Zinc Stearate
Zinc Stearate
⭐ What is zinc stearate? The usage, benefits, and the wide range of industries that use
🧴 Zinc Stearate is "metallic soap" that is obtained from Stearic Acid with the action between stearic and zinc. It's a white powder, swell, slippery, and insoluble in water. And it is also widely used in the industries because it has many key properties, such as
- External & Internal Lubrication (Reducing the friction in both the mold surface and the polymer texture)
- Release Agent (It helps the workpiece to be easily released from the mold.)
- Dispersing Agent (Helping in the contribution of CaCO₃ and Pigment)
- Anti-caking / Flow Aid (For the powder and powder mixed)
- Decorated for making smoothness, slipperiness, and shininess
⚠️ The side effect of Zinc Stearate
There are some side effects that have to be concerning, even if it's a non-dangerous substance. Including:
❗ 1) Risking damage to the Respiratory system
Due to its small powder, it might be
- Coughing
- Irritation
- Headache
❗ 2) Accumulation may occur in the air filtration system
It might be clogged if the vacuuming system is not working properly
❗ 3) A possible cause for color adhesion in some systems
It might make the surface slippery, causing the paint to not adhere well if there is too much implementation
❗ 4) The incompatibility in some types of plastic
PHR control (Must)
such as ABS and PS, have to be concerned
🏭 The usage of Zinc stearate in the industry
📌 1. Plastic and PVC industries (Main)
- PVC Pipe, Profile
- PVC Sheet, Film
- Injection Plastics
- Masterbatch & Compound
- Engineering Plastics (ABS, PS, PE, PP)
The properties:
✔ Good flow
✔ Reduce the friction
✔ Preventing the mold from sticking
✔ Increases surface smoothness
📌 2. Rubber industry
Quicklime is used as a
- lubricant
- mold release
- processing aid
Perfect for NBR, SBR, EPDM
📌 3. Paint/Ink/Powder Coating industries
Helping in:
- Contributing to Pigment
- Reducing the cause of sedimentation
- Making the film coating smooth
📌 4. Powder Metallurgy industry
It acts as a lubricant between the metal powder and the mold
📌 5. Cosmetics industry
Found in:
- Powder
- Blushes
- Foundation
Because it's giving the silky
📌 6. Paper and Coating industry
Making the surface smooth and paper surface, controlling/coating pads for a smoother surface
Product Details
Key featured:
- Appearance: Fine white powder
- Melting Point: 118–125°C
- ZnO Content: 10–12%
- Insoluble in water
- Well thermal stability
- A well dispersibility, particularly in PVC and CaCO₃
- (Non‑yellowing grade)
- Bulk density: 0.15–0.30 g/cm³
⭐ Packaging Options
- Bag 20 Kg.
⭐ The frequently asked question (FAQ)
Q1: How is zinc stearate different from calcium stearate?
- Zinc Stearate = lubricant + release + dispersing
- Calcium Stearate = lubricant + acid scavenger
Commonly used in PVC and Masterbatch
Q2: How much can we use?
- Plastics: 0.2–1 phr
- Rubber: 0.3–1 phr
- Powder coating: 0.5–2%
Q3: Is it safe?
It's safe, but should be
✔ Avoiding inhalation
✔ Using the dust filtration
✔ Using for the industry grade
