He aha ka Polyurethane?
Ke kamaʻilio nei mākou e pili ana i ka polyurethane, kahi ʻano plastic, hiki ke hoʻolālā ʻia e lilo i ʻaʻahu wai. Hana ʻia kēia ma ka hoʻohui ʻana i ʻelua mau molekala ʻokoʻa. Ke hui pū ʻia kēia mau mea kemika me kekahi i kekahi a ʻo ia ka mea e hoʻonui ai a paʻakikī. Kapa ʻia kēia kaʻina hana he "polymerization," a ʻo ia ke kumu o ka polyurethane e paʻa loa a paʻa. ʻO ka mea nui me ka polyurethane ʻo ia ka maʻalahi. Hiki iā ia ke kūlou a neʻe me ka haki ʻole, ʻoi aku ka maikaʻi o ka pale wai. He mea maikaʻi ia no nā ʻili he nui ʻO ka uhi wai polyurethane no ka mea hiki ke hoʻololi i nā ʻano like ʻole
Pehea ka lōʻihi?
ʻOi aku ka lōʻihi o ka polyurethane ma mua o nā huahana wai wai maʻamau, e like me ke kā a me ka asphalt. ʻO kēlā mau mea Peʻa wai ʻaʻalika hiki ke luhi a hoʻohaʻahaʻa i ka manawa, no laila pono lākou e pani. ʻOiai hiki i ka polyurethane ke lōʻihi i nā makahiki he 25 mau makahiki a ʻoi aku paha, ma mua o ka pono e hoʻololi ʻia. ʻO kēlā ola lōʻihi e unuhi i ka nui o nā waihona no nā mea hale a me nā mea kūkulu hale. ʻO ia ka mea e hoʻonui ai ʻO ka uhi wai polyurethane ʻoi aku ka maikaʻi no ka mea ʻaʻole pono ʻoe e hoʻololi pinepine.
