4. Glass materials, glass with transparent plastic performance requirements: high transmittance; high surface hardness; high impact strength; easy secondary processing. Plastic glass can be divided into two types of communication glass and architectural glass. (1) traffic glass traffic glass, including aerospace glass, vehicle glass and ship glass, require its density. Commonly used materials for the PMMA and PC two, PMMA for the traditional glass materials, and PC in recent years, the new development of new glass materials, customary also known as the sun board.

(2) architectural glass to improve the fragility of inorganic glass shortcomings, has begun to study plexiglass, and made progress. Common materials for the PC, PMMA and PETG. 5. Solar energy materials, solar energy with transparent material performance requirements: high transmittance, low haze; good weather resistance; through the near infrared, solar nearly half of the near infrared, can effectively use solar energy; far infrared transmittance Higher, such as PE, FEP has a greater permeability. Compared with the glass, plastic can be all through the near infrared, and some plastic can also be through the larger far infrared; and glass infrared transmission is poor. Therefore, the plastic is more suitable than the glass ring: light and can be widely used in solar water heaters, greenhouse, solar room cover plate material. Can be used for solar transparent plastic PMMA, PC, GFUP, FEP, PVF and SI and so on. 6. Fiber optic materials transparent plastic material using repeated refraction and reflection, can achieve the twists and turns of light transmission. This feature is particularly suitable for fiber optic materials. The performance requirements of the material: transparency is good, the core layer requires high refractive index: the coating requires low refractive index, birefringence is small and not because of processing and increase, good light resistance. Made of plastic, C fiber material consists of two layers of transparent material: the core layer is a high refractive index of transparent plastic material PMMA or PC; cladding is a low refractive index transparent plastic, the material is fluorine-containing olefin polymer, Fluorinated methyl methacrylate. 7. CD-ROM material for the use of optical discs with good transparency of the optical plastic material, which should have the following properties: high transparency, the light transmittance of not less than 90%; good environmental adaptability, transparency is not due to temperature, humidity And produce a big change