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Calcium carbonate is widely used in the production of color masterbatch, which can reduce costs and improve the performance of color masterbatches. This article lists some of the effects of calcium carbonate on the final plastic product
1. Effect on tensile and impact properties
Not all calcium carbonate can improve the tensile strength and impact strength of plastic film, which in turn is affected by the particle size of calcium carbonate and the effect of surface treatment.
Effect of particle size: The particle size of calcium carbonate is different, and the modification effect on plastic is different, as shown in the following table. Generally, the particle size is below 1000 mesh, which is mainly used for incremental modification; the particle size is 1000~3000 mesh, and the addition amount is below 10%, which has a certain modification effect; the particle size is above 5000 mesh, which belongs to functional calcium carbonate, with The obvious modification effect can improve the tensile strength and impact strength. Although nano-scale calcium carbonate has a finer particle size, it can only achieve the same modification effect as 8000 mesh calcium carbonate because it is difficult to disperse at present.
2. Anti-blocking effect
The blown tubular film containing calcium carbonate has good opening and will not stick when it is curled, and calcium carbonate acts as an opening agent.
3. Improve liquidity
Calcium carbonate can improve the fluidity of the composite system, reduce melt viscosity and extruder torque, increase extruder output, and improve production efficiency. Different varieties of calcium carbonate have different effects on flow.
4. White performance
Calcium carbonate with high whiteness can replace some white pigments such as titanium dioxide, thereby saving the content of high-priced titanium dioxide. Large calcite calcium carbonate is the first choice because of its high whiteness and high hiding power. The reason why calcium carbonate can become a white pigment is mainly because it has a certain hiding power.
5. Enhance product degradation performance
After the polyethylene plastic bag containing calcium carbonate is buried in the ground, the calcium carbonate may react with carbon dioxide and water to form Ca(HCO3)2 that can dissolve in water and leave the film, leaving fine holes on the film, increasing the density of the plastic film. The area where the surrounding air and microorganisms come into contact, thereby promoting the degradation of the product.
6. Increase breathability
The plastic film filled with calcium carbonate will produce tiny pores in the film when stretched, which can only pass through water vapor but not liquid water, so it can be used to produce breathable plastic products. For example, a typical breathable film uses a large amount of calcium carbonate. Made of padding and film stretching. Generally, only 3000 mesh calcium carbonate can be selected for the production of calcium carbonate for breathable film, and the particle size distribution should be absolutely narrow.
OUR MASTERBATCH RANGE (Click to Know More details)
* Color masterbatch
* Black masterbatch
* White masterbatch
* Additive masterbatch
* Filler masterbatch
1. Effect on tensile and impact properties
Not all calcium carbonate can improve the tensile strength and impact strength of plastic film, which in turn is affected by the particle size of calcium carbonate and the effect of surface treatment.
Effect of particle size: The particle size of calcium carbonate is different, and the modification effect on plastic is different, as shown in the following table. Generally, the particle size is below 1000 mesh, which is mainly used for incremental modification; the particle size is 1000~3000 mesh, and the addition amount is below 10%, which has a certain modification effect; the particle size is above 5000 mesh, which belongs to functional calcium carbonate, with The obvious modification effect can improve the tensile strength and impact strength. Although nano-scale calcium carbonate has a finer particle size, it can only achieve the same modification effect as 8000 mesh calcium carbonate because it is difficult to disperse at present.
2. Anti-blocking effect
The blown tubular film containing calcium carbonate has good opening and will not stick when it is curled, and calcium carbonate acts as an opening agent.
3. Improve liquidity
Calcium carbonate can improve the fluidity of the composite system, reduce melt viscosity and extruder torque, increase extruder output, and improve production efficiency. Different varieties of calcium carbonate have different effects on flow.
4. White performance
Calcium carbonate with high whiteness can replace some white pigments such as titanium dioxide, thereby saving the content of high-priced titanium dioxide. Large calcite calcium carbonate is the first choice because of its high whiteness and high hiding power. The reason why calcium carbonate can become a white pigment is mainly because it has a certain hiding power.
5. Enhance product degradation performance
After the polyethylene plastic bag containing calcium carbonate is buried in the ground, the calcium carbonate may react with carbon dioxide and water to form Ca(HCO3)2 that can dissolve in water and leave the film, leaving fine holes on the film, increasing the density of the plastic film. The area where the surrounding air and microorganisms come into contact, thereby promoting the degradation of the product.
6. Increase breathability
The plastic film filled with calcium carbonate will produce tiny pores in the film when stretched, which can only pass through water vapor but not liquid water, so it can be used to produce breathable plastic products. For example, a typical breathable film uses a large amount of calcium carbonate. Made of padding and film stretching. Generally, only 3000 mesh calcium carbonate can be selected for the production of calcium carbonate for breathable film, and the particle size distribution should be absolutely narrow.
OUR MASTERBATCH RANGE (Click to Know More details)
* Color masterbatch
* Black masterbatch
* White masterbatch
* Additive masterbatch
* Filler masterbatch
