Introduction of GPPS:
General Purpose Polystyrene is a kind of thermoplastic resin, is a colorless, odorless, tasteless, shiny, transparent beaded or granular solid. Density is 1.04 to 1.09, transparency is 88% to 92%, refractive index is 1.59 to 1.60. In the stress function, resulting in birefringence, the so-called stress - optical effect. Product of the melting temperature is 150 to 180 ° C, thermal decomposition temperature is 300 ° C, the heat distortion temperature is 70 to 100 ° C, long-term use temperature is 60 ~ 80 °C.
Specifications of GPPS:
1.Good transparency
2.Low residual monomer
3.Mold dimension stability
4.Good heat resistance
5.Easy Processing
Item |
Test conditions |
Test method |
Test data |
unit |
Density |
|
ISO 1183:1987 |
1040 |
kg/m3 |
Water absorption |
|
ISO 62:1999 |
<0.1 |
% |
Melt flow rate |
200°C/5kg |
ISO 1133 |
7.3 |
g/10min |
Process shrinkage |
|
ISO 294 |
0.4-0.7 |
% |
Charpy impact strength |
1eU |
ISO 179:1993 |
15 |
kj/m2 |
Tensile modulus |
1mm/min |
ISO 527 |
3300 |
MPa |
Elongation |
50mm/min |
ISO 527 |
3 |
% |
Tensile strength at break |
50mm/min |
ISO 527 |
55 |
MPa |
Ball indentation hardness H |
358N/30s |
ISO 2039 |
150 |
N/mm2 |
Bending strength |
2mm/min |
ISO 178 |
100 |
MPa |
HDT |
1.82MPa |
ISO 75-2 |
80 |
°C |
Linear coefficient of thermal expansion |
(23-80)°C |
DIN 53 752 |
0.8-1.0 |
K-1 |
Heat conduction |
|
DIN 52 612 |
0.16 |
W/mK |
Vicat softening point |
B10/oil |
ISO 306 |
93 |
°C |
Flame retardance |
>1.4mm |
UL-Standard 94 |
94HB |
Class
|
Physical properties of GPPS:
GPPS is colourless, odourless, tasteless and shiny, transparent particles. Qualitative light, cheap, low water absorption, good color, good dimensional stability, electrical products, transparent, easy processing.
Applications of GPPS:
1.GPPS can be used for daily necessities, electrical, instrument shell, toys, lamps, household appliances, stationery, cosmetics containers, indoor.
2.Also can be used in outdoor decoration, fruit tray, optical components, such as prism, lens) lens window glass and molding, headlights, telecom accessories, electric frequency capacitor films.
Handling and Storage of GPPS:
[Handling]
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
[Storage]
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
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Since 1999 we entered into EPS business line, we have involved in this industry for more than 12 years. Our company mainly focus on EPS scientific research and development, technical support, and EPS consult information.
In China, we are familiar with domestic developing trends of EPS industry. Here we emphasize on the promotion of EPS raw materials and advanced equipments from abroad, and we help our customers to solve some technical problems during processing, even produce some colored materials for them according to their clients' Demands. We are concerned about EPS raw material prices trends at any time, thus we help our customers save raw material purchasing costs and procurement costs. With many years' Cooperation experience with major shipping companies like MAESK, MSC, COSCO, etc., we ensure our cargoes booking and sailing timely. Through all these efforts so that we can enhance our customers' Competitiveness.
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We also devoted a lot in recycling EPS waste. We gather waste EPS in China, and promise to our customers to recycle waste EPS around the world. We processed these waste EPS into a variety of beautiful and useful products. In this point, we pride for reducing the white pollution, and saving energy for the community.
In China, only a company like us, can engage in areas range from raw materials, equipments and recycling granulations with technical supports, and play endless important role in the whole industrial chain.
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