Modification explore the advantages of domestic talc

Talc is a hydrated layered silicate mineral,talc,very good chemical stability, resistance to acid and alkali,and also has good electrical insulating properties and heat resistance.Talc functions as an excellent raw materials and fillers,in ceramics, paint,paper,textile,rubber and plastics industries widely used.

Talc as fillers polymer materials,products can improve the rigidity,dimensional stability,lubricity,to prevent high temperature creep and reduce the wear on the molding machine,by filling in the polymer can improve the hardness and creep resistance at the same time,also the heat resistance of the polymer to improve the impact strength can be improved plastic molding shrinkage,modulus of elasticity in bending of products,and tensile yield strength.

With the development of modern industry,for talc purity,whiteness and fineness of the increasingly high demand,especially ultrafine talc,in great demand in the domestic market.However,talcum powder as an inorganic filler and an organic polymer molecules between the materials in the chemical structure and physical morphology have great differences,the lack of affinity between the polymer blend of talc and uneven adhesion weak,leading to decrease of mechanical properties.

To do this,you must talc surface modification to improve the interface with the polymer affinity talc,talc fillers to improve the dispersion state of the polymer binder, so that talc filler in the composite material not only has the incremental effect,but also serve to strengthen the effect of modification to improve the physical and mechanical properties of composite materials,so that the application of talc to get better and expand its field of application.

By Betty