Kumu kumu o ka ʻenehana ho'ōla UV

ʻO ka mālama ʻana o UV e pili ana i ka hoʻōla ʻana o UV i ka ʻōnaehana hoʻōla radiation (i kapa ʻia ʻo UV curing).He ʻenehana ʻōmaʻomaʻo hou ka ʻenehana hoʻōla hoʻoheheʻe ʻana, e pili ana i ke kaʻina o ka polymerization koke a me ka hoʻōla ʻana i ke keʻa o ka ʻōnaehana pae wai ma o ke kukui ultraviolet, ka uila uila a me ka irradiation r-ray.Loaʻa iā ia nā mea maikaʻi o ka mālama ʻana i ka ikehu, ka hana kiʻekiʻe, ka hoʻokō ʻana i ka uhi maikaʻi, ka mālama ʻana i ke kāpili, ka palekana a me ka mālama ʻana i ke kaiapuni, kiʻekiʻe o ka mālamalama, ka lōʻihi lōʻihi, a me nā mea ʻē aʻe. (ʻo ka granite a me ka marble aia).

Nā ʻano hana hana:

1) Hana maikaʻi i ka uhi ʻana: ʻO ka uhi ʻana o ka UV curing he hana maikaʻi loa, kiʻekiʻe kiʻekiʻe, kiʻekiʻe paʻakikī, a me ke kūpaʻa kemika maikaʻi.Hoʻomaikaʻi maikaʻi i ka maikaʻi o ka hoʻoponopono ʻana i nā lua pōhaku.

2) Ka palekana a me ka palekana o ke kaiapuni: No ka wikiwiki o ka hoʻomaʻamaʻa ʻana o UV, ua hoʻemi ʻia ka hoʻokuʻu ʻana o nā mea hoʻoheheʻe kūlohelohe i ka lewa i ka ʻole, kahi palekana a me ka ʻoluʻolu.

Kaʻina hana:

ʻO nā uhi UV he mau uhi hiki ke mālama ʻia.Ma hope o ka hoʻomālamalama ʻia ʻana o nā uhi hiki ke hoʻōla ʻia e UV, ʻo ka photoinitiator e hoʻomoʻa mua i ka ikehu radiation UV a hoʻāla ʻia.Lele nā ​​electrons i ka papa waho o kona mau mole a hoʻoulu i ke kikowaena hana i ka manawa pōkole loa.A laila, hana ke kikowaena ikaika me nā pūʻulu unsaturated i loko o ka resin, e hoʻokaʻawale i nā paʻa pālua i loko o ka resin curing light-emitting a me nā molekole diluent ikaika e hoʻokaʻawale ʻia, e hopena i ka hopena polymerization mau, no laila e hoʻopili i kekahi i kekahi e hana i kahi. kiʻiʻoniʻoni.ʻO ke aʻo ʻana i nā kinetics kemika e hōʻike ana ʻo ke ʻano o ka hoʻōla ʻana o UV i nā uhi UV he free radical chain polymerization.ʻO ka mua, ka pae photoinitiation;ʻO ka lua, ʻo ia ka pae hoʻoulu ʻana o ke kaulahao.I kēia wā, i ka ulu ʻana o ke kaulahao, e hoʻopili ʻia ka ʻōnaehana a paʻa i kahi kiʻiʻoniʻoni;Hoʻopau ke kaulahao Z post chain i ka hoʻopau ʻana i ke kaulahao ma o ka hui ʻana a i ʻole disproportionation.

1. Oligomer

ʻO Prepolymer, i ʻike ʻia ʻo ka oligomer a i ʻole resin, ʻo ia ka iwi o UV glue.E pili ana ia i kahi papa o nā polymers molekala me ka hoʻonohonoho paʻa pālua unsaturated.Hoʻopili hou ia a hana i ke kino ho'ōla i hoʻopili ʻia ma hope o ka hoʻonui ʻana, e hāʻawi ana i nā mea waiwai me nā waiwai kino a me nā mea kemika.No ka laʻana, viscosity, tensile strength, shear strength, hardness and compliance.

2. Monomer

ʻO nā monomers, i ʻike ʻia he reactive diluents, ka hapa nui o nā molekala liʻiliʻi i loaʻa i hoʻokahi a ʻoi aʻe nā paʻa pālua, i hoʻohana nui ʻia e hoʻoponopono i ka viscosity o ka ʻōnaehana a komo i ka polymerization, akā loaʻa kekahi hopena i ka helu polymerization a me nā waiwai waiwai.Hiki ke hoʻokaʻawale ʻia nā monomers i nā monomers monofunctional, monomers bifunctional a me nā monomers multifunctional e like me ke kiʻekiʻe o ka hana.Pono nā monomers monofunctional e hoʻonui i ka maʻalahi a me ka pili o ka colloid;ʻAʻole hana wale nā ​​monomers difunctional a me nā monomers multifunctional ma ke ʻano he mea hoʻoheheʻe wale nō, akā hana pū kekahi ma ke ʻano he mea hoʻohui keʻa.He hopena koʻikoʻi ko lākou i ka paʻakikī, ka paʻakikī a me ka ikaika.

3. Nā mea hoʻomaka kiʻi)

ʻO nā photoinitiators nā mea kikowaena ikaika e hiki ke hoʻopaʻa i ka ultraviolet a i ʻole ke kukui ʻike ʻia a hana i ka polymerization hoʻomaka i ka hiki ma o nā loli kemika.ʻO lākou nā ʻāpana koʻikoʻi o ka ʻōnaehana photopolymerization a pāʻani i kahi hana koʻikoʻi i ka sensitivity (curing rate) o ka ʻōnaehana hoʻōla UV.Hoʻokomo ʻia nā Photoinitiators i nā photoinitiators radical manuahi a me nā photoinitiators cationic, i hoʻohana ʻia i nā ʻōnaehana radical manuahi a me nā ʻōnaehana cationic.