Hydroxyl-Terminated Polybutadiene

CAS NO.: 69102-90-5
HS code: 3902900020
Appearance: Colorless or light yellow transparent liquid, no visible impurities.
Minimum order Quantity(MOQ): 5 tons

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Description

Uses: Mainly used in aerospace solid rocket propellant adhesives. HTPB is cast in engine propulsion system and cured together with oxidizer, aluminum powder and high-energy fuel material for solid rocket and various types of missile propellant binder. In addition, it is also used as a propellant adhesive for propulsion, direction change, escape and deceleration systems of space vehicles.

Packing: 50L closed top polyethylene white plastic drum packaging. Barrel mouth diameter not less than 100mm. Net weight per barrel 50KG.

Specification:

ltems		Hydroxyl-terminated polybutadiene					Test Method
ltems		Type Ⅰ	Type Ⅰ Modified	Type Ⅱ	Type Ⅲ	Type Ⅳ	Test Method
Hydroxyl value	mmol/g	0.47-0.53		0.54-0.64	0.65-0.70	0.71-0.80	Titration
Water mass fraction	%	≤ 0.050					Karl Fischer Method
H₂0₂	%	≤ 0.040			≤ 0.050		Titratian
Viscosity(40°C)	Pa.5	≤ 9.5		≤ 8.5	≤ 4.0	≤ 3.5	Single- drum rotational viscometer method
Average molecular weight (x10³)	(POV) (GPC)	3.80-4.60	4.00-4.60	3.30-4.10	3.00-3.60	2.70-3.30	VPO method
Mass fraction of volatiles	%	≤ 0.5			0.65		Vacuum drying method
Apperance	Colorless or light yellow transparent liquid, na visually visible impurities						Visual inspection