A kind of chlorine-free low-melting-point thermoplastic gas generating agent and preparation method thereof
A gas generating agent, thermoplastic technology, used in non-explosive/non-thermal agent components, offensive equipment, explosives, etc., can solve the problems of acid mist or acid rain, ozone layer destruction, air pollution, etc., to achieve low price and good repeatability , the effect of gas cleaning
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[0064] A preparation method of a chlorine-free low melting point thermoplastic gas generating agent, the steps of the method comprising:
[0065] (1) Prepare plasticizer: mix dioctyl sebacate and liquid polybutadiene, then carry out decompression heating and rotary distillation treatment to obtain plasticizer;
[0066] When the dioctyl sebacate and liquid polybutadiene are mixed, a water bath is used to control the temperature, the temperature is 20-30°C, and the two are mixed evenly by mechanical stirring, and the stirring speed is 20-100rpm , the stirring time is 30-60min;
[0067] The conditions for the decompression heating and rotary distillation treatment are as follows: the degree of vacuum is -0.1-0 MPa, the temperature is 70-90° C., the time is 30-60 minutes, and the rotation speed is 20-100 rpm.
[0068] (2) Oxidant, cooling agent, combustion regulator, plasticizer, auxiliary agent are weighed according to said ratio;
[0069] (3) Put the adhesive into a vertical mix...
Embodiment 1
[0080] (1) Preparation and composition of composite plasticizer and low melting point thermoplastic gas generating agent
[0081] Preparation of composite plasticizer: weigh according to the mass ratio of dioctyl sebacate: liquid polybutadiene (number average molecular weight 900~1100)=1:0.7, put it into a container, put the container into a water bath, and carry out Mechanical stirring, water bath temperature 25°C, rotating speed 40rpm, stirring time 40min, seal the mixed plasticizer in a rotary evaporator, use a vacuum pump to reduce the pressure of the rotary evaporator to -0.03MPa, heat the temperature to 75°C, and evaporate The rotational speed was 60 rpm, and the rotary steaming time was 35 minutes to obtain composite plasticizer A.
[0082] Preparation of low-melting thermoplastic gas generating agent: Weigh the oxidant, cooling agent, combustion regulator, adhesive, plasticizer A, and auxiliary agent according to the stated ratio; put the adhesive into a vertical mixer...
Embodiment 2
[0087] (1) Preparation and composition of composite plasticizer and low melting point thermoplastic gas generating agent
[0088] Preparation of composite plasticizer: weigh according to mass ratio dioctyl sebacate: liquid polybutadiene (number-average molecular weight 1400~1700)=0.9:1, put it into a container, put the container into a water bath, and carry out Mechanical stirring, water bath temperature 28°C, rotating speed 65rpm, stirring time 40min, seal the mixed plasticizer in a rotary evaporator, use a vacuum pump to reduce the pressure of the rotary evaporator to -0.05MPa, heat the temperature to 85°C, and evaporate The rotational speed was 60 rpm, and the rotary steaming time was 35 minutes to obtain composite plasticizer B.
[0089] The preparation of the low melting point thermoplastic gas generating agent is the same as in Example 1.
[0090] Composition (mass percentage) of low melting point thermoplastic gas generating agent: modified ammonium nitrate (72%); Dihy...
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