Introduction to PP Modified Polypropylene
Time:2020-03-04
Views:135
Modified polypropylene (PP) is widely used in home appliances, automobiles and other fields because of its excellent properties. Modified polypropylene products can be seen everywhere in our daily life. Do you know what modified polypropylene is?
Polypropylene is a kind of thermoplastic resin made from propylene polymerization. Polypropylene is a non-toxic, odorless, tasteless milky white high crystalline polymer with a density of only 0. 5% 90~0. 91g/cm, which is one of the lighter varieties of all plastics at present. It is especially stable to water, and the water absorption rate in water is only 0 01%, molecular weight about 80000 ~ 150000, good formability, but large shrinkage, good surface gloss, so it is widely used in appearance parts and shells.
As polypropylene (PP) has excellent comprehensive properties, relatively low price and easy modification, new materials of modified polypropylene (PP) emerge in endlessly, and its consumption in automobile, household appliances, tool equipment, electronics, construction, computer and other industries is expanding day by day.
It has played a great role in promoting the development of various modification processes and formulations of polypropylene materials (PP). However, PP material itself also has many shortcomings, such as poor aging resistance, toughness to be improved, low strength, poor transparency, flammability, large molding shrinkage, easy warpage of products, etc. these defects limit the application of PP material in automobile, home appliance and other industries, so it must be modified. After modification of polypropylene, the following kinds of modified polypropylene can be obtained:
Reinforced polypropylene: it can be divided into glass fiber reinforced, carbon fiber reinforced, inorganic powder filled and glass fiber / inorganic powder reinforced according to different added materials. It is mainly used in containers, electronic appliances, structural parts of daily necessities, structural parts of household appliances, fan blades, paddle blades, vacuum cleaner parts, refrigerator internal parts, etc.
Flame retardant polypropylene: environmentally friendly flame retardant polypropylene with flame retardant grade of V0 is mainly used in microwave ovens, pressure cookers, electric cookers and other electronic and electrical components with flame retardant requirements. There is halogen-free flame retardant polypropylene material, with flame retardant grade of ul94-v0 and environmental protection. It is mainly used in household appliances, automotive flame retardant parts, electronic appliances and components with flame retardant requirements.
High gloss polypropylene: high gloss heat-resistant polypropylene, high gloss spray free polypropylene, high phosgene gas assisted forming polypropylene, low shrinkage high gloss polypropylene, low odor high gloss polypropylene, which are mainly used in small household appliance shell, bathroom, foot wash basin, toilet cover, etc.
Heat resistant polypropylene: mainly used in rice cooker inner cover, middle ring, rice cooker steamer, spoon, microwave oven door frame, dishwasher parts, household appliance internals, etc.
High impact polypropylene: mainly used in refrigerator parts, turnover boxes, seats, etc.
Antistatic polypropylene: mainly used in household appliance shell, industrial, commodity parts, electronic component packaging materials, etc.
Weather resistant polypropylene: mainly used in outdoor air conditioner components, outdoor floors, outdoor supplies, etc.
It can be seen from the above that there are many modification methods for PP, and there are various types of modified polypropylene. PP is widely used and can be used to prepare special materials that meet the different requirements of all walks of life. Therefore, the modification of PP is developing rapidly, becoming a new material with many kinds of modified plastics and widely used.
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