Dushanzi GPPS-500: High-Quality Polystyrene for Diverse Applications Applications

Product Overview

Dushanzi Petrochemical GPPS-500 is manufactured by Dushanzi Petrochemical, a renowned name in the petrochemical industry. This product is made from high-grade polystyrene material, using advanced polymerization technology. It features excellent dimensional stability and consistent melt flow performance during mass production. With reliable chemical resistance against daily weak chemicals, it can withstand various common mild chemical environments. It also meets strict food-contact and safety standards, ensuring the safety of both production and usage. In terms of cost and supply, it offers a cost-effective solution as it is produced in large quantities, maintaining a stable supply chain.

Basic Product Specifications

• Density: 1.04 - 1.05 g/cm³ (ISO 1183)

  Melt Flow Rate: 3.5 - 6.5 g/10 min (200℃/5kg, ASTM D1238 / ISO 1133)

  Tensile Strength: 44 - 47 MPa (ISO 527)

  Flexural Strength: 80 - 100 MPa (ISO 178)

  Impact Strength: 1.5 - 3.0 kJ/m² (ISO 179, Notched)

  Heat Deflection Temperature: 87 - 92°C (ISO 75, 1.8MPa)

Core Product Advantages

High Rigidity & Excellent Dimensional Stability

Dushanzi Petrochemical GPPS-500 features ultra-high rigidity and low molding shrinkage. It maintains precise and stable shape after injection and extrusion processing, avoiding warpage or deformation. In practical applications, this is highly beneficial for rigid transparent products that require strict dimensional accuracy, such as precision daily necessities and transparent packaging parts. It delivers consistent finished product tolerance and stable batch performance for long-term mass production.

Excellent Chemical Resistance

It has strong resistance to a wide range of mild chemicals, including weak acids, weak alkalis, salt solutions and daily organic solvents. This property makes it suitable for daily cosmetic packaging, food containers and household storage products. It effectively resists daily chemical erosion, ensuring the surface clarity and structural integrity of transparent products, reducing aging and fogging risks in daily use scenarios.

Low Water Absorption

The low water absorption rate of the GPPS-500 ensures its dimensional stability in humid environments. This is crucial for products used in indoor and high-humidity areas, such as indoor decorative panels and transparent electronic enclosures. It can prevent swelling and deformation, maintaining the performance and appearance of the products over time.

Good Processability

It can be easily processed using various methods such as injection molding, extrusion, and thermoforming. This allows manufacturers to produce complex-shaped transparent products with high precision. The smooth processing also leads to high-quality glossy finished products, reducing production waste and improving efficiency.

Main Application Fields

Food Packaging

• It is used to make food containers, such as trays, transparent lids and disposable boxes, due to its food-grade safety and good surface clarity, which keeps packaged products clean and visually appealing.

Daily Consumer Goods

• Manufacture transparent stationery, cosmetic shells, storage boxes and lighting covers, relying on its high rigidity, high gloss and stable dimensional performance.
• Used in the production of industrial containers and pipes thanks to its chemical resistance.

Building & Decoration Materials

• Applied in indoor decorative panels and transparent insulation parts, taking advantage of its low water absorption and stable indoor environmental adaptability.

Electronic Transparent Parts

• Used for small appliance transparent covers and indicator light housings, featuring stable insulation performance and precise molding effect.

• Processing & Storage Guidelines

• Processing

  Temperature: The recommended processing temperature is between 180 - 220°C for injection molding.

  Ratio: The material should be used as it is without the need for complex mixing ratios.

  Drying requirements: It is recommended to dry the material at 70 - 80°C for 2 - 4 hours before processing to remove moisture and avoid silver streaks.

  Storage Requirements

  Temperature: Store in a cool and dry place at a temperature between 10 - 30°C.

  Humidity: Keep the relative humidity below 60%.

  Stacking limits: Do not stack too high to avoid deformation, with a maximum stacking height of 2 meters.

  Shelf life: The product has a shelf life of 12 months under proper storage conditions.

Frequently Asked Questions 

Q1: Can the GPPS-500 be used in contact with food?

A: Yes, Dushanzi GPPS-500 meets food-contact safety standards. It can be used to make food-grade packaging products, ensuring the safety of food storage and consumption (not applicable for high-temperature heating).

Q2: What is the difference between GPPS-500 and other similar products?

A: Compared to other common GPPS grades, GPPS-500 features more balanced melt fluidity, higher rigidity and better dimensional stability. It produces higher-gloss transparent finished products with fewer defects, making it more suitable for high-precision transparent consumer goods packaging.

Q3: How should I process the GPPS-500 for the best results?

A: Pre-dry the material at 70 - 80°C for 2 - 4 hours. Then, process it at a temperature between 180 - 220°C for injection molding. Follow these steps to ensure high-quality finished products.

Q4: What is the storage condition for the GPPS-500?

A: Store it in a cool and dry place at 10 - 30°C with a relative humidity below 60%. Do not stack it too high, with a maximum height of 2 meters.

Q5: Is the GPPS-500 environmentally friendly?

A: Yes, the product complies with mainstream environmental standards. Virgin GPPS-500 resin can be recycled and reprocessed under standardized procedures, reducing environmental impact.

Product Summary

Dushanzi Petrochemical GPPS-500 is a cost-effective and high-quality general-purpose polystyrene resin that offers excellent rigidity, high surface gloss, low water absorption and stable processability. Its reliable performance makes it a top choice for industries such as food packaging, daily consumer goods, decoration and electronic transparent parts. If you are interested in this product, please contact us for samples and quotes.