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Self-heat-absorption core-shell toughening material, thermal-breaking structure adhesive film containing self-heat-absorption core-shell toughening material and preparation method and application of thermal-breaking structure adhesive film

A toughening and core-shell technology, 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 high toughness, high Tg, and high bonding strength Effect

Active Publication Date: 2020-08-25
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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  • Self-heat-absorption core-shell toughening material, thermal-breaking structure adhesive film containing self-heat-absorption core-shell toughening material and preparation method and application of thermal-breaking structure adhesive film
  • Self-heat-absorption core-shell toughening material, thermal-breaking structure adhesive film containing self-heat-absorption core-shell toughening material and preparation method and application of thermal-breaking structure adhesive film
  • Self-heat-absorption core-shell toughening material, thermal-breaking structure adhesive film containing self-heat-absorption core-shell toughening material and preparation method and application of thermal-breaking structure adhesive film

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-heat-absorption core-shell toughening material, a thermal-breaking structure adhesive film containing the self-heat-absorption core-shell toughening material and a preparation method and application of the thermal-breaking structure adhesive film, and belongs to the technical field of adhesives. The problems that an existing toughening material cannot meet the requirement for an extremely-wide temperature difference environment and an existing thermal-breaking structural adhesive film cannot be applied to the extremely-wide temperature difference environment aresolved. The invention provides a self-heat-absorption core-shell toughening material, wherein the shell layer is polyether sulphone resin containing an active end group; the core layer is bundled metal particles; the toughening material has high Tg and high toughness; according to the invention, the toughening material is pre-polymerized and blended with cyanate ester resin, epoxy resin, an active diluent, a filler and an accelerant and is pressed into a thermal-breaking structural adhesive film; the obtained thermal breaking structure adhesive film is high in thermal breaking efficiency, high in bonding strength and good in extreme environment cold and hot circulation stability, and can meet the actual requirements for the bonding performance between a carbon net and a honeycomb in a special structure of a future advanced aerospace craft and extreme environment use when being applied to the field of deep space spacecrafts.

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 Applications(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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