HK-111C Coating and Paints Type Wollastonite Powder

Description:

Wollastonite has bright color and high reflectivity, which could be suitable for the production of high-quality white paints and clear transparent paints.wollastonite is a good additive with higher fraction of color coverage and homogeneous distribution. Based on its UV resistance, it is widely used in interior wall paints, exterior wall paints, special paint (especially fireproof paint) and latex paints.

Wollastonite powder which can partly replace titanium dioxide to produce paint coating can not only improve the color of products, improve the gloss of the paint, enhance the anti-tensile ability of the paint, reduce the crack, but also can reduce the oil absorption and enhance the anti-corrosion ability.

The finer particle size, higher whiteness and pH value can greatly improve the color and coating property of the paints, which can be helpful to produce anticorrosive coating for metal equipment such as steel pieces. Wollastonite can also be used as the filler of paint coating to improve the physical and chemical properties, durability and weather resistance and reduce the fracture and aging of the paint.

The quality requirements of wollastonite in paint coatings are: SiO2 49%min, CaO 45%min, Fe2O3 0.2%, 325 mesh, mineral powder oil absorption amount is 20 ~ 25g/100g, water soluble matter 0.5%, water extraction pH value is 7 ~ 9, whiteness 90%.

Our advantages:

1. lower Fe content

2. Lower loss on ignition (LOI)

3. Fewer surface defects

4. Improved shrinkage control

5. Higher impact strength

6. Faster drying times

7. higher whiteness

Parameters:

Short-acicular Wollastonite Powder	Class-1	Class-2	Class-3
CaO	43%min	30%min	20%min
SiO2	49%min	57%min	60%min
MgO	1.5%max	1.5%max	1.5%max
Fe2O3	0.5%max	0.5%max	1.5%max
LOI	1.5%max	2-4%	5%max
Whiteness	88-91	85-88	60min
Size	200mesh, 325mesh, micropowder, others
Packaging	Jumbo bag; 100kg bag; 50kg bag; 25kg bag; or customized

Acicular Wollastonite Powder	WFA90	WFA80	WFA70	WFA60
SiO2	49%min	49%min	49%min	49%min
CaO	44-48%	44-48%	44-48%	41-46%
Fe2O3	0.6%max	0.6%max	0.6%max	0.6%max
MgO	1.5%max	1.5%max	1.5%max	1.5%max
LOI	1.5%max	2-4%	2-4%	7%max
Aspect Ratio	about 1:20	1:15min	1:15min	1:10min

Other information:

Packaging Details: According to customer's requirement.(25kgs/bag,50kgs/bag or 1mt/bag, etc.)