National High-tech Enterprise · Guangdong Hico New Materials
Wollastonite Powder
Wollastonite
Needle-like reinforcing filler, length-to-diameter ratio 15-20:1, chain metasilicate mineral, 2 series & 4 models, significantly improving mechanical strength and dimensional stability.
2 Series
Product Series
4 Models
Selected Models
15-20:1
L/D Ratio
Free
Samples Available
Needle-like Structure
High L/D Ratio
Reinforcing
Free Samples
KEY INDICATORS
Key Indicators
Key performance parameters of wollastonite
15-20:1
L/D Ratio
Needle-like reinforcement across all models
4 Models
Product Models
3 raw ore + 1 modified
≥90
Max Whiteness
HY-W06 whiteness 90±2
≤0.5%
Moisture
Low moisture across all models
PRODUCT ADVANTAGES
Four Core Advantages
Needle-like reinforcement · High L/D ratio · Low dielectric · Weather & crack resistance
01
Needle-like Structure · Reinforcing
The unique needle-like structure effectively improves tensile strength, bending strength and other mechanical properties of products. It provides significant reinforcement in modified plastics and is a cost-effective alternative to glass fiber.
02
High L/D Ratio · Dimensional Stability
All models feature a length-to-diameter ratio of 15-20:1. The needle-like particles are randomly arranged in the plane, significantly improving dimensional stability and reducing shrinkage and warpage.
03
Low Dielectric · High Refractive Index
Features a low dielectric index and high refractive index that maintains surface flatness and gloss, suitable for engineering plastics and electronic materials requiring electrical insulation and surface quality.
04
Scratch Resistance · Weather & Crack Resistance
In coating applications, it improves scratch resistance, weather resistance and crack resistance while maintaining surface gloss. Widely used in industrial coatings, architectural coatings and other functional coatings.
WOLLASTONITE ADVANTAGES
Wollastonite Core Advantages
Needle-like structure provides excellent reinforcement, insulation and weather resistance
🔍 Wollastonite Characteristics
Wollastonite is a chain metasilicate mineral, triclinic crystal system, fine plate crystal, aggregate radial or fibrous. Its unique needle-like structure significantly improves mechanical strength and dimensional stability in modified plastics, and enhances processing performance. Hico high L/D ratio wollastonite delivers outstanding results across various thermoplastic resin systems.
Needle-like Reinforcement
Unique needle-like structure, bidirectional reinforcement of tensile/bending strength
High L/D Ratio
15-20:1 length-to-diameter ratio, significantly improving dimensional stability
Low Dielectric & High Insulation
Low dielectric index, suitable for electrical insulation applications
High Refractive Index
Maintains surface flatness and gloss, enhancing product appearance
Scratch & Weather Resistance
Improves coating scratch resistance, weather resistance and crack resistance
PRODUCT SERIES
Two Series for Precise Matching
Wollastonite + Modified wollastonite, covering plastics, rubber, coatings & printing inks
🔬 Wollastonite Needle-like Structure Principle
Wollastonite is a chain metasilicate mineral, triclinic crystal system, fine plate crystal, aggregate radial or fibrous. Its unique needle-like structure significantly improves mechanical strength and dimensional stability in modified plastics, and enhances processing performance. Hico high L/D ratio wollastonite delivers outstanding results across various thermoplastic resin systems.
SERIES 01
Wollastonite
3 models · Multiple particle sizes
Unmodified wollastonite retaining natural needle-like structure. 3 models cover fine (D50: 5.47µm), medium (D50: 8.66µm), and coarse (D50: 18.01µm) particle size ranges. Whiteness 83-90, L/D ratio 15-20:1 across all models. Suitable for modified plastics, rubber, coatings and other systems.
HY-W06
Fine · D50: 5.47µm
HY-W10
Medium · D50: 8.66µm
HY-W18
Coarse · D50: 18.01µm
Whiteness 83-90
L/D ratio 15-20:1
Natural needle-like structure
High cost-effectiveness
SERIES 02
Modified Wollastonite
1 model · Surface modified
Specially surface-modified to significantly reduce oil absorption value (15-25 g/100g) with better resin compatibility. Suitable for applications requiring higher processing performance and surface quality. WAP-1C offers excellent dispersibility across various resin systems.
WAP-1C
D50: 6.5-11.0µm · Greyish white
Oil absorption 15-25
Surface modified
Excellent compatibility
Good dispersibility
Note: All models feature a length-to-diameter ratio of 15-20:1, the core indicator of wollastonite's needle-like reinforcement. HY-W06 has the highest whiteness (90±2), suitable for applications with high appearance requirements; WAP-1C is the modified type with the lowest oil absorption value and optimal processing performance. Specific product values are subject to the factory inspection report.
TECHNICAL PARAMETERS
Technical Parameters
3 raw ore models + 1 modified model, all with L/D ratio 15-20:1
📊 Wollastonite & Modified Wollastonite — Full Parameter Table
| Product Name | Model No. | Whiteness | D50 (µm) |
D90 (µm) |
Oil Absorption (g/100g) |
Moisture (%) |
Loss on Ignition (%) |
L/D Ratio |
|---|---|---|---|---|---|---|---|---|
| Wollastonite | HY-W06 | 90±2 | 5.47 | 20.17 | 25-42 | ≤0.50 | ≤5.00 | 15-20:1 |
| Wollastonite | HY-W10 | 85±2 | 8.66 | 27.38 | 25-42 | ≤0.50 | ≤5.00 | 15-20:1 |
| Wollastonite | HY-W18 | 83±2 | 18.01 | 58.73 | 20-35 | ≤0.50 | ≤5.00 | 15-20:1 |
| Modified Wollastonite | WAP-1C | Greyish white | 6.5-11.0 | 27.0-35.0 | 15-25 | ≤0.50 | ≤5.00 | 15-20:1 |
📋 HY-W06 has the highest whiteness (90±2) and finest D50 (5.47µm), suitable for applications with high appearance and fineness requirements; HY-W18 has D90 up to 58.73µm, suitable for high-filling, low-cost applications; WAP-1C is the modified type with the lowest oil absorption value (15-25) and best resin compatibility. All models feature L/D ratio 15-20:1. Specific product values are subject to the factory inspection report.
PRODUCT INTRODUCTION
Product Introduction
Wollastonite · Chain metasilicate · Needle-like reinforcing filler
Wollastonite is a chain metasilicate mineral, triclinic crystal system, fine plate crystal, aggregate radial or fibrous. In modified plastics, its unique needle-like structure primarily serves to reinforce mechanical strength, improve dimensional stability, and enhance processing performance.
As a high-performance mineral modified material, Hico high L/D ratio wollastonite delivers outstanding results across various thermoplastic resin systems. Its low dielectric index and high mechanical strength enable products to maintain excellent electrical insulation while achieving superior mechanical properties.
Wollastonite also features a high refractive index that maintains surface flatness and gloss. In coating applications, it improves scratch resistance, weather resistance and crack resistance, making it a premium mineral modified solution alternative to traditional fillers.
Needle-like Reinforcement
Unique needle-like structure, bidirectional reinforcement of tensile/bending strength
High L/D Ratio
15-20:1 length-to-diameter ratio, significantly improving dimensional stability
Low Dielectric & High Insulation
Low dielectric index, suitable for electrical insulation applications
High Refractive Index
Maintains surface flatness and gloss, enhancing product appearance
Scratch & Weather Resistance
Improves coating scratch resistance, weather resistance and crack resistance
Modified Type Available
WAP-1C surface modified, low oil absorption, good compatibility
APPLICATION AREAS
Four Application Areas
Covering modified plastics, rubber, coatings and printing inks
Area 01
Modified Plastics
Wollastonite's unique needle-like structure significantly improves tensile strength, bending strength and dimensional stability of thermoplastic resins, reducing shrinkage and warpage. It is a cost-effective reinforcing filler alternative to glass fiber, widely used in PA, PP, PBT and other engineering plastics.
Area 02
Rubber
Wollastonite improves mechanical strength and weather resistance in rubber products. The needle-like structure provides isotropic reinforcement, while the low water absorption ensures performance stability in humid environments. Suitable for various industrial rubber products.
Area 03
Coatings
Wollastonite improves scratch resistance, weather resistance and crack resistance in coatings. Its high refractive index maintains surface flatness and gloss. The needle-like structure also enhances coating barrier properties and adhesion. Widely used in industrial coatings, architectural coatings and other functional coatings.
Area 04
Printing Inks
Wollastonite improves adhesion and mechanical properties in printing inks. The needle-like structure enhances ink film strength and durability, while the low oil absorption value helps control ink viscosity. Suitable for various printing inks and specialty ink formulations.
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