Fluoroelastomers having a monomer composition of tetrafluoroethylene (TFE), hexafluoropropylene (HFP) and
vinylidene fluoride (VF2) with an incorporated cure site monomer that allows peroxide crosslinking have grown in
commercial significance in the past 20 years since the introduction of Viton GF in 1980. While these FKM terpolymers
show improved water, steam and acid resistance, the need to peroxide crosslink them has caused processing problems
such as mold sticking and poor hot tear resistance.
This paper will introduce a new generation of peroxide-cured HFP-containing fluoroelastomers, which use a new,
unique improved cure site monomer system. These ICSM containing products give much faster cure rates, low mold
fouling and improved hot-demolding properties. In addition, they provide improved compression set resistance, even
when not postcured, and enhanced aqueous media resistance. Processing and end-use data will highlight the utility of
these new type fluoroelastomers.
Vui lòng xem tại đường dẫn:
Nguồn: Quốc Anh, Cao su Đức Minh
Nguồn: Trích từ trang web Diễn đàn cao su
http://caosu.org/entry.php/108-Peroxide-cured-HFP-boosts-cure-rate-demolding
