3,3′-bis(azidomethyl)oxetane/tetrahydrofuran NEW

Product Introduction

Executive standard: GJB 8134-2013

English name: 3,3 '- bis (azidothyll) oxetane/tetrahydrofuran copolymer (PBT)

Chinese alias: azide polyether, azide glue, 3,3-bis (azide methyl) epoxybutane

Physical and chemical properties

1.1 Solubility: insoluble in water, slightly soluble in ethanol, soluble in organic solvents such as dichloromethane

1.2 Structural formula: Chemical formula of tetrahydrofuran copolymer ether

Technical indicators

entry name

Tetrahydrofuran copolymer ether

test method

Type I, II, III, IV

Hydroxyl value, mmol/g

45.0-75.5

24.0-32.0

17.5-24.3

14.0-18.0

Titration method

Water mass fraction,%

≤ 0.07

Karl Fischer method

Acid value, mgKOH/g

≤ 0.09

Titration method

Number average molecular weight (VPO)

2000 ± 500

4000 ± 500

5400 ± 600

7000 ± 700

VPO method

Nitrogen content,%

37 ± 0.7

Combustion decomposition method

exterior

Light yellow or yellow viscous liquid with no visible mechanical impurities

Visual inspection

Product Usage

3,3-bis (azide methyl) oxocyclobutane tetrahydrofuran copolyether (PBT for short) has a high heat of formation (+874J/g), low glass transition temperature (-64 º C), high nitrogen content, high density, clean gas, good compatibility with other components of propellants, low mechanical sensitivity, and is an ideal adhesive for propellants. Azide polyether can endow propellants with excellent energy and mechanical properties, reduce detectable signals, and have low sensitivity in PBT azide propellants. The use of this adhesive is one of the important ways to develop a new generation of high-energy, insensitive, and low characteristic signal solid propellants.

packing of products

1L closed polyethylene white plastic drum packaging, with a drum mouth diameter of no less than 3mm and a net weight of 1kg per drum, can also be packaged according to customer requirements.

Storage method

Store at room temperature or lower, in a cool and ventilated place, with a storage temperature range of (-20 to 38) ℃. The storage period is 12 months, and it can still be used if it expires and passes the retest.

Product transportation

During transportation, it is necessary to avoid rain, dampness, and exposure to sunlight. It should not be mixed with strong oxidants or alcohol substances, and violent collisions are prohibited.