Umgaqo
Kwiminyaka yakutshanje, kubekho inkxalabo ekhulayo malunga neengozi zokusingqongileyo kunye nempilo ezibangelwa zizinto ezigcina ilangatye ezisekelwe kwi-halogen ezisetyenziswa kwiplastiki. Ngenxa yoko, izinto ezigcina ilangatye ezingezizo ii-halogen ziye zathandwa ngenxa yeempawu zazo ezikhuselekileyo nezihlala ixesha elide.
Izinto ezithintela ilangatye ezingenayo i-halogen zisebenza ngokuphazamisa iinkqubo zokutsha ezenzeka xa iiplastiki zichatshazelwa ngumlilo.
1. Bakwenza oku ngokuphazamisa ngokwasemzimbeni nangokweekhemikhali iigesi ezivuthayo ezikhutshwa ngexesha lokutsha. Enye yeendlela eziqhelekileyo kukwenziwa komaleko wekhabhoni okhuselayo phezu komphezulu weplastiki.
2. Xa zibekwe kubushushu, izinto ezithintela umlilo ezingenayo i-halogen zenza i-chemical reaction, ekhupha amanzi okanye ezinye iigesi ezingatshiyo. Ezi gesi zenza umqobo phakathi kweplastiki nelangatye, ngaloo ndlela zinciphisa ukusasazeka komlilo.
3. Izinto ezithintela ilangatye ezingenayo i-halogen ziyabola kwaye zenze umaleko ozinzileyo we-carbonized, owaziwa ngokuba yi-char, osebenza njengomqobo obonakalayo, othintela ukukhutshwa okungakumbi kweegesi ezinokutsha.
4. Ngaphezu koko, izinto ezithintela umlilo ezingenayo i-halogen zinokunciphisa iigesi ezivuthayo ngokuyi-ionisa nokubamba ii-free radicals kunye nezinto ezinokutsha eziguquguqukayo. Le mpendulo iyaphula ngempumelelo i-chain reaction yokutsha, inciphise ngakumbi amandla omlilo.
I-Ammonium polyphosphate yinto ethintela ilangatye engena-phosphorus-nitrogen halogen. Isebenza kakuhle kakhulu ekuthinteleni ilangatye kwiiplastiki kwaye ayinabungozi kwaye ayibangeli bungozi kwindalo.
Ukusetyenziswa kweplastiki
Iiplastiki ezithintela ilangatye ezifana ne-FR PP, i-FR PE, i-FR PA, i-FR PET, i-FR PBT njalo njalo zisetyenziswa kakhulu kwishishini leemoto kwiindawo zangaphakathi zeemoto, ezifana needeshibhodi, iiphaneli zeminyango, izinto zesihlalo, iindawo zombane, iitreyi zekhebula, iiphaneli zombane ezimelana nomlilo, iiswitshi, iindawo zombane, kunye nokuthutha amanzi, imibhobho yegesi.
Umgangatho othintela ilangatye (UL94)
I-UL 94 ngumgangatho wokutsha kweplastiki okhutshwe yi-Underwriters Laboratories (USA). Lo mgangatho uhlela iiplastiki ngokwendlela ezitsha ngayo kwiindawo ezahlukeneyo kunye nobukhulu benxalenye ukusuka kweyona incinci ithintela umlilo ukuya kweyona ithintela umlilo kwiindidi ezintandathu ezahlukeneyo.
| Uvavanyo lwe-UL 94 | Inkcazo yoVavanyo |
| V-2 | Ukutsha kuyayeka kwimizuzwana engama-30 kwinxalenye ethile okuvumela amaconsi eplastiki etshayo ngokuthe nkqo. |
| V-1 | Ukutsha kuyayeka kwimizuzwana engama-30 kwindawo ethe nkqo, nto leyo evumela amathontsi eplastiki angatshiyo. |
| V-0 | Ukutsha kuyayeka kwimizuzwana eli-10 kwindawo ethe nkqo, nto leyo evumela amathontsi eplastiki angatshiyo. |
Ifomula Ethunyelweyo
| Izinto eziphathekayo | Ifomula S1 | Ifomula S2 |
| I-Homopolymerization PP (H110MA) | 77.3% | |
| I-Copolymerization PP (EP300M) | 77.3% | |
| Isithambisi (i-EBS) | 0.2% | 0.2% |
| I-Antioxidant (B215) | 0.3% | 0.3% |
| Ukungathontsi (FA500H) | 0.2% | 0.2% |
| TF-241 | 22-24% | 23-25% |
| Iipropati zoomatshini ezisekelwe kwi-30% yokongeza umthamo we-TF-241. Nge-30% TF-241 ukufikelela kwi-UL94 V-0 (1.5mm) | ||
| Into | Ifomula S1 | Ifomula S2 |
| Izinga lokutsha ngokuthe nkqo | I-V0(1.5mm) | UL94 V-0(1.5mm) |
| Umlinganiselo we-oxygen index(%) | 30 | 28 |
| Amandla okuxinana (MPa) | 28 | 23 |
| Ukwandiswa ngexesha lokuphumla (%) | 53 | 102 |
| Izinga lokutsha emva kokuba libilisiwe ngamanzi (70℃, iiyure ezingama-48) | I-V0(3.2mm) | I-V0(3.2mm) |
| I-V0(1.5mm) | I-V0(1.5mm) | |
| Imodulus eguquguqukayo (MPa) | 2315 | 1981 |
| I-Meltindex(230℃,2.16KG) | 6.5 | 3.2 |
