Customization: | Available |
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Feature: | Photodegradable |
CAS No.: | 9003-53-6 |
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High-impact polystyrene, also known as HIPS, is a thermoplastic material made of elastomer-modified polystyrene. The two-phase system composed of a rubber phase and a continuous polystyrene phase has developed into an important polymer product in the world. This general product has a wide range of impact properties and processing properties, making it widely used ,Such as used in automobiles, appliances, electric products, furniture, household appliances, telecommunications, electronics, computers,disposable products, medicine, packaging and entertainment markets.This type of PS is typically made by adding 5-10% rubber or butadiene copolymer. This increases the polymer's toughness and impact strength, resulting in a very stiff product that is ideal for packaging applications.
Parameter | Grade | ||||
Standard: GB5761-1993 | SG3 | SG5 | SG7 | SG8 | |
K - Value | 72 - 71 | 66 - 68 | 62 - 60 | 59 - 55 | |
Polymerizing Index | 1300 +/-50 | 1000 +/-50 | 800 +/-50 | 700 +/-50 | |
Number of impurity particles ( ≤) | 16 | 16 | 20 | 20 | |
Volatile content (incl. water) (% ≤) | 0.3 | 0.4 | 0.4 | 0.4 | |
Apparent density (≥) | 0.42 | 0.48 | 0.48 | 0.5 | |
Particle size |
≥ 0.25mm ≤ | 2 | 2 | 2 | 0.4 |
≥ 0.063mm ≥ | 95 | 95 | 95 | 95 | |
Number of Fish Eye (/400 cm2) (≤) | 20 | 20 | 30 | 30 | |
Plasticizer absorption of 100g resin ( ≥) | 26 | 19 | 12 | 22 | |
Whiteness (160°C, after 10 min.) (% ≥) | 78 | 78 | 75 | 75 | |
VCM Residue PPM ( ≤) | 5 | 5 | 5 | 5 |
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