First, the difference between primary and secondary
1, PP: PP is a polymer formed by addition polymerization of propylene.
2.PPR:PPR is a random polymer of polypropylene and a kind of PP polypropylene.
Second, the advantages are different.
1, PP: PP has chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties and good high wear resistance.
2.PPR:PPR has the advantages of good toughness, high strength, excellent processability, good creep resistance at high temperature and high transparency.
Third, the use is different.
1, PP: PP is widely used in the production of clothing, blankets and other fiber products, medical devices, automobiles, bicycles, parts, transportation pipelines, chemical containers and so on. , also used in food and drug packaging.
2.PPR:PPR is widely used in the production of pipes, sheets, daily necessities, packaging materials, household appliances and various films.
Baidu encyclopedia-polypropylene
Baidu encyclopedia -PPR