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Structural adhesive capable of being cured at room temperature and used for composite sandwich panel, and preparation method of structural adhesive

A structural adhesive, room temperature curing technology, applied in the direction of adhesives, adhesive types, adhesive additives, etc., can solve the problems of poor mechanical properties, poor storage performance, expensive price, etc., and achieve good toughness and temperature resistance Good, significant synergistic effect

Active Publication Date: 2016-12-14
SYST EQUIP CO LTD OF THE 28TH RES INST LI YANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the defects in the prior art that most of the normal-temperature slab glue is polyurethane glue with poor mechanical properties, poor storage performance, high price, and easy to cause slab voids, the present invention provides a room-temperature-cured composite sandwich panel structural adhesive Agent and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Component A: Two-component A-type epoxy resin NPEL-128 (purchased from Nanya Group) 99%, defoamer BKY055 (purchased from Germany BAK) 1%;

[0030] Component B: reactive polyamide resin Epikure3140 (purchased from Hexion, USA) 37%, reactive polyamide resin V150 (purchased from Germany’s BASF) 36%, carboxyl-terminated liquid nitrile rubber CTBN 1300X8 (Shenzhen Jiadida Chemical Co., Ltd.) 18%, alicyclic amine type trimerization catalyst DMP-30 (Changzhou Shanfeng Chemical Co., Ltd.) 4%, silane coupling agent KH550 (purchased from Nanjing Qianqian Chemical Industry Co., Ltd.) 4%, antioxidant 264 (purchased from Shijiazhuang Yima Chemical) 1%.

[0031] The preparation method of the composite sandwich panel structural adhesive cured at room temperature comprises the following steps:

[0032] A. Stir bisphenol A epoxy resin and defoamer at a speed of 60 rpm at 25°C for 2.5 hours to obtain component A;

[0033] B. Stir the curing agent, toughening agent, curing accelerator, ...

Embodiment 2

[0036] Component A: Two-component A-type epoxy resin NPEL-128 (purchased from Nanya Group) 99.2%, defoamer BKY065 (purchased from Germany BAK) 0.8%;

[0037] Component B: active polyamide resin V150 (purchased from BASF, Germany) 78.5%, amine-terminated liquid nitrile rubber Hypro1300X16ATBN (Shenzhen Jiadida Chemical Co., Ltd.) 13%, alicyclic amine trimerization catalyst DMP-30 ( Changzhou Shanfeng Chemical Co., Ltd.) 4%, silane coupling agent KH560 (purchased from Nanjing Xiangqian Chemical) 4%, antioxidant 2264 (purchased from Shijiazhuang Yima Chemical) 0.5%.

[0038] The preparation method of the composite sandwich panel structural adhesive cured at room temperature comprises the following steps:

[0039] A. Stir bisphenol A epoxy resin and defoamer at a speed of 60 rpm at 25°C for 2.5 hours to obtain component A;

[0040] B. Stir the curing agent, toughening agent, curing accelerator, silane coupling agent and antioxidant at 30°C for 3 hours at a speed of 70 rpm to obta...

Embodiment 3

[0043] Component A: Two-component A-type epoxy resin NPEL-128 (purchased from Nanya Group) 99.3%, defoamer BKY066N (purchased from Germany BAK) 0.7%;

[0044] Component B: reactive polyamide resin V140 (purchased from BASF, Germany) 40%, reactive polyamide resin V125 (purchased from BASF, Germany) 39%, amine-terminated liquid nitrile rubber Hypro 1300X42ATBN (Shenzhen Jiadida Chemical Co., Ltd. ) 13.5%, alicyclic amine type trimerization catalyst DMP-30 (Changzhou Shanfeng Chemical Co., Ltd.) 3.5%, silane coupling agent KH560 (purchased from Nanjing Qianqian Chemical Industry) 3.3%, antioxidant 2264 (purchased from Shijiazhuang Yima Chemical Industry Co., Ltd. ) 0.4%, antioxidant 264 (purchased from Shijiazhuang Yima Chemical Industry) 0.3%.

[0045] The preparation method of the composite sandwich panel structural adhesive cured at room temperature comprises the following steps:

[0046] A. Stir bisphenol A epoxy resin and defoamer at a speed of 70 rpm at 25°C for 2 hours to...

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Abstract

The invention discloses a structural adhesive capable of being cured at room temperature and used for a composite sandwich panel, and a preparation method of the structural adhesive. The structural adhesive capable of being cured at room temperature and used for the composite sandwich panel comprises a component A and a component B according to a mass ratio of 100:(50-75), wherein the component A comprises the following components in percentage by mass: 98.5 to 99.9 percent of bisphenol A epoxy resin and 0.1 to 1.5 percent of a defoaming agent; the component B comprises the following components in percentage by mass: 65 to 80 percent of a curing agent, 10 to 25 percent of a toughening agent, 1 to 5 percent of a curing accelerator, 1 to 5 percent of a silane coupling agent and 0.2 to 1 percent of an antioxidant. The structural adhesive capable of being cured at room temperature and used for the composite sandwich panel, provided by the invention, has a wide use range, can select medium-temperature or normal-temperature curing according to requirements, has high mechanical properties, such as toughness and the like, and excellent temperature tolerance, and completely meets use conditions of national military standards.

Description

technical field [0001] The invention relates to a composite sandwich panel structural adhesive cured at room temperature and a preparation method thereof, belonging to the field of adhesives. Background technique [0002] The current cabins, caravans and refrigerated vehicles are composed of composite sandwich panels. The composite sandwich panel integrates two layers of skin, core material, heat insulation layer and frame through structural adhesive. During the use of the box body, it will experience high and low temperature, bumpy roads and other environments. Therefore, the structural adhesive is required to have good toughness and high and low temperature performance under the condition of ensuring strength, otherwise it will easily cause the skin of the composite sandwich panel. Problems such as detachment from the core material and bulging seriously affect the use of the box body. [0003] There are many kinds of structural adhesives used in composite sandwich panels...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J11/08C09J11/06C08G59/44
CPCC08G59/44C09J11/06C09J11/08C09J163/00C08L13/00C08K5/544C08K5/5435
Inventor 田阳魏国升胡迪周磊李胤
Owner SYST EQUIP CO LTD OF THE 28TH RES INST LI YANG
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