Source Lei tell you | Why do you want to add precipitated barium sulfate in plastic modification? This is the reason!

Release time:

2024-01-29 09:36


Source Lei tell you | Why do you want to add precipitated barium sulfate in plastic modification? This is the reason!


General plastics generally refer to plastics with large output, wide use, good formability and low price, such as polyethylene, polypropylene, phenolic and so on.Many products used in people's daily life are made of these common plastics.


General plastic has the advantages of good formability and low price, but its disadvantages such as easy aging, easy deformation and so on bring a lot of inconvenience to the use.In order to overcome these disadvantages, it can be improved by modification and addition of precipitated barium sulfate to meet its needs in practical applications.


Precipitated barium sulfate has a wide range of applications due to its unique and excellent performance, and has become one of the new functional modification materials for plastic products.Precipitated barium sulfate has the characteristics of improving the chemical resistance and heat resistance of plastic products and improving the appearance of products.


So in addition to these characteristics, precipitated barium sulfate in the plastic modification process specifically played what role?




Improves the rigidity of the plastic.Generally, the rigidity of plastics is poor, such as the tortuous modulus of pure PP is about 1000MPa, which is far from satisfactory for the application requirements of some components and increases.30%After talcum powder, its tortuous modulus can reach more than 2000MPa, it can be seen that talcum powder has a significant stiffening effect.



Improved plastic appearance hardness.Usually plastic hardness is low, the appearance is easy to scratch, affect the appearance, and then affect its appearance and decorative. The hardness of the inorganic filler is higher than that of the plastic. After increasing the inorganic filler, the appearance hardness of the plastic can be greatly improved.



Advancements in the dimensional stability of plastic products and components.Some plastic crystallization is greatly shortened, resulting in a large shortening rate of its products, which is easy to deform and unstable in scale after coming out of the mold. After increasing the filler, the shortening rate of the plastic can be greatly reduced, and then the scale stability of the plastic products and components can be improved.



Improve the molding processability of plastics.Some fillers can improve the processability of plastics, such as barium sulfate, glass beads, etc., can improve the fluidity of the resin, and then can improve its processability.




Intensity of progress.The tensile strength of the general plastic itself is not high, the increase of inorganic filler, in the appropriate range of filling, can improve the tensile strength and bending strength of plastic, and then improve the engineering application of plastic.



Give certain functions to plastics and advance the added value of plastics.Some fillers can endow plastics with some functions. For example, after talc powder and calcium carbonate are added to PP, the antistatic function and printing function of PP can be improved. Hollow glass beads can improve the thermal insulation function of plastics after being added to plastic guess. Metal particles can improve the thermal conductivity and electrical conductivity of plastics after being added to plastic guess.


precipitated barium sulfateIt is a white amorphous powder with a relative density of 4.50(15 ℃) and a melting point of 1 580 ℃. Due to the high refractive index (1.63~1.65), the color is white and has a certain hiding power. It is almost insoluble in water, ethanol and acid, soluble in hot sulfuric acid. It can be reduced to barium sulfide with carbon at high temperature. It is an important basic chemical raw material,Main uses: used as paint, paint, ink, plastic, rubber and battery raw materials or fillers.



Precipitated barium sulfate unique excellent performance, so that its application is very wide, in the plastics industry has made remarkable achievements, become one of the important functional materials indispensable in the plastics industry.China is rich in barium sulfate resources, it is necessary to speed up the upgrading of products, improve the grade, and effectively promote its healthy development in the plastics industry.






Modified, plastic, progress, barium sulfate, precipitation, capable, function, filler, improvement, hardness

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