Compound catalyst binder system used for room-temperature curing of PBX cast explosive
A technology for compounding catalysts and curing catalysts, which is applied in the direction of non-explosive desensitizers/passivators, non-explosives/non-thermal agent components, explosives, etc., and can solve problems such as easy sedimentation of solid components and unsatisfactory mechanical properties of cured products. , to speed up the curing reaction rate, improve the mechanical properties of the charge, and improve the safety
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Embodiment 1
[0015] Embodiment 1: A compound catalyst binder system for curing PBX pouring explosives at room temperature, made of the raw materials of the following weight: polypolyol polyol hydroxyl-terminated polybutadiene that is HTPB is 40g; polyisocyanate 3.7g; curing catalyst TNB 2 0.065g, nano-ZnO 0.044g; wherein the polyisocyanate is isophorone diisocyanate IPDI.
[0016] The preparation method is: use an electronic balance to accurately weigh HTPB, add it to a dry beaker, and add a compound catalyst mixed with a curing catalyst and nano-ZnO at the same time, use a digital display electric mixer to stir at high speed for 8 minutes (200rpm), add a curing agent isofor Alone diisocyanate IPDI, continue to stir for 1min, so that the components of the binder system are fully mixed evenly, after the stirring is completed, put the beaker into a vacuum desiccator and evacuate for 5min under the condition of a vacuum of 0.01MPa to remove air bubbles. The binder system is prepared. Under t...
Embodiment 2
[0017] Embodiment 2: A compound catalyst binder system for curing PBX pouring explosives at room temperature, made of the raw materials of the following weight: polypolyol polyol hydroxyl-terminated polybutadiene, that is, HTPB is 40g; polyisocyanate 3.7g; curing catalyst TNB 2 0.109g, nano-ZnO 1.154g; wherein the polyisocyanate is isophorone diisocyanate IPDI.
[0018] The specific preparation method is: use an electronic balance to accurately weigh HTPB, add it to a dry beaker, and add the curing catalyst TNB at the same time 2 For the composite catalyst mixed with nano-ZnO, use a digital display electric mixer to stir at high speed for 5 minutes (500rpm), add the curing agent isophorone diisocyanate IPDI, and continue to stir for 2 minutes to fully mix the components of the binder system evenly. After completion, put the beaker into a vacuum desiccator and evacuate for 3 minutes under the condition of a vacuum degree of 0.03 MPa to remove air bubbles. The prepared binder s...
Embodiment 3
[0019] Embodiment 3: A compound catalyst binder system for curing PBX pouring explosives at room temperature, made of the raw materials of the following weight: polypolyol polyol hydroxyl-terminated polybutadiene, namely HTPB, is 40g; polyisocyanate 6.17g; curing catalyst TNB 2 0.346g, nano-ZnO 1.154g; wherein the polyisocyanate is HDI trimer.
[0020] The specific preparation method is to use an electronic balance to accurately weigh HTPB, add it to a dry beaker, and add the curing catalyst TNB at the same time 2 For the composite catalyst mixed with nano-ZnO, use a digital display electric mixer to stir at high speed for 2 minutes (1000rpm), add the curing agent isophorone diisocyanate IPDI, and continue to stir for 3 minutes to fully mix the components of the binder system evenly, and stir After completion, put the beaker into a vacuum desiccator and evacuate for 2 minutes under the condition of a vacuum degree of 0.05 MPa to remove air bubbles. The prepared binder system ...
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