
Flame retardant: improves fire resistance.
Antistatic agent: prevents static electricity from adsorbing dust.

2. Production process:

1. Raw material preparation: Mix PMMA particles, diffusants and other additives in a certain proportion.
2. Extrusion molding: Feed the mixed raw materials into the extruder, heat and melt them, and extrude them through the mold to obtain the required thickness and width of the plate.
3. Calendering molding: The molten raw materials are pressed and molded through a calender to obtain a thinner plate.
4. Surface treatment: The surface of the plate is frosted, embossed, etc. as needed to achieve different light diffusion effects.
5. Cutting and processing: Cut the plate into the required size, and perform drilling, engraving, hot bending and other processing.
6. Inspection and packaging: The finished product is tested for transmittance, haze, color difference and other performances, and packaged after passing.

3. Other types of diffusion plates:

PS diffusion plate: The production process is similar to that of acrylic diffusion plate, but the raw materials and processing temperature are different.
PC diffusion plate: Generally, injection molding is used to produce more complex shapes.
Glass diffuser: Use screen printing or sandblasting to create a diffusion pattern on the glass surface.

4. Factors affecting the performance of diffuser:

Choice of substrate: The transmittance, weather resistance, mechanical properties, etc. of different substrates vary greatly.
Type and amount of diffuser: directly affect the light diffusion effect and transmittance.
Thickness of the plate: The thicker the thickness, the better the light diffusion effect, but the transmittance will decrease.
Surface treatment process: Different surface treatment processes can obtain different light diffusion effects and appearance textures.