Double-wall sandwich structural microcapsule self-repairing rubber and preparation method thereof

A double-wall sandwich and microcapsule technology, which is applied in the field of self-repairing rubber with mesoporous molecular sieve synergistic double-wall sandwich structure microcapsules, can solve the problem of low contact probability between repair agent and catalyst, weak capillary siphon effect of microcracks, Problems such as the influence of mechanical properties of materials, to achieve the effect of increasing anti-fatigue and aging properties, increasing capillary siphon effect, and helping to save resources

Active Publication Date: 2013-12-25
沈阳双骥橡塑科技有限公司
View PDF4 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small contact probability between the repair agent and the catalyst, the repair efficiency of single-wall microcapsules is still relatively low, and excessive amounts of microcapsules and catalysts will affect the mechanical properties of the material
If double-wall microcapsules are used, although

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] (1) Mix 5 g of urea with 10 g of 37% formaldehyde solution in a three-necked flask, adjust the pH of the solution to 9 with triethanolamine, heat the solution to 70° C. and react for 1 hour to prepare a urea-formaldehyde resin prepolymer.

[0030] (2) Use a beaker to dilute 8g epoxy resin E-51 with 2g methyl ethyl ketone, 100ml deionized water, 0.5g curing agent resorcinol, 0.5g pH adjuster ammonium chloride, 1~2 drops of defoaming Add n-octanol and 0.5g of emulsifier sodium dodecylbenzene sulfonate to the diluted epoxy resin. Disperse at an emulsification speed of 3000r / min for about 20 minutes to form a stable oil-in-water (O / W) emulsion, then pour the emulsion into the urea-formaldehyde resin prepolymer, and adjust the initial pH of the system to about 3.5 with dilute hydrochloric acid. The temperature of the water bath was increased slowly, and after the solution temperature reached 60°C, the reaction was carried out for 2 hours, washed with a...

Example Embodiment

[0033] Example 2

[0034] (1) Mix 5 g of urea with 10 g of 37% formaldehyde solution in a three-necked flask, adjust the pH of the solution to 9 with triethanolamine, heat the solution to 70° C. and react for 1 hour to prepare a urea-formaldehyde resin prepolymer.

[0035] (2) Use a beaker to dilute 8g epoxy resin E-51 with 2g methyl ethyl ketone, 100ml deionized water, 0.5g curing agent resorcinol, 0.5g pH regulator ammonium chloride, 1~2 drops of defoaming Add n-octanol and 0.5g emulsifier sodium dodecylbenzene sulfonate to the diluted epoxy resin, and disperse for about 20 minutes at a stirring speed of 3000r / min to form a stable oil-in-water (O / W) Lotion. Then pour the emulsion into the aforementioned urea-formaldehyde resin prepolymer, and adjust the initial pH of the system to about 3.5 with dilute hydrochloric acid. The temperature of the water bath was increased slowly, and after the temperature of the solution reached 60°C, the reaction was carried out for 2 hours, w...

Example Embodiment

[0038] Example 3

[0039] (1) Mix 5 g of urea with 10 g of 37% formaldehyde solution in a three-necked flask, adjust the pH of the solution to 9 with triethanolamine, heat the solution to 70° C. and react for 1 hour to prepare a urea-formaldehyde resin prepolymer.

[0040] (2) Use a beaker to dilute 8g epoxy resin E-51 with 2g methyl ethyl ketone, 100ml deionized water, 0.5g curing agent resorcinol, 0.5g pH regulator ammonium chloride, 1~2 drops of defoaming Add n-octanol and 0.5g emulsifier sodium dodecylbenzene sulfonate to the diluted epoxy resin, and disperse for about 20 minutes at an emulsification speed of 3000r / min to form a stable oil-in-water (O / W) Emulsion, then pour the emulsion into the above urea-formaldehyde resin prepolymer, adjust the initial pH of the system to about 3.5 with dilute hydrochloric acid, slowly increase the temperature in the water bath, and after the solution temperature reaches 60℃, react for 2 h, and wash with acetone and distilled water t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a double-wall sandwich structural microcapsule self-repairing rubber and a preparation method thereof, and relates to a rubber and a preparation method thereof. The preparation method comprises the step of sequentially mixing a rubber matrix, stearic acid, zinc oxide, an accelerant, an anti-aging agent, carbon black, paraffin, a double-wall sandwich structural self-repairing microcapsule and a nano mesoporous molecular sieve in proportion, wherein the double-wall sandwich microcapsule is utilized and adopts urea-formaldehyde resin as the wall material, so that the sealing performance is high, and the manufactured walls have moderate hardness; the nano mesoporous molecular sieve utilized as a synergist is naturally inorganic filler which can improve the mechanical performance of the rubber, and a double coating brings higher heat-resisting stability, therefore, the contact probability of a repairing agent and the catalyst is greatly increased, and the influence of excessively added repairing agents and catalysts to the mechanical performance of the rubber can be avoided. Once microcrack appears in the material, a plurality of pores act to improve the capillary siphon effect of the microcrack to the microcapsule, thus the probability of the repairing agent and the curing agent to enter the microcrack is greatly increased, and as a result, the repairing effect is greatly improved.

Description

[0001] technical field [0002] The invention relates to a rubber preparation method, in particular to a preparation method of mesoporous molecular sieve synergistic double-wall sandwich structure microcapsule self-repairing rubber. [0003] Background technique [0004] With the advancement of science and technology, the mechanical properties of rubber have been greatly improved, and it has entered the ranks of engineering and functional materials from daily necessities materials, and is widely used in space exploration vehicles, artificial satellites, rockets, houses and bridge construction, automobiles and aircraft, etc. Machinery industry and engineering fields such as dams, electrical and electronics, and deep-sea diving. However, rubber is vulnerable to macroscopic and microscopic damage during use and under the influence of the surrounding environment. Cracks and microcracks are the main manifestations of microscopic damage. Microcracks are the starting po...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08L7/00C08L9/06C08L9/00C08L11/00C08L23/22C08L9/02C08L15/00C08L23/16C08L83/04C08L27/12C08L63/00C08L61/24C08K13/04C08K7/26C08K5/09C08K3/22C08K3/04C08G59/62B01J13/02
Inventor 王娜吴于虎孙冰张静
Owner 沈阳双骥橡塑科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap