Wiase nyinaa - Premier PVA: Polymer a ɛkorɔn - a ɛyɛ papa ma dwumadie ahodoɔ
Nnwuma Titiriw a Wɔde Di Dwuma
Wɔde PVA di dwuma kɛse wɔ ntama adwumayɛ mu. Ɛyɛ ade a ɛma asaawa yɛ kɛse, na ɛma ɛyɛ den na ɛyɛ mmerɛw bere a wɔrepam no. Eyi boa ma ntama a ɛpaapae no so tew na ɛma ntama no nyinaa yɛ papa. Sɛ wɔpam ntama wie a, ɛnyɛ den sɛ wobetumi ayi PVA afi hɔ denam ahohoro so, na ama ntama no anya ne mfitiase su ahorow no. Bio nso, wɔde PVA di dwuma wɔ ntama a wɔde kata so ne nneɛma a wɔde nkata so, na ɛma ɛbata ho yiye na ɛtra hɔ kyɛ.
Wɔ krataa adwumayɛ mu no, wɔde PVA di dwuma sɛ ade a wɔde kyerɛ nneɛma a ɛwɔ soro ne nea wɔde kyekyere nneɛma. Sɛ́ ade a ɛma krataa no yɛ kɛse no, ɛma nsu ntumi nkɔ, ahoɔden, ne sɛnea wotumi tintim krataa no tu mpɔn. Ɛyɛ afiri a ɛyɛ tratraa a ɛyɛ mmerɛw wɔ krataa no ani, na ɛmma ink ntrɛw na ɛma mfonini ahorow a wɔatintim no mu da hɔ yiye. Sɛ́ ade a wɔde kyekyere nneɛma no, wɔde PVA di dwuma wɔ nkrataa a wɔde akata so ne krataa a wɔde akata so no mu, na ɛma nea wɔde akata so no ne nea ɛwɔ ase no ntam no bata ho kɛse, na ɛma krataa a wɔde yɛ nneɛma no nyinaa ahoɔden ne nea ɛtra hɔ kyɛ no tu mpɔn.
PVA nso yɛ ade a ɛho hia wɔ adhesive adwumayɛ mu. Ɛwɔ nneɛma a ɛkyɛn so a ɛma nneɛma bata ho, titiriw ma nneɛma a ɛwɔ abon te sɛ nnua, krataa, ne ntama. PVA - a egyina adhesives so no ye nsuo - soluble, ɛnyɛ den sɛ wɔde bedi dwuma, na ɛwɔ bonding ahoɔden pa. Wɔde di dwuma kɛse wɔ adansi, dan mu nneɛma, ne nneɛma a wɔde kyekyere nneɛma mu de kyekyere nneɛma ahorow ho. Bio nso, wobetumi de nneɛma afoforo a wɔde ka ho ayɛ nsakrae wɔ PVA ntama mu de ama ɔhyew a ɛko tia, nsu a ɛko tia, ne nneɛma afoforo a ɛko tia no atu mpɔn na ama wɔadi ahwehwɛde pɔtee a wɔde di dwuma ho dwuma.
Wɔ coatings mu no, wɔde PVA di dwuma sɛ film - forming agent. Ɛyɛ film a ɛyɛ mmerɛw, ɛyɛ mmerɛw, na nsu ntumi nkɔ mu wɔ ade a wɔde akata so no ani, na ɛbɔ ho ban fi nsu, nnuru, ne UV mframa ho. Wɔde PVA - a egyina coatings so di dwuma kɛse wɔ nnua, dade, ne plastic a ɛwɔ soro ho banbɔ mu. Wobetumi nso de adi dwuma se primer anaase mfinimfini coating de ama adhesion ne adwumayɛ a ɛwɔ soro - coat no atu mpɔn.
Nsɛm a Wɔakyerɛkyerɛ mu
| Aguade no Edin | Polyvinyl Nsã a Wɔde Yɛ Adwuma | |||||||||
| Nnuru a Wɔde Yɛ Nnuru | (C2H4O)n (C2H4O)n | |||||||||
| Molekyul Mu Mu duru | 30,000–150,000 g/mol | |||||||||
| Mmaeɛ | Powder fitaa anaa granule | |||||||||
| Nsuo a Ɛyɛ Nwene | 230–240°C na ɛwɔ hɔ | |||||||||
| Muduro | 1.26–1.31 g/cm3 na ɛyɛ kɛse | |||||||||
| CAS NO | 9002-89-5 na wobɛkyerɛw | |||||||||
| HS Mmara no | 39053000 na ɛwɔ hɔ | |||||||||
| EINECS NO | 209-183-3 na ɛwɔ hɔ | |||||||||
| Abisadeɛ | Wɔde yɛ nneɛma a wɔde nkata nneɛma so, ntama, krataa a wɔde kata so, ne sini ahorow mu | |||||||||
Quality Control Krataa
| Aguade no Edin | Polyvinyl Nsã a Wɔde Yɛ Adwuma | ||||||
| ADEƐ | STANDARD NSƐM (%) . | SƆHWƐ BALUE (%) . | |||||
| Nsã a Ɛyɛ Fɛ%(mol/mol) . | 86.5～88.0 na ɛwɔ hɔ | 86. Nkyekyɛm | |||||
| Nsuo a ɛyɛ den mPa·s | 45.0～55.0 na ɛwɔ hɔ | 48. Ɔde ne nsa kyerɛɛ ne so | |||||
| Nsɛm a Ɛyɛ Basa | ≤5 na ɛwɔ hɔ | 3. 3. | |||||
| Ash Nsɛm a ɛwɔ mu% . | ≤0 na ɛyɛ | 0 | |||||
| pH bo a ɛsom | 5.0.0 | 5.0.0 | |||||
| Particle Size kɛse sen 10mesh | - . | 2. 2. | |||||
| Particle Size ketewaa bi sen 60mesh | - . | 2. 2. | |||||
Sɛ yɛbɛbɔ no mua a
Yɛn Global - Premier PVA no wɔ ahodoɔ ne ahodoɔ, a powders, granules, ne solutions ka ho, de di nnwuma ahodoɔ ahiadeɛ pɔtee ho dwuma. PVA grade biara wɔ su pɔtee te sɛ viscosity, degree of polymerization, ne alcoholysis degree, a wobetumi ayɛ no sɛnea adetɔfo ahwehwɛde te. Wɔde yɛn PVA nneɛma no ahyɛ nsuo - a ɛnyɛ nea mframa - ntumi nkɔ mu mu de hwɛ sɛ ɛyɛ papa na ɛgyina pintinn berɛ a wɔde sie na wɔde rekɔ. Sɛ́ ebia woyɛ ntama yɛfo wɔ Asia, krataa adwumayɛbea wɔ Europa, ntama yɛfo wɔ Amerika Atifi fam, anaasɛ adwumakuw a wɔde kata nneɛma so wɔ Amerika Kesee Fam no, yɛn Global - Premier PVA yɛ polymer a wotumi de ho to so na ɛyɛ papa a ebetumi aboa wo ma wo nneɛma no adwumayɛ ne ne su atu mpɔn.