Single-component shock-resistant low-viscosity structural adhesive and preparation method thereof
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An impact-resistant, low-viscosity technology, used in the field of structural adhesives, can solve the problems of high brittleness and high adhesive viscosity, and achieve the effect of reducing viscosity, low viscosity, and improving flexibility and impact resistance.
Inactive Publication Date: 2014-10-08
YANTAI SEAYU NEW MATERIALS CORP LTD
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Problems solved by technology
Mainly solve the problem of high viscosity and high brit
Method used
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Embodiment 1
[0020] Example 1: Prepare a one-component impact-resistant low-viscosity structural adhesive according to the following table and the following steps.
[0021] (1) Mix 35g of phenolic resin, 30g of bisphenol F resin EP-4901E, and 18g of toughening agent polyetheramine D2000, stir for 1 hour, and control the temperature at 15°C-30°C.
[0022] (2) Add 9g of dicyandiamide curing agent while stirring, continue stirring for 1 hour after adding, and control the temperature at 15°C-30°C.
[0023] (3) Add 7g of benzyl dimethyl urea accelerator while stirring, stir for 0.5h, and control the temperature at 15°C-30°C.
[0024] (4) Add 8g of 1,6-hexanediol diglycidyl ether diluent, 0.5g of KH550 (γ-aminopropyltriethoxysilane) coupling agent and 0.5g of titanium dioxide to obtain an impact-resistant low-viscosity structural adhesive.
[0025]
[0026]
Embodiment 2
[0027] Example 2: Prepare a one-component impact-resistant low-viscosity structural adhesive according to the following table and steps.
[0028] (1) Mix 40g of bisphenol A epoxy resin EPON828, 10g of bisphenol F resin EP-4901E, and 20g of toughening agent polyetheramine D400, stir for 1 hour, and control the temperature at 15°C-30°C.
[0029] (2) Add 9g of dicyandiamide curing agent while stirring, continue stirring for 1 hour after adding, and control the temperature at 15°C-30°C.
[0030] (3) Add 8g of Fuji Chemical 1020 latent amine accelerator while stirring, stir for 0.5h, and control the temperature at 15°C-30°C.
[0031] (4) Add 0.5g KH560 (glycidoxytrimethoxysilane) coupling agent and 0.5g titanium dioxide to obtain impact-resistant low-viscosity structural adhesive.
[0032]
Embodiment 3
[0033] Embodiment 3: Prepare a one-component impact-resistant low-viscosity structural adhesive according to the ratio in the table below and the steps in Embodiment 1.
[0034]
[0035]
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Abstract
The invention relates to a structural adhesive and particularly relates to a single-component shock-resistant low-viscosity structural adhesive and a preparation method thereof, wherein the single-component shock-resistant low-viscosity structural adhesive is suitable for bonding motors and other structures. The preparation method comprises the following steps of (1) mixing liquid epoxy resin (40-80 parts) and a toughening agent (7-15 parts), and stirring at the temperature of 15-30 DEG C for 1h; (2) adding a curing agent (9-13.5 parts) while stirring, and continuing to stir at the temperature of 15-30 DEG C for 1h until uniformly mixing; (3) adding an accelerant (7-8 parts) while stirring, and continuing to stir at the temperature of 15-30 DEG C for 0.5h until uniformly mixing; and (4) adding a coupling agent (0-0.5 part) and pigment (0-1 part), and stirring at the temperature of 15-30 DEG C for 1h until uniformly mixing. Compared with the prior art, the single-component shock-resistant low-viscosity structural adhesive has the advantages that the toughening agent used by the invention is polyether amine, so that the high adhesive strength and temperature resistance of an epoxy system are remained, the viscosity of the system is reduced, and the flexibility and impact resistance of the adhesive are improved. The single-component shock-resistant low-viscosity structural adhesive is low in viscosity, and the adhesive can be coated on elements which are small in bonding gap and not easy to coat through self-permeation, so that the work efficiency can be greatly increased. A synthesis reaction process is simple, easy to operate and low in cost, and a product is wide in application range.
Description
technical field [0001] The invention relates to a structural adhesive, in particular to a one-component impact-resistant low-viscosity structural adhesive and a preparation method thereof, which are suitable for bonding structures such as motors. Background technique [0002] At present, most of the structural adhesives used for motor structural bonding are composed of two components. For example, the Chinese invention patent with the publication number 102977802A and the name of an acrylate structural adhesive that does not corrode copper is used in related fields such as construction. The publication number is CN101709208A, the name is a kind of building structure adhesive with high impact peeling strength, the publication number is CN10724368A, the name is a kind of impact-resistant epoxy structural adhesive, these structural adhesives have good toughness, good Impact resistance, but because the two components need to be mixed evenly in a certain proportion during use, th...
Claims
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