CMC na-eji na ụlọ ọrụ seramiiki

Sodium carboxymethyl cellulose, English abbreviation CMC, seramiiki ụlọ ọrụ na-akpọkarị "sodium CMC", bụ ụdị anionic ihe, mere nke eke cellulose dị ka akụrụngwa, site kemịkalụ mgbanwe na ọcha ma ọ bụ ìhè odo ntụ ntụ. CMC nwere ezigbo solubility na enwere ike igbari ya ka ọ bụrụ ihe ngwọta doro anya na nke edo na ma mmiri oyi na mmiri ọkụ.

1. Okwu mmeghe nke CMCeji na ceramik

1.1 ngwa nke CMC na ceramik

1.1.1. Ụkpụrụ ngwa

CMC nwere usoro polymer linear pụrụ iche. Mgbe a na-agbakwunye CMC na mmiri, a na-ejikọta ìgwè hydrophilic ya (-Coona) na mmiri na-emepụta oyi akwa edozi, nke ji nwayọọ nwayọọ na-agbasasị mkpụrụ ndụ CMC na mmiri. A na-emepụta usoro netwọk n'etiti polymer CMC site na hydrogen bond na van der Waals Force, si otú a na-egosi ịdị n'otu. Enwere ike iji CMC akọwapụtara nke ọma dị ka ihe mgbakwunye, plasticizer na onye na-akwado billet na ụlọ ọrụ seramiiki. Ịgbakwunye CMC kwesịrị ekwesị na billet nwere ike ime ka ike nke billet dịkwuo elu, mee ka billet dị mfe ịmepụta, mee ka ike na-agbanwe agbanwe site na 2 ~ 3 ugboro, ma melite nkwụsi ike nke billet ahụ, iji meziwanye ogo ọnụego nke billet. ceramics, belata ego nke nhazi oge emechara. N'otu oge ahụ, n'ihi mgbakwunye nke CMC, a pụrụ imeziwanye ngwa ngwa nhazi nke akwụkwọ ndụ akwụkwọ ndụ akwụkwọ ndụ na mmepụta ume ike na-ebelata, na mmiri na billet nwere ike ikpochapụ ọbụna iji gbochie ihicha na cracking, karịsịa na nnukwu nha. nke billet n'ala na billet brik a na-egbu maramara, mmetụta ahụ pụtakwara ìhè. N'iji ya na ndị ọrụ na-eme ka ahụ dị ike, CMC nke nwere ahụ kpọmkwem nwere njirimara ndị a:

(1) obere usoro onunu ogwu: usoro onunu ogwu n'ozuzu na-erughi 0.1%, nke bu 1/5 ~ 1/3 nke ndi ozo na-ewusi ahu ike, ebe ike na-ehulata nke ahihia ndu doro anya na enwere ike ibelata onu ahia.

(2) ezigbo ọkụ ọkụ: mgbe ọkụ fọrọ nke nta ka ọ bụrụ ntụ, ọ dịghị ihe fọdụrụnụ, adịghị emetụta agba ndụ ndụ.

(3) na ezigbo nkwusioru: iji gbochie adịghị mma akụrụngwa na pulp mmiri ozuzo, nke mere na slurry ahụ gbasasịrị.

(4) Yiri nguzogide: n'ime usoro ịkụnye bọọlụ, yinye molekụla adịchaghị emebi emebi.

1.1.2. Usoro mgbakwunye

Ọnụ ego CMC n'ozuzu na billet bụ 0.03 ~ 0.3%, nke enwere ike gbanwee dịka mkpa dị n'ezie. N'ihi na slurry na ọtụtụ ogbenye akụrụngwa na usoro, CMC nwere ike kwukwara na bọl igwe nri na ala ọnụ na apịtị, ntị ka edo dispersion, ka ọ ghara isi ike igbari mgbe agglomeration, ma ọ bụ CMC nwere ike. A ga-edozi ya na mmiri na 1:30 iche iche wee tinye ya na igwe ihe igwe maka ịgwakọta 1 ~ 5 awa tupu egweri.

1.2. Ngwa nke CMC na glaze slurry

1.2.1 Ụkpụrụ ngwa

Glaze mado pụrụ iche TYPE CMC bụ ọmarịcha arụmọrụ stabilizer na ihe nkedo, nke ejiri seramiiki tile ala glaze na glaze elu, nwere ike ịbawanye ike nke glaze slurry na ahụ, n'ihi na slurry glaze dị mfe ọdịda na nkwụsi ike na-adịghị mma, yana CMC na ụdị niile. glaze ndakọrịta dị mma, nwere magburu onwe mgbasa na nchebe colloid, nke mere na glaze ahu nọ na nnọọ ike mgbasa. steeti. Mgbe agbakwunyere CMC, enwere ike imeziwanye esemokwu elu nke glaze, enwere ike igbochi mmiri ka ọ ghara ịgbasa site na glaze na ahụ, ịdị nro nke glaze nwere ike ịba ụba, ihe mgbagwoju anya na mgbaji na-akpata site na nkwụsị nke ike nke ahụ mgbe ọ gasịrị. Enwere ike ịzere ngwa glaze, ma enwere ike belata ihe ngosi pinhole nke glaze mgbe ịsachara.

1.2.2. Usoro na-agbakwụnye

Ọnụ ego nke CMC agbakwunyere na glaze na ala glaze sitere na 0.08 ruo 0.30%. Enwere ike ịhazi ya dabere na mkpa n'ezie. Nke mbụ, a na-akwado CMC n'ime ngwọta 3% nke mmiri mmiri. Ọ bụrụ na ọ dị mkpa ka ịchekwa ya ruo ọtụtụ ụbọchị, a ga-etinye ihe ngwọta ahụ n'ime akpa ikuku nwere ihe nchekwa kwesịrị ekwesị ma debe ya na obere okpomọkụ. Mgbe ahụ, a na-agwakọta ihe ngwọta ahụ nke ọma na glaze.

Ngwa 1.3 nke CMC na-ebipụta glaze

1.3.1, ebipụta glaze pụrụ iche CMC nwere ezi ndim ihe onwunwe na disperity na nkwụsi ike, ndị pụrụ iche CMC ịmụta ọhụrụ technology, ezi solubility, elu nghọta, fọrọ nke nta ọ dịghị insoluble, ma nwere elu shiee thinning na lubrication, mma nke ukwuu obibi glaze obibi akwụkwọ. ime mgbanwe, belata ihuenyo, ihe na-egbochi ihuenyo, belata oge netwọkụ, mgbe ị na-ebipụta ọrụ dị larịị, ụkpụrụ doro anya, ngbanwe agba dị mma.

1.3.2 Ọnụ ọgụgụ n'ozuzu nke ịgbakwunye glaze obibi bụ 1.5-3%. Enwere ike tinye CMC na ethylene glycol wee gbakwunye ya na mmiri iji mee ka ọ dị mma, ma ọ bụ 1-5% sodium tripolyphosphate na ihe agba nwere ike ikpokọta ọnụ, wee gbazee ya na mmiri, nke mere na ihe dị iche iche nwere ike gbazee na nke ọma.

1.4. Ngwa nke CMC na infiltration glaze

1.4.1 Ụkpụrụ ngwa

Penetration glaze nwere otutu soluble nnu, acid, na ụfọdụ ele mmadụ anya n'ihu penetration glaze pụrụ iche CMC nwere elu acid nnu na-eguzogide nkwụsi ike, na-eme ka penetration glaze na usoro nke ojiji na ọnyịnye ịnọgidesi ike viscosity, gbochie n'ihi mgbanwe nke viscosity, agba na. penetration glaze pụrụ iche CMC mmiri soluble, net permeability na mmiri njigide dị nnọọ mma, ịnọgide na-enwe nkwụsi ike nke soluble nnu glaze nwere otutu. Enyemaka .

1.4.2. Usoro mgbakwunye

Gbanyụọ CMC na ethylene glycol, ụfọdụ mmiri na ihe mgbagwoju anya, wee gwakọta nke ọma na ngwọta agba agbaze.

2.CMC kwesịrị ịṅa ntị na mmepụta seramiiki

2.1 Ụdị CMC dị iche iche na-arụ ọrụ dị iche iche na mmepụta seramiiki. Nhọrọ nke ọma nwere ike nweta ebumnuche nke akụ na ụba na arụmọrụ.

2.2. Na glaze na glaze na-ebipụta, ọ dịghị mkpa ịkwanye ngwaahịa CMC na ịdị ọcha dị ala, karịsịa na glaze na-ebipụta akwụkwọ, CMC dị ọcha dị elu na ịdị ọcha dị elu, a ghaghị ịhọrọ acid dị mma na nnu nnu na nghọta dị elu iji gbochie ripples na pinholes na. glaze. N'otu oge ahụ, nwekwara ike igbochi ojiji nke nkwụnye net, ogbenye larịị na agba na ndị ọzọ phenomena.

2.3 Ọ bụrụ na okpomọkụ dị elu ma ọ bụ glaze chọrọ ka etinye ya ogologo oge, a ga-agbakwunye ihe nchekwa.

3. Nyochaa nsogbu nkịtị nke CMC na mmepụta seramiiki

3.1. Mmiri mmiri nke apịtị adịghị mma ma ọ siri ike itinye gluu.

N'ihi viscosity nke CMC n'onwe ya, viscosity apịtị dị oke elu, nke na-eduga n'ihe isi ike nke pulping. Ihe ngwọta bụ ịhazigharị ego na ụdị nke coagulant, kwadoro usoro decoagulant ndị a1) sodium tripolyphosphate 0,3%; (2) sodium tripolyphosphate 0.1%+ sodium silicate 0.3%; (3) Sodium humate 0.2%+ sodium tripolyphosphate 0.1%

3.2. Glaze mado na mmanụ obibi dị gịrịgịrị.

Ihe kpatara ịhọrọ glaze tapawa na mmanụ obibi bụ ndị a1) glaze mado ma ọ bụ mmanụ obibi na-emebi site na microorganisms, nke mere na CMC daa. Ihe ngwọta ya bụ ịsacha akpa nke tapawa glaze ma ọ bụ mmanụ a na-ebipụta nke ọma, ma ọ bụ tinye ihe nchekwa dị ka formaldehyde na phenol. (2) N'okpuru mkpali na-aga n'ihu nke ike shear, viscosity na-ebelata. A na-atụ aro ka ịhazie ngwọta mmiri CMC.

3.3. Tapawa ntupu mgbe ị na-eji glaze obibi akwụkwọ.

Ihe ngwọta bụ iji dozie ọnụọgụ CMC, nke mere na viscosity na-ebipụta glaze dị oke, ma ọ bụrụ na ọ dị mkpa, gbakwunye obere mmiri na-akpali akpali.

3.4, igbochi netwọkụ, hichapụ ọnụ ọgụgụ nke oge.

Ihe ngwọta bụ imeziwanye nghọta na solubility nke CMC. Nkwadebe mmanụ na-ebipụta mgbe emechara 120 mesh sieve, mmanụ na-ebi akwụkwọ dịkwa mkpa ka ọ gafere 100 ~ 120 mesh sieve; Gbanwee viscosity glaze obibi akwụkwọ.

3.5, njide mmiri adịghị mma, mgbe ị na-ebipụta ntụ ọka n'elu, na-emetụta mbipụta ọzọ.

Ihe ngwọta bụ ịbawanye ụba nke glycerin na usoro nke ibipụta nkwadebe mmanụ; Gbanwee n'ọkwa dị elu nke nnọchi (dochie ezigbo edo edo), obere viscosity CMC iji kwadebe mmanụ obibi akwụkwọ.