Me pēhea te whakapai ake i te kounga o te piri me te moata mā te whakamahi i te paura PVA

He kaha te mahi a te paura PVA hei āpitihanga. Ka whakanui ake i te kaha o te piri, te ngāwari, me te ātete wai o ngā ranunga sima. Mā te tāpiri i te paura PVA ka hangaia he whatunga polymer moroiti. Ka herea e tēnei whatunga ki te konganuku me te papa. Ka whakatauhia ngā take pūtake o ngā hapa noa: te piri ngoikore, te puehu mata, te ngatata. He kaiwhakarato pono o Haina, ka whakaratohia te paura PVA waipiro polyvinyl mō te Piripiri / Moata, te kounga e hiahiatia ana e koe. Whakamahia tika te paura PVA mō ngā hua roa, kounga teitei.

Ngā Whakaaro Matua

· Paura PVAka hangaia he whatunga pūmua e hono kaha ana i ngā matūriki sima.
· Ka ārai i te puehu o te mata, ka whakaiti hoki i ngā kapiti mimiti o te moata.
· Tāpirihia te paura PVA 0.3% ki te 0.5% ki te ranunga maroke mō ngā hua pai rawa atu.

He aha te paura PVA, ā, me pēhea te mahi?

Paura PVA, he waipiro polyvinyl rānei, he pūhui hangai wairewa-wai. Ka kitea e koe i roto i te maha o ngā hua hanga. Ka rewa tēnei paura ma ki te wai hei hanga i tētahi otinga mārama, maha ngā whakamahinga. Ka hangaia e ngā kaihanga i roto i ngā momo taumata. He rerekē ngā āhuatanga o ia taumata mō ngā whakamahinga motuhake. Ka taea e koe te whiriwhiri i tētahi taumata e rewa ana i te pāmahana rūma, i tētahi rānei e hiahia ana ki te wai wera i runga ake i te 95°C. Nā tēnei ngāwari ka whai hua te paura PVA puta noa i te maha o ngā ahumahi.

Ngā Āhuatanga Matua o te Paura PVA

He maha ngā āhuatanga whakamiharo o te paura PVA. Ka hangaia he kiriata kaha, mārama hoki, he kaha ā-mīhini teitei. Ka ātete ēnei kiriata ki ngā whakarewa, ki ngā hinu, me te pakū. He pai hoki te mahi a te polymer hei emulsifier me te whakaū. Ka maioha koe ki tōna pumau wera. Ka noho pumau te PVA i raro i te 40°C, ā, ka ngawari noa i ngā pāmahana teitei ake. Ka pirau i runga ake i te 220°C, ā, he haumaru mō te nuinga o ngā tono hanga.

Ka rerekē te matotoru o ngā otinga PVA i runga i te matapae. Ka taea e koe te whakahaere i tēnei āhuatanga mā te kukū me te pāmahana. E whakaatu ana te ripanga i raro nei i te pānga o ēnei taurangi ki te otinga:

Te Tikanga Mahi i roto i te Moata me ngā Ranunga Piripiri

Ina tāpirihia te paura PVA ki te ranunga moata, ka memeha i te wā e whakaranua ana. Ka horapa ngā mekameka pūmua puta noa i te wāhanga wai. I te wā e mārō ana te ranunga, ka mimiti te wai. Kātahi ka hangaia he kiriata tonu e ngā mekameka PVA. Ka hangaia e tēnei kiriata he tukutuku moroiti e takai ana i ngā matūriki sima me ngā mea whakahiato. He rite te mahi a te tukutuku ki tētahi piriti. Ka hono i ngā rauemi kore-waro tetahi ki tetahi, ki te mata o te papa.

Ka tino whakapai ake tēnei whatunga pūmua i te piri. Ka whakakīia ngā pūwero iti me ngā hapa o te papa. Ka whakarei ake hoki te kiriata i te ngāwari o roto i te moata kua whakapakeketia. Ka pai ake te pupuri wai i a koe i te wā e whakamaroke ana. Ka ārai tēnei āhuatanga i te maroke wawe, ā, ka whakaiti i te ahotea whakaheke. Ko te mutunga he hononga kaha ake, he roa ake. Mō te kounga pumau, me tiki mai i tētahi Kaiwhakarato Haina pono, paura PVA polyvinyl waipiro mō te Piripiri/Moata. Ka whakarite tā rātou hua i te mahi matapae i roto i ia puranga.

Te Whakatau i ngā Raru Piripiri me te Moata Noa me te Paura PVA

Te Whakatika i te Kaha o te Here me te Wehenga

Nā te ngoikore o te kaha o te piri ka pakū te taera, ka wehe atu i te pakitara. He maha ngā wā ka kitea tēnei raruraru ina mahi koe me ngā papa matotoru, maeneene rānei. Kāore e taea e te piripiri te pupuri pai i te mata.Paura PVAKa whakatau tika i tēnei raruraru. Ka hangaia he whatunga pūmua i roto i te ranunga. Ka honoa e tēnei whatunga te āputa i waenga i te piripiri me te papa. Ka whakakīia ngā pūwero iti, ā, ka hangaia he hononga ā-ringa kaha.

Ka taea e koe te ine i te whakapainga o te kaha o te piri mā te whakamātautau māmā noa iho. Mā te whakamātautau whakataurite tika i waenga i te piripiri tāera tohutoro me te putanga kua whakarerekētia ka kitea ngā hua mārama. Kei roto i te piripiri tohutoro te 0.3% HPMC. Kei roto i te putanga kua whakarerekētia te 0.15% HPMC me te 0.5% PVA 17-88. Ka piki ake te kaha piri kume maroke i muri i ngā rā 28 mai i te 1.2 MPa ki te 1.5 MPa. He whakapainga 25% tēnā. Ka ārai tēnei kaha tāpiri i te wehewehenga, ā, ka noho haumaru ō tāera mō ngā tau. Kia whiwhi tonu ai koe i ēnei hua, me whai pūtake pono koe. Kōwhiria he Kaiwhakarato Haina pono, he paura PVA waipiro polyvinyl mō te Piripiri / Moata. Mā tēnei ka whakarite kia rite te mahi a ō puranga katoa.

Te Ārai i te Puehu Mata me te Tārai Kōura

Mā te puehu o te mata ka āhua ngoikore, ka āhua kore ngaio hoki te moata kua oti. Ka oma tō ringa ki runga i te mata ka kitea he paura wetewete. Ka puta tēnei raruraru ina kore e ranea te kaha here o te hanganga sima. Kāore ngā matūriki angiangi o te mata e piri tahi. Ka āraihia tēnei raruraru e te paura PVA. Ka hangaia he kiriata pakari i te wā e mārō ana te moata. Ka takai tēnei kiriata i ngā matūriki mata, ka mau ki te wāhi tika. Ka whakapai ake hoki te kiriata i te mātotoru o te mata. Ka whiwhi koe i tētahi mutunga maeneene, mārō e ātete ana ki te pakū. Ka noho pūmau te kiriata polymer ahakoa kua maroke rawa te moata. Kāore tō mata whakamutunga e memeha, e kore hoki e mimiti i roto i te wā.

Te Whakaiti i ngā Kapiti Whakaiti me te Whakapai ake i te Ngāwari

Ka puta ngā kapiti mimiti ina tere rawa te ngaro o te wai i roto i te moata. Ka whakawhāiti te whakapiri sima, ā, ka puta ngā kapiti i te taumahatanga. Ka ngoikore te hanganga o tēnei raruraru, ā, ka taea te tomo o te wai. Ka āwhina te paura PVA i a koe ki te karo i tēnei putanga. Ka whakapai ake i te pupuri wai i te wā e whakamaroke ana. Ka roa ake te noho mākū o te moata, ka whakaiti i te tūponotanga o te maroke tere. Ka tāpirihia hoki e te kiriata polymer te ngāwari ki te anga pakari. Ka taea e te moata ngāwari te neke me te papa. Ka taea e ia te whakahaere i ngā nekehanga iti me ngā huringa pāmahana me te kore e pakaru. Ka whiwhi koe i tētahi rauemi ngāwari ake e mahi pai ana i roto i ngā āhuatanga uaua.

Te Whakarei Ake i te Ātete Wai me te Pumau

Ka pakaru te moata noa i te roanga o te wā e te wai. Ko ngā huringa tio-rewa te mea tino kino. Ka uru te wai ki roto i te moata, ka tio, ka whānui, ka pakaru te hanganga. Me tiaki e koe tō mahi mai i tēnei momo whakaeke. Mā te paura PVA ka nui ake te ātete o tō moata ki te wai. Ko te kiriata polymer te ārai. Ka whakaitihia te nui o te wai ka taea te uru ki roto i te moata. Mā tēnei tiaki ka kaha te moata i roto i ngā huringa tio-rewa maha.

E whakaatu ana te ripanga i raro nei i te rerekētanga mārama o te mahi tio-rewa:

Ka taea e te moata kua whakarerekētia ki ngā tāpiringa polymer pēnei i te PVA te tu atu ki te 300 huringa me te kore e pakaru. Ka pakaru te moata tikanga i muri i te 50 ki te 100 huringa anake. Ka kitea te whakapainga nui o te pakari. Ko te tikanga ka roa ake tō mahi i ngā āhuarangi makariri. Ka whakaitihia hoki e koe te mōrearea o ngā whakatikatika utu nui i muri mai. Mō ngā hua pai rawa atu, tikina tō rauemi mai i tētahi Kaituku Haina pono, paura PVA polyvinyl alcohol mō te Piripiri/Moata. Ka pā tika te kounga o te paura PVA ki te pakari whakamutunga o tō ranunga.

Ngā Tohutohu Whakamahinga Whaihua mō te Paura PVA

Te Whiwhi i te Tauwehenga Ranunga Tika

Ko te ōwehenga tika oPaura PVAKo te ranunga maroke te mea e whakatau ana i ō hua whakamutunga. Me whakarerekē e koe te nui i runga i tō tono motuhake. Mō ngā piripiri taera, tāpirihia te 0.3% ki te 0.5% paura PVA mā te taumaha o te ranunga maroke katoa. Mā tēnei awhe ka hoatu ki a koe te taurite pai o te piri me te ngāwari. Mō ngā mea hanga me ngā pāreti, whakamahia te 0.2% ki te 0.4%. Mō ngā moata whakatikatika me ngā moata whakatika, whakanuia te nui ki te 0.5% ki te 1.0%. Mā ngā ōwehenga teitei ake ka pai ake te ātete ki te wai me te ngāwari. Ka taea e te nui rawa o te PVA te whakaroa i te wā whakatakoto. Whakamātauria he puranga iti i te tuatahi. Inehia te paura PVA me te tauine tika. Kaua e whakapae i te nui. Ko te tikanga o ngā ōwehenga ōrite he hua ōrite mō ia kaupapa.

Aratohu Whakaranu me te Whakamahinga Hipanga-i-te-Hipanga

Whāia ēnei mahi hei whakarite i tētahi moata, i tētahi piripiri rānei kua whakarerekētia e te PVA kounga teitei:

1. Tīmata ki tō ranunga maroke. Whakakotahitia te sima, te onepu, me ngā mea whakapūmau ki roto i tētahi ipu ma.

2. Tāpirihia te paura PVA ki ngā wāhanga maroke. Whakaohokia kia pai te horapa o te paura puta noa i te ranunga.

3. Inehia te wai e hiahiatia ana. Ko te nui e whakawhirinaki ana ki tāu tono me te momo PVA e whiriwhiria e koe.

4. Tāpirihia mārire te wai ki te ranunga maroke. Whakaranua tonutia mā te whakamahi i te mīhini whakaranu, mā te ringaringa rānei.

5. Whakaranua mō te 3 ki te 5 meneti kia whiwhi ai koe i te paraoa maeneene, ōrite. Tukua te ranunga kia okioki mō te 2 meneti.

6. Whakaohokia anō mō ​​te 1 meneti. Kua rite te ranunga hei whakamahi.

7. Tāpirihia te ranunga i roto i tōna wā mahi. He rite te roa o te ora o ngā ranunga kua whakarerekētia ki te PVA ki ngā ranunga paerewa.

8. Horoia ō taputapu ki te wai i muri tonu i te whakamahinga. He uaua ake te tango i te kiriata PVA maroke.

Ngā Whakatūpato Matua me ngā Hē Noa hei Ārai

He maha ngā hapa ka taea te whakakino i tō ranunga kua whakarerekētia ki te PVA. Āta karohia ēnei hapa noa kia whiwhi ai i ngā hua pai rawa atu:

· Kaua rawa e tāpirihia te paura PVA ki te wai i te tuatahi. Ka piri te puehu. Whakaranua te paura ki ngā kai maroke i te tuatahi.
· Kaua e nui rawa te wai e whakamahia. Ka memeha te kiriata pūmua i te nui o te wai. Ka whakaitihia te kaha whakamutunga me te ātete wai o tō moata.
· Kaua e whakaranua i roto i ngā āhuatanga tino wera, tino makariri rānei. Ka pāngia te whakarewatanga me te hanganga kiriata o te pūmua PVA e ngā pāmahana tino nui.
· Kaua e whakaranua te PVA ki ngā matū whakahāwea kaha, ki ngā matū waikura rānei. Ka taea e ēnei matū te whakaiti i te kaha o te polymer, ā, ka kore e pai tōna mahi.
· Penapenahia te paura PVA kia tika. Mā te haumākū nui ka mimiti te paura i te makuku. Ka puta he puranga mārō, he ngoikore te wairewa, ā, ka ngoikore te kaha o te piri. Me penapena te paura PVA ki te wāhi hauhautanga, maroke i waenga i te 5°C me te 30°C. Kia hiri tonu te takai. Whakamahia he whakamaroke hei tiaki atu. Mēnā ka kite koe i ngā puranga mārō, he kōwhai, he haunga rerekē rānei, kua pakaru te PVA. Kaua e whakamahia.

Mā te tikanga hangarau e whakamārama te hiranga o te rokiroki. Mā te haumākū nui ka mimiti te PVA i te makuku, ka pupuhi, ka ngaro hoki ngā āhuatanga miihini. Mā te haumākū iti ka maroke te rauemi, ka heke te ngāwari me te pakari. Mā te pāmahana teitei ka tere ake te pirau o te polymer. Mā te pāmahana iti ka pakarukaru. Mā te taiao whakahaeretia, pumau hoki ka tiakina te roa o te oranga me te mahi a tō paura PVA.

Te Rapu Paura PVA Kounga-Teitei mai i tētahi Kaiwhakarato Haina, paura PVA waipiro polyvinyl mō te Piripiri / Mota

Ko te kounga o tō paura PVA te mea e whakatau ana i te mahi whakamutunga o tō moata. Me hiahia koe ki tētahi kaiwhakarato pono. He kaiwhakarato pono o Haina, ka tukuna e te paura PVA waipiro polyvinyl mō te Piripiri / Moata te kounga pumau me te tuku pumau mō āu kaupapa.

Rapua ngā kaiwhakarato he tiwhikete kounga matua. E whakaatu ana ēnei tiwhikete kei te whai te kaihanga i ngā paerewa kounga me te haumaru tino pakari:

Me whai ngā pakihi i ngā ture REACH ina kaweake ana i te PVA ki te EU. Mā ēnei ture ka whakarite kia haumaru te matū mō te hauora tangata me te taiao. Me whai whakaaetanga te FDA mō te mākete o Amerika. Ka manatokohia e tutuki ana te hua i ngā paerewa haumaru me te whai hua.

He kaiwhakarato pai o Haina, ko te paura PVA polyvinyl alcohol mō te whakapiripiri/moata e whai ana hoki i ngā tikanga rokiroki me te whakahaere tika. Ka rongoatia e rātou te paura ki roto i tētahi taiao whakahaeretia. Ka whakamahia e rātou he takai hiri me ngā putea pepa kraft maha-paparanga me ngā raina PE. Ka whakamahia e rātou te whakahaere rawa FIFO hei whakarite i te hou. Ina whiwhi koe i tō uta, tirohia te takai mō ngā pakaru. Rokirokihia ngā putea ki roto i tētahi whare putunga hauhautanga, maroke. Puritia kia matara atu i te rā tika, i ngā pūtake wera, me ngā poke matū. Mā tēnei tiaki ka tiakina te roa o te wā me te mahi a te paura PVA.

Ka hurihia e te paura PVA ngā ranunga ngoikore, pakarukaru hei piripiri me ngā moata kaha, pakari. Ka whiwhi koe i te hononga pai ake, ka whakaitihia te pakaru, ka pai ake te ātete ki te wai. Ka eke te penapena utu ki te 20% mō ngā piripiri me te 22% mō te moata, me te pikinga mahi o te 15% me te 18%. Whakamahia ēnei tohutohu i tēnei rā. Kōwhiria he Kaituku Haina pono PVA paura polyvinyl waipiro mō te Piripiri / Moata.

Ngā Pātai Auau

Kia pehea te nui o te paura PVA me tāpiri atu ki taku ranunga moata?

Tāpirihia te 0.3% ki te 0.5%Paura PVAmā te taumaha o te ranunga maroke katoa mō ngā piripiri taera. Whakatikatikahia te nui i runga i tō tono motuhake.

Ka taea e au te whakaranu tika i te paura PVA ki te wai?

Kāo. Me whakaranu tonu te paura PVA ki ō kai maroke i te tuatahi. Mā te tāpiri ki te wai ka piri te paura, ā, ka whakaiti i te kaha o te hononga whakamutunga.

Kia pēhea te roa e taea ai te whakamahi i tētahi moata kua whakarerekētia ki te PVA?

Me whakamahi te ranunga i roto i te 30 ki te 60 meneti i muri i te whakarite. Ka rite tēnei wā ki te roa o te ora o te moata paerewa.