1. About RenJie® Conductive Masterbatch

1.1 Wide Range of End-Use Applications

In the continuous evolution of materials science, conductive masterbatch — an innovative functional material — is playing an increasingly prominent role across many fields. With its unique formulation and preparation process, RenJie® conductive masterbatch gives plastic products excellent conductive properties, bringing new solutions to the electronics, automotive and packaging industries.

1.2 Optional Base Resin Types

RenJie® conductive masterbatch is built on pure resin, using high oil absorption value, ultra-fine particle size conductive filler as the conductive medium, and is compounded with toughening agents, reinforcing agents, coupling agents, antioxidants and other additives through specific processes such as internal mixing and twin-screw extrusion.

As a professional manufacturer of conductive masterbatch, RenJie® maintains year-round stock of conductive masterbatch in the following base materials:

These masterbatches are suitable for injection molding, extrusion, film blowing and other processing technologies.

1.3 Diversified Formulations

The conductive filler formulation is also highly diverse, covering carbon black, carbon nanotubes, stainless steel fiber and more. The filler ratio determines the resistance of the masterbatch and the required loading level. Among these, carbon black is favored for its high cost-effectiveness in conductivity.

2. Multiple Advantages of RenJie® Conductive Masterbatch

3. Standardize the Processing to Ensure Stable Quality

4. Carbon Nanotube (CNT) Enhancement Leads High-End Applications

Carbon nanotube-enhanced conductive masterbatch — such as 300CNT, a 100% multi-walled carbon nanotube (MWCNT) conductive and antistatic masterbatch — has emerged in the high-end field with its unique advantages:

• Low loading, high efficiency: an addition of only 2% achieves antistatic performance, suitable for a wide range of occasions requiring conductivity and antistatic behavior;
• Leading conductive performance: at the same addition ratio, its conductive effect far exceeds that of plastic masterbatch with added carbon black or carbon fiber. More than 3 times the amount of carbon black masterbatch is required to achieve the conductive performance of 300CNT;
• Broad process and resin compatibility: suitable for injection molding and extrusion. For general engineering plastic resins such as ABS, PC, PS, PP and PA6, the addition amount is usually 2%–8%, bringing the surface resistance of the product to 10⁴–10⁹ Ω.

5. Frequently Asked Questions (FAQ)

Q1: What does conductive masterbatch do? A: It imparts antistatic or electromagnetic shielding functions to plastic products, meeting the electrostatic protection and electromagnetic compatibility requirements of electronic equipment. In electronic component packaging, for example, packaging material made with conductive masterbatch effectively prevents static electricity from damaging precision parts.

Q2: Which base resins does RenJie® conductive masterbatch cover? A: Year-round stock covers HIPS, LLDPE, HDPE, PP, PVC, ABS, POM and Nylon, all suitable for injection molding, extrusion and film blowing.

Q3: What loading of conductive masterbatch is required? A: It depends on the target resistance and should be verified by testing. For 300CNT MWCNT masterbatch, 2% achieves antistatic performance, while general engineering plastics such as ABS, PC, PS, PP and PA6 typically use 2%–8%.

Q4: How do I choose between carbon black and carbon nanotube masterbatch? A: Carbon black is cost-effective with good conductivity and is the most widely used filler, but it usually turns the part black and may reduce mechanical properties such as impact strength. Carbon nanotube masterbatch works at lower loading with better conductivity and less impact on the base resin, making it suitable for high-end applications and parts with strict appearance or mechanical requirements.

Q5: Does conductive masterbatch need pre-drying before processing? A: Yes, pre-drying is recommended — especially for hygroscopic materials such as carbon black conductive masterbatch — to avoid moisture affecting processing performance and product quality.

Q6: How should conductive masterbatch be stored? A: Store it in a dry, cool and ventilated place, away from moisture and high temperature, to prevent performance deterioration.