Processing Aid for High-Speed LSZH/HFFR Cable Extrusion – Silicone Masterbatch SC920

Silicone processing aid SC 920 is a special silicone processing aid for LSZH and HFFR cable materials which is a product composed of special functional groups of polyolefins and co-polysiloxane. The polysiloxane in this product can play a anchoring role in the substrate after copolymerization modification, so that the compatibility with the substrate is better, and it is easier to disperse, and the binding force is stronger, and then give the substrate more excellent performance. It is applied to improve the processing performance of materials in LSZH and HFFR system, and is suitable for high-speed extruded cables, improve output, and prevent the extrusion phenomenon such as unstable wire diameter and screw slip.

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Product Detail

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Description

Product Specifications

Grade	SC920
Appearance	white pellet
Melt index (℃) (190℃,2.16kg)(g/10min)	30~60(typical value)
Volatile matter(%)	≤2
Bulk density(g/cm³)	0.55~0.65

Benefits

1, When applied to the LSZH and HFFR system, can improve the extrusion process of the mouth die accumulation, suitable for high-speed extrusion of the cable, improve production, prevent the diameter of the line instability, screw slip and other extrusion phenomenon.

2, Significantly improve the processing flowability, reduce the melt viscosity in the production process of high-filled halogen-free flame-retardant materials, reduce torque and processing current, reduce equipment wear, reduce product defect rate.

3, Reduce the accumulation of die head, reduce the processing temperature, eliminate melt rupture and the decomposition of raw materials caused by high processing temperature, make the surface of the extruded wire and cable smoother and brighter, reduce the friction coefficient of the surface of the product, improve the smooth performance, improve the surface luster, give smooth feel, improve scratch resistance.

4, With special modified silicone polymer as the active ingredient, improve the dispersion of flame retardants in the system, provide with good stability and non-migration.

How to use

After mixing SC 920 with resin in proportion, it can be formed directly or used after granulation. Recommended addition amount: When the addition amount is 0.5%-2.0%, it can improve the processability, fluidity and release of the product; When the addition amount is 1.0%-5.0%, the surface properties of the product can be improved (smoothness, finish, scratch resistance, wear resistance, etc.)

Package

25Kg / bag, craft paper bag

Storage

Transport as non-hazardous chemical. Store in a cool, well ventilated place.

Shelf life

Original characteristics remain intact for 24 months from the production date, if kept in recommend storage.

FAQ

Frequently Asked Questions About Silicone Processing Aids for LSZH/HFFR Cable Extrusion

1. How can processing aids improve throughput in high-speed LSZH/HFFR cable extrusion?

High loadings of ATH/MDH flame-retardant fillers can increase melt viscosity, extrusion torque, and die pressure, limiting production output. SILIKE Silicone Masterbatch SC920 is designed to improve processability in highly filled LSZH/HFFR cable compounds. By helping reduce processing resistance, it may support higher extrusion throughput and more stable production under suitable processing conditions.

2. How can screw slippage and cable diameter fluctuations be minimized during high-speed extrusion?

Screw slippage and diameter fluctuations can be associated with inconsistent material feeding, unstable melt delivery, and extrusion conditions. Functionalized silicone processing aids such as SC920 may help improve melt flow and processing stability, contributing to more consistent cable dimensions. Extruder configuration, temperature settings, and line speed should also be considered during process optimization.

3. What additives can help reduce die drool and die build-up in highly filled HFFR cable compounds?

Silicone-based processing aids can be evaluated to improve melt flow and reduce material accumulation at the extrusion die. SC920 may help reduce die drool and die build-up in suitable HFFR formulations. The results depend on filler loading, polymer composition, die design, additive concentration, and operating conditions.

4. Can silicone masterbatches improve surface slip and abrasion resistance in cable compounds?

Silicone masterbatches can help improve surface lubricity and reduce the coefficient of friction (COF) in compatible polymer systems. In suitable cable formulations, SC920 may also contribute to smoother surfaces and improved abrasion resistance. The resulting properties should be evaluated using the intended compound and relevant test methods.

5. What is the recommended dosage of silicone processing aids for LSZH/HFFR cable compounds?

The appropriate dosage depends on the additive technology, active content, polymer formulation, and target performance. For SILIKE Silicone Masterbatch SC920, the recommended addition level is 0.5–2.0 wt% for processing improvements and 1.0–5.0 wt% for surface modification.

The optimum dosage should be established through application-specific trials, with attention to extrusion performance and the final cable's mechanical, flame-retardant, and electrical requirements.

6. How do manufacturers select a suitable silicone processing aid for high-speed cable extrusion?

Selection should consider the base polymer, ATH/MDH filler loading, extrusion equipment, operating conditions, and primary processing challenges. Relevant evaluation criteria may include extrusion torque, die pressure, throughput, screw slippage, cable diameter stability, and surface quality.

For highly filled LSZH/HFFR systems, SC920 may be considered where improved processing efficiency and high-speed extrusion stability are priorities. Comparative trials are recommended to determine suitability and the appropriate addition level.

Chengdu SILIKE Technology Co., Ltd. is a leading Chinese manufacturer specializing in silicone-based plastic additives and thermoplastic silicone elastomers, with over 20 years of expertise in silicone–polymer integration. SILIKE offers a comprehensive portfolio, including silicone processing aids, silicone masterbatches, silicone powders, anti-scratch and anti-wear additives, PFAS-free and fluorine-free processing solutions, PFAS- and siloxane-free polymer processing aids, non-migrating slip and anti-blocking additives, dispersants, matt-effect masterbatches, wet slip-resistant and wear-resistant additives, as well as Si-TPV dynamic vulcanized thermoplastic silicone elastomers that combine silicone-like comfort with thermoplastic processability and recyclability.

Serving industries such as automotive, wire & cable, films, footwear, WPCs, electronics, consumer goods, and sustainable biodegradable materials, SILIKE helps manufacturers improve processing efficiency, surface quality, durability, and tactile performance while meeting increasingly strict environmental and regulatory requirements. Guided by the philosophy “Innovating Silicone, Empowering New Values,” SILIKE is a trusted innovation partner enabling safer, high-performance, and future-ready polymer solutions.

For more information, technical data sheets, or application test results, please feel free to contact Ms. Amy Wang via email at amy.wang@silike.cn or WhatsApp/mobile at +86 151 0828 0799.

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Next: Functionalized Silicone Processing Aid for High-Speed LSZH/HFFR Cable Extrusion and Die Build-Up Control – Silicone Masterbatch SC930

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