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Quick self-repair type polymer composite material at room temperature

A composite material and polymer technology, which is applied in the field of rapid self-healing polymer composite materials at room temperature, can solve the problems of large amount of repairing agent carrier, decline in material mechanical properties, slow self-healing rate, etc., and achieve good bonding repair effect , reduced content, good compatibility

Inactive Publication Date: 2011-05-04
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in this technology, such as the addition of a large amount of repair agent carrier, resulting in a decrease in the mechanical properties of the material, slow self-repair rate at room temperature or low temperature, and low repair efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Preparation of microcapsules containing liquid epoxy resin: (1) 15 parts by weight of styrene-maleic anhydride copolymer sodium salt is added to 500 parts by weight of deionized water, and the core material bisphenol A 20 parts by weight of epoxy resin E-51 and 5 parts by weight of wall material E-51 epoxy acrylate, 15 parts by weight of sodium methacrylate hydroxypropyl sulfonate, 0.5 parts by weight of pentaerythritol triacrylate and photoinitiator benzoin dimethyl A mixture of 0.2 parts by weight of ether was emulsified for 10 minutes to obtain an oil-in-water emulsion.

[0020] (2) Immediately irradiate the oil-in-water emulsion obtained in step (1) with ultraviolet light (power 1500w, lamp distance 10cm) for 10 minutes to make the surface of the oil-in-water solidify into a film, add a large amount of water to repeatedly settle and wash, and the microcapsule precipitate Vacuum freeze-drying to obtain a microcapsule product, the average diameter of the microcapsule ...

Embodiment 2

[0022] Preparation of hollow microcapsules loaded with boron trifluoride ether: (1) 9 parts by weight of polystyrene-maleic anhydride copolymer sodium salt and NaHCO 3 Add 0.5 parts by weight into 300 parts by weight of deionized water, add 12 parts by weight of wall material methyl methacrylate, 6 parts by weight of hexanediol diacrylate, 0.6 parts by weight of pentaerythritol triacrylate, methyl A mixture of 0.6 parts by weight of acrylic acid and 0.2 parts by weight of photoinitiator benzoin dimethyl ether was emulsified for 5 minutes to obtain a bubble emulsion wrapped in photosensitive monomers.

[0023] (2) Immediately irradiate the emulsion obtained in step (1) with ultraviolet light (power 1500W, lamp distance 10cm) for 5 minutes to solidify the photosensitive monomer layer on the surface of the bubbles to form a film, add a large amount of water to wash repeatedly, and the hollow microcapsules float After vacuum freeze-drying, a hollow microcapsule product is obtaine...

Embodiment 3

[0026] The preparation of the porous carrier loaded with boron trifluoride ether: After vacuum-drying sisal fiber, activated carbon fiber and carbon black, weigh 1 part by weight respectively in a glass bottle with a branch tube, plug it tightly with a rubber stopper, and vacuumize. Boron trifluoride ether was added from the rubber stopper with a syringe until the sample was completely submerged. Put the glass bottle into a vacuum desiccator, evacuate it again, then place it at room temperature for 24 hours, take it out, carefully remove the upper layer solution, filter to obtain a carrier with a cationic curing agent, and add the carrier to a solution containing 2.5% by weight under stirring. In 10 parts by weight of polystyrene dichloromethane solution, the suspension was added dropwise to 100 parts by weight of absolute ethanol under full stirring, vigorously stirred, suction filtered, rinsed three times with absolute ethanol, and dried naturally. The loading of boron ether...

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Abstract

The invention provides a room temperature fast self-repairing type polymer composite which consists of the components with the weight portions as follows: 80-130 portions of polymer matrix, 1-20 portions of capsules containing liquid epoxy resin and 0.5-5 portions of carriers containing cation curing agent. The room temperature fast self-repairing type polymer composite has the characteristics ofsimple manufacturing, fast repairing speed, capability of keeping repairing capability for a long time and the like, and the room temperature fast self-repairing type polymer composite can be widely applied to the self repair of parts and components in the fields of machine, electron, traffic and transportation and the like, thereby prolonging the service life and the using stability of the polymer material.

Description

technical field [0001] The invention relates to a rapid self-healing polymer composite material at room temperature. Background technique [0002] Polymer matrix composites have been widely used in construction, machinery, microelectronics, transportation and other industries. Under repeated heat and force loading, polymer-based composites are prone to microcracks inside the matrix, and crack propagation and aggregation will lead to matrix damage or interlayer cracking of the composite material, resulting in a serious loss of the integrity of the material structure. These micro-damages often occur deep inside the material structure and are difficult to detect and repair. Therefore, early repair of cracks, especially self-healing, is of great significance for prolonging the service life and improving the stability of composite materials. [0003] In recent years, a variety of methods have been developed to endow polymer composites with self-healing ability, among which the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L67/06C08L61/06C08L75/04C08L77/00C08L33/02C08K9/00C08K5/55C08K3/24C08K3/38C08K3/32
Inventor 容敏智肖定书章明秋
Owner SUN YAT SEN UNIV
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