ʻO Vinylpyrrolidone / Vinyl Acetate
Aia nā Copolymers VP / VA me nā wana like ʻole o vinylpyrrolidone i ka vinyl acetate a loaʻa ʻia e like me ka pauka keʻokeʻo a i ʻole nā aniani moakaka i ka wai, ka etanol a me ka isopropanol. He ʻano paʻakikī, aniani, maʻalahi, hiki ke hoʻoneʻe ʻia i ka wai, nā kiʻi ʻoniʻoni i loaʻa i ka oxygen e pili ana i ke aniani, nā lula. a me nā metala, kēia mau waiwai, hoʻopili ʻia me ka hiki ke kaohi i kā lākou hydrophilicity ma o ka monomer haku, alakaʻi i ka nui o kāna noi ʻoihana.
Nā Papahana Huahana Nui:
|
Huahana |
PVP / VA 64 Pauka |
PVP / VA 64W |
PVP / VA 73W |
| Helehelena | Keʻokeʻo i keʻokeʻo momona pauka | Transparent i iki wai melemele | |
| VP / VA | 60/40 | 60/40 | 70/30 |
| K Waiwai | 27-35 | 27 ~ 35 | 27 ~ 35 |
| Mea hoʻolalelewa | 0.2% max. | 0.2% max. | 0.2% max. |
| Wai | 5.0% max. | 48 ~ 52% | 48 ~ 51% |
| ʻImi paʻa | 95% max. | 48 ~ 51% | 48 ~ 52% |
| ʻAlepa Sulphated | 0,1% max. | 0,1% max. | 0,1% max. |
| Ka waiwai pH (10% i ka wai) | 4.0 ~ 7.0 | 4.0 ~ 7.0 | 4.0 ~ 7.0 |
Nā noi:
Aia nā copolymers VP / VA i nā mea hanahana ʻoihana i nā mea hoʻoheheʻe wela, nā mea hoʻopaʻa photoresist a me nā uhi no ka pepa media jet jet, ke kiʻi ʻoniʻoni, nā mahiʻai a me nā mea ʻē aʻe.
* Nā pale ma ka pepa, kiʻiʻoniʻoni, nā substrates ʻē aʻe * Nā lina remoistenable wai
* Nā mea hoʻopili i hiki ke hoʻoheheʻe ʻia me ka wai
* Photoresist / mea hoʻopaʻa mask mask * Nā mea mahiʻai mahiʻai
* Bioadheives * pale masks
* Nā lau lau mea kanu
