Ebifaananyi n’okukozesebwa .
Chloroprene Rubber (CR) kye kintu ekikulu ekisookerwako ekya chloroprene rubber adhesive, adhesive eyinza okunnyogoga mu bbugumu ku bbugumu erya bulijjo, empalirizo y’okwesiiga esooka nnene nnyo, amaanyi g’okutandikawo amaanyi ag’amangu, ag’okukwatagana okw’amaanyi, omulimu omulungi okutwalira awamu, okukozesa enkola nnyingi, okusiba, okusiba, amaliba, amaliba, obuveera, obuveera. Chloroprene Rubber adhesive era eyitibwa n’olwekyo, neoprene rubber adhesive era erina erinnya lya 'universal adhesive'. Neoprene rubber adhesive erina solvent-based, emulsion type ne solvent-free liquid type, solvent-based egabanyizibwamu ekika ekitabule n’eky’okusimba. Ebitabuddwa mulimu ebizigo ebirongoofu ebya CR n’ebizigo ebizijjuza, wamu n’ebizigo bya CR ebikyusiddwa resin. graft type ye neoprene rubber ne methyl methacrylate n’ebirala monomer solution graft copolymerization y’ekizigo. Mu kiseera kino, ekizigo kya neoprene adhesive ekisinziira ku solvent kikyali kisinga okukozesebwa, ebikolwa birina okukolebwa okukendeeza ku bucaafu obw’obutwa, nga bikwatagana n’ebyetaago by’obutonde.
Ekisooka, ekyesiiga kya neoprene rubber eky’ekika kya neoprene .
Ekizigo kya neoprene ekitabuddwa kitegeeza nti omupiira gwa neoprene nga gutabula (oba nga tegutabula) gusaanuuse mu mutabula gw’ebiziyiza, okugattako resini, antioxidants, fillers n’ebirungo ebirala.
Agent agent, filler n’ebintu ebirala ebigattibwa mu kitundu ekimu oba ekyesiiga eky’ekitundu kimu oba eky’ebitundu bibiri.
1、 Ebifaananyi .
(1), empalirizo y’okusiiga esooka, omupiira gwa neoprene kyangu okufuuka ekiristaayo, okusiiga n’okukala stacking, kiyinza okuba crystallization ey’akaseera .
Tackifier resin, nga kiraga empalirizo ennene ey’okunyweza esooka. (2), Amaanyi g’okuteekawo ebizigo eby’amangu, eby’ekika kya neoprene byesigamye ku sipiidi yaabyo ey’okufuuka ekiristaayo n’okuwonya, CR crystallization speed, bonding amangu ddala nga bond erina amaanyi agamala ag’okukwatagana. (3), amaanyi g’okukwatagana aga waggulu, obutafaali obuyitibwa crystallinity obw’amaanyi obwa neoprene rubber, amaanyi g’okukwatagana, era bwe kityo amaanyi ag’okukwatagana aga waggulu ag’ekyesiiga kya Cr. (4), okuziyiza emikutu emirungi, okuziyiza amafuta, okuziyiza amazzi, okuziyiza eddagala okulungi. (5) Omuguwa ogw’okusiiga gugonvu, gunyirira era gugumira okukubwa n’okukankana. (6), okuwangaala okulungi, okuziyiza ekitangaala ekirungi ennyo, okuziyiza ozone, okuziyiza okukaddiwa mu bbanga, okulwawo kw’ennimi z’omuliro. Okukwatagana kwa kapiira n’ebyuma mu myaka 20 egy’omunda oluvannyuma lw’amaanyi g’okukwatagana kumpi tekikendeera. (7), enkozesa ez’enjawulo, ebyuma n’ebintu ebitali bya kyuma birina okukwatagana okulungi, naddala ebintu eby’enjawulo ebiyungiddwa ku birala, ebizigo ebirala ebisinziira ku kapiira tebiyinza kugeraageranyizibwa. (8), kyangu okukozesa, oluvannyuma lw’okukala ggaamu, oluvannyuma lw’okukwatagana, okukwatagana amangu awatali kunyigirizibwa okumala ebbanga, osobola okuwona ku bbugumu ery’ebweru. (9), Okuziyiza ebbugumu obubi, okuziyiza ennyonta si kirungi. (10), ekisinga ku kiziyiza kya neoprene ekisinziira ku kizimbulukusa kirina obutwa n’obucaafu obugere.
Mixed neoprene adhesive ye adhesive ey’omugaso ennyo, ekozesebwa nnyo mu kukola amakolero n’obulamu obwa bulijjo. Naddala ekozesebwa nnyo mu kukola amakolero n’obulamu obwa bulijjo naddala mu kukola engatto, ebikozesebwa mu nnyumba, okuzimba, emmotoka n’amakolero amalala nga mulimu ssente nnyingi.
2.Okuwandiika .
Omupiira gwa neoprene ogutabuliddwamu gulimu omupiira gwa neoprene, tacking resin, ebyuma oxides, solvents, antioxidants, fillers, acelerators,
Crosslinking agent n'ebirala.
I. Omupiira gwa chloroprene .
Chloroprene Rubber, era amanyiddwa nga polychloroprene, ye 2-chloro-1,3 butadiene nga ekintu ekikulu ekigimusa nga emulsion polymerization era nga kivaamu ekika kya elastomer.
Elastomer. Chloroprene rubber ye njeru oba ya kyenvu oba ekikalu ekikaluba, nga kiriko crystallinity ekyukakyuka, okunywerera okulungi, amaanyi g’okusika amangi n’okuwanvuwa. Okukaddiwa okulungi, ebbugumu, amafuta n’eddagala okuziyiza. Obugumu bw’obudde n’okukaddiwa kwa ozone bukwata kyakubiri ku ethylene propylene rubber ne butyl rubber. Okuziyiza ebbugumu n’omupiira gwa Nitrile. Okuziyiza obulungi asidi atali wa kiramu n’okukulukuta kwa alkali. Alina diguli ezimu ez’okuziyiza ennimi z’omuliro. Okuziyiza ebbugumu erisingako katono, okuziyiza amasannyalaze si kulungi.
2, Tacking resin .
Tackifier resin kitundu kikulu nnyo mu solvent-based neoprene adhesive, ekiyinza okulongoosa amaanyi agakwatagana, adhesive properties, heat resistance, water resistance and aging resistance.
Okwegatta n'okukaddiwa okuziyiza. Tackifier resins ezikozesebwa ze thermo-reactive alkyl phenolic resins, resins za petroleum, terpene phenolic resins, terpene resins, rosin-modified phenolic resins, gumarone resins, rosin eSters, poly a-methyrenestyrene ands on. Mu byo, tert-butylphenol formaldehyde resin (2402 resin) y’esinga okukola. Tackifier resin kumpi talina kye kikola ku crystallinity ya neoprene rubber. Terpene phenolic resin ye resin etali ya kukola thermoplastic esobola okugaziya ekiseera eky’okusigala nga yeesiiga, n’okufuula adhesive layer okugonvuwa, gumarone resin nayo ejja kufuula neoprene adhesive .
Ebiwujjo bya gumarone nabyo biwa okweyongera okutono mu maanyi g’ekiyungo ky’ebizigo bya neoprene. Chloroprene Rubber AF ye carboxylic acid CR, nga n’amaanyi g’okukwatagana ag’okusiiga agalongooseddwa gateekebwawo okuziyiza ebbugumu okw’amangu, okuziyiza okusalako okw’amaanyi, naye, olw’okuddamu kwakwo, obuzito bw’ekyesiiga mu nkola y’okutereka bujja kulinnya, ekiva ku nkola y’okusalasala (crosslinking effect) ya magnesium oxide. N’olwekyo, mu kutegeka AF neoprene adhesive okusobola okufuna okutebenkera okulungi okw’obuzito n’okukola okujjuvu kulina okugattibwa ku muwendo ogumala ogwa 2402 resin, era magnesium oxide alina okusooka okukola n’ekiziyiza okukola chelates kiyinza okuziyiza magnesium oxide ne hydroxyl direct reaction n’okwongera ku bunywevu bw’okubumbulukuka kw’ebbugumu n’okuziyiza okubuguma kw’ensengekera y’ensengekera.
3, ebyuma oxides .
Okisayidi z’ebyuma mu bizigo bya neoprene zirina emirimu ena: Acid Absorber, Anti-Scorch Agent, Vulcanizing Agent, Resin Reactant. Ekiseera bwe kinaagenda kiyitawo, neoprene rubber ejja kufulumya trace amounts of hydrogen chloride, esobola okutumbula okwongera okuvunda kwa polymers, era ejja kuvunda ebyuma n’ebiwuzi eby’obutonde, okugattako ebyuma oxides bisobola okunyiga hydrogen chloride okwewala okuvunda kugenda mu maaso. Okisayidi z’ebyuma okutwalira awamu ezikozesebwa zisinga kuba zinc oxide ne magnesium oxide. Magnesium oxide alina omulimu gw’okunyiga asidi, pre-reaction, anti-scorch, vulcanization, etc. Kitundu ekiteetaagisa eky’okusiiga neoprene adhesive. Magnesium oxide ne resin pre-reaction bisobola okulongoosa okuziyiza ebbugumu eryesiiga n’okuziyiza okutonnya kw’okusalako, magnesium oxide dosage ku pre-reaction effect ne adhesive properties zirina impact, nga magnesium oxide dosage yeeyongera, amaanyi g’ebbugumu amangi geeyongera, naye okutebenkera kw’amazzi aganyweza kukendeera. Okwongerako magnesium oxide kisobola bulungi okwanguya firimu eyesiiga okukala, era kiyinza okulongoosa ennyo amaanyi g’enkolagana agasookerwako, ekiyinza okuba nga kiva ku kitangaala ekifukibwa magnesium oxide oba active magnesium oxide. light magnesium oxide ye pawuda ow’ekika kya amorphous enjeru, tewunya ate nga tewooma. Relative density 3. 58, ekifo ekisaanuuka 28520C, ekifo ekibuguma 36000C mu mpewo kisobola mpolampola okunyiga kaboni dayokisayidi n’amazzi okukola magnesium carbonate omusingi . Zinc oxide ayongeddwa ku chloroprene adhesive esobola okukola kinene mu kunyiga asidi, naye ekyo kirungo ekifuula enseenene tekirina kye kigendererwa kubanga chloroprene adhesive esinga kuba ya bbugumu ery’ebweru nga tukozesa omunnyogovu olw’eddagala terikola vulcanization, wabula ne mu kutereka wansi w’ekitonnyeze. Mu kiseera kye kimu, zinc oxide esobola okufuula amazzi ag’okusiiga okufuuka agatunfuufu, olwo firimu eyesiiga ebeere nga ekwata, ng’erabika ng’ekalu obutakala, ekozesebwa okusiba ekifuumuuka kya polyurethane, zinc oxide ejja kutumbula okukaddiwa kw’ekintu. Okusinziira ku nsonga ezo waggulu zisobola okusazaamu zinc oxide Mu butuufu, ebyuma by’amasannyalaze eby’ebweru ebirina CR adhesive tebiyongeddeko zinc oxide, sigiri ya bulambulukufu era teriko layeri. Awatali zinc oxide nayo esobola okutuuka ku maanyi ag’okukwatagana agetaagisa, naye era okwewala okwokya okulongoosa okw’okusiiga, okuziyiza ekisiiga mu kutereka okumala ebbanga eddene .
Okukola gel n’enkuba, era tekijja kuleeta kwawula mu phase kwa ggaamu. Singa ekiyungo ky’okusiiga eky’omubiri ekiyitibwa neoprene mu kukozesa ebbugumu eringi, ssaako akatundu akatono (1~3 kkopi) aka ultra-fine active zinc oxide kya mugaso.
4, eddagala eriziyiza obuwuka obuleeta obulwadde .
Okusobola okuziyiza okuvunda kwa kapiira, okutumbula obuziyiza obukaddiwa, okuwanvuya obulamu bw’okuweereza, okukuuma obuwangaazi bw’ebitundu ebiyungiddwa, kyetaagisa okwongerako eddagala eriziyiza obuwuka obuleeta obulwadde. Effect ya antioxidant D ekozesebwa nnungi nnyo naye okucaafuwaza n’okuleeta kkansa kulina okusuulibwa ku ODA, RD, 264, n’ebirala mu kifo ky’ekyo. Antioxidant 2246 nayo esobola okukozesebwa, naye ejja kukola ekintu ekikyusa langi, mu chlorinated solvents is light blue, blue to green changes in the latex is pink.
5, ekizimbulukusa .
Solvent ye solvent-based neoprene adhesive indispensable omuwendo omunene ogw’ebitundu, omulimu gw’okusiiga gulina kinene kye gukola. Chloroprene rubber solubility number of 9.2 ~ 9.4, soluble in benzene, toluene, dichloromethane, methylene chloride, methylene chloride, trichloromethane, 1, 1, 1-trichloroethane, carbon tetrachloride, trichloroethylene, butanone, etc., slightly soluble in cyclohexane, ethyl acetate, Methyl acetate, isopropyl acetate, asetoni, etasaanuuka mu n-alkane, n-heptane, N-heptane, petulooli w’ekizimbulukusa, isopropanol n’ebirala. Ebiziyiza ebitaagaliza n’ebitali biziyiza byokka si kapiira ka neoprene akasaanuuse, naye okuyita mu kitundu ekituufu eky’okutabula nakyo kisobola okusaanuuka neoprene rubber. solvent solubility of neoprene rubber, adhesive viscosity, okunyweza obuzito bw’obuzito, okufukirira okwesiiga, amaanyi g’okunyweza obuzito, amaanyi g’okwesiiga agasooka, sipiidi y’okukala, amaanyi g’okukwatagana, okutebenkera kw’okutereka, okuziyiza ebbugumu eri wansi, okumyansa, okubwatuka, okukosa okunene.
6, ekijjuza .
Filler mu solvent-based neoprene adhesive tekozesebwa nnyo, kubanga adhesive solvent dosage, low solid content, easy to precipitate, tesobola kukola kifo kisuubirwa. Singa superfine activated calcium carbonate ekozesebwa, kiyinza okuba nga kinywevu. Era okukozesa butto wa ultrafine talcum, ultrafine silica, ultrafine aluminium silicate, ebbumba erya ultrafine liyinza okukuumibwa okumala akaseera katono nga tekyukakyuka. era okusembayo wajja kubaawo enkuba.
7, Agent w’okuyunga .
Crosslinking agent, era emanyiddwa nga curing agent, esobola okwanguya sipiidi y’okuwonya eya neoprene rubber adhesive, okulongoosa amaanyi g’okukwatagana, okuziyiza ebbugumu, okuziyiza amazzi, okuziyiza amafuta, okuziyiza eddagala, okuziyiza okukaddiwa. Ekirungo ekitera okukozesebwa okuyunga ku polyisocyanate, nga tetraisocyanate. Polyisocyanate crosslinking agent with high reactivity, ssaako chloroprene adhesive 2~3h esobola okusalasala gel, nga adhesive ey’ekitundu bibiri, nga tebannaba kukozesa kuteeka, kutabula na kukozesa mangu.
8, Accelerator .
Promoter kwe kutumbula vulcanization okulongoosa okuziyiza ebbugumu n’okugattako ebintu, nga vinylthiourea (NA-22), diethylthiourea (de-tu), diphenylthiourea (promoter C), diaminodiphenylmethane, dosage ya general 0.25 ~ 1 share. Abantu abamu abasangibwa mu chloroprene adhesive nga bongerako BRN-type vulcanizing black, basobola okwanguya vulcanization, adhesion is not less than polyisocyanate vulcanization system era obutwa bukendeera nnyo.
