From the raw material analysis, how to make a transparent injection molding product?

To measure the transparency of some plastics, there are many standards, such as light transmittance, fog, refractive index birefringence and dispersion. See whether the softness and strength of the material are required. Transparent injection molding products generally use PS, SNA(AS) materials, PMMA and other materials, but they all have a brittleness problem that needs attention.

PS belongs to the general plastic, the price will not be higher than the price of PP(transparent). If the transparency of PP(crystalline material) continues to be improved, its crystallization needs to be inhibited during the material preparation process, so the cost will be higher.

According to the light transmittance of the material, it can be divided into:

Transparent material: the transmittance of visible light with wavelength 400nm-800 nm is more than 80%;

Translucent materials: the transmittance of 400 nm-800 nm visible light is between 50% and 80%;

Opaque materials: The refractive index of 400 nm-800 nm visible light is below 50%.

According to the above classification, the resin can be divided into transparent resins: mainly including PMMA, PC, PS, PET, PES, J.D series, CR-39, SAN(also known AS AS), TPX, HEMA, BS(also known as K resin);

Translucent resin: PP, PA; Opaque resin: ABS, POM, PTFE, PF, etc.

The principle of improving plastic transparency: reduce crystallinity, control clean quality, improve refractive index, reduce birefringence.

Improvement method:

To improve the transparency of plastics, nucleating agents can be added, which is the most effective way to increase the light transmittance of transparent resins, which can promote the crystallization of small molecular substances. It acts as a nucleus in the resin.

Blending improves the transparency of plastics by adding other resins to the transparent resin to improve transparency.

To measure the transparency of some plastics, there are many standards, such as light transmittance, fog, refractive index birefringence and dispersion. See whether the softness and strength of the material are required. Transparent injection molding products generally use PS, SNA(AS) materials, PMMA and other materials, but they all have a brittleness problem that needs attention.

PS belongs to the general plastic, the price will not be higher than the price of PP(transparent). If the transparency of PP(crystalline material) continues to be improved, its crystallization needs to be inhibited during the material preparation process, so the cost will be higher.

According to the light transmittance of the material, it can be divided into:

Transparent material: the transmittance of visible light with wavelength 400nm-800 nm is more than 80%;

Translucent materials: the transmittance of 400 nm-800 nm visible light is between 50% and 80%;

Opaque materials: The refractive index of 400 nm-800 nm visible light is below 50%.

According to the above classification, the resin can be divided into transparent resins: mainly including PMMA, PC, PS, PET, PES, J.D series, CR-39, SAN(also known AS AS), TPX, HEMA, BS(also known as K resin);

Translucent resin: PP, PA; Opaque resin: ABS, POM, PTFE, PF, etc.

The principle of improving plastic transparency: reduce crystallinity, control clean quality, improve refractive index, reduce birefringence.

Improvement method:

To improve the transparency of plastics, nucleating agents can be added, which is the most effective way to increase the light transmittance of transparent resins, which can promote the crystallization of small molecular substances. It acts as a nucleus in the resin.

Blending improves the transparency of plastics by adding other resins to the transparent resin to improve transparency.