Mwachidule za Flame-Retardant Technologies for Rubber Malo

Kupatulapo mitundu ingapo ya mphira wopangira, ambiri zopangidwa mphira zopangidwa , monga mphira wachilengedwe ,ndi zinthu zoyaka kapena zoyaka . M'mafakitale monga mphamvu zatsopano, machitidwe a batri ,ndi zida zamagetsi , zofunika kwambiri zoletsa moto zimayikidwa pazigawo za rabala, makamaka pazinthu monga Zida za Battery ndi Ma Damper Osagwedezeka Opanda Moto wa Halogen.

Pakali pano, waukulu luso njira kuwongolera kuchedwa kwamoto kwa zinthu za rabara kuphatikiza:

Kuwonjezera zoletsa moto kapena zozimitsa moto-retardant

Kusintha kosintha ndi zinthu zoletsa moto

Kuyambitsa magulu ogwira ntchito oletsa moto pa polymerization

Kuwonjezeka kwa crosslink density za mankhwala a mphira

Magawo otsatirawa akupereka kagawo kakang'ono ndi kufotokozera za matekinoloje oletsa moto wa raba.

1. Malawi-Retardant Technologies a Hydrocarbon Rubbers

1.1 Makhalidwe a Hydrocarbon Rubbers

Mapiritsi a Hydrocarbon makamaka kuphatikiza:

NR (Natural Rubber)

SBR (Styrene-Butadiene Rubber)

BR (Butadiene Rubber)

IIR (Butyl Rubber)

EPR / EPDM (Ethylene Propylene Rubber)

Ngakhale NBR (Nitrile Rubber) si mphira wamba wa hydrocarbon, ake njira zochizira moto woletsa moto ndizofanana ndipo nthawi zambiri zimakambidwa limodzi muzofunsira zauinjiniya.

Makhalidwe akuluakulu a mphira wa hydrocarbon akuphatikizapo:

Kuchepetsa Oxygen Index (LOI): pafupifupi. 19-21

Kutentha kwa kutentha: 200-500 ° C

Kusagwira ntchito bwino kwa moto komanso kukana kutentha

Kubadwa kwa ndalama zambiri mpweya woyaka pa kuyaka

Chifukwa chake, mukagwiritsidwa ntchito Zida za Battery, mafakitale damping pads , kapena General kugwedera kudzipatula zigawo zikuluzikulu , kusintha koletsa moto ndikofunikira.

1.2 Njira Zodziwika Zoletsa Moto wa Hydrocarbon Rubber

(1) Kuphatikiza ndi Ma polima Oletsa Moto

Posakaniza mphira wa hydrocarbon ndi ma polima oletsa moto monga:

Polyvinyl Chloride (PVC)

Chlorinated Polyethylene (CPE)

Chlorosulfonated Polyethylene (CSM)

Ethylene-Vinyl Acetate (EVA)

kuchedwa kwa lawi kungawonjezeke pamlingo wakutiwakuti. Pakusakaniza, chisamaliro chapadera chiyenera kuperekedwa:

Kugwirizana kwazinthu

Co-crosslinking system design

Njirayi imagwiritsidwa ntchito kwambiri structural Battery Pads kapena sanali mkulu-elasticity damping zigawo zikuluzikulu.

(2) Kuwonjezera kwa Flame Retardants (Njira Yoyambira)

Kuwonjezera kwa zoletsa moto ndiye njira yofunika kwambiri yowonjezerera kuchedwa kwa malawi mu mphira za hydrocarbon ndipo ikhoza kupititsidwa patsogolo machitidwe a synergistic.

Mafuta oletsa moto a organic halogen (njira zachikhalidwe):

Zotumphukira za Hexachlorocyclopentadiene

Decabromodiphenyl ether

Parafini ya chlorinated

Inorganic synergistic flame retardants:

Antimony trioxide (Sb₂O₃) (zogwiritsidwa ntchito nthawi zambiri)

Zinc borate

Aluminiyamu hydroxide

Ammonium kloride

⚠ Mfundo Zofunika:
Zoletsa moto za halogen siziyenera kukhala ma halojeni aulere , mwinamwake iwo angatero:

Kuwononga zida pokonza ndi nkhungu

Chepetsani ntchito yotchinjiriza magetsi

Kusokoneza kukalamba kukana

Mu mphamvu zatsopano ndi mafakitale zamagetsi, Ma Damper Osagwedezeka Opanda Moto wa Halogen zakhala zodziwika bwino, zomwe zimatsogolera pakukonda kwambiri machitidwe oletsa moto wa halogen.

(3) Kuphatikiza kwa Flame-Retardant Inorganic Fillers

Zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo:

Calcium carbonate

Kaolin dongo

Talc

Kuchuluka kwa silika

Aluminiyamu hydroxide

Njira iyi imakulitsa kuchedwa kwamoto ndi:

Kuchepetsa gawo la organic zinthu zoyaka

Kugwiritsa ntchito Endothermic decomposition effect za fillers

Mwachitsanzo:

Calcium carbonate ndi aluminium hydroxide kuyamwa kutentha kwakukulu panthawi ya kuwonongeka

Komabe, chidwi chiyenera kuperekedwa ku mfundo yakuti:

Kudzaza mochulukira kumachepetsa makina katundu

Osayenera kuthamanga kwambiri kapena mkulu-damping kugwedera kudzipatula zigawo zikuluzikulu

(4) Kuwonjezeka kwa Rubber Crosslink Density

Kafukufuku wasonyeza zimenezo:

Kuchulukirachulukira kwa ma crosslink → Mlozera wokwera wa okosijeni → Kuchepetsa kuchedwa kwamoto

Chida ichi chikugwirizana ndi ndondomekoyi kuwonjezeka kwa kutentha kwa kutentha kwa kutentha.

Njirayi yagwiritsidwa ntchito bwino mu EPDM mphira machitidwe ndipo ndi oyenera:

Ma Battery Pads omwe amagwiritsidwa ntchito m'malo otentha kwambiri

Zida za rabara zochepetsera kugwedezeka kwa malawi

2. Makhalidwe Osautsa Moto a Halogenated Rubber

Ma halogenated rubber Mwachilengedwe muli zinthu za halogen ndipo nthawi zambiri zimawonetsa:

Mlozera wa oxygen: 28-45

FPM (Fluororubber) oxygen index yoposa 65

Ma halogen apamwamba → bwino lawi retadancy

Khalidwe lozimitsa moto pambuyo pochotsa moto

Chotsatira chake, chithandizo chamoto choletsa moto cha mphira wa halogenated n'chosavuta, nthawi zambiri chimangofuna kulimbitsa pang'ono ndi zoletsa moto.

⚠ Komabe, chifukwa malamulo a chilengedwe (monga RoHS ndi FIKIRANI ) ndi zomwe zikuchitika mu makampani opanga mphamvu zatsopano, njira zopanda halogen amakondedwa kwambiri. Ichi ndi chifukwa chachikulu cha kukhazikitsidwa kwa anthu ambiri Ma Damper Osagwedezeka Opanda Moto wa Halogen.

3. Flame-Retardant Technologies kwa Heterochain Rubbers

Woimira kwambiri mphira wa heterochain ndi:

Dimethyl Silicone Rubber (VMQ)

Makhalidwe ake ofunikira akuphatikizapo:

Mlozera wa oxygen pafupifupi 25

Kutentha kwa kutentha kwapakati pa 400-600 ° C

Kukhazikika kwapamwamba kwambiri kwa kutentha

Njira zoletsa moto za mphira wa silikoni makamaka zimakhudza:

Kuwonjezeka kutentha kutentha kutentha

Kuchulukitsa kuchuluka kwa chotsalira chotsalira pambuyo pakuwola

Kuchepetsa kuchuluka kwa mpweya woyaka moto

Zotsatira zake, mphira wa silicone amagwiritsidwa ntchito kwambiri mu:

Ma Battery Pads Otentha Kwambiri

Zida zonyowetsa zoziziritsa kukhosi zopanda halogen zopanda malawi

Zida zodzitchinjiriza zamagetsi ndi zida zatsopano zamagetsi

Mapeto

Mapangidwe oletsa moto wa mankhwala amphira ziyenera kuganiziridwa mozama potengera mtundu wa rabala, malo ogwiritsira ntchito ,ndi zofunikira zamalamulo.

Kwa mapulogalamu monga:

Zida za Battery

Ma Damper Osagwedezeka Opanda Moto wa Halogen

akulimbikitsidwa kuika patsogolo:

Makina oletsa malawi opanda halogen

Mapangidwe oyenera a crosslink density

Mayankho oyenera pakati pa zodzaza zoletsa moto ndi magwiridwe antchito amakina

Kupatulapo mitundu ingapo ya mphira wopangira, ambiri zopangidwa mphira zopangidwa , monga mphira wachilengedwe ,ndi zinthu zoyaka kapena zoyaka.