跳至主要内容

What is the difference between PMMA Diffuser Sheet and PC Diffuser Sheet?

At present, there are many types of diffusion plates on the market. This special plate uses a scientific production process. During production, the diffusing agent is uniformly distributed inside the plate through the process, so that a certain optical effect can be achieved. The principle of optical action of this board.
PMMA Acrylic Sheet
PMMA Acrylic Sheet
After the light is irradiated to the diffusion plate, the light diffusing agent inside it will play a role, causing some light to be refracted, reflected, and scattered. This will ensure the purity of the transmitted light and block the light source. The specific optical action principle is this: When light is emitted, it will encounter the medium. As long as the medium the light encounters is different from the previous one, different media will have different refractive indices, so light will be affected by the refractive index. When reflection or refraction occurs, it will also penetrate or be absorbed by the shielding medium because of the shielding medium, and the part of the light that has passed through will be diffused by the board. For this shielding medium, the larger its refractive index, the stronger the dispersion that occurs, and the smaller the amount of light that passes through the diffuser. The more it interferes with light, the more light it passes will be limited. A medium with a rough surface also has a great resistance to light. The refractive index of the shielding medium and the position from the light source also affect the light diffusion angle. For large angles, the amount of transmitted light is very small, and it is not suitable for lighting.
The properties of both are transparent plastics, with the same thickness and the same raw material particles. The acrylic sheet has a 2-3% higher transparency than the PC diffuser sheet, and the two are close to 90%. It is still relatively large, after all, there are 2 materials.
As a PMMA Diffuser Sheet Supplier, share with you.
Heat-resistant, temperature-resistant, and weather-resistant
PMMA Acrylic Sheet is easy to soften when it reaches 70 degrees, PC board is 120 degrees, PC board is more heat-resistant, suitable for a wider range of working applications.
2. Impact resistance, smash resistance, strength index
The thickness of the two is the same. The impact strength of PC diffuser sheet is 30-50 times more than that of PC sheet. Starting from 6 mm, PC thick sheet is a ballistic material. 3 mm PC diffuser sheet is not broken by a hammer.
3. Fire resistance and fire resistance
PC diffuser sheet is a class B flame retardant material, one of self-extinguishing plastics, which is not easy to burn, and acrylic sheet is not flame retardant.
4. Environmental protection
PC Diffuser Sheet belongs to environmentally friendly plastic. Some properties of acrylic sheet cannot be reached, so it is being eliminated by the society. Although China is a big country of acrylic sheet, there are very few acrylic sheets with high added value and they are too dependent on imports.
5. Small knowledge reminders
Acrylic sheet will be slightly deformed immediately under the environment of 60-95 degrees for a long time; acrylic sheet above 96 degrees can be made into a thermoforming process, which is the hot bending process commonly used in products. If you use acrylic sheet, it is recommended to use the ambient temperature Do not exceed 40 degrees.
PC board has superior temperature resistance performance, and it will not deform under minus 40 ℃ to high temperature 135 ℃.

评论

发表评论

此博客中的热门博文

Plastic Artist-Acrylic Processing Technology

Acrylic can be used casting, injection molding, extrusion, thermoforming, laser engraving, laser cutting and other processes. Casting molding Casting molding for forming plexiglass sheet, bar and other profiles, that is, body-bulk polymerization method of forming profiles. After casting molded products need to be post-processed, post-processing conditions are incubated at 60 ℃ 2 hours, 120 ℃ for 2 hours. Injection molding Injection molding using suspension polymerization obtained pellets, molding in the ordinary plunger or screw injection molding machine. Process parameters include screw injection molding machine, plunger injection molding machine, barrel temperature, injection molding products also need to eliminate the internal stress treatment, processing in the hot air circulation oven at 70 ~ 80 ℃, processing time as the thickness of acrylic products, the general All about 4 hours. Thermoforming Thermoforming is the process of making plexiglass sheets or she...
发表评论
阅读全文

How much do you know about PMMA Diffuser Sheet?

Background, technical characteristics, principle and application of PMMA diffuser. High Quality PMMA Diffuser Sheet , a material with light diffusing properties, is one of the types of diffuser plates of PS (polystyrene), PC (polycarbonate), PP (polypropylene), etc. The optical characteristics of plastic sheets such as haze, high light transmittance and high diffusivity can effectively convert point or line light sources into soft and uniform surface light sources. Under the premise of achieving good light transmittance, they also have good The light source lattice shielding property is an ideal optical material for solving the secondary light distribution of LED lamp products, and is the best light diffusion material for LED lighting products. PMMA Diffuser Sheet First, the PMMA diffuser produces a background In the process of LED lighting fixtures being gradually accepted by the market, the problem of LED lamp masks has been plagued by lamp manufacturers, which must have h...
发表评论
阅读全文

Development Background of LED Diffuser Sheet

Led diffuser plate  is an important part from the past to now. Glass was used as the lampshade initially, but the glass was not brittle and the diffusion effect of light was not very good. It was difficult to meet the lighting requirements. Later, it gradually developed to replace glass with resin, but if only transparent resin lampshade, although the light transmittance is high, the basic can reach more than 90%, but the light diffusion effect is not ideal, poor light concealment. The white resin, whose light transmittance is too low, seriously affects the illumination of the LED lamp. In this case, techniques such as adding milky white pigments and surface scrubbing aids are used. Although this solves the issue of light source shielding, there is an excessively low light transmittance, which seriously affects the efficacy of LED lighting. Therefore, the problem of diffusion masks has been plagued by problems. In such a contradictory problem of light rate and light source shieldin...
发表评论
阅读全文