PROD­UCTS

Af­ter two years of in­ten­sive re­search, BASF is now able to present pro­to­types of the world’s first par­ti­cle foam based on polyether­sul­fone (PESU)

Refining & Petrochemicals Middle East - - CONTENTS -

Re­cently launched prod­ucts, so­lu­tions, pro­cesses and tech­nolo­gies from the lead­ing sup­pli­ers for the process in­dus­try

The foam is char­ac­terised by its unique com­bi­na­tion of prop­er­ties: high-tem­per­a­ture re­sis­tance, in­her­ent flame re­tar­dancy, and its ex­treme light weight cou­pled with great stiff­ness and strength.

It is, there­fore, par­tic­u­larly well-suited for com­plexshaped com­po­nents in cars, air­planes and trains, which re­quire ex­cel­lent me­chan­i­cal prop­er­ties to­gether with the abil­ity to with­stand high op­er­at­ing tem­per­a­tures, or to meet strin­gent flame-re­tar­dant re­quire­ments.

The ex­pand­able PESU gran­u­late is pre-foamed into beads with low den­si­ties be­tween 40 and 120g/l and can be pro­cessed into moulded parts with com­plex 3D ge­ome­tries us­ing tech­nolo­gies avail­able in the mar­ket.

Ul­tra­son E, the PESU of BASF, is an amor­phous ther­mo­plas­tic with an ex­tra­or­di­nary tem­per­a­ture pro­file. It has a high glass tran­si­tion tem­per­a­ture of 225°C and re­mains di­men­sion­ally sta­ble up to this tem­per­a­ture. Its ex­cel­lent me­chan­i­cal and di­elec­tric prop­er­ties are only slightly de­pen­dent on the tem­per­a­ture, too. Foams made of Ul­tra­son E are ap­proved for use in air­craft.

The ma­te­rial, with its ex­cep­tion­ally high lim­it­ing oxy­gen in­dex of 38 (ac­cord­ing to ASTM D 2863), dis­tin­guishes it­self be­cause it meets the re­quire­ments for com­mer­cial air­craft with re­gard to com­bustibil­ity, low heat re­lease and low smoke den­sity (‘fire, smoke, tox­i­c­ity’) even with­out the ad­di­tion of flame re­tar­dants, which means it is in­trin­si­cally flame re­tar­dant.

De­spite its low den­sity, the PESU par­ti­cle foam thus en­ables ex­tremely stiff and strong com­po­nents with ex­cel­lent di­men­sional sta­bil­ity at high tem­per­a­tures. Ex­panded moulded parts made from one sin­gle ma­te­rial of­fer nu­mer­ous ad­van­tages com­pared to tra­di­tional hon­ey­comb struc­tures coated with phe­no­lic resins.

BASF has de­vel­oped the world’s first par­ti­cle foam based on polyether­sul­fone.

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