calcium carbonate is a compound with the formula caco3, the major component of limestone. in nature this occurs as a mineral found in three distinct crystalline structures, ie. calcite, aragonite and vaterite, these are special phases relate to the arrangement of the atoms in the crystal structure. and these distinct phases influence the shape and symmetry of the crystals. industrial calcium carbonate is a semifunctional mineral filler including precipitated calcium carbonate (pcc) and ground calcium carbonate (gcc). pcc is obtained by a chemical reaction, while gcc is made by mills. the main advantage of pcc compared with gcc is resulting products can be controlled by certain parameters of the chemical reaction. guangxi huana products calcite or aragonite crystals pcc in different shapes: rhombohedral (quasi-cubic), ditrigonal scalenohedral, rose-like, prismatic, rod-like and rice-like. vaterite is not stable and over time will transform into the other two crystal. while gcc is calcite.
calcium carbonate has a wide variety of application such as rubber, plastics, sealant, construction, paper, paint and ink et al. guangxi huana specializes in the studying and manufacturing pcc and gcc with particle size ranging from 0.03 microns to 15.00 microns.
huana ccs is a series of precipitated calcium carbonate powders with hydrophobic surface coating. ccs was developed for filling silicone sealants (including one-component and bi-component sealants), polyurethane sealants, and ms sealants. ccs calcium carbonate was synthesized with regular rhombohedral crystal morphology and appropriate size. the calcium carbonate crystals were treated with stearic acid and others. the products are of low oil absorption, and they could rapidly and fully dispersed in sealant resin. the sealants filled with ccs products would exhibit excellent rheology, tensile strength, breaking elongation, elastic recovery, modulus, cohesion strength, water tolerance, and weather resistance.
| grades | crystal structure | particle shape | average particle size,nm | surface area,m2/g | brightness,% | moisture,% | ph value | oil absorption,ml/100g |
| ccs-18 | calcite | quasi-cubic | 100 | 16.0±0.5 | ≥95.5 | ≤0.40 | 8.5-9.5 | 32.0±1.0 |
| ccs-25 | calcite | rhombic | 80 | 20.0±0.5 | ≥95.0 | ≤0.50 | 8.5-9.5 | 30.0±1.0 |
| ccs-25i | calcite | rhombic | 70 | 25.0±1.0 | ≥95.0 | ≤0.50 | 8.5-9.0 | 28.0±0.5 |
| ccs-30 | calcite | rhombic | 60 | 30.0±1.0 | ≥94.0 | ≤0.60 | 8.5-9.5 | 28.0±1.0 |
| ccs-30c | calcite | rhombic | 70 | 25.0±1.0 | ≥91.0 | ≤0.60 | 8.5-9.2 | 26.0±0.5 |
| ccs-h | calcite | rhombic | 80 | 22.0±0.5 | ≥93.0 | ≤0.50 | 8.5-9.0 | 26.0±0.5 |
| ccs-w | calcite | rhombic | 80 | 20.0±0.5 | ≥95.0 | ≤0.50 | 8.8-9.5 | 30.0±1.0 |
| grades | extrudability | thixotropy | tensile strength | elongation at break | modulus | adhesion stress | water resistance | remarks |
| ccs-18 | ☆☆☆☆ | ☆☆ | ☆☆ | ☆☆ | ☆☆ | ☆☆☆☆ | ☆☆☆☆ | 无 |
| ccs-25 | ☆☆☆ | ☆☆☆ | ☆☆☆ | ☆☆☆ | ☆☆☆ | ☆☆☆ | ☆☆☆ | 无 |
| ccs-25i | ☆☆☆☆☆ | ☆☆☆☆ | ☆☆☆ | ☆☆☆☆ | ☆☆☆ | ☆☆☆ | ☆☆☆ | 适用于双组分胶 |
| ccs-30 | ☆☆☆ | ☆☆☆☆ | ☆☆☆☆ | ☆☆☆☆ | ☆☆☆☆ | ☆☆☆☆ | ☆☆☆☆ | 无 |
| ccs-30c | ☆☆☆ | ☆☆☆ | ☆☆☆☆☆ | ☆☆ | ☆☆☆☆☆ | ☆☆☆☆☆ | ☆☆☆☆☆ | 适用于结构胶 |
| ccs-h | ☆☆☆☆☆ | ☆☆☆☆☆ | ☆☆ | ☆☆☆☆☆ | ☆☆ | ☆☆ | ☆☆☆ | 适用于耐候胶 |
| ccs-w | ☆☆☆ | ☆☆☆ | ☆☆☆ | ☆☆☆ | ☆☆☆☆ | ☆☆☆☆ | ☆☆☆☆☆ | 适用于工业胶 |
data of specific surface area was tested by bet method.
oil absorption was obtained by dropping dop.
application performance of ccs was tested by gb 16776-2005 and gb 13477-2002.
according to iso3262 part 6, huana ccr and cc are ultra-fine pccs with uniform particles, excellent dispersion, and high brightness. their surfaces are organically treated by proprietary technologies. huana ccr and cc are functional fillers used in a variety of polymer materials. they provide great economic benefits in polymer production while greatly improving the hardness of the polymer, improving strength (tensile and impact) and enhancing the surface whiteness and gloss finish. ccr and cc would improve the processing properties of the polymer compound, especially for products which are based on rigid and plastic pvc. with outstanding ink-absorption and printability, ccr is widely used in the pvc calendered films in china.
| grades | crystal structure | particle shape | average particle size,nm | surface area,m2/g | brightness,% | moisture,% | ph value | surface treatment |
| ccr-1 | calcite | rhombic | 95.0 | 18.0±1.0 | ≥95.5 | ≤0.50 | 8.5-9.5 | stearic acid |
| ccr-2 | calcite | rhombic | 95.0 | 18.0±1.0 | ≥95.0 | ≤0.50 | 9.0-9.5 | proprietary |
| ccr-3 | calcite | rhombic | 105.0 | 16.0±1.0 | ≥95.0 | ≤0.40 | 8.5-9.5 | stearic acid |
| ccr-4 | calcite | rhombic | 105.0 | 16.0±1.0 | ≥95.0 | ≤0.40 | 8.5-9.5 | proprietary |
| ccr-5 | calcite | rhombic | 75.0 | 22.0±1.0 | ≥94.0 | ≤0.60 | 9.0-9.5 | stearic acid |
| ccr-6 | calcite | rhombic | 110.0 | 14.0±1.5 | ≥95.0 | ≤0.40 | 8.5-9.5 | stearic acid |
| cc-1 | calcite | rhombic | 80.0 | 23.0±1.0 | ≥95.0 | ≤0.50 | 8.5-9.5 | proprietary |
| cc-2 | calcite | prismatic | 105.0 | 16.0±1.0 | ≥95.0 | ≤0.40 | 8.5-9.5 | stearic acid |
| cc-3 | calcite | prismatic | 110.0 | 14.0±1.5 | ≥95.0 | ≤0.40 | 8.5-9.5 | stearic acid |
| grades | pvc rolling film | pvc wire/cable | rigid pvc | engineering plastic | rubber | tpe thermoplastic elastomer |
| ccr-1 | ▲ | ▲ | △ | △ | ▲ | ▲ |
| ccr-2 | ▲ | △ | △ | △ | △ | |
| ccr-3 | △ | ▲ | ▲ | ▲ | ||
| ccr-4 | ▲ | △ | △ | △ | ||
| ccr-5 | △ | ▲ | ▲ | △ | ▲ | |
| ccr-6 | ||||||
| cc-1 | △ | ▲ | △ | △ | ▲ | ▲ |
| cc-2 | △ | △ | ▲ | ▲ | △ | |
| cc-3 | △ | ▲ | ▲ | ▲ | ▲ |
▲= recommended △= can also be used
huana pcc is a micro-scale precipitated calcium carbonate according to norm iso 3262 part 6. it is a white and odorless powder prepared by calcium carbonate precipitation, dehydration, drying and crushing. it could be in the form of slurry. huana micro-scale pcc exhibits specific topography, high whiteness, purity, and dispersity. high retention, brightness, opacity, strength, and bulk et al. could be obtained when paper was filled or coated with huana micro-scale pcc. huana micro grade pcc is most commonly used in paint, rubber, and plastics et al. as an extender for titanium dioxide. it can provide functionalities, increasing the performance of the resin, adding thickening, unsinkability, impact strength, flexural modulus (stiffness), dimensional stability, and surface finish. this minerals is also used as cost-reducing fillers by extending or replacing the more expensive resins.
| grades | crystal structure | particle shape | average particle size,nm | surface area,m2/g | brightness,% | moisture,% | ph value | settling volume,ml/g | surface treatment? |
| mp-1 | calcite | scalenohedral | 3.0 | 7.0±0.5 | ≥95.5 | ≤0.50 | 8.5-9.5 | 2.8±0.2 | y/n |
| mp-3 | calcite | scalenohedral | 3.5 | 5.0±0.3 | ≥95.0 | ≤0.50 | 8.5-9.5 | 2.3±0.2 | n |
| mp-5 | calcite | scalenohedral | 4.0 | 4.0±0.3 | ≥95.0 | ≤0.50 | 8.5-9.5 | 1.8±0.2 | n |
| mp-ro | aragonite | rod-like | 2.0 | 8.0±0.5 | ≥95.0 | ≤0.50 | 8.5-9.5 | 3.2±0.2 | n |
| mp-ri | calcite | rice-like | 0.7 | 10.0±0.5 | ≥95.0 | ≤0.50 | 8.5-9.5 | 3.8±0.2 | y |
| mp-rh | calcite | rhombohedral | 0.5 | 12.0±0.5 | ≥95.0 | ≤0.50 | 8.5-9.5 | 4.0±0.3 | y |
| mp-cr | calcite | clustered-rose | 3.0 | 7.0±0.5 | ≥95.0 | ≤0.50 | 8.5-9.5 | 2.6±0.2 | |
| mp-cs | calcite | clustered-rose | 3.0 | 6.5±0.3 | ≥95.0 | ≤0.40 | 8.5-9.5 | 2.8±0.2 | y |
| mp-sc | calcite | scalenohedral | 3.5 | 7.5±0.5 | ≥95.0 | ≤0.50 | 8.8-9.5 | 3.0±0.3 | n |
| grades | papermaking | coating material | plastic | rubber |
| mp-1 | △ | ▲ | ▲ | ▲ |
| mp-3 | △ | ▲ | ▲ | ▲ |
| mp-5 | △ | ▲ | ▲ | ▲ |
| mp-ro | ▲ | ▲ | △ | ▲ |
| mp-ri | △ | ▲ | △ | |
| mp-rh | ▲ | ▲ | ▲ | |
| mp-cr | ▲ | △ | ▲ | ▲ |
| mp-cs | △ | △ | ▲ | ▲ |
| mp-sc | ▲ | ▲ | △ | △ |
▲= recommended △= can also be used
huana gcc is a series of ground calcium carbonate powders. based on the high-quality natural calcite and advanced crushing and grinding technology, huana gcc exhibits superior whiteness, low impurity, narrow size distribution and low oil absorption. gcc is seen to be irregular in shape, but it is in fact available with rhombohedral or prismatic particles. for various applications, different surface treatment technologies are employed for huana gcc series. in rubber, plastics, and paint, huana gcc is largely filled to replace polymer resin and reduce cost. and reinforcement and toughness could be realized while finer huana gcc is employed. much pulp would be saved when huana gcc is applied in filling and coating paper. and high retention, brightness, opacity and strength could be obtained at the same time.
| grades | crystal structure | particle shape | d97,μm | d50, μm | brightness,% | moisture,% | ph value | oil absorption,ml/100g | surface treatment？ |
| 600-m | calcite | irregular | ≤22.5 | ≤5.5 | ≥96.0 | ≤0.3 | 8.0-9.0 | 15~18 | y/n |
| 800-m | calcite | irregular | ≤15.0 | ≤3.5 | ≥96.0 | ≤0.3 | 8.0-9.0 | 17~20 | y/n |
| 1250-m | calcite | irregular | ≤10.0 | ≤2.5 | ≥96.0 | ≤0.3 | 8.0-9.0 | 20~23 | y/n |
| 1500-m | calcite | irregular | ≤8.0 | ≤2.3 | ≥96.0 | ≤0.3 | 8.0-9.0 | 21~24 | y/n |
| 2000-m | calcite | irregular | ≤6.5 | ≤2.0 | ≥96.0 | ≤0.4 | 8.0-9.0 | 23~26 | y/n |
| 2500-m | calcite | irregular | ≤5.0 | ≤1.6 | ≥96.0 | ≤0.4 | 8.0-9.0 | 25~28 | y/n |
| 3000-m | calcite | irregular | ≤4.5 | ≤1.4 | ≥96.0 | ≤0.5 | 8.0-9.0 | 30~33 | y/n |
| g-120 | calcite | irregular | ≤18 | ≤3.5 | ≥96.0 | ≤0.3 | 7.5-8.5 | 24~34 | y/n |
| grades | papermaking | coating material | plastic | rubber |
| 600-m | △ | △ | ▲ | ▲ |
| 800-m | ▲ | △ | ▲ | ▲ |
| 1250-m | ▲ | ▲ | ▲ | ▲ |
| 1500-m | ▲ | ▲ | ▲ | ▲ |
| 2000-m | ▲ | ▲ | ▲ | ▲ |
| 2500-m | ▲ | ▲ | ▲ | ▲ |
| 3000-m | ▲ | ▲ | △ | |
| g-120 | △ | ▲ | ▲ |
▲= recommended △= can also be used
oil absorption was obtained by dropping dop.
application performance of ccs was tested by hg/t3249.1~3249.4-2008