Polystyrene (PS) ordinary polystyrene resin as non-toxic, odorless, colorless and transparent, products with high transparency, light transmission rate of up to 90% above, good electrical insulation properties, easy coloring, good rigidity and resistance to chemical corrosion. The shortcomings of the ordinary polystyrene is brittle, low impact strength, easy to stress cracking, poor heat resistance and not resistant to boiling water, etc..

Polystyrene colorless, transparent, can free color, relative density is second only to the PP, PE, with excellent electrical properties, especially high frequency characteristics and inferior to the F-4, PPO. In addition, the light stability is second only to the methyl acrylic acid resin, but the ability to resist radiation is the strongest of all plastics. Polystyrene is the most important feature of the melt when the thermal stability and mobility is very good, so easy molding processing, especially the injection molding is easy, suitable for mass production. Molding shrinkage rate is small, the size of the product is stable.

Mechanical properties of PS, with the increase of temperature, rigidity (elastic modulus, tensile strength, impact strength and so on, and elongation at break. The transparency of PS is good, the transmittance is 88 ~ 92%, second only to acrylic acid polymer, the refractive index is 1.59 ~ 1.60. Therefore, it can be used as optical parts, but it is subject to the role of sunlight, yellow and turbid. PS has the main drawback is that the brittleness and low heat resistance.

Polystyrene (PS) plate with obturator compact. Polystyrene molecular structure itself does not absorb water, the positive and negative plates are no cracks, so the water absorption rate is extremely low, moisture and anti penetration performance is excellent. Corrosion protection, durability: the general rigid foam insulation materials used in a few years after the aging, resulting in decreased performance of water absorption. And extruded plate because of its excellent anti-corrosion, anti-aging, insulation, under the high pressure of the water vapour can still keep its excellent performance.