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Agent de vieillissement en caoutchouc oyo basalelaka mingi .

May 24, 2019

1, agent anti-âge ya amine, agent anti-âge ya amine esalelamaka mingi mingi mpo na kopekisa vieillissement ya oxygène thermique, vieillissement ya ozone, vieillissement ya fatigue mpe oxydation catalytique ya ions ya métal lourd, effet protecteur ezali particulièrement.Inconvénient na yango ezali pollution, oyo ekoki kokabolama lisusu na:

A, phenylnaphthylamine, lokola anti-A to anti-A, agent anti-âge J to D,PBNA ezali agent anti-âge ya kala, mingi mingi esalelamaka mpo na kopekisa bobange ya oxygène thermique mpe bobange ya kolɛmba, mpo na toxicité ya ntina, lolenge oyo ya anti-âge na mikili ya bapaya esalelamaki mingi te.

B, ketone amine kind of aging agent, can give diene kind of rubber very good heat resistance oxygen aging performance, in some cases give very good flexor cracking resistance performance, but very little inhibition of metal ions catalytic oxidation and ozone aging function.The most commonly used variety is BLE.Anti - aging RD. Anti - aging AW not only has the function of an antioxidant, but often used as an Agent ya oxygène anti - odeur.

C. Ba dérivés ya diphénylamine, oyo ekokani to moke koleka ba polymères dihydroquinoline na kopekisa bobange ya molunge, ekokani na DD tango esalelami lokola ba antioxydants.kasi effet ya protection na vieillissement ya fatigue ezali na se koleka oyo ya suka.

D. Ba dérivés ya p-phenylenediamine, lolenge oyo ya agent anti-âge ezali kosalelama mingi na tango oyo na industrie ya caoutchouc.Bakoki kopekisa bobange ya ozone, bobange ya kolɛmba, bobange ya oxygène thermique mpe oxydation ya catalytique ya ion ya métal ya biloko ya caoutchouc.(e. uop, uop788). Surtout tango paraffine ezali te na performance ya vieillissement ya ozone statique, mpe ezali na inhibition ya malamu ya vieillissement oxygène thermique.Kasi ezali na tendance ya ko promouvoir kozika ya Coke.

Bosangisi ya biloko oyo na alkyle aryl p-phenylenediamine ekoki kobatela malamu na bobange ya ozone na nse ya makambo ya statique mpe ya dynamique.Na bosolo, dialkyl p - phenylenediamine esalelamaka ntango nyonso elongo na alkyl aryl p - phenylenediamine.alkyl aryledinami8 ya ndenge wana lokola u u u u u u u u u upras5, 2018, 2018, 10. Na bobange ya ozone dynamique tango esalelami na paraffine, elakisaka pe effet protecteur ya kokamwa na âge ya ozone statique, ezali normalement te problème ya gus ya gushe.Vérity ya liboso 4010na ezali nanu kosalelama mingi.

6DDP is also commonly used as an anti-aging agent for these substances.Has its reason, it does not cause dermatitis, and other alkyl aryl para-phenylene diamine and dialkyl than para-phenylene diamine, its effect on processing safety, promote the charred tend to be small, with other alkyl aryl and alkyl than para-phenylene diamine, its volatile small, it is excellent stabilizer of SBR, and shows the characteristics of the antioxidants.When the substituents are all aryl groups, they are called p-phenylenediamines. Compared with alkyl aryl p-phenylenediamines, they have low price but low anti-ozone activity. Due to their slow migration speed, these substances have good durability and are effective antioxidants.They have the disadvantage that easy Ko pulvériser ezali très faible solubilité na caoutchouc, kasi ezali très utile na CR mpo ekoki kobimisa effet protecteur ya malamu.mpe ekosala te problème ya ko promouvoir kozika ya coke.

Antioxydant phénoliques .

Lolenge oyo ya agent anti-âge esalelamaka mingi mingi lokola antioxydant, ba variétés mosusu ezali mpe na passivation ya ba ions métalliques.Nzokande, efficacité ya protection ezali malamu te lokola ba agents anti-âge amine, avantage principal ya lolenge oyo ya agent anti-âge ezali non-pollution, ebongi mpo na ba produits ya caoutchouc ya couleur lumière.

Phénol bloqué, lolenge oyo ya agent anti-âge esalelamaka mingi na agent anti-âge 264, SP soki tokokanisi yango na ba agents mosusu ya anti-âge ya poids moléculaire ya likolo, lolenge oyo ya matériel ezali na volatilité ya likolo mpe durability ya mabe, kasi lolenge oyo ya matériel ezali na efficacité ya protection moyenne.Agent anti-âge 264 ekoki kosalelama na ba produits ya grade ya biloko ya kolia{8}}

Bisphénol bloqués, ba variétés oyo esalemaka mingi ezali 2246 na 2246s, lolenge oyo ya matériel ezali malamu koleka phénol oyo ekangami na fonction ya protection mpe non-pollution, kasi prix ezali likolo, lolenge oyo ya matériel ekoki kopesa protection efficace mpo na ba produits éponge ya caoutchouc, oyo esalelamaka mpe na ba produits ya latex.

Ba polyphénols, mingi mingi ezali kolobela ba dérivés ya p-phenylenediamine, lokola 2, 5-Dirtert pentyl hydroquinone ezali moko na yango, lolenge oyo ya matériel esalelamaka mingi mingi mpo na kobatela viscosité ya film ya caoutchouc non vulcanisé mpe adhésif, kasi mpe lokola stabilisateur ya NBR.

Agent ya antijoux ya sulfure organique .

As a stabilizer widely used in polyolefin plastics this kind of anti-aging agent can destroy hydroperoxide type anti-aging agent.Dithiocarbamate and thiol - based benzimidazole are widely used in rubber.Currently, zinc dibutyl dithiocarbamate is widely used.This substance is often used as a stabilizer in the production of butyl rubber.The other is nickel Dibutyl dithiamine acide formique (NBC), ekoki kobongisa NBR, CR, SBR statique ozone ya bobateli ya bobange.kasi NR esalisaka na effet ya oxydation ya Kang.

Thiolyl benzimidazole .

Lokola agent anti-âge MB, MBZ, ezali mpe moko ya ba agents anti-âge oyo esalelamaka mingi na caoutchouc, ezali na effet protecteur ya moyenne na NR, SBR, BR, NBR.Ezali mpe na fonction ya kopekisa oxydation catalytique ya ba ions ya cuivre.Lolenge oyo ya agent anti - vieillissement esalemaka mingi na ba produits ya couleur ya pete{5}}

Agent anti - vieillissement non migratoire .

Nyonso na caoutchouc mpo na kobeta efficacité ya protection ya kowumela ya agent ya vieillissement, oyo babengi agent ya vieillissement non migrantoire, misusu oyo babengaka mpe agent ya vieillissement non extraction to agent ya vieillissement persistant.Chambre na ba agents généraux anti-âge, ezali surtout difficile ya ko extraire, difficile ya ko jouer mpe difficile ya ko transférer. Ezali na ba méthodes minei mpo na kosala ba agents anti-âges oyo e pesaka efficacité ya caoutchouc:

1. Bobakisa kilo ya molécule ya ba agents anti-âge.

2, na mosala ya bobange mpe bokangami ya biloko ya chimique ya caoutchouc.

3. Kosala greffe ya agent anti-âge na caoutchouc avant ya kosala.

4. Copolymeriser ba monomères ya protection na ba monomères ya caoutchouc na processus ya fabrication.

Misato ya suka ebengami tango mosusu lokola réactive to polymère-bonded.


Tinda mituna .