1. Tam sim no feem ntau yog txoj kev toughening: sib tov tib qhov kev faib ua feem ntawm cov khoom tshiab thiab cov khoom siv rov ua dua qub
Sib tov tib qhov kev faib ua feem ntawm cov khoom tshiab thiab cov khoom siv rov ua dua ua ke. Txoj kev no tuaj yeem tsav qhov kev tiv thaiv ntawm cov khoom siv rov ua dua tshiab vim tias qhov zoo ntawm cov khoom siv raw. Qhov no kuj yog ib qho ntawm feem ntau toughening txoj kev. Thiab kuj txuag nyiaj.
2. Ib yam khoom rau toughening waterproof vents tau launched nyob rau hauv kev ua lag luam: toughening tus neeg sawv cev yog ntxiv rau cov khoom siv rov ua dua tshiab, uas tuaj yeem ua rau cov khoom siv rov qab ua lub luag haujlwm toughening. Toughening agent Nws feem ntau muab faib ua: particle toughening agent, kua toughening agent, hmoov toughening agent. Txhua hom tshuaj toughening lawv ntxiv yog txawv. Tus nqi kuj txawv. Tus neeg sawv cev zoo toughening, nws tuaj yeem ua rau cov khoom siv rov ua dua tshiab zoo ib yam li cov khoom siv raw, qee zaum zoo dua li cov khoom siv raw.
3. Ntxiv rau ob txoj kev toughening saum toj no, kuj tseem muaj qhov sib ntxiv ntawm EVA
EVA: Ethylene Vinyl Acetate Copolymer yog luv li EVA, - feem ntau, cov ntsiab lus ntawm Zene acetate (VA) yog 5 feem pua rau 40 feem pua. Piv nrog poly-Zene, EVA kuj tseem tuaj yeem siv rau hauv cov khoom siv rov ua dua tshiab vim yog kev qhia txog cov yas acetate monomer rau hauv cov saw molecular, uas txo cov crystallinity siab thiab txhim kho kev yooj yim, cuam tshuam tsis kam, muab tub lim compatibility thiab kub sealing kev ua tau zoo. Ntxiv EVA tuaj yeem txhim kho qhov yooj yim thiab cuam tshuam ntawm cov khoom siv rov ua dua tshiab. Tom qab ntawd nce qhov tsis kam ntawm cov vents dej.