Modern, powder technology is one of the most compelling technologies. Powders are involved in many industries and fields. Powder technology is one of the basic technologies supporting high-efficiency technology. The so-called powder technology includes two aspects, one is powder particle design and manufacturing technology, and the other is powder processing technology, that is, how to add powder to other substances to play its unique role. In addition to doing some work on the design and manufacture of powder particles, the company's research institute has done a lot of work on powder activation treatment and manufacturing of super-modified powder masterbatch, and has made some progress. The manufacture of super-modified split masterbatch is a necessary process for the powder to be added to other substances, otherwise it will not be added. The super-modified powder masterbatch is added to the plastic, which can significantly improve the rigidity and creep resistance of the plastic, hardness and surface scratch resistance, heat resistance and hot edge temperature, and the modified powder masterbatch is also Can improve the impact strength of plastic food companies. And after adding, it also has a lubricating effect, which can promote the flow and improve the processing technology of the plastic. Costume Jewelry,Costume Jewelry Sets,Fashion Costume Jewelry,Custom Costume Jewelry Guangzhou Sanko Button Co Ltd , https://www.skbutton.com
First, the application in polypropylene resin:
Super-modified powder masterbatches are commonly used to fill polypropylene. The modified powder masterbatch has the characteristics of a sheet-like structure with a thin sheet. Therefore, the finely divided modified powder masterbatch can be used as a supplementary filler for polypropylene. In the modified system of polypropylene, the addition of modified powder masterbatch can not only significantly improve the rigidity, surface hardness, heat resistance, electrical insulation, dimensional stability of polypropylene products, but also increase the impact of polypropylene. strength. Adding a small amount of modified powder masterbatch to polypropylene can also act as a nucleating agent, improve the crystallinity of polypropylene, thereby improving the mechanical properties of polypropylene, and improving crystallinity and refining crystals. It can also improve the transparency of polypropylene.
Polypropylene composites filled with 20% and 40% ultrafine modified powder masterbatch can significantly improve the rigidity of polypropylene and the creep resistance at high temperatures, both at room temperature and high temperature. For example, the polypropylene flexural modulus of adding 40% modified split masterbatch can be increased from 16100kg/cm2 to 42000kg/cm2, and the heat distortion temperature is increased from 62°C (1.82Mpa force) to 88°C or from 121°C. (0.45Mpa force is increased to 147°C. For electrical components, the dielectric constant is increased from 1.9 to 2.4, and the arc resistance is extended from immediately melting to 140 seconds. Therefore, in the automotive industry, polypropylene is modified. Powder masterbatch composite material is used for fan cover, heating cover, duct, battery heat shield, fluid pump parts, etc. In the aircraft industry, for refrigerator door mats, heaters and vacuum pump covers, washing machine mixers In the electrical industry, it is used for injection molding into various instrument housings and electrical components.
Second, the application in polyethylene resin:
The modified powder masterbatch has certain water resistance and high chemical inertness, so it has good chemical resistance and fluidity. It can compete with ABS, nylon and polycarbonate. Filling it with polyethylene can improve the following. Performance: Improve toughness, disturbing modulus and twisting mode; improve the bending strength; reduce the creep tendency at normal temperature and high temperature; increase the thermal transition temperature and dimensional stability; improve deformation and warpage, and also have lower Thermal expansion coefficient; improved thermal conductivity; improved surface hardness and brightness of molded parts; improved mechanical strength of polyethylene.
For example, the modified powder masterbatch is filled with injection-grade high-density polyethylene composite material. In addition to the above-mentioned performance, the tensile strength of the composite material increases, and the maximum value is increased when 10% is added, and 30% can still be added. The original strength is maintained and the impact strength is slightly increased.
For polyethylene blown film, it is made by special method, and it has good dispersibility and uniformity added to plastic. 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. Can't change. Therefore, it is used to injection molding various low-grade watches, televisions, tape recorders, mobile phones and other housings, of course, in other fields such as: textile equipment, electrical parts, automotive parts, aircraft parts, etc. are also widely used. However, people do not meet the existing performance of ABS, and extensive research on ABS modification has not been published. For example, the automotive sample blister sheet made by blending ABS and PVC, the imitation leather case quilt made by blending ABS and PVC, not only has high strength, high toughness and can maintain the durability of the surface pattern. It can significantly improve the notched impact strength and tear strength of the blended material.
Since ABS is an amorphous polymer, it has a function of accommodating more filler. The addition of the modified powder masterbatch can significantly improve the original performance of the ABS and reduce the cost.
Third, the application in polystyrene resin:
Unmodified general-purpose polystyrene is a non-topped polymer which is hard and brittle, but it has good electrical properties, aging resistance and high dimensional stability. The disadvantage is high brittleness and sensitivity to environmental cracking. Adding modified powder masterbatch can improve impact toughness, adjust rheology, significantly improve the modulus of flexion, and improve tensile yield strength. For example, adding 40% modified powder masterbatch, the modulus of distortion is from 23800kg/cm2. Increased by 58800kg/cm2, the expansion degree increased from 336kg/cm2 to 385kg/cm2
Fourth, the application of polystyrene to nylon (polyamide) in nylon resin, the industry pays special attention to the toughness and wear resistance of this plastic. Nylon is generally hard, similar to keratin, with good abrasion resistance and high dimensional stability. These can be further improved by fillers or reinforcing agents. The hardness, stiffness, wear resistance and heat distortion temperature of nylon 66 are the highest in nylon; nylon 6 is known for its high toughness; nylon 610 has low water absorption and dimensional stability, and nylon 11 impact strength is The highest in nylon.
Among the various fillers, the solid structure of talc powder can improve the original good performance of nylon, and the improvement of wear resistance is the most important.