ʻO ka mea hoʻohui nucleating kahi ʻano hoʻohui hana hou e hiki ke hoʻomaikaʻi i nā waiwai kino a me nā mechanical o nā huahana e like me ka transparency, ka ʻōlinolino o ka ʻili, ka ikaika tensile, ka paʻakikī, ka mahana distortion wela, ke kū'ē i ka hopena, ke kū'ē ʻana i ka kolo, a me nā mea ʻē aʻe ma ka hoʻololi ʻana i ke ʻano crystallization o nā resins. Hoʻohana nui ʻia ia i ke kaʻina hana o nā plastics crystalline piha ʻole e like me ka polyethylene a me ka polypropylene i nā kaʻa, nā mīkini home, nā meaʻai, nā mea uila, a me nā kahua lapaʻau. No ka laʻana, ʻo ka mea hoʻohui nucleating kahi mea nui i ka hana ʻana o nā resins hana kiʻekiʻe e like me ka polypropylene index melt kiʻekiʻe, ka polypropylene kiʻekiʻe hou, ka paʻakikī kiʻekiʻe, a me ke crystallinity kiʻekiʻe, β-crystalline polypropylene, a me nā mea polypropylene i hoʻololi ʻia no nā noi lahilahi automotive. Ma ka hoʻohui ʻana i nā mea hoʻohui nucleating kikoʻī, hiki ke hana ʻia nā resins me ka transparency i hoʻomaikaʻi ʻia, ka paʻakikī, a me ka paʻakikī. Me ka hoʻonui nui ʻana o ka hana kūloko o ka polypropylene hana kiʻekiʻe e pono ai ka hoʻohui ʻana o nā mea hoʻohui nucleating a me ka ulu wikiwiki ʻana o ke koi no ka hoʻomaʻamaʻa māmā kaʻa a me nā mea hoʻokaʻawale pākahi lithium, aia ka hiki ke hoʻomohala nui no ka mākeke mea hoʻohui nucleating.

Nui nā ʻano onā mea hoʻouluulu, a ke hoʻomau nei ka hoʻomaikaʻi ʻana o kā lākou hana huahana. Wahi a nā ʻano kristal like ʻole i hoʻokumu ʻia e nā mea hoʻohuihui, hiki ke hoʻokaʻawale ʻia i nā mea hoʻohuihui α-crystalline a me nā mea hoʻohuihui β-crystalline. A hiki ke hoʻokaʻawale hou ʻia nā mea hoʻohuihui α-crystalline i nā ʻano inorganic, organic, a me polymer ma muli o ko lākou ʻokoʻa kūkulu. ʻO nā mea hoʻohuihui inorganic e komo pū me nā mea hoʻohuihui i hoʻomohala mua ʻia e like me ka talc, calcium oxide, a me ka mica, he mea kūʻai ʻole a maʻalahi ke loaʻa akā he ʻano transparency maikaʻi ʻole a me ka ʻōlinolino o ka ʻili. ʻO nā mea hoʻohuihui organik e komo pū me nā paʻakai metala carboxylic acid, nā paʻakai metala phosphate, nā derivatives sorbitol benzaldehyde, a pēlā aku. I waena o lākou, ʻo nā derivatives sorbitol benzaldehyde nā mea hoʻohuihui makua loa i kēia manawa, me ka hana maikaʻi loa a me nā kumukūʻai haʻahaʻa, a ua lilo i ʻano hoʻomohala ikaika loa, ʻokoʻa, a me ka nui loa o nā mea hoʻohuihui ma ka home a me ka honua. ʻO nā mea hoʻohuihui polymer he mau mea hoʻohuihui polymeric kiʻekiʻe-melting-point, e like me ka polyvinylcyclohexane a me ka polyvinylpentane. ʻO nā mea hoʻokumu nucleating β-crystalline he ʻelua ʻano nui: kahi helu liʻiliʻi o nā hui polycyclic me nā ʻano quasi-planar, a me nā mea i haku ʻia me kekahi mau waikawa dicarboxylic a me nā oxides, hydroxides, a me nā paʻakai o nā metala mai ka Hui IIA o ka papa periodic. Hōʻoia nā mea hoʻokumu nucleating β-crystalline i ka mahana deformation thermal o nā huahana me ka hoʻomaikaʻi ʻana i ko lākou pale ʻana i ka hopena.

Nā Laʻana o nā Hana Huahana a me nā Hoʻohana o nā Agena Nucleating

Nā huahana

Wehewehe Hana

Nā noi

Mea Hoʻoheheʻe ʻIke ʻia

Hiki iā ia ke hoʻomaikaʻi nui i ka transparency

o ka resin, e hōʻemi ana i ka noe ma mua o 60%,

ʻoiai e hoʻonui ana i ka mahana hoʻoheheʻe wela a me ka mahana crystallization

o ka resin ma 5 ~ 10 ℃,

a me ka hoʻomaikaʻi ʻana i ka modulus flexural ma 10% ~ 15%. Hoʻopōkole pū ia i ke kaʻina hana hoʻoheheʻe,

hoʻonui i ka pono hana, a mālama i ke kūpaʻa o ka huahana.

ʻO ka Polypropylene Index Heheʻe Kiʻekiʻe

(a i ʻole Polypropylene MI kiʻekiʻe)

Mea Hoʻopaʻa Nucleation

Hiki iā ia ke hoʻomaikaʻi nui i nā waiwai mechanical o ka resin,

me ka hoʻonui ʻia o ka modulus flexural a me ka ikaika kūlou ma luna o 20%,

a me ka hoʻonui ʻia ʻana o ka mahana hoʻoheheʻe wela e 15 ~ 25 ℃. Aia kekahi hoʻomaikaʻi piha a kaulike hoʻi i nā ʻano like ʻole e like me ka mahana crystallization a me ka ikaika hopena,

ʻo ka hopena i ka emi ʻana o ke kaulike a me ka hoʻemi ʻana i ka deformation warpage o ka huahana.

ʻO ka Polypropylene Index Melt Kiʻekiʻe, Polypropylene Paʻakikī Kiʻekiʻe Hou, Paʻakikī Kiʻekiʻe, a me ka Crystallization Kiʻekiʻe, Mea Polypropylene i Hoʻololi ʻia no nā noi paia lahilahi kaʻa

Mea Hoʻoikaika Nucleating β-Crystalline

Hiki iā ia ke hoʻoulu pono i ka hoʻokumu ʻana o ka β-crystalline polypropylene,

me ka helu hoʻololi β-crystalline ma luna o 80%,

hoʻomaikaʻi nui i ka ikaika hopena o ka resin polypropylene,

a hiki i ka hoʻonui ʻana ke piʻi ma mua o 3 mau manawa.

ʻO ka Polypropylene Index Melt Kiʻekiʻe, ʻO ka Polypropylene Paʻa Kiʻekiʻe Hou, ʻO ka Paʻakikī Kiʻekiʻe, a me ka Crystallization Kiʻekiʻe, β-Crystalline Polypropylene

 


Ka manawa hoʻouna: Aug-23-2024