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CAS 69102-90-5 HTPB solid propellant Hydroxyl-terminated polybutadiene HTPB for propellant, adhesive, sealant

Short Description:

HTPB is a liquid remote claw polymer, the new liquid rubber.It and chain extension agent, crosslinking agent in room temperature or high temperature reaction can generate 3D network structure of curing content.The curing content has excellent mechanical properties, especially good resistance to hydrolysis, acid and alkali resistant, wear resistance, low temperature resistance and excellent electrical insulation.


Product Detail

Product Tags

Product Description

HTPB / Hydroxyl-terminated polybutadiene CAS: 69102-90-5

Product details:

Chemical Name: Hydroxyl-terminated polybutadiene

Code: HTPB, HTPB-R45M

CAS: 69102-90-5

Formula:

HTPB

Character: China Authorized Exporter / HTPB export licence

Standard: GB (Civil Grade) / GJB (Military Grade/ GJB 1327A-2003)

Features

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)

It and chain extension agent, crosslinking agent in room temperature or high temperature reaction can generate 3D network structure of curing content.The curing content has excellent mechanical properties, especially good resistance to hydrolysis, acid and alkali resistant, wear resistance, low temperature resistance and excellent electrical insulation.

Polyurethanes prepared from HTPB can be engineered for specific physical properties; polyurethanes may be highly elastic or tough and rigid. Some products include: rigid foam insulation panels; durable elastomeric wheels and tires (used for roller coasters, escalators, skateboards, etc.); automotive suspension bushings; electrical potting compounds; high-performance adhesives; surface coatings and surface sealants; synthetic fibers (e.g., Spandex); carpet underlay; hard-plastic parts (e.g., for electronic instruments).

An important application of HTPB is in solid rocket propellant. It binds the oxidizing agent, fuel and other ingredients into a solid but elastic mass in most composite propellant systems. The cured polyurethane acts as a fuel in such mixtures. For example the propellant as "HTPB/AP/Al=12/68/20", which means, proportioned by mass, HTPB plus curative 12% (binder and fuel), ammonium perchlorate 68% (oxidizer), and aluminum powder 20% (fuel).

Similar propellants, often referred to as APCP (ammonium perchlorate composite propellant) are used in larger model rockets. A typical APCP produces 2–3 times the specific impulse of the black powder propellant used in most smaller rocket motors.

HTPB is also used as a hybrid rocket fuel.

Applications

HTPB has good diaphaneity,low viscosity, ageing resistance, low temperature performance, Hydrolysis resistance, acid and alkali resistance, wear resistance and excellent electrical insulation properties

and processing performance is good. HTPB can be used in :

- Adhesive

- Sealents

- Polymers

- Electrical insulation materials

- Waterproofing and corrosion protection materials

- Coating

- Polyurethane materials

- Rubber products

- Solid fuel

- Propellant

- Car and Planes tires of structural materials

- Hydroxyl-terminated polybutadiene propellant(HTPB+AP+Al)

- Aerospace, Rockets and Missile

- and so on many kinds of usage.

HTPB 应用

Packing & Storage

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.

Specification

ITEM
GRADE I
GRADE II
GRADE III
GRADE IV
GRADE V
GRADE VI
Appearance
achromatous or light yellow, no visible impurities
Hydroxyl value,(mmol/g)
0.47-0.53
0.54-0.64
0.65-0.70
0.71-0.80
0.81-1.00
1.00-1.40
Viscosity(40℃ Pa.s)≤
9.5
8.5
4.0
3.5
5.0
3.0
Peroxide mass fraction, %
0.04
0.04
0.05
0.05
0.10
0.10
Moisture,wt% ≤
0.05
0.05
0.05
0.05
0.10
0.10
Volatile Content,% ≤
0.5
0.5
0.65
0.65
1.0
1.0
Molecular weight
3800-4600
3300-4100
3000-3600
2700-3300
2300-3000
1600-2400
* In addition:We can research and develop the new HTPB according to the special demand of our clients.

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