He kiʻekiʻe loa ka paʻakikī o ke aniani, i ka wā ʻaʻole maʻalahi ka hoʻohana ʻana i ka ʻōpala a me ka ʻoki ʻana i ka nui o ka sodium calcium glass vickers hardness (HV) he 400 ~ 480MPa, a ʻo ka paʻakikī o ka plastic he haʻahaʻa haʻahaʻa, maʻalahi e ʻohi, e like me ka polyvinyl chloride (PVC) HV mea 10 ~ 15MPa, thermosetting polyester (PET) mea 10 ~ 21MPa, polyethylene (PE) mea 5 ~ 8MPa, polypropylene (PP) mea 6 ~ 11MPa.
Ka manawa hoʻouna: Jan-10-2020