Yuav ua li cas thiaj paub thiab xaiv tau ntawm PA6 thiab PA66 uas tau hloov kho (Ntu 2)?

Taw Qhia 5: Yuav Xaiv Li Cas Ntawm PA6 thiab PA66?

1. Thaum tsis tas yuav tiv taus kub siab tshaj 187 ° C, xaiv PA6 + GF, vim nws pheej yig dua thiab yooj yim dua rau kev ua.
2. Rau cov ntawv thov uas xav tau kev tiv taus kub siab, siv PA66 + GF.
3. Lub HDT (Kub Deflection Kub) ntawm PA66 + 30GF yog 250 ° C, thaum PA6 + 30GF yog 220 ° C.

PA6 muaj cov khoom siv tshuaj lom neeg thiab lub cev zoo ib yam li PA66, tab sis nws muaj qhov melting qis dua thiab qhov kub ua haujlwm dav dua. Nws muaj kev tiv thaiv kev cuam tshuam zoo dua thiab kev tiv thaiv cov kuab tshuaj dua li PA66 tab sis muaj kev nqus dej noo ntau dua. Vim tias ntau yam zoo ntawm cov khoom yas raug cuam tshuam los ntawm kev nqus dej noo, qhov no yuav tsum tau xav txog zoo thaum tsim cov khoom nrog PA6.

Yuav kom paub tseeb tias PA6 muaj cov khoom siv kho tshuab, ntau yam khoom siv hloov kho feem ntau raug ntxiv. Cov iav fiber yog ib qho khoom siv ntxiv, thiab cov roj hmab hluavtaws kuj tseem yuav raug ntxiv rau hauv kom txhim kho kev tiv thaiv kev cuam tshuam.

Rau PA6 uas tsis muaj zog, qhov nrawm ntawm kev ntswj yog li ntawm 1% thiab 1.5%. Kev ntxiv cov iav fiber tuaj yeem txo qhov ntswj mus rau 0.3% (txawm hais tias siab dua me ntsis hauv qhov kev taw qhia perpendicular rau qhov ntws). Qhov nrawm kawg ntawm kev ntswj feem ntau yog cuam tshuam los ntawm crystallinity thiab kev nqus dej noo.

Taw Qhia 6: Qhov Sib Txawv ntawm Cov Txheej Txheem Txhaj Tshuaj Molding rau PA6 thiab PA66

1. Kev Kho Kom Qhuav:

• PA6 nqus tau cov dej noo yooj yim heev, yog li kev ziab ua ntej yog qhov tseem ceeb heev.
  • Yog tias cov khoom siv no muab ntim rau hauv cov thawv uas tsis ntub dej, khaws lub thawv kom kaw.
  • Yog tias cov dej noo ntau tshaj 0.2%, ziab nws hauv cua kub ntawm 80°C lossis siab dua li 3-4 teev.
  • Yog tias raug cua ntau tshaj 8 teev, pom zoo kom siv lub tshuab nqus tsev kom qhuav ntawm 105°C rau 1-2 teev.
  • Yuav tsum tau siv lub tshuab ziab khaub ncaws uas ua kom cov av noo noo.
• PA66 tsis tas yuav ziab yog tias cov khoom raug kaw ua ntej ua tiav.
  • Yog tias lub thawv cia khoom tau qhib lawm, ziab nws rau hauv cua kub ntawm 85°C.
  • Yog tias cov dej noo ntau tshaj 0.2%, yuav tsum tau siv lub tshuab nqus tsev kom qhuav ntawm 105°C rau 1-2 teev.
  • Pom zoo kom siv lub tshuab ziab kom qhuav.

2. Kub pwm:

• PA6: 260–310°C (rau cov qib txhawb nqa: 280–320°C).
• PA66: 260–310°C (rau cov qib txhawb nqa: 280–320°C).

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