Polycarbonate recycling material toughening

2014-09-29

Polycarbonate (PC) isa kind of integrated high performance engineering plastics, has been widelyused in the fields of national economy, such as optical, electrical,construction, automobile, office equipment, packaging, sports equipment, travelsupplies, health care and other fields, including optical and electricalproducts is an important market, each accounted for nearly a quarter of totalconsumption.

But the PCafter many recycling processing, prone to degradation, its mechanicalproperties, especially the notched impact strength will be significantly lower.PC recycled material modified to reduce the production cost and environmentprotection has very important significance. The study found that the PCrecycled material and other polymer blending or to enlarge chain can greatlyimprove the material mechanics performance. In actual production, the contentof toughening agent is an important control factor, is also the key factorsthat determine the costs of materials, finished products.

Conclusion:

(1) in ther - PC to join two toughening agent (B - A - 688, 31) can make A blend ofnotched impact strength and elongation at break are improved significantly.When the mass fraction of two kinds of toughening agent were 6%, the notchedimpact strength of blend of 21 kj / ㎡ to around 60 kj / ㎡, increased to 3times; Blend of elongation at break is from 15% to 127% and 15% respectively,but the tensile strength of the blend.

(2)compared with the toughening agent A - 688, B - 31 can obviously improve thematerial of low temperature toughness. Among them, the best when the massfraction of 2% and 2%. B - 31 to improve the low temperature toughness of r -PC is more obvious.