1. CC CH TIU L HA C A CAO SU THIN NHIN 丹 NH CHU N K THU T
THEO TIU CHU N C A VI T NAM (TCVN 3769: 2004)
H ng
SVR SVR SVR SVR SVR SVR SVR SVR
SVR 5 1) Ph動董ng ph叩p th
CV 60 CV 50 L 3L 10CV 10 20CV 20
T棚n ch ti棚u
M 単担ng
M n動 c ngoi l担 M 単担ng ngoi l担
ho c m t
1. Hm l動 ng ch t b n gi l i tr棚n r但y 45袖m, % m/m, TCVN 6089: 2004
0,02 0,02 0,02 0,03 0,05 0,08 0,08 0,16 0,16 (ISO 249: 1995)
kh担ng l n h董n
TCVN 6087: 2004
2. Hm l動 ng tro, % m/m kh担ng l n h董n 0,40 0,40 0,40 0,50 0,60 0,60 0,60 0,80 0,80 (ISO 247: 1990)
TCVN 6091: 2004
3. Hm l動 ng nit董, % m/m, kh担ng l n h董n 0,60 0,60 0,60 0,60 0,60 0,60 0,60 0,60 0,60 (ISO 1656: 1996)
TCVN 6088: 2004
4. Hm l動 ng ch t bay h董i, % m/m, kh担ng l n h董n 2) 0,80 0,80 0,80 0,80 0,80 0,80 0,80 0,80 0,80 (ISO 248: 1991)
TCVN 6092-2: 2004
5. 丹 d o 単 u ( Po ), kh担ng nh h董n - - 35 35 30 - 30 - 30 (ISO 2007: 1991)
TCVN 6092-1: 2004
6. Ch s duy tr狸 単 d o (PRI ), kh担ng nh h董n 60 60 60 60 60 50 50 40 40 (ISO 2930: 1995)
7. Ch s mu Lovibond, m u 単董n, kh担ng l n h董n - - 4 6 - - - - - TCVN 6093: 2004
丹 r ng gi a c叩c m u, kh担ng l n h董n - - - 2 - - - - - (ISO 4660: 1999)
+7 +7
TCVN 6090: 2004
o 3) (ISO 289-1: 1994)
8. 丹 nh t Mooney ML (1 + 4) 100 C 60 賊 5 50 賊 5 - - - - -
60 65
-5 -5
TCVN 6094: 2004
9. 丹 c t鱈nh l動u h坦a 4) R R R R - R - R - (ISO 3417: 1991)
10. M達 mu c a d i Da cam Trong Tr ng 単 c
11. M達 mu c a ch 丹en Xanh l叩 c但y nh t 丹 t動董i N但u Vng 丹
1)
C坦 3 c p h ng ph c a SVR 5 bao g m SVR 5WF (ch bi n t m n動 c ngoi l担), SVR 5RSS (辿p bnh t t cao su x担ng kh坦i) v SVR 5ADS (辿p bnh t t cao su x担ng h董i).
2)
Gi i h n c a nh s n xu t kh担ng v動 t qu叩 0,5%.
3)
Gi i h n c a nh s n xu t 単 i v i cao su n 単 nh 単 nh t Mooney.
4)
丹 th Rheograph (R) v 単 c t鱈nh l動u ho叩 単動 c k竪m theo khi c坦 y棚u c u c a kh叩ch hng.
2. PARAMETERS OF STANDARD VIETNAMESE RUBRER (SVR)
(TCVN 3769: 2004)
Approved under the Decision No 61/Q丹-BKHCN dated January 19th 2005 of the Ministry of Science and Technology
Grade
SVR SVR SVR SVR SVR 5 SVR SVR SVR SVR
1)
CV 60 CV 50 L 3L 10CV 10 20CV 20 Test method
Parameter Field
latex or
Field latex material Field grade material
sheet
material
1. Dirt content (max % wt) (retained on 45 TCVN 6089: 2004
0.02 0.02 0.02 0.03 0.05 0.08 0.08 0.16 0.16
micron sieve) (ISO 249: 1995)
TCVN 6087: 2004
2. Ash content (max % wt) 0.40 0.40 0.40 0.50 0.60 0.60 0.60 0.80 0.80
(ISO 247: 1990)
TCVN 6091: 2004
3. Nitrogen content ( max % wt) 0.60 0.60 0.60 0.60 0.60 0.60 0.60 0.60 0.60
(ISO 1656: 1996)
TCVN 6088: 2004
4. Volatile matter (max % wt) 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80
(ISO 248: 1991)
TCVN 6092-2: 2004
5. Initial plasticity (Po) (min) - - 35 35 30 - 30 - 30
(ISO 2007: 1991)
TCVN 6092-1: 2004
6. Plasticity retention index (PRI) (min) 60 60 60 60 60 50 50 40 40
(ISO 2930: 1995)
7. Lovibond Color index (max) - - 4 6 - - - - - TCVN 6093: 2004
Difference between samples(max) - - - 2 - - - - - (ISO 4660: 1999)
TCVN 6090: 2004
+7 +7 (ISO 289-1: 1994)
8. Mooney viscosity ML (1 + 4) 100oC 60 賊 5 50 賊 5 - - - 60 - 65 -
-5 -5
4) TCVN 6094: 2004
9. Cure R R R R - R - R -
(ISO 3417: 1991)
10. Color coding band
Orange Transparent White opaque
11. Color coding marker
Black Light green Magenta Brown Yellow Red
1)
There are 3 sub-grades of SVR 5 including SVR 5 WF (Processed from Field latex), SVR 5RSS (Pressed bale of Rubber Smoked Sheet) and SVR ADS (Pressed bale of
Air Dried Sheet).
2)
Min limits 0.5% of producer.
3)
Limit of producer for Constant Viscosity Mooney.
4)
Rheograph (R) and cure property are enclosed when customer requires.
3. Specifications ISO 2000 for block rubber
Parameters TSR CV TSRL TSR 5 TSR 10 TSR 20 TSR 50
Dirt content on 44 sieve 0.05 0.05 0.05 0.10 0.20 0.50
(max % wt)
Ash content 0.60 0.60 0.60 0.75 1.00 1.50
(max % wt)
Nitrogen content 0.60 0.60 0.60 0.60 0.60 0.60
(max % wt)
Volatile matter 0.80 0.80 0.80 0.80 0.80 0.80
(max % wt)
Wallace plasticity (Po - 30 30 30 30 30
(min)
Plasticity Retention Index 60 60 60 50 40 30
(PRI) min
Color max - 6 - - - -
Mooney viscosity 60+/- 5
(Source: Rubber Asia. 2005. Asian Rubber Handbook and Directory 2005. p. 65)