How to improve the hardness of PP compounded granules?

1.?Adding mineral powder to fill can effectively increase the hardness of PP, reduce the shrinkage rate, and also reduce the material cost. Different mineral powder such as talc powder, calcium carbonate, barium sulfate can be filled according to the demand; The greater the proportion of filling, the greater the hardness, but the corresponding toughness will be reduced, usually choose a filling ratio of about 10-40%.

?

2.?Glass fiber filling, will increase the strength, hardness, dimensional stability of PP, but also increase the flame retardant performance, is one of the most used filling methods.When PP material is used to make structural parts, support parts and other products, glass fiber reinforcement is usually selected. However, glass fiber filling will affect the appearance of the product, and it is more used in the production of internal parts.

?

3.?Chemically modified grafting can also increase the hardness of PP, such as maleic anhydride grafting.

?

4.?If it is only to increase the surface hardness of the product, it can be achieved by increasing the coating or surface treatment.

?

5.?When PP is polymerized, ethylene propylene rubber is added, and the hardness of the finished product will be higher than that of general PP.

?

Jwell Machinery is professional in different kinds of PP compounding line,and have many customers all over the world,if you have any need or questions,pls conatct me.

?

Contact:Michelle Jiang

Mail:[email protected]

Phone/whatsup/wechat:0086 18851210802

URL:www.jwellchina.com