HTBP/R-45M

Physical Properties

Appearance: Colorless to yellowish - transparent liquid, without visible impurities.

Viscosity (40℃): ≤9.5Pa·s for type I, ≤8.5Pa·s for type I - modified, ≤4.0Pa·s for type II, ≤3.5Pa·s for type III.

Hydroxyl Value: 0.47 - 0.53mmol/g.

Density: 0.913g/mL at 25℃.

Refractive Index: n20/D 1.5126.

Flash Point: 113℃.

Volatilization Loss: ≤0.5%.

Chemical Properties

HTPB is a liquid telechelic polymer. Its molecular chain has hydroxyl functional groups at both ends, which can react with chain extenders and cross - linkers at room temperature or high temperature to form a cured product with a three - dimensional network structure.

Product Specifications

Grade: Usually divided into multiple grades, such as type I, type I - modified, type II, type III, type Ⅳ. Different grades have different indicators of hydroxyl value and viscosity.

Uses

Aerospace Field: HTPB R45M can be used as a binder for solid rockets and various missile propellants, and is poured into the engine propulsion system together with oxidizers, aluminum powder, and high - energy combustion materials and solidified.

Adhesive Field: It can be used as an adhesive for bonding a variety of materials, connecting objects through surface adhesion and cohesion.

Coating Field: Applied to the surface of protected or decorated objects, it can form a continuous film that adheres firmly to the coated object.

Rubber Products Field: Used to manufacture structural materials for automobile and aircraft tires, as well as industrial rubber materials such as belts and shock - proof rubber.

Electrical Insulation Field: It can be used as electrical insulation materials and potting materials. In addition, it is also used in artificial leather, elastic fiber, foam plastic, impact - absorbing materials, and as a modifier for rubber and plastic, etc.

Packaging and Storage

Packaging: Usually packed in 50L white polyethylene plastic buckets, 50kg per bucket.

Storage: Should be stored in a cool, dry, and ventilated place. The best storage temperature is - 20℃ to 38℃, and the shelf life is 12 months. If the performance retest is qualified after the expiration date, it can still be used.