General‑Purpose Release Powder Zinc Stearate/Amide Wax Blend CAS 557‑05‑1 is a cost‑effective composite processing additive formulated with zinc stearate and fatty amide wax. When homogenously mixed into rubber compounds, it provides internal lubrication throughout the vulcanization procedure. Under high‑temperature molding conditions, it migrates moderately to the mold interface to form a thin lubricating layer for smooth demolding. This blended powder decreases mold fouling frequency, shortens

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Product Detail Page: This rubber release powder is produced by melt compounding of zinc stearate and selected fatty amide wax, followed by cooling, pulverization and sieve screening. Each production batch is tested for melting range, particle‑size distribution, thermal stability, lubricating property, dispersion performance and vulcanization interference assessment before shipment.

Rubber vulcanization molding continuously subjects rubber stock to elevated temperature and pressure inside closed molds. Single‑component zinc stearate provides basic lubricating effect, yet it tends to generate heavy deposits on mold surfaces after repeated vulcanization cycles. Pure amide wax possesses excellent releasing capability, but excessive wax migration may cause severe surface blooming on finished rubber goods. Conventional cheap low‑grade release powders may negatively interfere with rubber cross‑linking, altering curing speed, hardness and mechanical properties of vulcanized rubber. Poor dispersion of release powder within rubber matrix will create surface specks, streaks and uneven surface texture on molded rubber parts. Gradual accumulation of vulcanization residues forces frequent mold cleaning, stops production and increases overall manufacturing costs for rubber workshops.

When this blended release powder is accurately weighed and incorporated during rubber kneading on internal mixer or open mill, fine particles disperse uniformly inside uncured rubber compound. During high‑temperature vulcanization, a controlled portion of active lubricating ingredients migrates toward the metal mold‑cavity surface and builds a continuous thin lubricating boundary film. The interfacial film lowers adhesive force between hot vulcanizing rubber stock and mold steel, facilitating clean demolding of finished rubber components. The synergistic formula balances lubrication and anti‑blooming performance. It reduces stubborn mold fouling formed during successive vulcanization cycles without severely disturbing the rubber cross‑linking reaction. This product delivers reliable processing performance at a favorable material cost for general rubber production.

Accurate dosage control during rubber compounding is critical. Under‑dosage yields insufficient lubrication and releasing performance, which results in rubber sticking, tearing and heavy mold fouling. Excessive loading leads to obvious surface blooming on finished rubber products, and may degrade tensile strength, abrasion resistance and subsequent bonding or painting capacity of vulcanized rubber. Lab mixing trials and actual vulcanization molding tests are strongly recommended before large‑scale production. This blended release powder is compatible with natural rubber, SBR, NBR and other general synthetic rubber systems.

For processing operations, feed the blended release powder together with rubber base stock, curing agents and fillers during mixing procedure on internal mixer or two‑roll open mill.

Major application fields: economical internal release and lubricating additive for general‑purpose rubber vulcanization; anti‑fouling processing aid for molded rubber parts; functional compounding powder for mass‑produced industrial rubber articles.

Store the product in tightly‑sealed original bags within 15‑28℃, keep dry warehouse environment, avoid direct sunlight, high‑temperature storage and heavy stacking pressure to prevent caking.

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General-Purpose Release Powder Zinc Stearate/Amide Wax Blend CAS 557-05-1, Cost-Effective Internal Additive for Rubber

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.