A self-absorbing heat-absorbing core-shell toughening material, a thermally broken structural adhesive film containing a self-absorbing heat-absorbing core-shell toughening material, and its preparation method and application

A toughening and core-shell technology, which is applied in the field of thermally broken structural adhesive film and its preparation, can solve the problems that cannot meet the requirements of porosity and bonding strength, and achieve excellent cold and hot cycle stability, high toughness, The effect of excellent heat breaking effect

Active Publication Date: 2021-09-07
INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing toughening materials cannot meet the requirements of the thermal breakable structural adhesive film used in the extreme space and wide temperature difference environment for the porosity and bonding strength, and the existing aerospace carbon mesh and honeycomb structure bonding thermal breakable structural adhesive The problem that the film cannot be applied in an environment with extreme space and wide temperature difference, the invention provides a self-absorbing core-shell toughening material, a thermally broken structural adhesive film containing a self-absorbing core-shell toughening material, its preparation method and application

Method used

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  • A self-absorbing heat-absorbing core-shell toughening material, a thermally broken structural adhesive film containing a self-absorbing heat-absorbing core-shell toughening material, and its preparation method and application
  • A self-absorbing heat-absorbing core-shell toughening material, a thermally broken structural adhesive film containing a self-absorbing heat-absorbing core-shell toughening material, and its preparation method and application
  • A self-absorbing heat-absorbing core-shell toughening material, a thermally broken structural adhesive film containing a self-absorbing heat-absorbing core-shell toughening material, and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This example provides a self-absorbing core-shell toughening material and its preparation method:

[0036] Weigh 20 parts of aluminum particles with an average particle size of 15 μm and 80 parts of polyarylethersulfone resin containing active end groups, the structural formula of which is:

[0037]

[0038] The active end group is a hydroxyl group, where n=33;

[0039] Weigh 0.2 parts of interface modifier-3-glycidyl etheroxypropyl trimethoxysilane, 0.5 parts of catalyst-triphenylphosphine, 2 parts of emulsifier-sodium dodecylbenzenesulfonate and 1000 parts of pH 6.0-7.0 deionized water; mix dichloroethane and dimethylformamide at a volume ratio of 1:1, and measure 300 parts of the resulting mixed solvent.

[0040] Mix the metal particles, the interface modifier and 150 parts of mixed solvent into the reaction vessel, stir at room temperature for 1 hour at 2000 r / min under the condition of nitrogen, and leave the reaction system to stand and dry for 5 hours to obta...

Embodiment 2

[0043] This example provides a thermally broken structural adhesive film containing a self-absorbing core-shell toughening material and its preparation method:

[0044] Weigh 25 parts of the self-absorbing heat-absorbing core-shell toughening material prepared in Example 1, 60 parts of cyanate resin-4,4'-dicyanate diphenylmethane, 15 parts of epoxy resin-bisphenol A type Epoxy resin, 2.5 parts of reactive diluent-alicyclic glycidyl ether, 2 parts of filler-fumed silica H-18 and 0.3 parts of accelerator-1,3-diphenylurea.

[0045] Mix and heat cyanate resin and epoxy resin to 120°C to dissolve, stir at 1300r / min, maintain the temperature of the resulting mixed system at 150°C, add self-absorbing core-shell toughening material and reactive diluent, stir at 1300r / min for 3.5 h. After the mixed system is homogeneous, immediately transfer to a closed kneader to add fillers and accelerators, and mix for 30 minutes to obtain a light gray viscous compound; maintain the temperature of t...

Embodiment 3

[0054] This example provides a self-absorbing core-shell toughening material and its preparation method:

[0055] Weigh 10 parts of iron particles with an average particle size of 30 μm and 90 parts of polyarylethersulfone resin containing active end groups, the structural formula of which is:

[0056]

[0057] The active end group is a hydroxyl group, where n=33;

[0058] Weigh 0.2 parts of interface modifier-3-methacryloxypropyltrimethyloxysilane, 0.5 parts of catalyst-sodium borohydride, 2 parts of emulsifier-sodium stearate and 1000 parts of pH 6.0~ 7.0 deionized water, dichloroethane and dimethylformamide were mixed at a volume ratio of 1:1, and 300 parts of the resulting mixed solvent were measured.

[0059] Mix the metal particles, the interface modifier and 150 parts of mixed solvent into the reaction vessel, stir at room temperature at 2000r / min for 1.5h under the condition of nitrogen gas, and let the reaction system stand still and dry for 5h to obtain a light g...

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Abstract

The invention relates to a self-absorbing core-shell toughening material, a thermally broken structural adhesive film containing the self-absorbing core-shell toughening material, a preparation method and application thereof, and belongs to the technical field of adhesives. In order to solve the problem that the existing toughening materials cannot meet the extreme wide temperature difference environment and the existing thermally broken structural adhesive film cannot be applied in the extreme space wide temperature difference environment, the present invention provides a self-absorbing core-shell toughening material, the shell of which is Polyaryl ether sulfone resin containing active end groups, the core layer is clustered metal particles, the toughening material has high Tg and high toughness, the invention combines the toughening material with cyanate resin, epoxy resin, reactive diluent, Fillers and accelerators are pre-polymerized and blended and pressed into a thermally broken structural adhesive film. The resulting thermally broken structural adhesive film has high thermal breaking efficiency, high bonding strength, and good stability in cold and heat cycles in extreme environments. It is applied to deep space spacecraft The field can meet the actual requirements of the bonding performance between the carbon mesh and the honeycomb in the special structure of the future advanced aerospace vehicle and the use in extreme environments.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a self-absorbing core-shell toughening material, a thermally broken structural adhesive film containing the self-absorbing core-shell toughening material, a preparation method and application thereof. Background technique [0002] Some special structures of advanced deep space spacecraft in the future, such as lightweight primary and secondary load-bearing structural parts such as cabin structural panels and solar wing substrates, need to withstand more severe exposure space environment assessments, such as -150°C to 200°C cold In extreme space environments such as thermal alternation, cosmic ray radiation, and high vacuum, this type of component is designed with a skinned carbon grid / honeycomb "sandwich" structure. Therefore, the bonding strength of the adhesive and the reasonable bonding method determine the overall performance of this type of "sandwich" structura...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J11/04C09J7/10C09J7/30C09J179/04C09J163/00B01J13/02
CPCB01J13/02C08K2003/0806C08K2003/0812C08K2003/0856C08L2203/20C09J11/04C09J179/04C09J7/10C09J7/30C08L63/00C08K13/06C08K9/10C08K3/08C08K7/26
Inventor 王冠付刚高堂铃邵南王雪松吴健伟匡弘付春明
Owner INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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