Nyob rau hauv lub me ntsis bitumen: roj av yog nyem los ntawm lub ntiaj teb crust rau lub sij hawm ntev hauv kev thiab tuaj cuag tau huab cua thiab noo noo. Nws lub roj roj cov ntsiab lus maj mam evaporates, thiab cov roj av tau tsim los ntawm kev sib xyaw thiab cov oxidation feem ntau sib xyaw nrog qee qhov kev faib ua feem ntawm cov zaub mov. Ntuj bitumen tuaj yeem faib rau hauv pas dej bitumen, thiab tom qab kev hloov pauv ntawm cov pob zeb qub, thiab kev hloov pauv, hauv qab kev sib xyaw ua ke ntawm lub zog cua sov, siab, oxidation, catalysts, kab mob, thiab lwm yam.

Roj hmab hmoov hloov kho bitumen (bitumenrubber, raug xa mus rau AR) yog hom khoom tshiab ntawm cov khoom siv zoo. Nws yog hom tshiab ntawm cov khoom siv zoo ua los ntawm cov roj hmab hmoov ua los ntawm cov log tsheb khib nyiab, uas yog ntxiv ua kev hloov kho rau lub hauv paus bestumen. Nws yog tsim los ntawm cov kev ua xws li kub, ntxiv thiab shear sib xyaw hauv cov khoom siv tshwj xeeb tshwj xeeb. Cov khoom siv. Nws tuaj yeem txuas txoj haujlwm ua neej ntawm txoj kev saum npoo av, txo suab nrov, txhim kho thermal ruaj khov thiab cua tawg tawg, thiab txhim kho icing tsis kam. Nyob rau hauv kev ua ke ntawm kev sib xyaw ua ke ntawm cov tsheb roj hmab hnyav, hydrocor, thiab undergoes hloov cov roj hmab thiab tshuaj hloov cov roj av thiab nthuav cov roj hmab hmoov. Lub viscosity nce, lub muag muag taw tes nce, thiab viscosity, kev sib tw ntawm roj hmab thiab bitumen tau coj mus rau hauv tus account, yog li kev txhim kho txoj kev ua haujlwm ntawm cov roj hmab bitumen.

High-tofuction thiab high-electicly hloov backen yog ib qho kev sib txuas ntawm transmified tshwj xeeb nrog kev hloov pauv zoo nrog kev hloov kho zoo. Nws cov khoom muag muag taw tes nce mus txog saum 85 ° C thiab nws cov hom phiaj viscamosed nce mus txog 580,000 Pa. Nws yog ib qho kev sib txuas siab siab-viscosity hloov bitumen. Cov kev sib txawv ntawm hom phiaj viscosity yog 3 lub sij hawm uas hloov pauv abumen thiab muaj kev ua tau zoo tshaj plaws kub. Nyob rau tib lub sijhawm, nws lub plab zom tau ncav cuag ntau dua 45cm, kev rov qab zoo tshaj plaws ntau tshaj li 95%, zoo heev deformation rov qab muaj peev xwm thiab siab tsis kam.

Siv SBS raws li cov khoom tseem ceeb rau kev tshuaj ntsuam uas tsim nyog compatibilizers thiab lawv cov qauv. Siv cov tov khoom zoo tib yam kom ntxiv qee qhov kev faib ua feem ntawm masterbatch ntawm cov tshuaj reactor, ua kom sov thiab sib tov nrog ntau yam masterbatch los ntawm cov txheej txheem granulation.

1. EVA modified bitumen EVA has good compatibility with bitumen and can be dissolved and dispersed in hot bitumen without colloid mill or high-shear mechanical processing, making it easy to use./
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In recent years, bitumen pavement projects in Africa have been used more frequently, so domestic counterparts are reminded to pay attention./
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2. Siab viscosity, siab elasticity thiab siab todomness hloov batumen. Lub bitumen viscosity thiab kev ntsuam xyuas todualness yog qhov tsim nyog dua rau sbr hloov kho me ntsis, tab sis thaum siv rau kev sim siab heev, ua qhov kev sim ua tsis tau. Hauv kev pom ntawm qhov no, nws raug nquahu kom siv cov tshuab ntsuas tshuab thoob ntiaj teb los ua qhov kev sib tw zoo nkauj, thiab siv txoj kev sib koom tes kom yooj yim laij cov ntawv xeem. 3. Cov ntaub ntawv roj hmab ntau dua hloov kho nrog cov pa roj carbon neuurbation thiab kev txuag hluav taws xob, txo qhov kev txo hluav taws xob yog qhov tseem ceeb. Cov log tsheb tau ntsib qhov teeb meem ntawm "huab hwm coj ntau lawm thiab" txij li kev tsim kho thiab tsim khoom. Cov log tsheb yuav tsum ncaj qha lossis tsis ncaj ncees kev siv cov khoom siv ntuj thiab lub zog tseem ceeb ntawm cov log tsheb, ua rau cov log tsheb loj dua 80% cov ntsiab lus carbon. Cov log tsheb khib nyiab tuaj yeem rov ua tau cov khoom siv thiab lub zog loj, kho cov pa roj carbon rau hauv cov khoom, thiab ua tiav lub hom phiaj txuag thiab emission txo.  Cov log tsheb khib nyiab yog polymer elastic cov ntaub ntawv uas nyuaj heev rau kev ua txhaum. Lawv muaj cov elasticity thiab tawv thiab yuav luag tsis muaj kev hloov pauv ntawm lub cev lossis tshuaj lom tshwm sim hauv qhov ntsuas kub ntawm -50c mus rau 150c. Yog li ntawd, yog tias lawv raug tso cai rau degree ib txwm nyob rau hauv av, lawv yuav tsis cuam tshuam rau qhov ntev ntawm kev loj hlob ntawm cov nroj tsuag, cov txheej txheem tuaj yeem siv sijhawm li 500 xyoo. Coob tus ntawm cov log tsheb loj yog piled up arbitrarily thiab nyob ib qho ntau ntawm cov av, tiv thaiv kev siv cov av muaj txiaj ntsig zoo. Ntxiv mus, kev siv dej ntev ntxiv hauv cov log tsheb yuav yug menyuam yoov thiab kis cov kab mob, ua rau cov neeg muaj kev phom sij rau tib neeg txoj kev noj qab haus huv.

Feem ntau hais lus, SBS kev hloov kho ntawm Bitumen yuav tsum muaj peb cov txheej txheem: kev sib tsoo), thiab kev sib tsoo), muaj kev sib tsoo ntawm kev sib raug zoo ntawm o thiab sib raug zoo. Qhov loj me ntawm o o cuam tshuam ncaj qha rau kev sib raug zoo. Yog hais tias sbs swells infinitely nyob rau hauv lub bitumen, lub kaw lus ua kom zoo sib xws. Tus cwj pwm o cuam tshuam nrog kev tsim khoom, ua lag luam siv tshuab thiab kev ruaj ntseg kub ntawm kev hloov kho bitumen hloov kho. Raws li qhov ntsuas kub nce ntxiv, qhov o ua kom nrawm dua, thiab qhov o tau pom tseeb ntawm qhov kub qhuav dua li cov iav hloov kub ntawm ps ntawm SB ntawm SBS. Tsis tas li ntawd, tus qauv ntawm SBS muaj qhov cuam tshuam tseem ceeb ntawm tus cwj pwm o: qhov o ua rau cov sbs ntawm linear sbs. Cov kev xam tsis zoo qhia tias qhov ceev ntawm SBS cov khoom noj o muaj nyob ntawm 0.97 thiab 1.01G / CM3, uas yog ze rau qhov ntom ntawm cov phenomic phenols.