PP (polypropylene) is a common plastic material with good heat resistance, chemical resistance and low density. MFPP (modified polypropylene) is a modified polypropylene material with stronger strength and toughness. For these two materials, this article will provide a popular science introduction in terms of raw material sources, preparation processes, characteristics, and application fields.
1. Raw material source of PP and MFPP The raw material of PP is prepared by polymerizing propylene in petroleum. Propylene is a petrochemical product mainly obtained through the cracking process in refineries. Modified polypropylene MFPP improves its performance by adding modifiers to ordinary PP. These modifiers can be additives, fillers or other modifiers that change the polymer structure and composition to give it better physical and chemical properties.
2. Preparation process of PP and MFPP The preparation of PP is mainly achieved through polymerization reaction. Propylene monomer is polymerized into a polymer chain of a certain length through the action of a catalyst. This process can occur continuously or intermittently, at high temperatures and pressures. The preparation of MFPP requires mixing the modifier and PP. Through melt mixing or solution mixing, the modifier is evenly dispersed in the PP matrix, thereby improving the properties of PP.
3. Characteristics of PP and MFPP PP has good heat resistance and chemical stability. It is a transparent plastic with a certain hardness and rigidity. However, the strength and toughness of ordinary PP are relatively low, which leads to the introduction of modified materials such as MFPP. MFPP adds some modifiers to PP to make MFPP have better strength, toughness and impact resistance. Modifiers can also change the thermal conductivity, electrical properties and weather resistance of MFPP.
4. Application fields of PP and MFPP PP is widely used and is commonly used in containers, furniture, electrical appliances and other products in daily life. Due to its heat resistance and chemical resistance, PP is also used in pipes, containers, valves and other equipment in the chemical industry. MFPP is often used in applications requiring higher strength and toughness, such as automotive parts, electronic product casings, building materials, etc.
In conclusion, PP and MFPP are two common plastic materials. PP has the characteristics of heat resistance, chemical corrosion resistance and low density, and MFPP has modified PP on this basis to obtain better strength, toughness and impact resistance. These two materials play an important role in different application fields, bringing convenience and development to our lives and various industrial fields.
Post time: Nov-04-2023
