Reclaimed roj hmab tau siv los hloov qee cov roj hmab nyoos hauv kev tsim cov khoom siv roj hmab ntau xyoo lawm. Vim nws qhov kev ua tau zoo heev thiab tus nqi qis, cov roj hmab rov qab tsuas yog kwv yees li ib feem peb ntawm tus nqi ntawm cov roj hmab nyoos. Cov hauv qab no yog rau txhua tus. Qhia qhov zoo thiab qhov tsis zoo ntawm cov roj hmab rov qab.
Qhov zoo ntawm reclaimed roj hmab:
1. Nws muaj cov yas zoo thiab yooj yim rau kev sib xyaw nrog cov roj hmab nyoos thiab cov khoom siv sib xyaw ua ke, txuag cov txiv neej-teev thiab txo lub zog noj;
2. Lub shrinkage yog me me, uas tuaj yeem ua rau cov khoom muaj qhov du thiab qhov loj me;
3. Zoo fluidity, yooj yim los ua qauv khoom;
4. Kev laus ua haujlwm zoo, tuaj yeem txhim kho kev laus ntawm cov khoom siv roj hmab;
5. Nws muaj cov cua kub zoo, roj tsis kam, acid thiab alkali tsis kam;
6. Ceev vulcanization thiab zoo scorch kuj.
7. Nws kuj tuaj yeem txhim kho kev ua haujlwm ntawm cov txheej txheem ntau lawm.
Disadvantages ntawm reclaimed roj hmab:
Tsis zoo elasticity reclaimed roj hmab yog cov khoom yas tau los ntawm kev ua cov roj hmab elastic vulcanized. Yog li ntawd, kev saib xyuas yuav tsum tau them rau kev xaiv ib qho zoo compounding nyiaj thaum lub sij hawm daim ntawv thov, tshwj xeeb tshaj yog nyob rau hauv kev tsim cov khoom uas zoo elasticity, thiab roj hmab hmoov yuav tsum tau siv me me los yog tsis muaj cov roj hmab reclaimed li sai tau.
Qhov loj flexural cracking reclaimed roj hmab nws tus kheej muaj qhov tsis zoo flexural cracking tsis kam, uas yog vim qhov tsis muaj zog ntawm kev khi quab yuam nyob rau hauv cov molecules ntawm cov khib nyiab vulcanized roj hmab tom qab rov tsim dua. Rau qee cov khoom tshwj xeeb uas yuav tsum muaj siab rau flexural cracking, kev siv cov roj hmab rov qab yuav tsum tau txiav txim siab thiab siv, thiab qhov kev siv yuav tsum tau them nyiaj rau. Kev siv cov hmoov roj hmab tuaj yeem txhim kho flexural tsis kam. Muaj ntau ntau yam uas cuam tshuam rau lub kua muag tsis kam vim kev tsim kua muag tsis zoo. Ntawm lawv, tus neeg sawv cev sib xyaw ua ke tsis sib luag, thiab cov khoom lag luam roj hmab tsis yog tsuas yog muaj lub cev thiab cov khoom siv hluav taws xob tsawg, kev laus tsis zoo, tab sis kuj tsis muaj zog tsim kua muag. Thaum lub sij hawm desulfurization txheej txheem ntawm reclaimed roj hmab, vim tsis sib tov ntawm cov ntaub ntawv thiab tsis zoo dispersion ntawm regenerant, nws kuj yog ib qho tseem ceeb uas ua rau tsis zoo tsim kua muag ntawm reclaimed roj hmab. Qhov no yuav tsum tau them sai sai rau thaum thov. Qhov sib ntxiv ntawm cov hmoov roj hmab tuaj yeem txhim kho kev tsim kua muag. Cov roj hmab hydrocarbon muaj nyob rau hauv cov roj hmab reclaimed yog hais txog cov roj hmab elastic hauv cov khib nyiab vulcanizate.
