Adhesive, its preparation method and application method

A technology of adhesives and toughening agents, applied in the direction of adhesives, chemical instruments and methods, adhesive types, etc., can solve the problem of low initial viscosity of adhesives, achieve wide use temperature range, high bonding strength, The effect of improving appearance performance

Active Publication Date: 2012-04-18
BYD CO LTD
View PDF3 Cites 35 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the problem of low initial viscosity of the adhesive in the prior art, the present invention disclos

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] The present invention also discloses a preparation method of the above-mentioned adhesive, including: mixing the main resin, toughening agent and filler, grinding and defoaming to obtain a resin component; and using a normal temperature curing agent as the curing component to obtain the adhesive. The above-mentioned mixing and grinding methods are well-known in the art, for example, they can be rolled into a uniform paste on a three-roll mill.

[0029] In the above method, when one or more of the coupling agent, thixotropic agent, and heat-resistant agent is contained, one or more of the coupling agent, thixotropic agent, and heat-resistant agent can be combined with the host resin , Toughener and filler are mixed together, ground and defoamed to obtain resin component. Similarly, when it is necessary to use a high temperature curing agent and a curing accelerator, it also includes mixing the high temperature curing agent and the curing accelerator with the normal temperat...

Example Embodiment

[0034] Example 1

[0035] This example is used to illustrate the adhesive disclosed in the present invention and its preparation method.

[0036] Combine 80 parts by weight of epoxy resin E-42 (produced by Guangzhou Hongchang Company, with an epoxy equivalent of 280) and 20 parts by weight of epoxy resin E-12 (produced by Guangzhou Hongchang Company, with an epoxy equivalent of 655 and a softening point of 80 °C) mixed with 12 parts by weight of barite, 20 parts by weight of epoxy soybean oil, and 2 parts by weight of aminopropyltriethoxysilane, rolled into a uniform paste on a three-roll mill and defoamed to obtain a resin component .

[0037] Take 15 parts by weight of triethylenetetramine as the curing component. The above-mentioned resin component and curing component together constitute the adhesive S1.

Example Embodiment

[0038] Example 2

[0039] This example is used to illustrate the adhesive disclosed in the present invention and its preparation method.

[0040] The epoxy resin with epoxy equivalent of 180, epoxy resin with epoxy equivalent of 475, and amino-terminated polyetheramine are mixed uniformly in a weight ratio of 80:20:50, and then rapidly stirred at 150°C for 2h to obtain amino-terminated Polyetheramine modified epoxy resin prepolymer.

[0041] Combine 60 parts by weight of epoxy resin E-54 (produced by Guangzhou Hongchang Company, with an epoxy equivalent of 180) and 40 parts by weight of epoxy resin E-12 (produced by Guangzhou Hongchang Company, with an epoxy equivalent of 655 and a softening point of 80 ℃) with 15 parts by weight of calcium carbonate, 18 parts by weight of amino-terminated polyetheramine modified epoxy resin prepolymer, 8 parts by weight of polyurethane (isocyanate equivalent of 2000), 10 parts by weight of carboxyl-terminated nitrile rubber (acrylonitrile content ...

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
Softening pointaaaaaaaaaa
Softening pointaaaaaaaaaa
Epoxy valueaaaaaaaaaa
Login to view more

Abstract

The invention provides an adhesive, its preparation method and an application method. The adhesive contains a resin ingredient and a cured ingredient, wherein the resin ingredient contains a main resin, a flexibilizer and a filling material. The main resin contains a first epoxy resin and a second epoxy resin, wherein epoxy equivalent of the first epoxy resin is 150-300 and softening point of the second epoxy resin is 65-100 DEG C. The cured ingredient contains a normal-temperature curing agent. After the adhesive is coated on the surface of steel plates, the bonding strength between the steel plates is very high without the need of spot welding or riveting.

Description

technical field [0001] The invention relates to an adhesive and a preparation method and a use method thereof, in particular to a vehicle structural adhesive and a preparation method and a use method thereof. Background technique [0002] At present, the welding method is mainly used for the connection of automobile structural parts, but with the increasing requirements of automobiles for reducing weight, reducing cost and improving impact resistance, the welding method can no longer meet these requirements; the welding method will be glued or glued. It is replaced by a combination of bonding and welding. Among them, the adhesive commonly used in bonding is structural adhesive. [0003] Traditional structural adhesives are available in materials such as epoxy, rubber, acrylate and polyurethane. Among them, epoxy resin has been widely used because of its excellent mechanical properties and can well meet the requirements of the current automobile manufacturing process. [0...

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): C09J163/00B32B37/12
Inventor 唐富兰赖学平
Owner BYD CO LTD
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