ntụ ntụ latex enwere ike agbasabụ ude mmiri mmiri emezigharị nke enwetara site na ịgbasa ihicha nke ọnụọgụ abụọ ma ọ bụ ternary copolymer nke vinylacetase na ethylene tert carbonate VoVa ma ọ bụ alkene ma ọ bụ acrylic acid. Ọ nwere ezigbo redispersibility, na-agbasasị n'ime ude mmiri mgbe ọ na-akpakọrịta na mmiri, na kemịkalụ Njirimara ya na mbụ ude mmiri.
Nchoputa banyere uzuzu latex redispersible malitere na 1934 na IG Farbenindus AC na Germany polyvinylidene acid redispersible latex powder.
Na Japanese uzuzu latex. Mgbe Agha Ụwa nke Abụọ gasịrị, e nwere nnukwu ụkọ ọrụ na ihe owuwu ihe owuwu, na-amanye Europe, karịsịa Germany, iji ihe dị iche iche e ji ewu ụlọ mee ntụ ntụ iji kwalite ịrụ ọrụ nke ọma. N'ọgwụgwụ 1950s, Ụlọ ọrụ Hearst nke Germany na Wacker Chemical Company malitere mmepụta mmepụta nke uzuzu latex redispersible. N'oge ahụ, uzuzu latex na-agbanwe agbanwe bụ nke kachasị nke ụdị polyvinyl acetate, nke a na-ejikarị eme ihe maka nrapado osisi, mgbidi mgbidi, na ihe mgbidi ciment. Otú ọ dị, n'ihi njedebe nke PVac adhesive powder's high kacha kacha nta nkiri na-emepụta okpomọkụ, mmiri na-eguzogide mmiri na-adịghị mma, na alkali na-adịghị mma, ojiji ya nwere oke.
Site na mmepụta ihe na-aga nke ọma nke VAE lotion na VA/VeoVa lotion,redispersible emulsion ntụ ntụna opekempe ihe nkiri akpụ okpomọkụ nke 0C, ezigbo mmiri na-eguzogide na alkali iguzogide e mepụtara na 1960. Mgbe nke ahụ gasịrị, a na-akwalite ngwa ya na Europe, na ngwa ngwa ya ji nwayọọ nwayọọ gbasaa gaa n'ụdị ụlọ dị iche iche na nke na-abụghị nke ụlọ, mgbanwe ngwa ngwa agwakọta akọrọ, mkpuchi mgbidi na usoro imecha, mgbidi mgbidi na mkpuchi plasta ubi nke mkpuchi ntụ ntụ na ụlọ putty. .
N'ime ụlọ mmepụta nke redispersible latex ntụ ntụ N'ime afọ ndị na-adịbeghị anya, ọchịchọ makantụ ntụ latex redisperablena Europe na North America ejirila nwayọọ nwayọọ tolite. N'ụzọ megidere nke ahụ, site na iji nwayọọ nwayọọ na mmejuputa iwu nchekwa nchekwa ike ụlọ nke China na nkwalite siri ike nke ngwa ngwa agwakọta akọrọ maka ụlọ, ojiji nke latex ntụ ntụ na-agbanwe agbanwe na China Mainland abawanyela ngwa ngwa. Companieslọ ọrụ mba ofesi dị iche iche na ụfọdụ ụlọ ọrụ ime ụlọ ewepụtala oru ngo nke uzuzu latex na-agbanwegharị n'ofe mba ahụ. Dị ka ọnụ ọgụgụ ndị ọkachamara dị mkpa si kwuo, na 2003, mmepụta zuru ụwa ọnụ nke ntụ ntụ latex redispersible bụ 190000 ton, nke a na-ejikarị na Europe na North America. Oriri na ahịa ndị China erughị tọn 5000. Otú ọ dị, na 2007, oriri ahịa nke redispersible latex ntụ ntụ na China erutela tọn 450000, ndị isi na-ebubata bụ Dalian Chemical, Wacker si Germany, na National Starch si United States. A na-ebu amụma na site na 2010, ọchịchọ maka redispersible latex ntụ ntụ na China ga-eru 100000 tọn.
Ụdị ntụ ntụ latex na-agbanwe agbanwe:
Ụdị isi nke latex ntụ ntụ a na-emegharị ugbu a n'ahịa bụ:
Vinyl acetate na ethylene copolymer ntụ ntụ (Vac/E), ethylene na vinyl chloride, na montmorillonite ethylene ternary copolymer ntụ ntụ (E/Vc/VL), vinyl acetate na ethylene na elu fatty acid ethylene ternary copolymer ntụ ntụ (Vac/E/VeoVa) , vinyl acetate na elu fatty acid ethylene copolymer ntụ ntụ (Vac / VeoVa), acrylic acid na ethylene copolymer ntụ ntụ (A / S), vinyl acetate na acrylic acid, na elu fatty acid ethylene copolymer ntụ ntụ (Vac / A / VeoVa) Cool acid ethylene cool homopolymer roba ntụ ntụ (PVac), styrene butadiene copolymer roba ntụ ntụ (SBR), wdg.
Ngwakọta ntụ ntụ latex nwere ike agbasa:
* Uzuzu latex na-agbanwe agbanwe na-abụkarị ntụ ntụ, mana enwerekwa agba ole na ole ndị ọzọ dị. Ihe ndị mejupụtara ya gụnyere: * Polymer resin: nke dị na isi nke rubber powder particles, ọ bụkwa isi ihe enwere ike iji gbasasịa ntụ ntụ latex.
* Ihe mgbakwunye (ime): Eji ya na resin gbanwee resin.
* Ihe mgbakwunye (mpụga): Iji mee ka arụmọrụ nke ntụ ntụ latex gbasaa, a na-agbakwunye ihe ndị ọzọ.
colloid na-echebe:
Otu oyi akwa nke hydrophilic ihe ọbọp n'elu nke latex ntụ ntụ ntụ ntụ, nke ọtụtụ n'ime ha nwere ike ịmegharị.
Ihe nchebe colloid nke uzuzu latex gbasasịrị bụ mmanya polyvinyl.
Onye na-ahụ maka ihe na-egbochi caking: A na-eji ihe eji eme ihe dị mma nke a na-ejikarị egbochi ntụ ntụ rọba n'oge nchekwa na njem, yana iji mee ka ntụ ntụ rọba na-eruba (na-awụpụ na akpa akwụkwọ ma ọ bụ ụgbọ ala tankị)
Ọrụ nkeRDP:
* Uzuzu latex na-agbanwe agbanwe na-etolite ihe nkiri mgbe a gbasasịrị ma na-eje ozi dị ka nrapado nke abụọ iji welie ike ya;
* A na-etinye colloid nchebe site na sistemu ngwa agha (mmiri agaghị emebi ya mgbe emechara ihe nkiri, ma ọ bụ “mgbasa nke abụọ”:
* A na-ekesa resin polymer na-emepụta ihe nkiri dị ka ihe na-eme ka ọ dị ike n'ime usoro ngwa agha dum, si otú ahụ na-abawanye njikọ nke ngwa agha:
arụmọrụ ngwaahịa:
A na-eme ntụ ntụ latex na-agbanwe agbanwe site na ude mmiri polymer site na ihicha ịgba. Mgbe agwakọta ya na mmiri na ngwa ngwa, ọ na-emulsified na gbasasịa n'ime mmiri na-etolite a kwụsiri ike polymer ude ọzọ. Mgbe emechara ntụ ntụ latex redispersible ma gbasasịa n'ime mmiri, mmiri na-ekpochapụ, na-eme ihe nkiri polymer n'ime ngwa agha iji meziwanye arụmọrụ nke ngwa agha. Dị iche iche redispersible latex ntụ ntụ nwere dị iche iche mmetụta na akọrọ ntụ ntụ ngwa agha. Site n'ịkwalite nguzogide mmetụta, ịdịte aka, na iyi nguzogide nke ngwa agha, ihe ndị na-eme ka ntụ ntụ na-ejupụta oghere nke ngwa agha ahụ, na-amụba kọmpat ya ma na-emeziwanye nkwụsi ike ya. N'okpuru omume nke ndị agha mpụga, ọ ga-emepụta ntụrụndụ na-enweghị mmebi. Ihe nkiri nrapado polymer nwere ike ịdị na-adịgide adịgide na sistemu ngwa agha. Ịkwalite ịrụ ọrụ nke ihe owuwu ngwa agha.
Enwere mmetụta mmanye mmanye n'etiti ihe ndị dị na polymer adhesive powder, na-ekwe ka ngwa ngwa ngwa na-asọpụta n'adabereghị, ebe ntụ ntụ na-eme ka ikuku dị elu, p.rovid compressibility nke ngwa agha ma melite ya workability n'oge ewu. Imelite ike njikọ na njikọta nke ngwa agha.
Mgbe emechara ya na fimntụ ntụ latex redisperabledị ka ihe nkedo organic, ọ nwere ike ịmepụta ike dị elu na ike nrapado na ihe dị iche iche. Ọ na-arụ ọrụ dị mkpa na adhesion n'etiti ngwa agha na organic ihe (EPS, extruded ụfụfụ osisi) na ezigbo elu mkpụrụ. A na-ekesa ntụ ntụ nke na-emepụta ihe nkiri polymer dị ka ihe na-eme ka ihe na-eme ka ọ dị ike n'ime usoro ngwa agha dum, na-abawanye njikọ nke ngwa agha ahụ. Iji meziwanye nguzogide ihu igwe, nkwụsi ike na-ekpochapụ, ma gbochie mgbawa ngwa agha, redispersible latex ntụ ntụ bụ nke resin thermoplastic, nke nwere ezigbo mgbanwe ma nwee ike ime ka ngwa agha ahụ gbanwee na oyi na-ekpo ọkụ n'èzí na mgbanwe gburugburu ebe obibi, nke ọma na-egbochi ngwa agha mgbawa n'ihi ọdịiche okpomọkụ. . Site na imeziwanye hydrophobicity nke ngwa agha na ibelata mmịnye mmiri, enwere ike ịgbasa ntụ ntụ latex ka ọ mepụta ihe nkiri na pore na elu nke ngwa agha ahụ. A gaghị achụsasị ihe nkiri polymer nrapado mgbe ọ zutere mmiri, na-egbochi mbuso agha nke mmiri na imeziwanye ihe na-adịghị mma. Pụrụ iche redispersible latex ntụ ntụ nwere hydrophobic mmetụta nwere mma hydrophobic mmetụta. Na-emewanye ike na-ehulata na ike mgbanwe nke ngwa agha.
Ngwa ngwaahịa:
Sistemụ mkpuchi mgbidi mpụga:
Ngwakọta ejikọta: Gbaa mbọ hụ na ngwa agha ahụ jigidere mgbidi ahụ na bọọdụ EPS. Melite ike njikọta.
Ngwa ngwa plastering: Gbaa mbọ hụ na arụrụ arụ ọrụ, mgbape mgbape, ịdịte aka na nkwụsi ike nke sistemu mkpuchi.
Joint filler: The impermeability nke ngwa agha kagbochie ntinye mmiri. N'otu oge ahụ, ọ na-enwe ezigbo adhesion na nsọtụ nke tileti seramiiki, obere nkwụsịtụ, na mgbanwe.
Nrụzigharị tile na bọọdụ osisi plasta putty: Meziwanye ike na njikọta nke putty na mkpụrụ pụrụ iche (dịka taịlị seramiiki, mosaics, plywood, na ebe ndị ọzọ dị larịị), na-ahụ na putty nwere ezigbo mgbanwe iji mebie ọnụọgụ mgbasawanye nke mkpụrụ.
Masonry na plasta ngwa agha: Melite njide mmiri. Belata mfu mmiri na ihe ndị nwere porous.
Igwe anaghị egbochi mmiri nke simenti:Gbaa mbọ hụ na arụ ọrụ mgbochi mmiri nke mkpuchi ngwa agha, ebe ị na-enwekwa ezigbo nrapado na ala ala, ma melite ike mkpakọ na mgbanwe nke ngwa agha ahụ.
Ngwa agha ala na-eweda onwe ya:Gbaa mbọ hụ na nha nha modulus nke ngwa agha, yana nguzogide ya na-ehulata na mgbawa. Melite nguzogide eyi, ike njikọta, na njikọta nke ngwa agha.
Ngwa ngwa ihu:Melite ike elu nke mkpụrụ ahụ ma hụ na ike njikọ nke ngwa agha ahụ dị.
Ime na mputa mgbidi putty:Melite ike njikọta nke putty wee hụ na o nwere mgbanwe mgbanwe ụfọdụ iji mee ka nrụgide mgbasawanye na mkpirisi dị iche iche na-ebute site na ọkwa ntọala dị iche iche.Gbaa mbọ hụ na putty nwere ezigbo nguzogide ịka nká, enweghị ike ime, yana nguzogide mmiri.
Dozie ngwa agha:Gbaa mbọ hụ na ọnụọgụ mgbasawanye nke ngwa agha ahụ dabara na nke mkpụrụ, ma belata modul na-agbanwe nke ngwa agha ahụ. Gbaa mbọ hụ na ngwa agha ahụ nwere hydrophobicity zuru oke, ume iku ume na ike njikọ.
Ihe nrapado tile na ihe nchikota:Ihe nrapado tile: na-enye njikọ dị elu maka ngwa agha, na-enye mgbanwe zuru oke iji mebie ọnụọgụ mgbasawanye ọkụ dị iche iche nke mkpụrụ na taịlị seramiiki. Meziwanye ịdị mfe nke ịrụ ọrụ ihe owuwu ma melite arụmọrụ ọrụ
Oge nzipu: Ọktoba 08-2023