|
|
 |
SpecificationsPage for Specifications
Chloroprene.Spec
| Comparison table of main Nairit grades with Neoprene analogues
|
| Grade
|
Mooney Viscosity
( ML 1+4 at 100 °C)
|
Comonomer
|
Crystallization rate
|
Equivalent (Neoprene)
|
| Nairit DM
|
40-50
|
none
|
Medium
|
WM-1, W
|
| Nairit DP
|
55-70
|
none
|
Medium
|
No absolute
analogue
|
Nairit DV 80
Nairit DV 100
Nairit DV 120
|
71-89
90-110
111-130
|
none
|
Medium
|
-
WHV-100
WHV
|
Nairit DSR-M
Nairit DSR-50
Nairit DSR-70
Nairit DSR-90
|
30-53
54-70
71-90
91-110
|
Sulfur
|
Medium
|
GN types
|
Storage stability of all these grades is good.
| Grade “Nairit DP”
|
| Parameters
|
Norm
|
| Color and form
|
From silver-
white to gray,
Granules
|
| Viscosity by Mooney ML 1+4 (100 ºC)
|
55-70
|
| Start of scorching T5, min, not less
|
15
|
| Losses in weight at drying, % no more
|
0,8
|
| Mass fraction of sulphatic ashes, % no more
|
1,0
|
Physical-mechanical parameters of vulcanized standard mix
a. Nominal strength at tensioning, MPa, not less
b. Relative elongation at break, % not less
|
20
800
|
“Nairit DP” is a mercaptan-modified chloroprene rubber.
Mooney viscosity 50±5; 60±5
It has medium crystallizability
It is applied for manufacture of wide purpose industrial rubber goods.
It is packed in 25 kg polyethylene-lined paper bags
| Grade “Nairit DM”
|
| Parameters
|
Norm
|
| Color and form
|
From silver-
white to gray,
Granules
|
| Viscosity by Mooney ML 1+4 (100 ºC)
|
40-54
|
| Start of scorching T5, min, not less
|
15
|
| Losses in weight at drying, % no more
|
0,8
|
| Mass fraction of sulphatic ashes, % no more
|
1,0
|
Physical-mechanical parameters of vulcanized standard mix
a. Nominal strength at tensioning, MPa, not less
b. Relative elongation at break, % not less
|
18
800
|
“Nairit DM” is a mercaptan-modified chloroprene rubber.
Mooney viscosity 44±4;
It has medium crystallizability
It is applied for manufacture of wide purpose industrial rubber goods.
It is packed in 25 kg polyethylene-lined paper bags
| Grade “Nairit DV”
|
| Parameters
|
Norm
|
| Color and form
|
From silver-
white to gray,
Granules
|
| Viscosity by Mooney ML 1+4 (100 ºC)
|
71-89; 90-110; 111-130
|
| Start of scorching T5, min, not less
|
13
|
| Losses in weight at drying, % no more
|
0,8
|
| Mass fraction of sulphatic ashes, % no more
|
1,0
|
Physical-mechanical parameters of vulcanized standard mix
a. Nominal strength at tensioning, MPa, not less
b. Relative elongation at break, % not less
|
22
800
|
“Nairit DV” is a mercaptan-modified chloroprene rubber.
Mooney viscosity 90±10; 110±10
It has medium crystallizability
It is applied for manufacture of wide purpose industrial rubber goods, adhesives and high loaded sealants
It is packed in 25 kg polyethylene-lined paper bags
| Grade “Nairit DSR-50”
|
| Parameters
|
Norm
|
| Color and form
|
From whitish-
amber to brown;
Granules
|
| Viscosity by Mooney ML 1+4 (100 ºC)
|
54-70
|
| Start of scorching T5, min, not less
|
15
|
| Losses in weight at drying, % no more
|
0,8
|
| Mass fraction of sulphatic ashes, % no more
|
1,0
|
Physical-mechanical parameters of vulcanized standard mix
a. Nominal strength at tensioning, MPa, not less
b. Relative elongation at break, % not less
|
25
850
|
| Mass fraction of tetraethylthiuram disulfide, %
|
0.8-1.4
|
| Grade “Nairit DSR-M”
|
| Parameters
|
Norm
|
| Color and form
|
From whitish-
amber to brown;
Granules
|
| Viscosity by Mooney ML 1+4 (100 ºC)
|
30-53
|
| Start of scorching T5, min, not less
|
15
|
| Losses in weight at drying, % no more
|
0,8
|
| Mass fraction of sulphatic ashes, % no more
|
1,0
|
Physical-mechanical parameters of vulcanized standard mix
a. Nominal strength at tensioning, MPa, not less
b. Relative elongation at break, % not less
|
23
850
|
| Mass fraction of tetraethylthiuram disulfide, %
|
0.8-1.4
|
“Nairit DSR” rubber is a copolymer of chloroprene and sulfur.
It has medium crystallizability
It is packed in 25 kg polyethylene-lined paper bags
Lithium polybutadiene rubber
|
Manufacture
|
Synthetic rubber, cis- butadiene PBR, lithium, with average content of 1.4-cis-links
is the product of butadiene polymerization with the use of lithium compounds as the catalyst.
|
| Product characteristics:
|
| Characteristics of material
|
Rated value
|
Test method
|
| 1
|
|
6
|
1. Content
- 1.4-cis-links, %, not less than
- 1.4-trans-links, %, not less than
- 1.2-vinyl-links, %, not less than
|
38
50
15
|
GOST 19920.2
|
| 2. Mooney viscosity, MB 1+4(100ºC), within the limited range
|
50- 56
|
ASTM D 1646
|
| 3. Kinematic viscosity(5%-solution in styrene), mm2/sec
|
170-196
|
ASTM D 2057
|
| 4. Color(5%-solution in styrene), APHA not more than
|
20
|
ASTM D 1209
|
| 5. Average mass yellow index, not more than
|
4.5
|
ASTM D 1209
|
| 6. Ash mass content, %, not more than
|
0.1
|
ASTM D 1416
|
| 7. Mass content of volatile compounds, %, not more than
|
0.75
|
ASTM D 1416
|
| 8. Mass content of water, %, not more than
|
0.2
|
ASTM D 2849
|
| 9. Mass gel content, %, not more than
|
0.2
|
ASTM D 3616 / FINA PS-61
|
| 10. Total volume of stabilizer, not less than
|
0.07
|
As per TU 2294-100-05766801-2003
|
|
Period of storage in the warehouse
|
The rubber is stored in the warehouses of producer of consumer at the temperature not higher than 30ºC
in places protected from contamination or exposure to direct sunlight or atmospheric percipitation.
Storage period- 1 year from the date of production.
|
|
Packing
|
Bales weighing 30 kg, packed in EVA- film as per STP 4.21-03.
Ruber bales wrapped in film are placed in the special- purpose metal or wooden box- type pallets.
|
|
Marking
|
Transportation marking is applied on each cargo item and should contain information as follows:
- name of manufacturer and its trademark
- name of consignee
- job number
- cargo item number and quality of items
- net weight and gross weight
- date of manufacture(month and year)
|
|
Product safety
|
Lithium PBR rubber is not toxic and belongs to low- hazard
substances of hazard class number 4. It is neither explosive nor self-ignited.
During transportation, storage and use no special precautions or safety rules shall be required.
|
|
» Products
» Supply to rubber
» Specifications