TWC/GPF support MAT

The three-way catalytic converter is a conventional solution of gasoline exhaust after-treatment. As its operation temperature ranges from 400 to 1100 deg.C, material with adequate expansion responds should be applied to make up the thermo-expansion of metal/ceramic gap.   With ultra-thin-wall substrate, non-intumescent mat KY1850HT(-180K) and KYE400P is recommended.

Gasoline exhaust after-treatment system should have GPF to meet the requirement of Euro VI stage standard. The huge back-pressure of GPF challenges the total life cycle performance of support mat. Polycrystalline non-intumescent mat KYE400P could take on this task, while in some case ceramic non-intumescent mat KY1850HT(-180K) could also be used.

DOC/DPF/SCR/ASC/POC support MAT

Diesel exhaust after-treatment system is the combination of DOC, DPF, SCR, ASC and POC. These catalytic units usually have quite larger diameter than TWC and GPF, and run in relative low temperature range. In this case, classical intumescent mat could not be used as it could not work well below 400deg.C. Micro-intumescent mat KY800 and its high-performance version KY860 are good solutions in most cases. When the relative expansion of metal/ceramic gap is large, ultra-mirco-intumescent mat KY860 and non-intumescent mat KY1850HT(-180K) are prefered, AES(so-called green fiber) intumescent mat KY7000NC is also suitable. When the relative expansion of metal/ceramic gap is extremly large, non-intumescent mat KEY400P is better choice.