PVA lo - muaj pes tsawg leeg. Kev yam ntxwv ntawm lub nplaum

Yog hais tias koj xav tau ib yam dab tsi los lo ua ke, ua ntej ntawm tag nrho cov xav seb feem ntau cov kua nplaum PVA. Nws yog muaj nyob rau hauv txhua txhua lub tsev thiab chaw ua hauj lwm, yog siv tsis tsuas yog rau cov tsevneeg ntawm lub tiaj ntawv, tab sis kuj nyob rau hauv kev tsim kho kev lag luam. Thiab ua tsaug rau nws yooj yim qauv, tso cai rau koj yuav hloov txoj kev siv cov kev taw qhia tshwj xeeb additives.

Ib me ntsis keeb kwm

Rov qab nyob rau hauv 1912 lub German Klatt tswj kom tau tawm ntawm cov roj acetylene yas acetate. Tus tshiab neeg sawv cev nyob rau hauv lub polymerization los ua nplaum. Tab sis cia li ua ntej lub ntiaj teb no ua tsov ua rog II American Farben tsim ib tug coj mus muag ntau lawm ntawm PVA nplaum.

Plaub lub xyoos tom qab, Korean, kev ywj siab kev tshawb fawb tau txais Vinalon, uas yog raws li nyob rau hauv polyvinyl cawv. Txij li thaum PVA kua nplaum, tus nqi ntawm uas yog tsawg tshaj li ntau lwm yam adhesives, tau kis ib ncig ntawm lub ntiaj teb no.

Nyob rau hauv ib ncig ntawm lub qub Soviet Union mus rau loj zus tau tej cov PVA pib nyob rau hauv thaum ntxov seventies ntawm lub thib nees nkaum xyoo pua nyob rau hauv Severodonetsk (Lugansk cheeb tsam). Peb grandmothers tseem nco ntsoov tias ua ntej nyob rau hauv lub zog lub tsev kawm ntawv zaj lus qhia rau gluing ntawv siv cov kua nplaum uas muaj qhov txawv lub npe "acacia". Thiab nyob rau hauv lub nyuaj postwar xyoo ntawm lub nplaum npaj los ntawm lub tsev los yog ib tug siav qos hmoov txhuv nplej.

Thiab tam sim no peb yuav tsis xav txog tej yam yuav ua li cas nws yog ua tau rau dispense nrog PVA nplaum.

PVA lo: Specifications

Qhov no zoo kawg li thiab ua npaj txhais tau tias muaj ntau nqi zog. Nws nplaum zog yog 450 N / m. Vim nws yooj thiab uniformity nws yog thov nyob rau hauv ib tug nyias txheej uas yuav pom tom qab so qhuav. Ntawv tsuas PVA, yuav ua tau yooj yim bent, tom qab so qhuav nws tsis tawg.

Ib tug loj loj ntxiv rau yog uas tsis yog-tshuaj lom thiab uas tsis yog-flammability, uas nws yuav tsum tau siv rau cov me nyuam nyob rau hauv lub chav kawm ntawv thiab tom tsev. Tsis muaj zog tsw tso thaum lub sij hawm siv ntawm lub nplaum, yog harmless. Tag nrho cov hom ntawm cov kua nplaum, nyob rau hauv tas li ntawd mus rau lub PVA-K (sau), mas cia kom khov plaub lub sij hawm tsis poob ntawm lub zog. Yog hais tias tsim nyog, nws yog diluted nrog dej los yog lwm yam kuab tshuaj, e.g., acetone. Ziab lub sij hawm nyob rau hauv lub txheej thickness thiab tsis pub tshaj 24 teev.

Nws kua puag tso cai nkag teb chaws ntawm ntau yam additives nyob rau hauv lub PVA kua nplaum, cov muaj pes tsawg leeg uas yuav sib txawv li nyob rau hauv cov yam kev taw qhia. Yog li ntawd tus tshiab npaj cov kua nplaum cultivars tau raug tsim.

ntawm ntau yam PVA

Los ntawm qhov sib ntxiv ntawm txhab uas muaj lub PVA nplaum.

Peb sau cov ntsiab qhov chaw ntawm qhov kev siv:

• tsev neeg daim ntawv thov (tsevneeg dawb daim ntawv);
• siv rau kev kho (Wallpapering, linoleum);
• installation ntawm tej hub vuas;
• daim ntawv thov nyob rau hauv kev tsim kho kev lag luam raws li additives.

Hauj lwm ntawm lub hom lo

Sau PVA nplaum, uas muaj pes tsawg leeg tsis muaj tshuaj lom additives siv rau tsevneeg ntawv, cov me nyuam creativity. Vim hauv lub qhaj ntawv ntawm cov kuab tshuaj uas tsis yog dej, ua mob ab tsi rau cov me nyuam, nws yuav siv tau sab hauv tsev tsis muaj tog vaj tog tsev.

Cov feem ntau qib ntawm PVA - universal. Nws muaj ib tug broad Scope ntawm daim ntawv thov. Lawv yuav tsum tau glued Tuam Tshoj, lub khob thiab daim ntawv. Nws yog ntxiv rau cov primer, putty nyob rau hauv lub kho ntawm lub thaj chaw, yuav txhim khu kev losis tswvyim dabtsi zog.

Tsev neeg PVA siv rau wallpapering, hnyav daim ntawv. Nws yog yus muaj los ntawm siab te kuj.

PVA lo muaj super khov taub hau vim plasticizers yog li ntawd siv rau kho cov vuas, yas, hlau. Nws lub ntsiab daim ntawv thov - siv kev lag luam.

PVA lo joiner tau zoo dej kuj thiab yog siv rau cov kev txuas rau cov ntoo khoom.

Lwm nrov hom lo - PVA "Caij". Nws yog yus muaj los ntawm nws cov khoom teejtug uas yog instantaneous tsevneeg chaw tsis muaj kev ruaj ntseg rog nias. Nws yuav siv tau rau kho cov laminate, parquet thiab lwm qhov chaw.

Tshwj xeeb yog ib co ntawm ntau yam PVA

Tsev PVA yog siv tsis tau tsuas yog raws li ib tug self-nplaum, tab sis raws li ib tug ntxiv rau ntau yam ntawm lub tsev cov ntaub ntawv. Qhov tseeb lub npe ntawm qhov kev siv nplaum - lub dispersion ntawm polyvinyl acetate homopolymer. Vim cov kev ceev ntawm lub nyob tus yeees ntawm cov kev tsim kho nplaum yog thov nrog ib tug trowel. Ib tug tsevneeg chaw yuav tsum tau kom huv si ntxuav los ntawm hmoov av thiab degrease.

PVA kua nplaum, cov muaj pes tsawg leeg uas muaj xws li cov plasticizer yuav tsum tsis txhob yuav txias hauv qab no zero degrees, txwv tsis pub nws yuav poob nws lub zog. Nyob rau tib lub sij hawm, lub nplaum tsis muaj xws additives, mas te plaub caug degrees tsis tau poob nws nplaum zog tom qab yaj. Yog hais tias qhuav li zaj duab xis yog tsim, nws yuav tsum tau muab tshem tawm, thiab qhov loj tov kom huv si nyob rau hauv lub nplaum loj nto. Yuav kom tiv thaiv cov kua nplaum tau qhuav, nws yog muab cia rau hauv nruj nreem kaw ntim.

PVA lo: muaj pes tsawg leeg

Xav txog cov pib kawm uas yog ntxiv rau cov nplaum hloov nws nplaum zog. Cov raw cov ntaub ntawv yog ntxiv nyob rau hauv cov theem thiab muab mus rau hauv cov nram no pawg:

• adhesives;
• kuab tshuaj;
• plasticizers;
• fillers;
• hardeners;
• stabilizers.

Qhov ratio ntawm cov saum toj no Cheebtsam thiab imparts ntshaw zog mus rau ntau yam hom ntawm cov kua nplaum.

Adhesives, uas muaj xws li cov hmoov txhuv nplej thiab cob muaj pes tsawg leeg impart zog ntawm kev twb kev txuas.

Raws li cov kuab siv, acetone, benzene, thiab lwm tus neeg. Kev cog phooj cov dej kuj thiab tshav kub tsis kam, lawv txo cov lub dag lub zog ntawm cov nplaum txheej. Yog li ntawd, cov kuab ntsiab lus nyob rau hauv PVA yog tsawg heev.

Lub thiaj li hu ua plasticizers muab yooj nplaum pob qij txha. Yog li ntawd, daim ntawv glued PVA, yuav ua tau yooj yim bent tsis rhuav kev twb kev txuas. Plasticizer xws li glycerin, camphor roj.

Yuav kom txhim kho lub dag lub zog ntawm lub nplaum loj ntxiv cam: Kaolin, talc, cwj mem av dawb.

Yuav kom txo tau lub sij hawm ntawm solidification thiab hardening, siv me me iav additives, iav los yog hlau.

Yuav kom nce lub txee lub neej ntawm lub nplaum muaj pes tsawg leeg yog muab nyob rau hauv nws cov stabilizers uas muaj xws li styrene inhibitors, ntau yam nitro tebchaw.

PVA kua nplaum, tus nqi uas nyob rau ntawm cov lo lus uas thiab muaj ntawm tej yam Cheebtsam, tseem pom zoo raws li cov uas pheej yig tshaj thiab feem ntau pheej yig. Siv cov kev faib nplaum yog los ntawm 26 rubles ib kilogram. Nws yog tsim rau wallpapering. Universal PVA lo tias, "Zaj sawv", "Bolars" kim kim - los ntawm 65 rubles ib kilogram.

Thawj txoj kev ntawm kev siv PVA

Dhau li ntawm tus li ib txwm txoj kev ntawm kev siv PVA cov nplaum rau cov tsevneeg ntawv los yog thaum lub sij hawm kho, craftsmen nrhiav nws ntau thawj daim ntawv thov.

Piv txwv li, sib txuas gouache thiab PVA, yuav kos rau lub canvas los yog lwm qhov chaw. Nws puv tawm ib tug zoo lwm txoj rau kim roj los yog acrylic xim tsev. Vim cov kua nplaum gouache lus dag zoo rau cov ntaub ntawv uas yog cia ntev. Yog hais tias cov kev tshwm sim yog tsis nyiam nws, ces txhua yam yog yooj yim ntxuav tawm, thiab koj yuav rov qab pib dua.

Cov poj niam siv lo manicure. Nws yuav tsum muaj ntaub ntawv mus rau lub tes raws li ib lub hauv paus nyob rau hauv tus ntsia thawv polish nrog sparkles. Vim nws tsis yog-toxicity, nws ua mob ab tsi rau tus ntsia thawv thiab li no yuav muab tau yooj yim muab tshem tawm tsis muaj kev siv ntawm cov kuab tshuaj.

Yog hais tias koj thov nplaum rau lub cuticle nyob ib ncig ntawm tus ntsia thawv, koj yuav tsis ntshai hais tias cov xim muaj hlau tau txais nyob rau hauv daim tawv nqaij. Adhesive sawb nrog lacquer residues tam sim ntawd tshem tawm tom qab kom qhuav.

cia tej yam kev mob

Rau cia PVA nplaum muaj pes tsawg leeg uas Nkij los txuam rau volatile kuab tshuaj siv kaw ntim uas muaj nyob rau ntawm lub ntawm tsib mus rau kaum degrees.