Plastifying method of hydroxyl-terminated polymer

A technology of hydroxyl-terminated polymers and plasticizers, applied in the field of composite materials, can solve problems such as energy loss, poor HTPB compatibility, and poor plasticizing effects, and achieve excellent mechanical properties, good plasticizing effects, and improved Effect of energy output level

Inactive Publication Date: 2018-10-09
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the problem of poor plasticizing effect caused by the energy loss of pouring PBX caused by the inert plasticizer and the poor compatibility betw

Method used

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  • Plastifying method of hydroxyl-terminated polymer
  • Plastifying method of hydroxyl-terminated polymer
  • Plastifying method of hydroxyl-terminated polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) 20g of HTPB liquid with a relative molecular weight of 2000 is weighed and placed in a conical flask;

[0025] (2) Weigh 10g of A16, add it into HTPB, stir rapidly with a magnetic stirrer, the stirring rate is 500r / min, and the stirring time is 300s;

[0026] (3) The mixed liquid is vacuum treated at -0.91Kpa for 600s.

Embodiment 2

[0028] (1) take by weighing 20g relative molecular weight and be that the HTPB liquid of 3000 is placed in the round bottom flask;

[0029] (2) Weigh 20g of A16, add it into HTPB, stir rapidly with an electric mixer, the stirring rate is 300r / min, and the stirring time is 600s;

[0030] (3) The mixed liquid is vacuum treated at -0.92Kpa for 600s.

Embodiment 3

[0032] (1) taking by weighing 300g relative molecular weight is that the HTPB liquid of 5000 is placed in the kneader;

[0033] (2) Weigh 200g A16, add it into HTPB, and stir it with a kneader, the stirring rate is 50r / min, and the stirring time is 1800s;

[0034] (3) The mixed liquid is vacuum treated at -0.91Kpa for 900s.

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Abstract

The invention discloses a plastifying method of a hydroxyl-terminated polymer so as to plastify HTPB (hydroxyl-terminated polybutadiene) by taking A16 as a plastifier. A specific plastifying process is as follows: Step I, weighing HTPB and A16 according to a certain mass ratio; Step II, mixing and stirring the HTPB and A16: mixing the HTPB with the A16 in Step I, and quickly stirring the HTPB andthe A16 at a stirring rate of 50 to 1,000 r/min for 1 to 3,000 s; Step III, vacuumizing the stirred mixed liquid to remove bubbles for 1 to 2,000 s till the vacuum degree is -0.90 to 1.00 KPa. An energetic plastifier related in the treatment method provided by the invention can be well compatible with the hydroxyl-terminated polymer and also improve the energy output level of pouring a PBX explosive. The viscosity of a plastified bonding system is greatly reduced, and the mechanical property is higher than that of a bonding system plastified with a conventional inert plastifier.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a method for plasticizing a hydroxyl-terminated polymer. Background technique [0002] The rapid development and application of modern weapons, especially the increasing emphasis on high-efficiency damage of high-tech weapons, put forward higher and higher requirements for the energy and performance of explosives, that is, higher energy and excellent mechanical properties. Casting-curing polymer bonded explosive (casting PBX) is a mixed explosive with high-energy explosive as the main body and binder and plasticizer as the main carrier. The properties of the liquid phase carrier not only have an important impact on the various properties of PBX explosives (energy properties, mechanical properties, combustion properties, etc.), but also determine the molding process of PBX. The most mature binder currently used is hydroxyl-terminated polybutadiene (HTPB), and its pl...

Claims

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Application Information

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IPC IPC(8): C08J3/18C08L9/00C08K5/544C06B23/00
CPCC06B23/009C08J3/18C08J2309/00C08K5/544
Inventor 肖春张毅王德海郑保辉谢虓罗观李尚斌
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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