Calcium Carbonate Whisker (Aragonite) is a fibrous aragonite‑type calcium carbonate crystal, further treated with silane coupling agent for surface modification. Benefiting from its unique micro‑whisker fibrous morphology, this mineral filler provides both reinforcing and toughening functions within engineering plastic matrices. The silane coating improves interfacial adhesion between whisker fibers and polymer resins. It effectively lowers molding shrinkage, restricts warpage and upgrades mecha

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Product DetailsThis aragonite calcium carbonate whisker is synthesized under controlled hydrothermal conditions to form slender fibrous crystal morphology. After crystallization, the raw whisker material undergoes purification, filtration, drying and air classification to remove oversized crystal aggregates. Continuous silane surface‑modification treatment is then carried out on the surface of individual whisker fibers.

Untreated aragonite whisker exhibits hydrophilic surface characteristics. When directly mixed with non‑polar or weakly‑polar engineering plastics, poor interfacial affinity causes weak bonding between fiber and resin, which may result in reduced impact strength and inferior dispersion. The silane modification converts the particle surface to organophilic, enhancing wetting and interfacial bonding between whisker fibers and molten polymer during extrusion compounding and injection molding.

With proper fiber length‑to‑diameter ratio and low heavy‑metal impurities, this product creates a micro‑fiber network inside the plastic matrix. It can distribute and transfer external stress across the composite material. Consequently, flexural strength, flexural modulus and heat‑deflection temperature of modified engineering plastics are increased. Meanwhile, it delivers certain toughening performance to alleviate material brittleness, which is a prominent advantage compared with conventional granular calcium carbonate fillers. It also decreases molding shrinkage and suppresses part warpage for thin‑wall injection‑molded components.

Unlike glass fiber, aragonite calcium carbonate whisker causes relatively mild abrasion to extruder screws and injection moulds, extending the service life of processing equipment. It is compatible with PA, PBT, PP, ABS and other engineering thermoplastic systems. Typical application scenarios include automotive plastic structural parts, electrical housing components, household appliance plastic frames and precision injection‑molded articles requiring low‑warpage performance.

Packaging adopts 25 kg inner‑liner moisture‑proof woven bags. Keep packages tightly sealed during transportation and warehouse storage. Store in cool, dry indoor environment to avoid moisture‑induced agglomeration of whisker crystals. Do not stack pallets excessively high to prevent bag rupture. Wear dust‑proof masks and protective gloves during material handling.

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Calcium Carbonate Whisker (Aragonite) CAS 471-34-1, Silane-Modified Reinforcing Toughening Filler for Engineering Plastics

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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.