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| Place of Origin: | CHINA |
| Brand Name: | CHANGHONG |
| Certification: | TDS,MSDS |
| Model Number: | TSG |
| Minimum Order Quantity: | 1ton |
|---|---|
| Price: | 1 usd per ton |
| Packaging Details: | in 25kg bag |
| Payment Terms: | T/T, L/C |
| Name: | Calcium Carbonate Powder Filler For Plastic Bags | Color: | White Filler For Plastic Bags |
|---|---|---|---|
| Packing: | 25 Kgs Bag Filler For Plastic Bags | Location: | Hezhou, Guangxi |
83% caco3 filler for plastic bags,caco3 heavy white powder calcium carbonate low price
Calcium carbonate is widely used in filling resins such as polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), and acrylonitrile butadiene styrene copolymer (ABS). Adding calcium carbonate has a certain effect on improving certain properties of plastic products and expanding their application range. In plastic processing, they can reduce resin shrinkage, improve flow distortion, and control viscosity. It can also play the following roles:
1. Improving the stability of plastic product dimensions
The addition of calcium carbonate plays a skeletal role in plastic products and plays a significant role in stabilizing the size of plastic products.
2. Improving the hardness and rigidity of plastic products
In plastics, especially soft polyvinyl chloride, the hardness gradually increases with the addition of calcium carbonate, while the elongation decreases with the increase of hardness. Calcium carbonate with fine particles and high oil absorption value has a high rate of hardness growth. On the contrary, calcium carbonate with small particle crude oil absorption value has a smaller hardness growth rate of plastic. In soft polyvinyl chloride, the hardness growth rate of heavy calcium carbonate is the smallest, followed by precipitated calcium carbonate (light).
Calcium carbonate plastics (resins) generally do not have a reinforcing effect, and calcium carbonate particles can often be soaked in the resin. Therefore, the normal effect of adding calcium carbonate is to increase the rigidity of the resin, as well as the elastic modulus and hardness. As the addition amount increases, the tensile strength and ultimate elongation decrease. The hardness varies depending on the amount of calcium carbonate added.
3. Improving plastic processing performance
The addition of calcium carbonate can change the rheological properties of plastics. Calcium carbonate powder is often added in large quantities, which facilitates its mixing with other components and also facilitates the processing and shaping of plastics. The addition of calcium carbonate, especially after surface treatment, can not only improve the hardness of the product, but also improve its surface gloss and smoothness. The addition of calcium carbonate can reduce the shrinkage rate, linear expansion coefficient, and creep performance of plastic products, creating conditions for processing and forming.
4. Improving the heat resistance of plastic products
Adding calcium carbonate to general plastic products can improve their heat resistance. For example, in polypropylene, adding about 40% calcium carbonate can increase the heat resistance by about 200C. When the filling ratio is ≤ 20%, the heat resistance temperature increases by 8-130C.
5. Improving the astigmatism of plastics
In plastic products, some products require whitening and opacity, while others prefer extinction. The addition of calcium carbonate can play a certain role in this regard. Calcium carbonate with a whiteness of over 90 has a significant whitening effect in plastic products. In combination with titanium dioxide and lithopone, the extinction performance of plastic products has been greatly improved. In calcium plastic paper, in low-density polyethylene (LDPE) and high-density polyethylene (HDPE) films
Adding calcium carbonate can achieve both astigmatic and extinction effects, making it suitable for writing and printing. Calcium carbonate with good whiteness can also replace expensive white pigments.
6. It can endow the product with certain special properties.
Adding calcium carbonate to cable materials has a certain insulation effect, and the addition of calcium carbonate can improve the electroplating and printing properties of certain products.
Adding fine or ultrafine calcium carbonate to polyvinyl chloride (PVC) has a certain flame retardant effect.
7. Reduce the cost of plastic products
The price of ordinary lightweight calcium carbonate and heavy calcium carbonate is far lower than that of plastic, and the addition of calcium carbonate will reduce the cost of plastic products. Guwai refers to calcium carbonate as a filler or extender. At present, adding calcium carbonate to reduce the cost of plastics is the main goal. With the improvement of surface properties and controllable shape and particle size of calcium carbonate, it will gradually become a functional filler for strengthening or imparting functionality.
Calcium carbonate is the most commonly used filler in the production and processing of PVC products, and its use is mostly aimed at increasing PVC products and reducing production costs. At present, there are two main types of calcium carbonate used in the production and processing of PVC products. One is that natural limestone is mechanically crushed into calcium carbonate of different fineness through Raymond grinding. This type of calcium carbonate is called heavy calcium carbonate, and its quality is determined by the grade and fineness of natural limestone. Reasonable use of heavy calcium carbonate can improve the heat resistance, rigidity, dimensional stability, and processability of PVC products. The second step is to select high-grade limestone and calcine it to decompose into calcium oxide, which is then reacted with water to form calcium hydroxide. Carbon dioxide is then introduced and precipitated to form calcium carbonate, which is called lightweight calcium carbonate. A small amount of lightweight calcium carbonate can improve PVC.
The tensile strength of the product. The quality of lightweight calcium carbonate is not only determined by the grade of natural calcium carbonate, but also by the chemical reaction conditions such as calcination and grading fineness. The price of lightweight calcium carbonate should be more than twice that of heavy calcium carbonate of the same fineness. In the processing of PVC products, adding a large amount of calcium carbonate can reduce product quality, but if inferior calcium carbonate is added, the product quality will significantly decrease. Adding the same amount of calcium carbonate, high-quality calcium carbonate and low-quality calcium carbonate will make the performance of PVC products completely different. Usually, some manufacturers or distributors mix light calcium carbonate with heavy calcium carbonate and sell it at the price of light calcium carbonate, which can occur in various fineness of light calcium carbonate. In addition, some small factories do not have strict requirements for raw material sources and production processes, resulting in poor quality. Usually, the price of poor quality calcium carbonate is lower, and some manufacturers may purchase such calcium carbonate in order to achieve lower production costs. However, this often backfires because the amount of calcium carbonate added is relatively lower than that of high-quality calcium carbonate, otherwise it will greatly reduce product quality.
size: 250-300mesh 800mesh 1250mesh
hardness:3
shape:grain powder
color:white and black
Used in rubber plastic cable paint
CaCO3 powder / calcium carbonate (F,M,C)
1. Advantages
1)Acid-soluble, high-purity product which minimizes formation damage.
2) High hardness, Calcium Carbonate resists particle-size degradation.
3) Essential inert, minimum effect on fluid properties.
4) It is preferred over limestone because it is generally more pure with a higher hardness and it provides better acid solubility.
2. Application
Calcium Carbonate is an acid soluble additive used for bridging and weighting agent for a controlling fluid loss and density. As a bridging agent and fluid loss-additive, normal concentrations are in the 10 to 50lb/bbl range (29 to 143 kg/m3).
Calcium Carbonate can also be added on a periodic basis for seepage control to limit losses (lost circulation and leak-off) to high permeability formations.It is particularly effective when drilling with high differential pressures caused by an overbalanced condition or when drilling depleted zones. Treatments range from 2 to 10 sacks per hour when used a preventative measure.
For depleted zone drilling or induced fracture applications, Calcium Carbonate is most effective when used in combination with Graphite additive.
3. Specification
Quick Details
- Used as filler for paint, it can whiten, increase in capacity for products and improve gloss for paint, save cost for manufacturer.
- Used in other paint, paper-making, and rubber etc field, it can improve whiteness, opacity, and smooth for paper.
- Used in industries such as rubber, plastics, paper making, paint, building etc.
Product Features
calcium carbonate have table chemical properties, no changes when exposed in the air, almost insoluble in water.compact crystal structure, Low impurity content, smooth surface, even granularity, good processibility and low oil absorption value.
Product Uses
Calcium carbonate is widely used in paper-making,composite materials, plastic pipes, section material, plastic works and cables, coating,oily paintings, powder coatings, medical,food,waterborne coatings.
1.In paper-making industry
improve the surface luster, whiteness and paper's smoothness.
2.In plastic industry
greatly increase the bonding strength and mechanical properties of the surface of composite materials, can plasticize the materials and can improve the luster and quality.
3.In rubber industry
increase products'streching, heat-resistant and anti-aging properties.
4.In coating industry
increase the thickness of the coating film, and improve the resistance to wear and weathering resistance as well as the painting area.And it contains no heavy metal and it the best choice of the filler for powder coating without heavy metal.
bonding strength and mechanical properties of the surface of composite materials, can plasticize the materials and can improve the luster and quality.
Calcium carbonate is an inorganic compound with the chemical formula CaCO 3, and is the main component of limestone, marble, and other materials. Calcium carbonate is usually a white crystal, odorless, insoluble in water, and easily reacts with acids to release carbon dioxide. It is one of the common substances on Earth, found in rocks such as aragonite, calcite, chalk, limestone, marble, and limestone. It is also the main component of certain animal bones or shells. Calcium carbonate is also an important building material with a wide range of industrial applications.
Used in departments such as papermaking, metallurgy, glass, alkali production, rubber, pharmaceuticals, pigments, organic chemicals, etc
physical property
Calcium carbonate is a white fine crystalline powder, odorless and odorless. There are two forms: amorphous and crystalline. In the crystal form, it can also be divided into rhombic and hexagonal crystal systems (anhydrous calcium carbonate is a colorless rhombic crystal, and hexahydrate calcium carbonate is a colorless monoclinic crystal [4]), which are columnar or rhombic in shape, with a density of 2.93g/cm3. The melting point is 1339 ℃ (decomposed at 825-896.6 ℃), and the melting point is 1289 ℃ at 10.7 MPa. Almost insoluble in water, soluble in water containing ammonium salts or iron trioxide, insoluble in alcohols
classification
Broadcast
According to different production methods of calcium carbonate, it can be divided into heavy calcium carbonate, light calcium carbonate, colloidal calcium carbonate, and crystalline calcium carbonate. According to the average particle size (d) of calcium carbonate powder, it can be divided into particulate calcium carbonate (d>5 μ m) Micropowder calcium carbonate (1-5 μ m) Fine calcium carbonate (0.1-1 μ m) Ultrafine calcium carbonate (0.02-0.1 μ m) Ultra fine calcium carbonate (d ≤ 0.02 μ m) . According to the regularity of the arrangement of atoms and ions that make up calcium carbonate, it can be divided into crystalline calcium carbonate and amorphous calcium carbonate. In addition, there are nano calcium carbonate and others.
Heavy calcium carbonate
Heavy calcium carbonate (commonly known as heavy calcium carbonate) is produced by directly crushing natural calcite, limestone, chalk, shells, etc. using mechanical methods (such as Raymond mill or other high-pressure mills). [7]
Light calcium carbonate
Light calcium carbonate (commonly known as light calcium carbonate), also known as precipitated calcium carbonate, is obtained by calcining raw materials such as limestone to produce lime (mainly composed of calcium oxide) and carbon dioxide, then adding water to digest the lime to produce lime milk (mainly composed of calcium hydroxide), and then adding carbon dioxide to carbonize the lime milk to generate calcium carbonate precipitate. Finally, it is obtained through dehydration, drying, and crushing. Alternatively, sodium carbonate and calcium chloride can be used for double decomposition reaction to generate calcium carbonate precipitate, which is then dehydrated, dried, and crushed to obtain. [7]
activated calcium carbonate
Colloidal calcium carbonate, also known as activated calcium carbonate, modified calcium carbonate, surface treated calcium carbonate, colloidal calcium carbonate, or white brilliant, is prepared by surface modification of light or heavy calcium carbonate with surface modifiers. Due to the fact that calcium carbonate modified by surface modifiers generally has a reinforcing effect, known as "activity", it is customary to refer to modified calcium carbonate as active calcium carbonate.
Property: Colloidal calcium carbonate is an extremely fine white powder, odorless and tasteless, with particles resembling spheres and a particle size below 0.1um. Due to the adsorption of a layer of fat soap on the surface of the particles, it has colloidal activation performance and is an excellent white reinforcing filler. Soluble in water, decomposes when exposed to acid, turns into a burnt black color upon ignition, releases carbon dioxide, and generates calcium oxide. The specific gravity ranges from 1.99 to 2.01. [7]
Crystalline calcium carbonate
Calcium hydroxide reacts with hydrochloric acid to generate calcium chloride, which is decolorized and impurities removed by activated carbon. Calcium chloride is carbonated with carbon dioxide in the presence of ammonia to obtain calcium carbonate, which is then crystallized, separated, washed, dehydrated, dried, and screened.
Property: Pure white, hexagonal crystalline powder. Specific volume 1.2-1.4 milliliters per gram. Soluble in acids, almost insoluble in water. [7]
Usage: Used in toothpaste, medicine, and other fields, as well as as as insulation materials and the production of other chemical raw materials.
Industrial use
Calcium carbonate is a valuable resource with a wide range of uses. Limestone is a trade name used as a mineral raw material. Limestone has been widely used in the history of human civilization due to its wide distribution and easy accessibility in nature. As an important building material with a long history of mining, limestone is the main raw material for manufacturing cement, lime, and calcium carbide in modern industry. It is an indispensable flux limestone in the metallurgical industry. After ultrafine grinding, high-quality limestone is widely used in the manufacturing of products such as paper, rubber, paint, coatings, pharmaceuticals, cosmetics, feed, sealing, bonding, polishing, etc. According to incomplete statistics, the ratio of the total consumption of limestone and building stones, lime production, metallurgical flux, and ultrafine calcium carbonate in cement production is 1:3. Limestone is a non renewable resource. With the continuous progress of science and technology and the development of nanotechnology, the application fields of limestone will be further expanded. [9]
Guangxi Changhong Biological Material Co., Ltd. was established in January 2023 with 41 million USD registered capital. Guangxi Changhong has two marble mines, with more than 200 million tons reserves and 4 million tons/year raw ore supply capacity , plans to build 100 KT/year of high-end modified calcium carbonate production line, 600 KT/year shoe material masterbatch production line, 100 KT/year degradable products and agricultural mulch. After completion, the company will have four major products,such as calcium carbonate powder series, modified filler masterbatch series, bio eco-friendly degradable material series, large board, sheet and so on. Products are widely used in paper, plastic products, rubber, paint coatings, daily chemicals, wires and cables, paint chemicals, green building materials, ceramics, highway marking and other industries.
The construction of the project will help Keyuan group build upstream calcium carbonate masterbatch chain, realize the whole industry chain layout of the company from the BDO, PBAT products, PBAT, PBAT modified to biodegradable products, speed up the frequency of subsequent biodegradable plastic production line, continuously strengthen the upstream raw material advantages, and form the integration of upstream and downstream industry synergy.
Contact Person: Mrs. Kim Xie
Tel: +8613975090964
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