E mae ana nā huahana kala kala ma muli o nā kumu he nui. ʻO ka mae ʻana o nā huahana kala kala e pili ana i ka pale mālamalama, kūpaʻa oxygen, kūpaʻa wela, ʻākika a me alkali kūʻē ʻana o ka toner, a me nā ʻano o ka kēpau i hoʻohana ʻia.

ʻO ka mea aʻe kahi anamanaʻo kikoʻī o nā mea mae o ke kala kala.

1. Ka māmā o ke kala

Hoʻopili pololei ka wikiwiki o ka colorant i ka mae ʻana o ka huahana. No nā huahana kūwaho i hōʻike ʻia i ke kukui ikaika, ka wikiwiki o ka wikiwiki (ka wikiwiki wikiwiki) pae o ke kala i hoʻohana ʻia he hōʻailona nui. Maikaʻi ka pae wikiwiki o ka wikiwiki, a e mae koke ka huahana i ka wā hoʻohana. ʻO ka papa pale mālamalama i wae ʻia no nā huahana kū i ke aniau ʻaʻole ia ma lalo o ʻeono mau helu, ʻoi aku ʻehiku a ʻewalu paha mau kaha, a hiki i nā huahana o loko ke koho i ʻehā a ʻelima paha mau kaha.

He hopena nui ka pale mālamalama o ka kēpau lawe i ka loli o ke kala, a hoʻololi ke ʻano mole mole o ke kēpau a mae hoʻi ma hope o ka hoʻoulu ʻia e nā kukuna ultraviolet. ʻO ka hoʻohui ʻana i nā mea hoʻopaʻa uila e like me nā mea hoʻopili ultraviolet i ka masterbatch hiki ke hoʻomaikaʻi i ke kūpaʻa o nā mea kala a me nā huahana kala kala.

2. Kūpaʻa wela

ʻO ke kūpaʻa wela o kahi pigment pale wela i pili i ke degere o ka pohō kaumaha, discoloration, a me ka mae ʻana o ka pigment i ka mahana hana.

Hoʻokomo ʻia nā pigment inorganic i nā mea hao hao a me nā paʻakai, me ke kūpaʻa wela maikaʻi a me ke kūpaʻa wela kiʻekiʻe. E loli nā pigment o nā mea hoʻohui a me nā loli o ka palaho ma kahi mahana. ʻOi aku no nā huahana PP, PA, PET, ʻo ke ana wela ma luna o 280 ℃. Ke koho ʻana i nā kala, pono i kekahi e hoʻolohe i ka pale kūwaho o ka pigment, a e noʻonoʻo ʻia ka manawa kūpaʻa wela o ka pigment ma ka lima ʻē aʻe. ʻO ka manawa kūpaʻa wela ʻo 4-10min. .

3. Antioxidant

Hoʻopilikia kekahi mau mea ʻokanika i ka degradation macromolecular a i ʻole nā hoʻololi ʻē aʻe ma hope o ka hoʻowali ʻana a mae wale. ʻO kēia kaʻina hana he oxidation wela kiʻekiʻe i ka wā o ka hana ʻana, a me ka oxidation i ka wā e hālāwai ai i nā oxidants ikaika (e like me chromate i ka chrome melemele). Ma hope o ka loko, hoʻohana ʻia nā pigment azo a me ka chrome melemele i ka hui pū ʻana, e mae wale ke kala ʻulaʻula.

4. ʻAikika a me alkali kūʻē

ʻO ka mae ʻana o nā huahana kala kala e pili ana i ka pale kemika o ka colorant (acid and alkali resistence, oxidation-whakaiti resistence). ʻO kahi laʻana, kūpaʻa ka molybdenum chrome ʻulaʻula i ka dilute acid, akā maʻalahi ia i nā alkalis, a ʻaʻohe kūpaʻa ʻo cadmium melemele. ʻO kēia mau pigment ʻelua a me nā resins phenolic he hopena ikaika e hōʻemi ana i kekahi mau kala, kahi e hopena ai i ka pale wela a me ke kūmau o ke anilā o nā kala a kumu e mae ai.

No ka mae ʻana o nā huahana kala kala, pono e koho ʻia e like me nā kūlana hana a hoʻohana i nā koi o nā huahana lula, ma hope o ka loiloi piha o nā waiwai i ʻōlelo ʻia i luna o nā pigment, nā kala, nā surfactants, nā dispersants, nā resins a me anti mea hoʻonui ʻelemakule.