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Non-ester plasticizer-containing energetic material casting curing system and curing method thereof

A technology of ester plasticizer and curing method, which is applied in the direction of non-explosive/non-thermal agent components, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of reducing safety and increasing sensitivity, and achieve safety Enhanced performance, easy handling, and mild reaction conditions

Inactive Publication Date: 2015-07-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this system must be cured at high temperature. The high-temperature curing preparation method adopted will cause the energetic material CL-20 to undergo crystal transformation, which will significantly increase the sensitivity and reduce the safety during use.

Method used

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  • Non-ester plasticizer-containing energetic material casting curing system and curing method thereof
  • Non-ester plasticizer-containing energetic material casting curing system and curing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Recipe: Dissolve the curing catalyst T-12 in the plasticizer naphtha first, and prepare a solution with a concentration of 5% by weight. Take 0.08g of the solution; take 5.97g of the high molecular prepolymer HTPB (number average molecular weight 2630 , hydroxyl value 0.92mmol / g, trifunctionality), 13.44g plasticizer naphtha, 0.49g curing agent TDI, 0.02g bonding agent MAPO; the corresponding formula in parts by weight is shown in Table 1.

[0056] Curing: Add the above weight of HTPB and naphtha into a 100mL beaker, stir well for 10 minutes to form a colorless transparent homogeneous liquid; add the above weight of MAPO, stir for 20 minutes; then add 0 of the above weight of TDI, T-12 Naphtha solution, stirred for 20 minutes, poured into the pouring box, took it out after vacuuming to make it level, repeated three times, the total vacuum defoaming time was 30 minutes; then put it in the curing box for room temperature curing for 6 days, took it out, and placed it Store...

Embodiment 2

[0058] Recipe: first dissolve the curing catalyst TEPB in the plasticizer liquid paraffin to make a solution with a concentration of 5% by weight, take 0.06g of the solution; take 9.37g of high molecular weight prepolymer PET (number average molecular weight 2950, ​​hydroxyl value 59.37mgKOH / g, trifunctionality), 9.37g plasticizer liquid paraffin, 1.16g curing agent IPDI, 0.04g bonding agent HX-874; the corresponding formula in parts by weight is shown in Table 1.

[0059] Curing: Take the above weight of PET and liquid paraffin into a 100mL beaker, stir thoroughly for 10 minutes to form a colorless transparent homogeneous liquid; add the above weight of HX-874, stir for 10 minutes; then add the above weight of IPDI, TEPB liquid Paraffin wax solution, stirred for 10 minutes and then poured into the pouring box, taken out after vacuuming to make it level, repeated three times, the total vacuum defoaming time is 60 minutes, put it in the curing box for 7 days after curing at room...

Embodiment 3

[0061] Recipe: first dissolve the curing catalyst TPB in the plasticizer BuNENA to make a solution with a concentration of 5% by weight, take 0.04g of the solution; take 7.70g of high molecular weight prepolymer PET (number average molecular weight 4215, hydroxyl value 25.92 mgKOH / g, difunctionality), 11.54g plasticizer BuNENA, 0.46g curing agent MDI, 0.2g crosslinking agent TME, 0.06g bonding agent tetraethylenepentamine; for the corresponding formula in parts by weight, see Table 1.

[0062] Curing: Add the above weight of HTPB, BuNENA and TME into a 100mL beaker, and stir thoroughly for 5 minutes to form a colorless transparent homogeneous liquid; add the above weight of tetraethylenepentamine and stir for 5 minutes; then add the above weight of MDI, The BuNENA solution of TPB, stirred for 40 minutes, poured into the pouring box, took it out after vacuuming to make it level, repeated three times, the total vacuum defoaming time was 15 minutes, put it in the curing box for 5...

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Abstract

The present invention provides an energetic material casting curing system of a non-ester plasticizer, and a curing method thereof. The casting curing system comprises a polymer prepolymer, a plasticizer, a curing agent and the like, wherein a weight part ratio of the polymer prepolymer to the plasticizer to the curing agent is 100:50-300:5-20, the polymer prepolymer is a hydroxyl terminated polymer prepolymer with more than two functionalities, the plasticizer is a non-ester plasticizer, and the curing agent is a diisocyanate curing agent. The curing method comprises: uniformly mixing various components, pouring into a mold, carrying out vacuum deaeration, and carrying out a curing reaction. According to the present invention, the non-ester plasticizer of the energetic material casting curing system does not have energetic material solubility so as to ensure safety and meet high solid content requirements of the energetic material; the curing method has characteristics of simple operation, safety and effectiveness; and the cured cross-linking network structure is controllable, processing performances and mechanical properties are excellent, a working life is long, and performances of the energetic material can not be affected.

Description

technical field [0001] The invention relates to a pouring and curing system for energetic materials, and more particularly, to a casting and curing system for energetic materials containing non-ester plasticizers and a curing method thereof. Background technique [0002] The casting-curing system of energetic materials is a polymer composite material with binder as the matrix and filled with energetic materials, in which the binder skeleton plays an important role. At present, the traditional plasticizers used in casting curing systems are generally ester plasticizers, such as dioctyl sebacate (DOS), dioctyl adipate (DOA) and 8-methylnonyl nonanoate (IDP). These plasticizers have a good plasticizing effect on a variety of commonly used energetic materials, such as inorganic oxidant ammonium dinitramide (ADN), ammonium perchlorate (AP) and metal fuel aluminum powder (Al). Low, excellent processability, solid content up to 85-92%wt. However, traditional ester plasticizers a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C09J175/08C09J11/06C08G18/66C08G18/48C08G18/32C08G18/62C06B23/00
Inventor 朱艳丽焦清介张朴王静思张弛郭学永任慧臧充光李楠
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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