In modern times, powder technology is one of the most compelling technologies. Powders are involved in many industries and fields. It can be said that powder technology is one of the basic technologies supporting efficient technologies. The so-called powder technology includes two aspects, one is the powder particle design and manufacturing technology, the second is the powder processing technology, that is how to add powder to other substances, to play its unique role. In addition to some work on the design and manufacture of powder particles, our company's research institute has done a lot of work on powder activation and manufacturing super modified powder masterbatch, and has made some progress. The manufacture of super-modified modified split masterbatch is a process that the powder must add to other substances, otherwise it cannot be added. Super modified powder masterbatch added to plastic can significantly improve the plastic's rigidity and creep resistance, hardness and surface damage resistance, heat resistance and hot edge temperature, quite modified powder masterbatch It can also increase the impact strength of plastic food companies. And after adding it also has a lubricating effect, can play a role in promoting the flow, improve the plastic processing technology. Modal Scarf,Modal Fabric Scarf,Modal Wool Scarf,Cashmere Modal Scarf Inner Mongolia Jinshitaihua Cashmere Accessories Co.,Ltd , https://www.nmgshineland.com
First, the application of polypropylene resin:
Super modified powder masterbatch is often used to fill polypropylene. The modified powder masterbatch has a sheet-shaped, transverse structure and a strong structural feature. Therefore, the fine-grained modified powder masterbatch can be used as a supplementary filler for polypropylene. In the modification system of polypropylene, adding the modified powder masterbatch not only can significantly improve the rigidity, surface hardness, heat-resistance, electrical insulation, dimensional stability of polypropylene products, but also can increase the impact of polypropylene. strength. Adding a small amount of modified powder masterbatch in polypropylene can also play a role as a nucleating agent, improve the crystallinity of polypropylene, thereby improving the mechanical properties of polypropylene, and also improve the crystallinity and refine the crystal production. , can also improve the transparency of polypropylene.
Polypropylene composites filled with 20% and 40% ultrafine modified powder masterbatch, both at room temperature and at high temperatures, can significantly increase the rigidity of polypropylene and creep resistance at high temperatures. For example, the flexural modulus of polypropylene with 40% modified split masterbatch can be increased from 16100kg/cm2 to 42000kg/cm2, and the heat distortion temperature can be increased from 62°C (1.82Mpa force) to 88°C or from 121°C. (0. 45 Mpa force increased to 147 ° C. For electrical components, the dielectric constant increased from 1.9 to 2.4, arc resistance from melting immediately extended to 140 seconds. Therefore, in the automotive industry, polypropylene added modified The powder masterbatch composites are used in fan housings, heating hoods, ducts, battery heat shields, fluid pump parts, etc. In the aircraft industry, for refrigerator door vision mats, heaters and vacuum pump covers, washing machine blenders In the electrical industry, it is used for injection molding into various instrument housings and electrical components.
Second, in the polyethylene resin application:
The modified powder masterbatch has a certain degree of water resistance and a high degree of chemical inertness, so it has good chemical resistance and fluidity. It can compete with ABS, nylon, and polycarbonate. Filling polyethylene with it can increase the following Performance: Improves toughness, spoilage modulus and twisted mode; Increases turbulence intensity; Reduces creep tendency at normal and elevated temperatures; Increases thermal deformation temperature and dimensional stability; The coefficient of thermal expansion; improved thermal conductivity; increased surface hardness and brightness of molded parts; increased polyethylene mechanical strength.
For example: The modified powder masterbatch filled with injection-grade high-density polyethylene composite material, in addition to the above-mentioned properties have been significantly improved, the tensile strength of the composite material increases, when added to 10% to the maximum, adding 30% can still Maintaining the original strength, the impact strength increases slightly.
For polyethylene blown film, it is made by special methods. It has good dispersion and uniformity when added to plastics. ABS resin is an amorphous polymer, with excellent molding processability of polystyrene; it has good impact strength, good low temperature resistance, high tensile strength, good creep resistance, and can withstand 7Mpa load size No change. Therefore, it is used to injection molding a variety of low-degree watches, televisions, radios, mobile phones and other shells, of course, in other areas such as: textile equipment, electrical parts, auto parts, aircraft parts and other applications are also very extensive. However, people do not satisfy the existing performance of ABS. The research on ABS modification has been widely carried out, and the relevant information published is not too small. For example, automotive samples made of ABS and PVC blends are plastic sheets, and leather bags made of ABS and PVC are covered with a leather-covered leather cover, which not only has high strength, but also has high toughness and can maintain the internal durability of the surface pattern. It can significantly improve the notched impact strength and tear strength of the blended materials.
Since ABS is an amorphous polymer, it has the function of accommodating more fillers. Adding modified powder masterbatch can not only significantly improve the original performance of ABS, but also reduce costs.
Third, the application of polystyrene resin:
Unmodified general-purpose polystyrene is a non-top polymer, it is hard and brittle, but it has good electrical properties, aging resistance and high dimensional stability, the disadvantage is high brittleness, sensitive to environmental cracking. The addition of modified powder masterbatch can improve the impact toughness, adjust the rheology, significantly improve the disturbance modulus, and increase the tensile yield strength. For example, adding 40% modified powder masterbatch, the disturbance modulus from 23800kg/cm2 Increased 58800kg/cm2, expansion from 336kg/cm2 to 385kg/cm2
Fourth, in the application of nylon resin Polystyrene to nylon (polyamide), in the industry pay special attention to the use of this plastic's toughness and wear resistance. Nylon is generally hard, horny, with good abrasion resistance and high dimensional stability. These can be further increased by fillers or reinforcing agents. Nylon 66's hardness, stiffness, wear resistance and heat distortion temperature are the highest in nylon; nylon 6 is known for its higher toughness; nylon 610 is less absorbent and therefore dimensionally stable, and nylon 11 has an impact strength of The highest nylon.
In all kinds of fillers, the solid structure of talc powder can improve the original performance of nylon, and it is the most important to improve the wear resistance.