Hydrogenated HTPB Hydrogenated Hydroxyl Group-Terminated Polybutadiene
Hydrogenated HTPB Hydrogenated Hydroxyl Group-Terminated Polybutadiene
Product details:
Chemical Name: Hydrogenated HTPB
Type: Hydrogenated version
Formula：
Character: China Authorized Exporter / HTPB export licence
Standard: GB (Civil Grade) / GJB (Military Grade/ GJB 1327A-2003)
HTPB is a liquid remote claw polymer, the new liquid rubber. The properties vary because HTPB is a mixture rather than a pure compound, and it is manufactured to meet customers' specific requirements. A typical HTPB is R-45M with each end of the chain terminated with a hydroxyl [OH] group. (PS: we can do any versions of HTPB as customers request, and new design the HTPB with a single chain of hydroxyl -OH, Meanwhile, we can do hydrogenation of the HTPB)
For Hydrogenated HTPB is hydrogenated homopolymers of butadiene, they are both-end hydroxyl group-terminated and suitable for a wide range of uses. Due to the saturation of 1,2-vinyl group these polybutadienes possess excellent long-term chemical stability.
Properties as:
Highly flexible structure
Hydrophobicity
Low dielectric constant
Good chemical resistance
Reactive hydroxyl groups
Long-term stability
Resin modifiers, urethane resins(paints, adhesives, coating agents), electrical insulating materials, TPU elastomers
Packing:
Packed in 50kg/drum, 170kg/drum, The storage period is 1 year.
Safety instructions:
Storage should be at cool, dry and ventilate. The best condition is among -20 ~ 38℃. Shelf life of 12 months, if expire, still used if up to standard through retest. When transportation should avoid rain, sunlight. Don’t mix with strong oxidizer.
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ITEM
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GRADE I
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GRADE II
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GRADE III
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GRADE IV
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GRADE V
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GRADE VI
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Appearance
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achromatous or light yellow, no visible impurities
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Hydroxyl value,（mmol/g）
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0.47-0.53
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0.54-0.64
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0.65-0.70
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0.71-0.80
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0.81-1.00
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1.00-1.40
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Viscosity(40℃ Pa.s）≤
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9.5
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8.5
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4.0
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3.5
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5.0
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3.0
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Peroxide mass fraction, %
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0.04
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0.04
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0.05
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0.05
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0.10
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0.10
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Moisture,wt% ≤
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0.05
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0.05
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0.05
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0.05
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0.10
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0.10
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Volatile Content,% ≤
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0.5
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0.5
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0.65
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0.65
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1.0
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1.0
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Molecular weight
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3800-4600
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3300-4100
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3000-3600
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2700-3300
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2300-3000
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1600-2400
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* In addition：We can research and develop the new HTPB according to the special demand of our clients．
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| ITEM |
Grade-1 |
Grade-2 |
Grade-3 |
| Hydroxyl value (KOH mg/g) |
68 |
48 |
28 |
| 1,2-Vinyl (%) |
<7 |
<7 |
<7 |
| Tg, ℃ |
-44 |
-42 |
-37 |
| Mn, g/mol |
1500 |
2000 |
3100 |
| Viscosity, at 45℃ |
105 |
165 |
315 |
| Specific gravity, (25°C/4°C) |
0.88 |
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| Terminal structure |
-OH |
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| * In addition：We can research and develop any new version of HTPB according to the special demand of our clients． | |||
