Thaum twg rab phom tau tsim?

Cov txheej txheem:

Thaum twg rab phom tau tsim?
Thaum twg rab phom tau tsim?

Video: Thaum twg rab phom tau tsim?

Video: Thaum twg rab phom tau tsim?
Video: Yog Tsis Yog Wb - NorthSide Twins (OFFICIAL VIDEO RELEASE) 2024, Hlis ntuj nqeg
Anonim

Tus kws tshuaj Askiv Askiv Frederick Augustus Abel tau tsim thawj txheej txheem kev nyab xeeb rau kev tsim phom, uas nws tau patented hauv 1865Lub sijhawm ntxuav thiab ziab ntawm nitrocellulose ob leeg txuas mus rau 48 teev thiab rov ua dua yim zaug. Cov kua qaub sib tov tau hloov mus rau ob feem sulfuric acid rau ib feem nitric.

Pab phom nrhiav tau li cas?

Xyoo 1833, M. Braconet, ntawm Paris, tau tshawb pom tias starch, sawdust thiab paj rwb ntaub plaub, thaum kho nrog concentrated nitric acid, ua rau mob heev, noj hluav taws kub. qhov kub ntawm 356 Fah., tab sis yeej tsis tawg.

Thaum twg yog cellulose nitrate tsim?

YA Cellulose Nitrate-Nitrocellulose. Cellulose nitrate tau tsim nyob rau hauv 1845 los ntawm Schonbein, uas, vim nws ntseeg tias nws yog nitro compound es tsis txhob ester ntawm nitric acid, yuam kev hu ua nitrocellulose. Kev daws teeb meem ntawm cellulose nitrate (Pyroxylin) tau patented los ntawm Wilson thiab Green hauv 1884.

Puas yog guncotton a high explosive?

Guncotton, los yog nitrocellulose (tseem hu ua trinitrocellulose thiab cellulose nitrate) yog ib tawg me me, siv hauv foob pob hluav taws, tshuab, luam ntawv number case bases, tawv xov, thiab celluloid (a kev sib xyaw ntawm nitrocellulose thiab camphor; thawj zaug siv los tsim cov pob billiard).

Nitrocellulose nrhiav tau li cas?

Nitrocellulose tau tshawb pom los ntawm Fab Kis tus kws tshawb fawb Henri Braconnot hauv xyoo 1832. Nws tsim cov khoom sib xyaw los ntawm sib txuas nitric acid nrog ntoo fibers lossis hmoov txhuv nplej siab. … Nws thiaj li nchuav nitric acid rau ntawm lub rooj. Nws siv daim ntaub paj rwb los ntxuav qhov nchuav.

Pom zoo: