ʻO nā pono e pili ana i nā huahana PU Foam

ʻO PU ka pōkole no ka polyurethane rubber, i hana ʻia e ka condensation o polyester a i ʻole polyether me nā pūhui diisocyanate. Wahi a ka monomer, hiki ke hoʻokaʻawale ʻia i ke ʻano polyester a me ke ʻano polyether, a e like me ke ʻano hana: ʻano hoʻolei, ʻano hui ʻana, a me ke ʻano thermoplastic.

pono:

1. ʻO ka ikaika mechanical kiʻekiʻe a me ke kūpaʻa paʻa, ʻoi aku ma mua o nā mea ʻē aʻe i ʻike ʻia, ʻoi aku ma mua o ʻehā mau manawa kiʻekiʻe ma mua o NR a me SBR.

2. Loaʻa iā ia ka paʻa o ka ea, elasticity, a me ke kūpaʻa ʻelemakule e like me IIR (butyl rubber).

3. He maikaʻi nō hoʻi ke kūpale ʻaila.

keakea:

1. Poor wela a me ka wai kū'ē, oluolu e hydrolyze i ka wai.

noi:

1. Hoʻohana nui ʻia i nā huahana me ke kūpaʻa lole kūikawā, nā koi ikaika kiʻekiʻe, a me ke kūpaʻa ʻaila maikaʻi.

2. Hiki ke hoʻohana ʻia i mea pale i ka ʻoihana ākea a me ka ikehu atomic.

3. ʻO ka hopena o ka isocyanate me ka wai hiki ke hoʻokuʻu i ka CO2, hiki ke hana i ka puʻupuʻu PU 30 mau manawa ma mua o ka wai.

4. Ma muli o ka maikaʻi loa o ka mīkini a me ka uila uila, hiki ke hoʻohana ʻia no ka hoʻokaʻawale ʻana, ke kani ʻana o ke kani, a me ke kūpaʻa haʻalulu.