# Conductive PS Compound | RenJie Plastics > Source: https://www.rjplastics.com/en/product/conductive-ps-compound ## Conductive Compound [Home](/en/)›[Products](/en/products)›[ESD Plastics](/en/products/esd-lastics)›[Conductive Compound](/en/products/conductive)›**Conductive PS Compound** **## Conductive PS Compound Model: CT-08A/CT-08B** Conductive PS (polystyrene) compound combines antistatic and electromagnetic interference (EMI) shielding functions. The PS base has a density of just 0.89–0.91 and is a non-toxic | Product Description | Conductive PS Compound | | --- | --- | | RenJie®Grade | CT-08A/CT-08B | | Surface Resistivity | 10^2~10^5 Ohm/sq | | Volume Resistivity | 10^2~10^4 Ohm.cm | | Appearance | Granules/Black | | Conductive filler | Carbon black /Carbon nanotube etc | [Get a quote**](#inquiry) Add to inquiry list tjh@rjplastics.com+86 13712390573 Overview Specifications ### 1. Properties of Conductive PS Compound Conductive PS (polystyrene) is a conductive compound with **antistatic** and **electromagnetic interference (EMI) shielding** functions. #### 1.1 Base PS Resin Characteristics Polystyrene is a **milky white** polymer that is **non-toxic, odorless** and very stable in water, and it is classified as an **environmentally friendly material**. Its **density is 0.89–0.91**, making it one of the lightest plastic varieties. PS has good mechanical properties: **apart from impact resistance, its other mechanical properties are better than those of polyethylene**. #### 1.2 Conductive Performance Conductive PS compounds have excellent conductivity. According to different application requirements, materials with different conductive properties can be obtained by **adjusting the type and amount of conductive filler**. Both **surface resistivity and volume resistivity** can meet a variety of occasions requiring conductive properties, with **surface resistivity ranging from 10⁴ to 10⁹ Ω/sq**. #### 1.3 Chemical Resistance Conductive PS compounds have good chemical resistance and resist most chemicals. They withstand the attack of certain **acids, alkalis, salts** and other chemicals while maintaining material performance stability. In the chemical and electronics industries they can be used in environments exposed to chemical substances and are **especially suitable for semiconductor packaging materials**. #### 1.4 Molding Processability Conductive PS compounds have good molding processability and can be made into terminal products of various shapes — such as **PS sheets, PS plates, PS pipes and injection molded parts** — through different processing methods including **injection molding, extrusion and blow molding**. ### 2. Disadvantages of Conductive PS Compound #### 2.1 Relatively Poor Thermal Stability The **glass transition temperature and melting point of conductive PS are relatively low**, so its thermal stability is poor, generally around **70 °C–100 °C**. When the temperature approaches or exceeds its glass transition temperature, performance changes significantly — for example, **reduced hardness and poor dimensional stability**. As the temperature continues to rise to the melting point, the material begins to melt. Conductive PS is therefore limited in **high-temperature environments or applications with high heat resistance requirements**. In some high-temperature electronic equipment and automotive engine peripheral parts, for example, conductive PS may not be applicable. #### 2.2 Relatively Large Thermal Expansion Coefficient The **thermal expansion coefficient of conductive PS is relatively large**, meaning the dimensions of the material change considerably with temperature. In applications with high dimensional accuracy requirements — such as **the packaging of precision electronic components and optical instruments** — the thermal expansion characteristics of conductive PS may affect product performance and reliability. ### 3. Applications of Conductive PS Compound #### 3.1 Emerging and Advanced Fields Conductive PS is not only gaining ground rapidly in **antistatic additives, computer anti-electromagnetic screens and intelligent windows**, it also has broad application prospects in **solar cells, mobile phones, micro TV screens** and even **life science research**. Moreover, conductive masterbatch will drive the rapid development of **molecular electronics** — in the future, computing speed can be greatly improved while computer size is reduced. #### 3.2 Electrical Engineering In electrical engineering, conductive PS is widely used in the **slot insulation and interphase insulation of small and medium-sized motors**, as well as **packaging insulation or gasket insulation for capacitors, transformers, wires and cables**. Because conductive PS is **thin with good electrical performance**, the insulation thickness can be reduced — which is important for **reducing the weight and volume of motors and electrical appliances**. Conductive PS is recommended for applications that require both conductivity and good impact performance. #### 3.3 Electromagnetic Shielding Conductive PS is used for the **electromagnetic shielding** of electronic products and equipment. As electronic equipment becomes increasingly widespread, electromagnetic radiation and interference problems grow more serious. Conductive PS can be made into **housings, shielding covers** and other parts to electromagnetically shield internal electronic components from external electromagnetic interference, while also **reducing the electromagnetic radiation the equipment emits**. In laboratories and medical equipment, some precision instruments have very high requirements for the electromagnetic environment. Conductive PS provides a good electromagnetic shielding environment for these instruments, ensuring normal operation and measurement accuracy. ### 4. Key Parameters at a Glance (Selection Reference) | Item | Parameter / description | | --- | --- | | Material | Conductive PS (polystyrene) compound | | Main functions | Antistatic + electromagnetic interference (EMI) shielding | | Base resin density | 0.89–0.91 (one of the lightest plastic varieties) | | Surface resistivity | 10⁴–10⁹ Ω/sq (tunable via filler type and dosage) | | Heat resistance | Approx. 70 °C–100 °C (relatively low Tg and melting point) | | Thermal expansion | Relatively large coefficient; noticeable dimensional change at high temperature | | Chemical resistance | Good; withstands certain acids, alkalis and salts | | Processing methods | Injection molding, extrusion, blow molding | | Product forms | PS sheets, PS plates, PS pipes, injection molded parts | | Recommended applications | Semiconductor packaging materials, electronic housings and shielding covers, precision instrument EMI shielding, electrical insulation | ### 5. Frequently Asked Questions (FAQ) **Q1: What does conductive PS compound do?** A: It is a conductive compound based on polystyrene (PS) that combines antistatic and electromagnetic interference (EMI) shielding functions. **Q2: What is the surface resistivity of conductive PS?** A: Surface resistivity ranges from 10⁴ to 10⁹ Ω/sq, and different conductive properties can be achieved by adjusting the type and amount of conductive filler. **Q3: How does conductive PS perform at high temperature?** A: Its glass transition temperature and melting point are relatively low, so thermal stability is poor — generally around 70 °C–100 °C. Near or above the glass transition temperature, hardness drops and dimensional stability deteriorates, so it is not recommended for high-temperature environments or applications with high heat resistance requirements. **Q4: Where is conductive PS used?** A: Semiconductor packaging materials, antistatic additives, computer anti-electromagnetic screens, intelligent windows, solar cells, mobile phones and micro TV screens; in electrical engineering for motor slot and interphase insulation and capacitor/transformer/wire and cable packaging insulation; and for electromagnetic shielding housings and covers on electronic products. **Q5: Which processing methods are suitable?** A: Injection molding, extrusion and blow molding, producing PS sheets, plates, pipes and injection molded parts in various shapes. **Q6: What about the chemical resistance of conductive PS?** A: It has good chemical resistance and withstands most chemicals, including certain acids, alkalis and salts, making it especially suitable for semiconductor packaging materials. | Product Description | Conductive PS Compound | | --- | --- | | RenJie®Grade | CT-08A/CT-08B | | Surface Resistivity | 10^2~10^5 Ohm/sq | | Volume Resistivity | 10^2~10^4 Ohm.cm | | Appearance | Granules/Black | | Conductive filler | Carbon black /Carbon nanotube etc | | Processing | Injection/Extrusion | | Applications | PS sheet, conductive PS carrier tape | ### Related products [View all**](/en/products) [*709AN/747AN/920AN #### Antistatic ABS Compound RENJIE® antistatic ABS compound with 10^8–10^10 Ω surface resistance. 709A… View details*](/en/product/antistatic-abs-compound)[*757CF20/757CF30/757CF15 #### 15% Carbon fiber ABS RENJIE carbon fiber reinforced ABS is a high-performance thermoplastic com… View details*](/en/product/15-carbon-fiber-abs)[*70CF30/70CF20/70CF15 #### 30% Carbon Fiber Nylon 66 Explore Carbon Fiber Conductive Nylon properties, CFRTP Conductive Nylon g… View details*](/en/product/30-carbon-fiber-nylon-66) ### Request a quotation or sample We reply with price, MOQ and lead time within one business day. *Your name***Company Email***Phone / WhatsApp Country Product of interest Quantity Target price Application Message Send inquiry* We only use your details to reply to this inquiry. 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