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Preparation method of carboxylated carbon nanotube modified pentaerythritol acrolein resin

The technology of pentaerythritol acrolein resin and acrolein resin is applied in the field of preparation of energetic materials, which can solve the problems of lack of active groups, poor dispersibility, easy agglomeration, etc., and achieves the improvement of fiber toughening effect, section elongation, and section The effect of elongation improvement

Active Publication Date: 2020-01-17
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

Carbon nanotubes are a kind of nanofiber material with excellent performance. However, there are certain difficulties in directly using carbon nanotubes to modify 123 resin. First, carbon nanotubes are nanomaterials and are easy to agglomerate, so they have poor dispersion in 123 resin. , the surface of carbon nanotubes lacks active groups and lacks strong interfacial interaction with the matrix, which is not conducive to improving the mechanical properties of the matrix material

Method used

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  • Preparation method of carboxylated carbon nanotube modified pentaerythritol acrolein resin
  • Preparation method of carboxylated carbon nanotube modified pentaerythritol acrolein resin
  • Preparation method of carboxylated carbon nanotube modified pentaerythritol acrolein resin

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Experimental program
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Effect test

Embodiment 1

[0032] First weigh 0.02g of carboxylated CNTs, and use an agate grinding rod to crush and grind the CNTs; weigh 50g of 123 resin, then mix the ground CNTs with 123 resin, and initially stir evenly; Ultrasonic dispersion treatment for 30 minutes; mechanical stirring method was used again for 15 minutes; next, 0.9 mL of DES was added to the mixture, stirred evenly, and then poured into a mold; finally, it was placed in a 60°C oven and cured for 8 hours to prepare the Carboxylated CNTs modified 123 resin samples.

Embodiment 2

[0034] Weigh 0.04g of carboxylated CNTs, crush and grind the CNTs with an agate grinding rod; weigh 100g of 123 resin, then mix the ground CNTs with 123 resin, and initially stir evenly; then use an ultrasonic instrument to ultrasonicate the mixture Disperse for 30 minutes; again use mechanical stirring for 15 minutes; then add 1.8mL of DES to the mixture, stir evenly, and then pour it into a mold; finally put it in a 60°C oven and cure it for 8 hours to prepare carboxyl NaCNTs modified 123 resin samples.

Embodiment 3

[0036] Weigh 0.03g of carboxylated CNTs, crush and grind the CNTs with an agate grinding rod; weigh 100g of 123 resin, then mix the ground CNTs with 123 resin, and initially stir evenly; then use an ultrasonic instrument to ultrasonicate the mixture Disperse for 30 minutes; again use mechanical stirring for 15 minutes; then add 1.8mL of DES to the mixture, stir evenly, and then pour it into a mold; finally place it in a 60°C oven and cure for 8 hours to prepare 0.03 wt% carboxylated CNTs modified 123 resin samples.

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Abstract

The invention provides a preparation method of a carboxylated carbon nanotube modified pentaerythritol acrolein resin, and belongs to the technical field of energetic materials. The preparation methodcomprises the following steps: step 1, crushing and grinding carboxylated carbon nanotubes by adopting an agate grinding rod; 2, mixing the carboxylated carbon nanotubes ground in the step 1 with pentaerythritol acrolein resin, and preliminarily and uniformly stirring; 3, carrying out ultrasonic dispersion treatment on a mixture obtained in the step 2 by using an ultrasonic instrument; 4, stirring the mixture subjected to dispersion treatment in the step 3 by adopting a mechanical stirring method; 5, adding diethyl sulfate into the mixture obtained in the step 4, uniformly stirring, and pouring into a mold; and 6, putting the mixture obtained in the step 5 into a drying oven, and carrying out curing treatment to prepare the carboxylated carbon nanotube modified pentaerythritol acrolein resin.

Description

technical field [0001] The invention belongs to the field of energetic material preparation, and in particular relates to a preparation method of pentaerythritol acrolein resin modified by carboxylated carbon nanotubes. Background technique [0002] Pentaerythritol acrolein resin (also known as 123 resin) is used as the adhesive for many thermosetting explosive parts that require high shape stability. 123 resin is an adhesive prepolymer formed by chemical crosslinking of pentaerythritol and acrolein in the presence of an acid catalyst. It is a transparent viscous liquid resin. Polymerization achieves curing. The catalyst is generally selected from diethyl sulfate within an appropriate acid value range (acid value less than 1%). The cured 123 resin is a highly transparent and non-porous hard resin with good mechanical properties, heat resistance, and chemical corrosion resistance. plastic. This also endows polymer bonded explosives (PBX) with good mechanical properties, wh...

Claims

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Application Information

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IPC IPC(8): C08L29/00C08K3/04C08K9/04C08J3/20
CPCC08J3/203C08J2329/00C08K3/041C08K9/04
Inventor 刘涛郑保辉谢虓肖春黄川
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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