
Aditif Polimer IV
Quiz
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Other
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University
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Practice Problem
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Hard
Erfina Oktariani
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Curing agent dan akselerator sering ditambahkan ke dalam termoplastik untuk keperluan industri.
Benar
Salah
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Proses curing termoset dapat dipercepat tanpa akselerator, yaitu dengan pemberian panas eksternal.
Benar
Salah
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Jenis/Bentuk curing agent yang dapat ditambahkan pada proses injection/vacuum forming (Tabel 12.4 Buku J. Murphy) antara lain ........
Liquid, low activity
Liquid, super activity
Liquid, high activity
Liquid, normal activity
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tahapan reaksi umum peroksida sebagai cross-linking agent
Pembentukan Radikal Makro --> Pengaktifan Peroxide --> Percabangan rantai
& Chain-Scission --> Grafting
Pengaktifan Peroxide --> Pembentukan Radikal Mikro --> Percabangan rantai
& Chain-Scission --> Grafting
Pengaktifan Peroxide --> Pembentukan Radikal Makro --> Percabangan rantai
& Chain-Scission --> Grafting
Pembentukan Radikal Makro --> Pengaktifan Peroxide --> Grafting --> Percabangan rantai
& Chain-Scission
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Peroksida organik memiliki ikatan C-C yang sangat labil dan mudah terurai pada suhu tertentu.
Benar
Salah
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Prinsip cross-link yang harus diperhatikan yaitu .....
Menghindari crosslinking premature
Melibatkan crosslinking premature
Derajat crosslinking 70-80 %
Derajat crosslinking 75-85 %
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kompatibilizer secara kimiawi mengikat bahan yang berbeda sifat agar terikat bersama-sama bahkan di lingkungan yang menantang.
Benar
Salah
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