Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-temperature-resistant thin-wall glass cloth honeycomb core strip adhesive as well as preparation method and application thereof

A technology of glass cloth and high temperature resistance, which is applied in the direction of adhesives, film/sheet adhesives, non-polymer adhesive additives, etc., and can solve the problem of poor maturity and stability of high temperature resistant paper and increase core strip adhesive Viscosity, core strip viscosity increase and other problems, to achieve the effect of improving penetration, increasing the amount of addition, and increasing the viscosity

Inactive Publication Date: 2020-12-04
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Honeycomb substrates with a temperature resistance above 300°C include metal foil, glass cloth, and high-temperature-resistant paper, but the density of metal foil is too high to meet the needs of light weight; high-temperature-resistant paper (PBO paper or PI paper, etc.) is mature and The stability is not good
Commonly used modifiers for toughening and modifying thermosetting resins include rubber elastomers and thermoplastic resins. Although rubber elastomers have good manufacturability, their temperature resistance grades are low; thermoplastic resins have high temperature resistance grades, but they dissolve in the main resin. Increase the viscosity of the core strip glue, especially in order to ensure a good toughening effect, it is necessary to add a sufficient amount of thermoplastic resin, which will lead to a substantial increase in the viscosity of the core strip glue, and serious stringing will occur when the core strip glue is printed, resulting in The honeycomb has a large number of defects

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-temperature-resistant thin-wall glass cloth honeycomb core strip adhesive as well as preparation method and application thereof
  • High-temperature-resistant thin-wall glass cloth honeycomb core strip adhesive as well as preparation method and application thereof
  • High-temperature-resistant thin-wall glass cloth honeycomb core strip adhesive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0040] In a preferred embodiment of the present invention, the solvent includes any one of acetone, butanone, cyclohexane, tetrahydrofuran, and diethylene glycol dimethyl ether, preferably acetone, which has a low boiling point, low toxicity, and low cost. According to the present invention, there is provided a method for preparing high temperature resistant ultra-thin glass cloth honeycomb core strip glue, comprising the following steps:

[0041] (1) Add 1 / 4-1 / 3 part of micron-scale toughening agent to the reactive agent, dissolve the toughening agent in the reactive agent in the range of 100-150°C, cool down to below 80°C, and remove the remaining The micron-scale toughening agent and nano-scale thixotropic agent are added to the reactive agent, and high-speed stirring is dispersed to obtain component A

[0042] (2) Under the condition of stirring at room temperature, add the polyimide resin and component A into the solvent to dissolve and disperse to obtain a thin-walled glas...

Embodiment 1

[0045] ingredient name content Remark thermosetting polyimide 100g Alkynyl capping Alkynyl benzoxazine resin 40g thermoplastic polyimide 25g Particle size 18μm Nano silica 10g acetone 300g

[0046] 1. Preparation of component A: Weigh 7g of thermoplastic polyimide (P84) and add it to 40g of alkynyl benzoxazine, heat to 120°C and keep it warm until the thermoplastic polyimide is dissolved and transparent, cool down to below 80°C, add 18g thermoplastic polyimide and 10g nano-silica, high-speed dispersion is enough.

[0047] 2. Preparation of high-temperature-resistant core strip glue: under the condition of high-speed stirring at room temperature, add 75g of component A and 100g of thermosetting polyimide resin into 300g of acetone, dissolve, mix and disperse evenly.

[0048] The tensile shear strength (GB / T7124-2008) of the high temperature-resistant core strip at room temperature is 25.3MPa, and the tensile shear streng...

Embodiment 2

[0052] ingredient name content Remark thermosetting polyimide 100g Norbornene-capped Alkynyl benzoxazine resin 60g polyamideimide 20g Particle size 12um Nano silica 5g butanone 210g

[0053] 1. Preparation of component A: Weigh 5g of polyamideimide and add it to 60g of alkynyl benzoxazine, heat to 120°C and keep it warm until the polyamideimide is dissolved and transparent, cool down to below 80°C, and add 15g of polyamide Imide and 5g nano-silica can be dispersed evenly at high speed.

[0054] 2. Preparation of high-temperature-resistant core strip glue: under the condition of high-speed stirring at room temperature, add 85g of component A and 100g of thermosetting polyimide resin into 210g of acetone, dissolve, mix and disperse evenly.

[0055] The tensile shear strength (GB / T7124-2008) of high temperature resistant core strip glue at room temperature is 27.3MPa, and the tensile shear strength at 300°C reaches 12.8MPa...

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

PropertyMeasurementUnit
Strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a high-temperature-resistant thin-wall glass cloth honeycomb core strip adhesive as well as preparation and an application thereof, and belongs to the technical field of honeycomb preparation. According to the invention, the rheological characteristics of the core strip adhesive are controlled by utilizing the characteristics that thermoplastic resin particles are insoluble at normal temperature and soluble at high temperature in the active modifier. The thermoplastic resin is insoluble at normal temperature, so that the addition amount of the thermoplastic resin can be remarkably increased, the wiredrawing phenomenon caused after the thermoplastic resin is dissolved is avoided, and the printing quality of the core strip adhesive is improved. The thermoplastic resin is dissolved in the heating curing process, the viscosity of the core strip adhesive is greatly improved, the phenomenon that the core strip adhesive permeates towards the back of a glass cloth basematerial under the action of curing pressure is avoided, the toughness of the high-temperature-resistant core strip adhesive can be remarkably improved, and the strength of honeycomb nodes is improved.

Description

technical field [0001] The invention relates to a high-temperature-resistant thin-walled glass cloth honeycomb core strip adhesive and its preparation and application, belonging to the technical field of honeycomb preparation. High temperature resistance refers to the ability of the core strip adhesive to withstand a temperature of 300 ° C. Thin-wall refers to the thickness of the glass cloth 0.03-0.08mm, preferably 0.05mm. Background technique [0002] Honeycomb sandwich structure composite materials are widely used because of their advantages such as high specific strength, good impact resistance, vibration reduction, wave penetration, and strong designability, especially in the field of aerospace. One of the indispensable structural materials. With the continuous improvement of application requirements, the requirements for light weight and temperature resistance of composite materials are also continuously improved. At present, in the honeycomb sandwich structure, the ...

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): C09J179/08C09J161/34C09J179/04C09J11/04C09J7/21C09J7/30
CPCC08K2201/011C08L2201/08C08L2205/02C08L2205/025C08L2205/03C09J11/04C09J179/08C09J179/085C09J2400/143C09J2479/08C09J7/21C09J7/30C08L61/34C08L79/08C08K3/36C08L79/04C08K3/04
Inventor 张东霞赵伟栋赵培晔崔超赵云峰孙宏杰樊孟金陈薇张云鹭
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com