Powder is involved in many industries and fields. It can be said that powder technology is one of the basic technologies supporting high and new technology. The so-called powder technology includes two aspects, one is the design and manufacturing technology of powder particles, and the other is the powder processing technology, that is, how to add powder to other substances to play its unique role. The addition of ultra-fine talc masterbatch to plastics can significantly improve the rigidity and creep resistance, hardness and surface scratch resistance, heat resistance and heat distortion temperature of plastic products. Improve the impact strength of plastic products. And after adding, it also has lubricating effect, can play a role in promoting flow, and improve the processing technology of plastics.
1. Application in polypropylene resin:
Talc is often used to fill polypropylene. Talc has a flake-like structure characteristic of flake configuration. Therefore, talc with finer particle size can be used as a reinforcing filler for polypropylene. In the modification system of polypropylene, adding superfine talc masterbatch can not only significantly improve the rigidity, surface hardness, thermal creep resistance, electrical insulation and dimensional stability of polypropylene products, but also improve polypropylene products. impact strength. Adding a small amount of talc powder to polypropylene can also act as a nucleating agent to improve the crystallinity of polypropylene, thereby improving the mechanical properties of polypropylene. Transparency of polypropylene.

2. Application in polyethylene resin:
Talc is a natural magnesium silicate with four particle types: fibrous, lamellar, acicular and standard (frozen stone). But only laminar is used in industry. The layered sandwich structure of talc, each layer has a certain water resistance and a high degree of chemical inertness, so it has good chemical resistance and sliding properties. Filling polyethylene with it can be used as engineering plastics, has good chemical resistance and fluidity, and can compete with ABS, nylon and polycarbonate. Filling polyethylene with it can improve the following properties: increase toughness, flexural modulus and twisting modulus; increase flexural strength; reduce creep tendency at room temperature and high temperature; increase thermal change temperature and dimensional stability; improve deformation and warpage, and also have a lower coefficient of thermal expansion; improve thermal conductivity; improve the surface hardness and smoothness of molded parts; improve the mechanical strength of polyethylene.
3. Application in ABS resin:
The superfine talc masterbatch produced by special method has good dispersion and uniformity when added to plastics.
ABS resin is an amorphous polymer with excellent molding processability like polystyrene; it has good impact strength, good low temperature resistance, high tensile strength, good creep resistance, and can withstand 7Mpa load without dimensional change Therefore, it is often used to injection mold the shells of various instruments, TV sets, tape recorders, mobile phones, etc. Of course, it is also widely used in other fields such as textile equipment, electrical parts, auto parts, and aircraft parts. However, people are not satisfied with the existing performance of ABS, and the research on ABS modification has been carried out extensively, and the relevant information published is not small.
4. Application in polystyrene resin:
Unmodified general-purpose polystyrene is an amorphous polymer, which is hard and brittle, but it has good electrical properties, aging resistance and high dimensional stability. The disadvantage is that it is highly brittle and sensitive to environmental stress cracking. The addition of superfine talc masterbatch can improve the impact toughness, adjust the rheology, significantly improve the flexural modulus, and also improve the tensile yield strength.

5. Application in nylon resin:
For nylon (polyamide), the industry pays special attention to the toughness and wear resistance of this plastic. Nylon is generally hard, horny-like, with good abrasion resistance and high dimensional stability. These properties can be further enhanced by fillers or reinforcing agents. The hardness, stiffness, wear resistance and heat distortion temperature of PP66 are the highest in nylon; PP6 is known for its higher toughness; PP610 has lower water absorption and thus higher dimensional stability; PP11 has the highest impact strength in nylon. the highest. Among various fillers, talc with layered structure can improve the original good properties of nylon, and it is most important to improve wear resistance. Compared with metal, unfilled modified nylon has low elastic modulus, low tensile and creep strength, and mechanical properties are significantly dependent on temperature. The molecule contains water-absorbing gene amine group, which has high water absorption rate, and the product is easy to absorb water during use. Expansion deformation, rapid cooling and incomplete crystallization during processing and molding, and still crystallization during use, which leads to deformation of the product and even cracking. The above shortcomings of nylon can be greatly improved by adding ultra-fine talc masterbatch. Talc powder has the function of nucleating agent, which can increase the crystallization rate of nylon and increase the degree of crystallinity after adding; therefore, it can especially improve the toughness of nylon. , mechanical strength, hardness, thermal stability, dimensional stability, improve product surface quality and deformation behavior, also have a good impact on moisture absorption, electrical properties and chemical properties.??
6. Application in other resins:
1. In fluoropolymers such as polytetrafluoroethylene, the addition of fillers or reinforcing agents can improve creep strength, wear resistance, toughness, thermal conductivity, compressive strength, hardness, creep tendency and thermal resistance at high temperatures. deformability.
2. Adding fillers to polyoxymethylene can further improve its own toughness.
3. Adding superfine talc masterbatch to polycarbonate can improve toughness.
4. Adding ultra-fine talc masterbatch to polyphenylene sulfide can obtain better processability, lower shrinkage, accurate mold release size and improved surface gloss.