No ke aha i hana ʻia ai nā pale kaʻa i ka plastik?
Ke koi nei nā lula i nā mea pale mua a me hope o ke kaʻa e hōʻoia ʻaʻole e hōʻeha nui ke kaʻa i ke kaʻa i ka wā e kuʻi iki ai he 4km/h. Eia kekahi, pale nā pale mua a me hope i ke kaʻa a hōʻemi i ka pōʻino o ke kaʻa i ka manawa like, akā pale pū i ka mea hele wāwae a hōʻemi i ka ʻeha i loaʻa i ka mea hele wāwae i ka wā e kuʻi ai. No laila, pono i ka mea hale pale pale ke loaʻa nā ʻano penei:
1) Me ka paʻakikī liʻiliʻi o ka ʻili, hiki ke hōʻemi i ka hōʻeha o ka poʻe hele wāwae;
2) Elasticity maikaʻi, me ka hiki ke kū'ē i ka deformation plastic;
3) Maikaʻi ka ikaika damping a hiki ke omo i ka ikehu hou aʻe i loko o ka pae elastic;
4) Ke kū'ē i ka makū a me ka lepo;
5) Loaʻa iā ia ke kūpaʻa maikaʻi i ka waikawa a me ka alkali a me ke kūpaʻa wela.
