PVA mama - mejupụtara. Nka na ụzụ e ji mara nke nrapado

Ọ bụrụ na ị chọrọ ihe na-arapara ọnụ, nke mbụ na-eche ihe ndị kasị mama PVA. Ọ bụ dị na bụla obibi na ụlọ ọrụ, a na-eji ọ bụghị nanị maka bonding nke larịị akwụkwọ, ma na-na-ewu ụlọ ọrụ. Na ekele ya mfe Ọdịdị, enye gị ohere ịgbanwe na ojiji nke iwebata pụrụ iche nwekwara.

A obere akụkọ ihe mere eme

Back na 1912 na German Klatt jisiri nke gas acetylene vinyl acetate. The ọhụrụ gị n'ụlọnga na polymerization ghọrọ nnyapade. Ma dị nnọọ tupu Agha Ụwa nke Abụọ American Farben guzosie ike a azụmahịa mmepụta nke PVA gluu.

Mgbe afọ anọ gasịrị, Korean, na-eduzi onwe ha research enweta Vinalon, nke dabeere polyvinyl mmanya. Ebe ọ bụ na PVA gluu, na price nke bụ ihe na-erughị ọtụtụ ndị ọzọ adhesives, agbasawo gburugburu ụwa.

Na ókèala nke bụbu Soviet Union na uka mmepụta nke PVA malitere ná mbido seventies nke iri abụọ na narị afọ na Severodonetsk (Lugansk mpaghara). Anyị nne ochie ka na-echeta na tupu na ọrụ ụlọ akwụkwọ ahụ na-akụziri gluing akwụkwọ eji mama na pụrụ iche aha "acacia". Na na ike agha afọ nke nyagide kwadebere si n'ụlọ ma ọ bụ a esie nduku starch.

Na ugbu a anyị enweghị ike were ya otú ọ bụ ike rute na PVA gluu.

PVA mama: nkọwa

Nke a dị ịrịba ama ma na-ejikarịkwa n'aka nwere ọtụtụ ihe bara uru Njirimara. Ya nyagide ike bụ 450 N / m. Ruru ya mgbanwe na Ime Otu ọ na-etinyere na a mkpa oyi akwa nke na-aghọ-adịghị ahụ anya mgbe ihicha. Akwụkwọ sized PVA, nwere ike ịbụ mfe kpebisiri, mgbe ihicha ya anaghị agbaji.

A nnukwu gbakwunyere bụ ndị na-abụghị na-egbu egbu ma na-abụghị flammability, ikwe ka ọ na-eji maka ụmụaka na klas na n'ụlọ. Adịghị ike isi wepụtara n'oge ojiji nke nrapado, bụ adịghị njọ. All iche iche nke gluu, na mgbakwunye na nke PVA-K (agụmakwụkwọ), idi oyi ugboro anọ na-enweghị ọnwụ nke Njirimara. Ọ bụrụ na ọ dị mkpa, ọ na-jiriwo mmiri ma ọ bụ ndị ọzọ solvents, e.g., acetone. Ihicha oge na-adabere na oyi akwa ọkpụrụkpụ na anaghị gafere 24 awa.

Ya mmiri mmiri isi na-enye ohere ntinye nke dị iche iche nwekwara na PVA gluu, ndị mejupụtara nke dịgasị otú ke chọrọ direction. Ya mere, ndị ọhụrụ ejikarịkwa mama cultivars e mepụtara.

iche PVA

Site na mgbakwunye na nke gbasaa akporo nke PVA gluu.

Anyị depụta isi ebe nke were:

• ezinụlọ ngwa (hụ larịị akwụkwọ);
• eji maka idozi (Wallpapering, linoleum);
• echichi nke seramiiki taịl;
• ngwa na-ewu ụlọ ọrụ dị ka nwekwara.

Description of ụdị nke mama

Sọọsọ PVA nyagide, nke mejupụtara nwere dịghị nsí nwekwara eji maka bonding akwụkwọ, ụmụ creativity. N'ihi na enweghị solvents ọzọ karịa mmiri, bụ adịghị emerụ ụmụaka, ọ ga-eji n'ime ụlọ na-enweghị hoods.

The kasị ọkwa nke PVA - eluigwe na ala. Ọ nwere a sara mbara akporo ngwa. Ha nwere ike glued china, iko na akwụkwọ. Ọ na-agbakwunyere na primer, putty na mmezi nke ogige, na welie na-adịgide adịgide Njirimara.

Ezinaụlọ PVA eji maka wallpapering, oké akwụkwọ. Ọ e ji nnukwu ntu oyi eguzogide.

PVA mama nwere super viscous anọgidesi ruru plasticizers bụ ya mere na-eji maka nsogbu taịl, plastic, metal. Ya isi ngwa - ewu ụlọ ọrụ.

PVA mama joiner mma mmiri na-eguzogide ma na-eji maka na njikọ osisi ngwaahịa.

Ọzọ na-ewu ewu ụdị mama - PVA "oge". Ọ e ji ya onwunwe nke ozugbo bonding ebupụta enweghị nche agha na ịpị. Ọ ga-eji maka idozi na laminate, parquet na ndị ọzọ na-ebupụta.

Karịsịa ụfọdụ iche PVA

Building PVA na-eji ọ bụghị nanị dị a onwe-nrapado, ma dị ka a emeju a dịgasị iche iche nke ụlọ ihe. Ziri ezi aha nke ndị na-ewu nyagide - na dispersion nke polyvinyl acetate homopolymer. N'ihi na njupụta nke ihe ndị mejupụtara nke na-ewu nyagide na-etinyere na a trowel. A bonding ebupụta ga-juputara kpochara si ájá na degrease.

PVA gluu, ndị mejupụtara nke nke na-agụnye plasticizer ekwesịghị mma n'okpuru efu degrees, ma ọ ga-atụfu ya Njirimara. N'otu oge ahụ, nrapado anaghị nwere ndị dị otú ahụ nwekwara, nwere ike idi ntu oyi iri anọ degrees na-enweghị adịkwa ya nyagide Njirimara mgbe thawing. Ọ bụrụ na akpọnwụwo film a kpụrụ, ọ ga-ewepụ, na uka weere juputara na nyagide uka n'elu. Iji gbochie mama akpọnwụwo, ọ na-echekwara na tightly mechiri emechi containers.

PVA mama: mejupụtara

Tụlee isi mmiri na-agbakwunyere na nyagide ịgbanwe ya nyagide Njirimara. Ndị a ngwaọrụ na-kwukwara na mmepụta ogbo na ekewa ndị na-esonụ iche iche:

• adhesives;
• solvents;
• plasticizers;
• fillers;
• hardeners;
• stabilizers.

The ruru nke n'elu mmiri na-enye na-achọsi ike Njirimara iche iche nke gluu.

Adhesives, nke na-agụnye starch na resin mejupụtara nweta ume n'oge njikọ.

Dị ka ihe mgbaze eji, acetone, benzene, na ndị ọzọ. Leveraging mmiri na-eguzogide ma okpomọkụ na-eguzogide, ha belata ike nke nyagide oyi akwa. Ya mere, mgbaze ọdịnaya PVA bụ ntakiri.

The na-akpọ plasticizers enye mgbanwe nyagide nkwonkwo. Ya mere, akwụkwọ akụkọ glued PVA, nwere ike ịbụ mfe kpebisiri enweghị agbasa njikọ. Plasticizer gụnyere glycerin, camphor mmanụ.

Iji melite ike nke nyagide uka e kwukwara excipients: kaolin, talc, nzu.

Iji belata oge nke solidification na hardening, na-eji obere iko nwekwara, poselin ma ọ bụ metal.

Ntọt adị ndụ nke nrapado mejupụtara na-ndinọ ya stabilizers nke na-agụnye styrene inhibitors, iche iche Nitro ogige.

PVA gluu, na price nke na-adabere na-aga ma ọnụnọ nke ụfọdụ mmiri, ka ghọtara dị ka ndị dị ọnụ ala ma na kasị oké ọnụ. Construction nyagide bụ 26 rubles kwa kilogram. Ọ bụ ihe kwesịrị ekwesị n'ihi na wallpapering. Universal PVA mama akara, "Rainbow", "Bolars" ihe dị oké ọnụ - si 65 rubles kwa kilogram.

Original ụzọ nke iji PVA

E wezụga na-emebu ụzọ nke iji PVA nyagide maka bonding akwụkwọ ma ọ bụ n'oge mmezi, omenkà na-ahụ ya ọzọ mbụ ngwa.

Ka ihe atụ, na ijikọta gouache na PVA, nwere ike ise na kwaaji ma ọ bụ ndị ọzọ na-ebupụta. Ọ amama a magburu onwe ọzọ ka oké ọnụ mmanụ ma ọ bụ acrylic ágbá. N'ihi na mama gouache ụgha ọma nke ihe onwunwe na-nọ ogologo. Ọ bụrụ na n'ihi na-adịghị amasị ya, mgbe ahụ ihe niile na-adị mfe na-asa oyi, na i nwere ike na-amalite ọzọ.

Women iji mama maka ịkpụcha mbọ aka. Ọ nwere ike na-etinyere na mbọ ka a isi n'okpuru ntu Polish na sparkles. Ruru ya na-abụghị toxicity, ọ bụ adịghị emerụ ntu na otú ahụ nwere ike na-adị mfe wepụrụ na-enweghị ojiji nke solvents.

Ọ bụrụ na ị na-etinye nyagide na cuticle gburugburu ntu, i nwere ike na-atụ egwu na agba na-akawanye na akpụkpọ. Nyagide warara na lacquer residues ozugbo wepụrụ mgbe ihicha.

nchekwa ọnọdụ

Maka nchekwa PVA nyagide mejupụtara nke zuo ezu obodo solvents eji mechiri emechi akpa na e dere na ise ruo iri degrees.