Su ne dwumadie ahorow .
chloroprene rɔba (CR) ne ade titiriw a wɔde chloroprene rɔba a ɛbata ho, adhesive no betumi ayɛ nwini wɔ dan mu hyew mu, mfiase adhesive ahoɔden no yɛ kɛse yiye, ahoɔden a ɛwɔ hɔ a wɔde si hɔ ntɛmntɛm, a ɛkorɔn bonding ahoɔden, runhio a ɛkyɛn so, a wɔde di dwuma pii range of application Adhesive nso wɔfrɛ no enti, neoprene rubber adhesive nso wɔ din 'universal adhesive'. Neoprene rubber adhesive wɔ solvent-based, emulsion type ne solvent-free liquid type, solvent-based no mu a wɔakyekyɛ mu ayɛ no afrafra ne graft type. Nneɛma a wɔde afra no bi ne CR a ɛyɛ kronkron ne CR adhesives a ɛwɔ fillers, ne resin-modified CR adhesives. Graft type yɛ neoprene rɔba ne methyl methacrylate ne monomer solution graft copolymerization afoforo a ɛwɔ adhesive no mu. Mprempren, neoprene rɔba a wɔde aduru a wɔde hyɛ nneɛma mu a egyina solvent so no da so ara yɛ nea wɔde di dwuma kɛse, ɛsɛ sɛ wɔyɛ nneɛma bi de tew efĩ a awuduru wom so, a ɛne nneɛma a atwa yɛn ho ahyia ho ahwehwɛde ahorow hyia.
Nea edi kan no, neoprene rubber adhesive a wɔadi afra .
Neoprene rɔba a wɔde afrafra a wɔde afrafra no kyerɛ sɛ neoprene rɔba no denam (anaasɛ wɔmfa fra) a wɔde afra mu wɔ nnuru a wɔde afra mu, a wɔde resins, antioxidants, fillers ne nneɛma afoforo a wɔde ka ho ka ho.
AGEING Agent, Filler ne nneɛma afoforo a wɔde ka ho kɔ ade biako anaa abien a egyina aduru so a egyina ade a wɔde nkata so so.
1、 su ahorow .
(1), mfiase adhesive tumi, neoprene rɔba yɛ mmerɛw sɛ crystallize, adhesive coating ne drying stacking, ebetumi ayɛ instantaneous crystallization plus ne ne ne
Tackifier resin, a ɛkyerɛ tumi kɛse bi a ɛwɔ mfiase no. (2), ahoɔden a ɛwɔ hɔ a ɛyɛ ntɛmntɛm, neoprene adhesives no de wɔn ho to wɔn ankasa crystallization ne curing, CR crystallization ahoɔhare, bonding ntɛm ara akyi bond no wɔ bonding ahoɔden. . (4), nsɛm ho amanneɛbɔ a ɛko tia, ngo a ɛko tia, nsu a ɛko tia, nnuru a ɛko tia pa. (5) Adhesive layer no yɛ mmerɛw, ɛyɛ elastic na ɛko tia ahodwiriw ne wosow. (6), Draability pa, hann a ɛyɛ papa a ɛko tia, ozone a ɛko tia, wim onyin a ɛko tia, ogyaframa a ɛmma ogya ntumi nhyew. Ɛkame ayɛ sɛ rɔba ne dade a wɔde kyekyere nneɛma ho wɔ dan mu mfe 20 akyi bere a ɛkame ayɛ sɛ ahoɔden a ɛwɔ bonding no mu no so ntew. . . (9), ɔhyew a ɛko tia, awɔw a ɛko tia no nyɛ papa. (10), neoprene adhesive a egyina solvent so no mu dodow no ara wɔ awuduru ne efĩ kodu baabi.
Neoprene adhesive a wɔadi afra yɛ ade a wɔde nkata so a mfaso wɔ so kɛse, a wɔde di dwuma kɛse wɔ mfiridwuma mu nneɛma a wɔyɛ ne da biara da asetra mu. Titiriw no, wɔde di dwuma kɛse wɔ mfiridwuma mu nneɛma a wɔyɛ ne da biara da asetra mu, titiriw wɔ mpaboa, dan mu nneɛma, adansi, kar ne nnwuma afoforo a ɛwɔ dodow kɛse mu.
2.Nhyehyɛe .
Mixed neoprene rubber consists of neoprene rubber, tackifying resin, metal oxides, solvents, antioxidants, fillers, accelerators,
crosslinking agent ne nea ɛkeka ho.
I. Chloroprene rɔba .
Chloroprene rɔba a wɔsan frɛ no polychloroprene no yɛ 2-chloro-1,3 butadiene sɛ ade titiriw a wɔde yɛ nneɛma a wɔde yɛ aduru a wɔde yɛ aduru a wɔde yɛ aduru a wɔfrɛ no emulsion na ɛde elastomer bi bae.
Elastomer a ɔyɛ adwuma wɔ hɔ. Chloroprene rɔba yɛ fitaa anaa kɔkɔɔ flake anaasɛ den solid, a reversible crystallinity, adhesion pa, tensile ahoɔden a ɛkorɔn ne elongation. onyin a eye kyɛn so, ɔhyew, ngo ne nnuru a ɛko tia. Wim tebea a ɛko tia ne ozone a ɛko tia nyarewa no yɛ nea ɛto so abien wɔ ethylene propylene rɔba ne butyl rɔba ho. Ɔhyew a ɛko tia ne nitrile rɔba. Nneɛma pa a ɛko tia inorganic acid ne alkali corrosion. wɔ ogyaframa a ɛmma ogya ntumi nhyew no bi. Ɔhyew a ɛyɛ bɔne kakra no, anyinam ahoɔden a wɔde siw ano no nyɛ papa.
2, resin a wɔde hyɛ nipadua mu .
Tackifier resin yɛ ade titiriw a ɛwɔ solvent-based neoprene adhesive mu, a ebetumi ama ahoɔden a ɛka bom, adhesive su, ɔhyew a ɛko tia, nsu a ɛko tia ne onyin a ɛko tia no atu mpɔn.
Ɔbarima ne ɔbea nna ne onyin a wɔsɔre tia. Tackifier resins a wɔde di dwuma ne thermo-reactive alkyl phenolic resins, petroleum resins, terpene phenolic resins, terpene resins, rosin-modified phenolic resins, gumarone resins, rosin esters, poly a-methylstyrenenenee. Wɔn mu no, tert-butylphenol formaldehyde resin (2402 resin) na ɛwɔ nkɛntɛnso a eye sen biara. Ɛkame ayɛ sɛ tackifier resin nni nkɛntɛnso biara wɔ neoprene rɔba a ɛyɛ ahwehwɛ no so. Terpene phenolic resin yɛ thermoplastic resin a ɛnyɛ adwuma no betumi atrɛw adhesive retention bere no mu, na ama adhesive layer no ayɛ mmerɛw, gumarone resin nso bɛma neoprene adhesive no ayɛ .
Gumarone resins no nso ma neoprene adhesives ahoɔden no nya nkɔanim kakra. Chloroprene rɔba AF yɛ carboxylic acid CR, a ɛde adhesive bonding ahoɔden a wɔayɛ no si hɔ no ɔhyew a ɛko tia ntɛmntɛm, delamination resistance a ɛkorɔn, nanso, esiane sɛnea ɛyɛ adwuma nti, adhesive no mu nsu a ɛyɛ den wɔ storage process no mu no bɛkɔ soro, a efi crosslinking effect a ɛwɔ magnesium oxide no mu. Enti, wɔ AF neoprene adhesive ahosiesie mu sɛnea ɛbɛyɛ a wobenya viscosity a ɛyɛ papa a ɛyɛ den na ɛsɛ sɛ wɔde adwumayɛ a ɛkɔ akyiri ka ho ma ɛyɛ 2402 resin dodow a ɛdɔɔso, na ɛsɛ sɛ wodi kan yɛ magnesium oxide ne resin no yɛ adwuma na ama chelates atumi asiw magnesium oxide ne hydroxyl tẽẽ a ɛyɛ adwuma no ano na ama ahoɔden a ɛwɔ nhyehyɛe no mu no ayɛ kɛse.
3, dade a ɛyɛ oxides .
Metal oxides a ɛwɔ neoprene adhesives mu no di dwuma anan: acid a ɛtwetwe, aduru a ɛko tia aduan, vulcanizing agent, resin reactant. Bere kɔ so no, neoprene rɔba bɛma hydrogen chloride kakraa bi afi hɔ, ebetumi ama polymers atumi asɛe bio, na ɛbɛsɛe dade ne abɔde mu nhama, na ɛde dade mu oxide ahorow aka ho betumi atwe hydrogen chloride na amma akɔ so asɛe. Metal oxide a wɔtaa de di dwuma no yɛ zinc oxide ne magnesium oxide titiriw. Magnesium oxide wɔ adwuma a ɛma acid, pre-reaction, anti-scorch, vulcanization, ne nea ɛkeka ho no yɛ ade a ɛho nhia a ɛwɔ neoprene adhesive mu. Magnesium oxide ne resin pre-reaction betumi ama adhesive heat resistance no atu mpɔn na asiw delamination precipitation, magnesium oxide dosage wɔ pre-reaction effect ne adhesive properties so wɔ nkɛntɛnso, a magnesium oxide dosage kɔ soro, ɔhyew a ɛkɔ soro no kɔ soro, nanso nsu a ɛbata ho no so tew. Magnesium oxide a wɔde ka ho no betumi ama adhesive film no ayɛ ntɛmntɛm yiye ma ayɛ kusuu, na ebetumi ama nkitahodi ahoɔden a edi kan no atu mpɔn kɛse, a ebia efi magnesium oxide a ɛyɛ hann a ɛyɛ hyew anaasɛ magnesium oxide a ɛyɛ adwuma no. Magnesium oxide a ɛyɛ hare no yɛ powder fitaa a ɛnyɛ nea ɛyɛ nwene, enni hua na ɛnyɛ dɛ. Relative density 3. 58, melting point 28520C, boiling point 36000C a ɛwɔ mframa mu no tumi twe carbon dioxide ne nsu nkakrankakra ma ɛyɛ magnesium carbonate titiriw . Zinc oxide a wɔde ka chloroprene adhesive ho no betumi adi dwuma wɔ acid a wɔtwe no mu, nanso ɛno yɛ vulcanizing aduru no nyɛ botae efisɛ chloroprene adhesive no dodow no ara yɛ abɔnten so hyew a wɔde di dwuma wɔ nnuru a efi nnuru no mu ba no rentumi mma vulcanization mma, na mmom wɔ osu a ɛtɔ no ase a wɔkora so nso. Bere koro no ara mu no, zinc oxide betumi ama nsu a ɛbata ho no ayɛ turbid, sɛnea ɛbɛyɛ a ade a ɛbata ho no yɛ nnam, ɛte sɛ nea ɛyɛ nwunu a ɛnyɛ nea ɛyɛ nwunu, wɔde di dwuma ma ɛne polyurethane foam a ɛkyekyere no, zinc oxide bɛma nneɛma no anyin. Gyina atifi hɔ ntease ahorow so betumi atwa zinc oxide nokwarem no, amannɔne anyinam ahoɔden mfiri a CR adhesive mfaa zinc oxide nka ho, gluu no yɛ transparent na ɛnyɛ layered. Sɛ zinc oxide nni hɔ a, ebetumi nso anya ahoɔden a ɛho hia a ɛbɛkyekyere no, nanso ɛbɛma wɔakwati sɛ ɛbɛhyew adhesive refining no, na amma adhesive no ankɔ so atra hɔ bere tenten .
Yɛ gel ne precipitation, na ɛremma phase separation of the gluu. Sɛ neoprene adhesive bonding wɔ ɔhyew a ɛkɔ soro mu a, fa dodow ketewaa bi (1 ~ 3 copies) a ɛyɛ ultra-fine active zinc oxide no so wɔ mfaso.
4, antioxidant .
Sɛnea ɛbɛyɛ na wɔasiw rɔba a ɛporɔw ano, ama onyin a ɛko tia nyarewa no ayɛ kɛse, ama ɔsom no nkwa nna ayɛ tenten, sɛnea ɛbɛyɛ a afã horow a ɛka bom no bɛkɔ so atra hɔ akyɛ no, ɛho hia sɛ wɔde antioxidant a ɛfata ka ho. Antioxidant D effect a wɔde adi dwuma no ye yiye nanso ɛsɛ sɛ wogyae efĩ ne kokoram a ɛma obi nya kokoram no kɔ ODA, RD, 264, ne nea ɛkeka ho mmom. Antioxidant 2246 nso wobetumi de adi dwuma, nanso ɛbɛma kɔla a ɛsakra, wɔ chlorinated solvents mu no yɛ hann bruu, bruu kosi ahabammono nsakrae wɔ latex no mu yɛ pink.
5, aduru a wɔde siw ano .
Solvent yɛ solvent-based neoprene adhesive indispensable high amount of components, adhesive no adwumayɛ wɔ nkɛntɛnso a ɛho hia. chloroprene rɔba a ɛtumi nwura 9.2 ~ 9.4, a ɛtumi nwura mu wɔ benzene mu, toluene, dichloromethane, methylene chloride, methylene chloride, trichloromethane, 1, 1, 1-trichloroethane, carbon tetrachloride, trichhorode, a ɛyɛ cyclohele wɔ verhonene mu, a ɛyɛ cyclohele, buntone a ɛwɔ kyakyatow mu. Methyl acetate, isopropyl acetate, acetone, a entumi nsiw N-alkane, N-heptane, N-heptane, pɛtro a wɔde yɛ nneɛma, isopropanol ne nea ɛkeka ho. Nnuru a wɔmpɛ ne nea ɛnyɛ ano aduru nkutoo nyɛ neoprene rɔba a wɔapete, nanso ɛdenam afrafra fã a ɛfata so no, ebetumi nso ama neoprene rɔba apete. Solvent solubility a neoprene rɔba, adhesive viscosity, viscosity stability, adhesive wetting, viscosity retention period, mfiase adhesive tumi, bond ahoɔden, storage stability, low temperature resistance, flammability, explosiveness, toxicity, contamination, adhesive cost, etc..
6, filler .
Filler wɔ solvent-based neoprene adhesive no nni dwuma kɛse, efisɛ adhesive solvent dosage, low solid content, easy to precipitate, ntumi nni dwuma a wɔhwɛ kwan no. Sɛ wɔde superfine activated calcium carbonate di dwuma a, ebetumi ayɛ nea ɛyɛ den kɛse. Na ultrafine talcum powder, ultrafine silica, ultrafine aluminum silicate, ultrafine dɔte a wɔde di dwuma no, wobetumi ahwɛ so bere tiaa bi pɛ. Na awiei koraa no osu bɛtɔ.
7, crosslinking agent .
Crosslinking agent, a wɔsan frɛ no curing agent, betumi ama curing ahoɔhare a neoprene rɔba adhesive, atu mpɔn bonding ahoɔden, ɔhyew a ɛko tia, nsu a ɛko tia, ngo a ɛko tia, nnuru a ɛko tia, onyin a ɛko tia. a wɔtaa de di dwuma crosslinking agent ma polyisocyanate, te sɛ tetraisocyanate. Polyisocyanate crosslinking agent a ɛwɔ reactivity a ɛkorɔn, fa chloroprene adhesive 2 ~ 3H ka ho no betumi ayɛ crosslinked gel, sɛ ade abien a ɛbata ho, ansa na wɔde adi dwuma, afrafra na wɔde adi dwuma ntɛm ara.
8, a ɛma nneɛma yɛ ntɛmntɛm .
Promoter ne sɛ ɛbɛhyɛ vulcanization ho nkuran na ama ɔhyew a ɛko tia no atu mpɔn na ɛde nneɛma te sɛ vinylthiorea (NA-22), diethylthiorea (DE-TU), diphenyllhiorea (Promoter C), diaminodiphenylmethane, dodow a wɔde di dwuma wɔ ɔkwan a ɛkɔ akyiri so 0.25 ~ 1 kyɛfa. Nnipa binom a wohu wɔ chloroprene adhesive mu denam brn-type vulcanizing black a wɔde ka ho so no, betumi ama vulcanization no ayɛ ntɛmntɛm, adhesion no sua sen polyisocyanate vulcanization nhyehyɛe no na awuduru so tew kɛse.
