Product Description
As a professional Chinese manufacturer of Calcium Carbonate Powder, we specialize in producing high performance, industrial grade additives tailored explicitly for rubber product businesses-with a core focus on enhancing the quality and cost effectiveness of rubber hoses. Our Calcium Carbonate Powder is not just a common filler; it's a precision-engineered additive that solves critical pain points in industrial hose manufacturing: weak tear resistance, short service life, high production costs, and inconsistent performance. Sourced from China's top-grade limestone deposits (primarily in Hebei, Shandong, and Guangxi regions renowned for low impurity, high whiteness limestone) and processed via advanced, eco-friendly technologies.
1. What Is Calcium Carbonate Powder for Rubber Hose Additives?
Calcium Carbonate (CaCO3) is a naturally occurring mineral derived from high-purity limestone. When processed into a fine, uniform powder (our standard particle sizes range from 325 to 2000 meshes, customizable for specific needs), it becomes a versatile additive for rubber manufacturing. Unlike synthetic rubber additives (which may contain harsh chemicals that degrade rubber elasticity or harm the environment), our Calcium Carbonate Powder is 100% natural, non-toxic, and chemically stable. It integrates seamlessly with all types of rubber bases used in industrial hoses-including EPDM (ethylene propylene diene monomer), NBR (nitrile butadiene rubber), SBR (styrene butadiene rubber), and NR (natural rubber).
For rubber hose manufacturers, the primary value of our Calcium Carbonate Powder lies in its ability to enhance mechanical properties (like tear resistance and wear resistance) while reducing raw material costs (by partially replacing expensive rubber polymers). It's a "win-win" additive: it improves product quality and makes your manufacturing process more economical-two priorities for any industrial business looking to stay competitive.
2. Core Benefits: Why Calcium Carbonate Powder Elevates Rubber Hoses
Industrial rubber hoses face tough operating conditions: they're exposed to high pressure, friction, temperature fluctuations, and chemical exposure (e.g., oil, water, or industrial fluids). Weak tear resistance is the top reason hoses fail prematurely costing businesses time and money in replacements.
2.1 Dramatically Enhances Tear Resistance
Tear resistance is non-negotiable for industrial hoses-even a small tear can expand under pressure, leading to leaks or complete hose failure. Our Calcium Carbonate Powder's ultra-fine particle size (325-2000 meshes) and high dispersion ability let it distribute evenly throughout the rubber matrix, creating a "reinforcing network" that blocks tear propagation. When a hose is stretched or nicked, the calcium carbonate particles act as barriers, preventing the tear from spreading further.
2.2 Boosts Wear Resistance (Ideal for High Friction Environments)
Industrial hoses often rub against rough surfaces (e.g., concrete floors, metal pipes, or gravel) during use. Poor wear resistance leads to surface abrasion, which thins the hose wall and increases the risk of rupture. Our Calcium Carbonate Powder's hard, dense structure enhances the rubber's surface hardness without compromising its flexibility. This means the hose can withstand repeated friction without wearing down.
2.3 Improves Dimensional Stability (Prevents Shrinkage Warping)
During rubber hose manufacturing, the rubber compound often shrinks or warps when cooled after extrusion. This leads to inconsistent hose diameters or wall thicknesses, which can cause pressure imbalances (e.g., thinner walls burst more easily under high pressure). Our Calcium Carbonate Powder acts as a "stabilizer" in the rubber matrix: its rigid particles restrict the movement of rubber molecules during cooling, minimizing shrinkage and ensuring uniform dimensions.
3.Why Choose a Chinese Manufacturer for Calcium Carbonate Powder?
3.1Unmatched Raw Material Quality (China's Limestone Advantage)
China is the world's largest producer of high-purity limestone, with deposits that contain 98-99% calcium carbonate (compared to 90-95% in other countries). Our mines in Hebei and Shandong produce "high-whiteness limestone" (whiteness ≥93%), which results in a powder that doesn't discolor the rubber-critical for hoses that need a clean, uniform appearance.
We control the entire raw material supply chain: we select limestone blocks by hand to remove impurities (e.g., sand, clay), then crush and grind them using German-made equipment to ensure particle uniformity.
Specification
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Product Name
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Calcium Carbonate Powder
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Type
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Heavy Calcium Carbonate Powder/ Precipitated Calcium Carbonate Powder
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Usage
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Rubber, paints, paper, etc.
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Size
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200mesh,325mesh,400mesh,600mesh,800mesh,1250mesh, 2000mesh,
4000mesh, etc.
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Package
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25kg/bag, 50kg/bag, ton bags, pallet, or as customer requirement.
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CaCo3 content ≥
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98%-100%
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PH value(10%soliquoid)
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8.0-10.0
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Particle size um(average)
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3.0-4.0
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Moisture Content ≤
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0.3
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Oil Absorption ml/100g ≤
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30
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Insoluble substance in HCL acid %≤
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≤0.2
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activated rate %≥
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95
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Fe content ≤
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0.1
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Mn content , ≤
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0.008
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Residue 125um % ≤
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0.01
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Whiteness ≥
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90
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Application
Why choose us
Company Profile
FAQ
1. Who are we?
We are based in Hebei, China, start from 2015,sell to Domestic Market(30.00%),North America(20.00%),Southeast Asia(20.00%),South Asia(5.00%),Eastern Asia(5.00%),Western Europe(5.00%),Southern Europe(5.00%),Oceania(3.00%),South America(2.00%),Northern Europe(2.00%),Africa(2.00%),Mid East(1.00%),Central America(0.00%),Eastern Europe(0.00%). There are total about 51-100 people in our office.
2. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment
3.What can you buy from us?
Kaolin, Iron Oxide Pigments, Tourmaline, Silica, Colored Sand
4. Why should you buy from us not from other suppliers?
We are the manufacturer of the minerals materials, especial in mica, iron oxide and diatomite powder. our company has professional development group, we can accpet OEM/ODM. And our products selled not only in our country but also in asia southeast popular.
5. What services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,CIP,FCA,DDP,DDU,Express Delivery;
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T,L/C,MoneyGram,Credit Card,PayPal,Western Union,Cash,Escrow;
Language Spoken:English,Chinese
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