聚甲醛工艺简介
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Introduction manufacturing of POM
Chemical Engineering Department
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POM
POM
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15 20 8 2 3
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TOX
TOX POM
POM DOX
DOX POM
POM
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Formalin 2
1 Formaldehyde
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3
HO H
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O HCOOH + CH
4
40%wtHCHO 60%wt HCHO
TOX DOX
14%wtHCHO 36-40%wt HCHO
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1
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2
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3
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TOX
1.
2. TOX
3.TOX
4.TOX
1.
1
HO H
HO-CH
2O-CH
2
O-C H
2
OH
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2
63
2
H CH
2O
3
3
O HCOOH100.5 64.7
OH HCOOCH32
OH41.5
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4
HCHO
TOX 17%wt
2. TOX
TOX 17%wt
HCHO43%wt
TOX
32%wt
65%wt
TOX
HCHO “ ” e r -s o f t
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3.TOX
69.8% TOX,
O
30.2%H
2
90-95%wt TOX
4.TOX
90-95%wt TOX
69.8% TOX,
30.2%H2O 65%wt TOX 90-95%wt TOX 90-95%wt TOX 99.99%wt
37%NaOH HCHO HCOOH
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DOX
1.
CH 2 -OH
CH 2 -OH + CH 2O
CH 2 -OH CH 2 -O-CH 2-OH
70-80 2hr CH 2 -OH
CH 2 -O-CH 2-OH H 2C H 2C O CH 2
O + H 2O
100-105
.
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2.
DOX
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POM
1 O H 2C
O
CH 2O
H 2C
+
H (BF 3OH)O H 2C
O CH 2 (BF 3OH)
O
H 2C H
O H 2C
O CH 2 (BF 3OH)
O
H 2C
H
HO-CH 2-O-CH 2-O-CH 2(BF 3OH)
1
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-O-CH 2-O-CH 2-O-CH 2-O-CH 2-O-CH 2(BF 3OH)
(BF 3OH)O
H 2C
O
CH 2O H 2C
+-O-CH 2-O-CH 2O
H 2C
O
CH 2O H 2C
-O-CH 2-O-CH 2- 2
O -CH 2-O -CH 2-CH 2
O -CH 2-CH 2-O -CH 2
(BF 3
OH)
-O-CH 2-O-CH 2+H 2C
CH 2
O H
2
C
O + +
-
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