Nini ezali ntina ya kofololo, kobima ya crème oyo ezali kofuluka mpe ba mesures na yango ya kopekisa?
Blooming ya pulvérisation, oyo eyebani mpe na kombo ya pulvérisation, ezali phénomène que complexe (solide to liquide) oyo ezali na kati ya caoutchouc non vulcanisé to vulcanizate ezali précipité na migration ya surface. Glaçage ezali problème ya qualité commune na production ya caoutchouc.
Analyse of causes: 1 Solubilité ya ba additifs ndenge na ndenge na caoutchouc ezali excessivement varié. soki solubilité ya ba additifs na caoutchouc ezali moke, plus probable ezali que ba additifs excessifs (c.a. Phénomène babengaka yango ko fleurir passif), atako ba matières oyo ya ko fleurir passif ezali mosika na saturé na caoutchouc.
2 Temperature change The solubility of additives in rubber varies with temperature. Under normal circumstances, the solubility is high when the temperature is high, and the solubility is decreased when the temperature is decreased. Since rubber products are usually used at room temperature, once the outside temperature is lower than room temperature, the content of some additives in the formulation will be close to the solubility and precipitated, resulting in blooming. Ndakisa, sapato ya caoutchouc oyo esalemi na eleko ya molunge ezali na makoki na tango ya botali na usine, kasi emonanaka ete ezali kofuluka na eleko ya malili.
3 Solubilité ya additif sous-soufre na caoutchouc ezali affecté na ba conditions ya durcissement. Kozua NR lokola exemple, na ba conditions ya vulcanisation, densité ya réticulation ezali ya monene, soufre libre ekitisami, probabilité ya injection ya soufre ekitisami, mpe ba opportunités ya ba addititifs ya ba throughtissions na ba diminutions, ba réductions ya ba dimensionnels; Soki te, na état ya soufre oyo ezali na se, densité ya réticulation ya réseau ezali relativement moke mpe probabilité ya ko fleurir emati en conséquence.
4 Bobali ya bobange elakisi ete structure ya réseau tridimensionnel ya vulcanizate ebebaka ndambo mpo na bopanzani ya bokangami, na yango kolembisa adsorption ya structure ya réseau mpe kobongisa ba additifs auxiliaires. makoki ya ba additifs ya migré na surface ememaka.
5 Tango caoutchouc oyo ezali na tension inégale esalemi na force ya libanda, mbala mingi esalaka concentration ya stress mpe ebukaka surface, e accélérer ba particules ya superabsorbant ya ebandeli ya agent auxiliaire, mpe esala pulvérisation na surface ya fissures. gel mpe e extend na périphérie".
6 Bopanzani ya ndenge moko te ya kopakola epesaka bopanzani ya ndenge moko te ya eloko ya bosangisi na kati ya caoutchouc, mpe ezali na additif localisé oyo eleki solubilité mpe esalaka ete ba mesures ya bobateli ya makila.) esalaka ete ezala na fololo.
(1) Dopage na SR: SR Solubilité ya ba auxiliaires ezali likolo koleka oyo ya NR, yango wana kosalela ba SR mosusu esalisaka mpo na kopekisa Blooming ya NR.
(2) Ba accélérateurs mpe ba agents anti-âge esalelami esika moko: soki kaka additif moko nde esalelami, motuya ezali moke mingi mpo na kozua effet, mpe soki motango ezali monene mingi, crème ezali responsable ya komonana. Yango wana, ba agents auxiliaires ebele ekoki kosalelama esika moko mpo na kozua effet mpe kokitisa motango.
(3) The use of different additives in the spray on the mutual interference constraints: When used together with different additives, sometimes there will be mutual interference and help inhibit the blooming, such as softener, ointment, reclaimed rubber, etc. have this function. In particular, auxiliaries with large relative molecular masses can penetrate into the short chains of rubber macromolecules and can effectively adsorb the Ba aides ya éjection facile.
(4) Kosimba ndelo ya likolo ya motango ya ba auxiliaires oyo ezali pete mpo na kosopela, mpe kosala ete motango ya ba auxiliaires ya pulvérisation ndenge na ndenge na formulation ezali na kati ya esika na yango ya solubilité.
(5) Kosangisa parking ya caoutchouc: Esengeli kotelemisa biloko ya caoutchouc na boumeli ya ngonga 8 te liboso ya kosala molangi, mpo ete agent compound ya ndenge nyonso ekoki kopalangana mobimba, mpe na ntango moko, esalisaka mpasi ya kati ya biloko ya caoutchouc epema, mpe nguya ezali ata, na bokatikati mpe na stable. Bopanzani ekoki kopekisa bopanzani ya ba particules{3}
(6) Salá ete ba vulcanizates ezala na ezalela ya vulcanisation .
(7) Strengthen the management of finished products, packaging, and storage conditions. The finished products should be sealed in plastic bags to prevent aging during contact with sunlight, oxygen, etc. during storage. Avoid storage at low temperatures. Causes of blooming of various substances: Sulfur yellow spray: Excessive amount of sulfur in rubber compound Insoluble sulfur in poor quality Sulfenamide accelerator poor quality Mixing or processing temperature is too high Reaction products: Excessive amount of anti-aging agent and its reaction product in the rubber compound: Excessive amount of parts in the rubber compound is stored for a long time Anti-ozone agent and its reaction product: Excessive quantities in the rubber compound The storage time is too long Fatty acid: Too much zinc stearate in rubber: Stearic acid and zinc oxide are added early and the mixing or processing temperature is higher. Calcium stearate: Free stearic acid in the Mixage ya dimensionnement na mayi ya refroidissement Réservoir ya mayi ya makasi cire (composants à partir ya formulation to ya mafuta): fraction ya masse excessive ya cire na mafuta Produit ya réaction eleki makasi ya agent anti-tar: Action retardée en raison ya ba températures ya mélange eleki mingi to ya traitement Avance: ba pièces ebombamaka molayi mingi. adhésif: Ba pièces ezali trop longues mpo na kobomba mpo na kobomba