Making method of epoxy resin adhesive for building

A technology of epoxy resin and building structure, which is applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of reducing shrinkage stress, increasing mechanical strength, and long glue mixing cycle, so as to achieve improved bonding strength, Effect of reducing shrinkage stress and reducing equipment investment

Inactive Publication Date: 2006-02-01
阚小勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The building structural adhesives represented by JGN developed by Dalian Institute of Physics and Chemistry and Liaoning Academy of Construction Sciences are toughened by polysulfide rubber or nitrile rubber. The principle is to add some curly rubber with long molecular bonds to the epoxy curing system. Particles, these particles can produce elasticity, reduce the shrinkage stress during curing, so as to increase the mechanical strength, but the strength of the building structure adhesive is not high. After three days of curing at room temperature, the steel-steel bonding is only 12-14Mpa shear strength , another general-purpose building structural adhesive, which is different from the JGN formula in that 15-55 parts by weight of polysulfide rubber toughening agent is added to the original formula, and the steel-steel bonding strength can reach 22Mpa after three days of curing at room temperature. Strength, the disadvantage is that low-temperature curing is greatly limited, and the curing is not complete below 10°C, and its shear strength drops sharply to about 10-12Mpa. At the same time, the high-temperature resistance is not good. The shear strength is only 14-16Mpa, which is far from meeting the specification requirements
The characteristic of this preparation method is that one-time feeding, stirring and vacuum degassing are carried out in one device, the quality is stable and reliable, the efficiency is high, and the stirring consumption is small, but the investment cost is large. The device with a daily production of one ton of glue requires about 300,000 yuan, in addition, the compounding cycle is long, the defoaming effect is not ideal, and the defoaming rate is about 85%, which affects the yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: a kind of preparation method of epoxy resin type building structure adhesive, it is made up of two components, comprises the following steps:

[0012] (1) Preparation of component A: 100 parts of bisphenol A epoxy resin CE-51, 5 parts of reactive diluent propylene oxide butyl ether, the above components are all in parts by weight, and poured into the speed-adjusting disperser , first stir at a speed of 60 rpm for 5 minutes, then gradually increase the speed to 300 rpm, stir for 25 minutes, then discharge the material and pour it into a container. The viscosity of the stirred material is 2500 poise, and the stirred Pour the material into a three-roll machine for defoaming, adjust the gap between the three rolls of the three-roll grinder, the grinding gap is 0.05-0.1 mm, start the three-roll grinder, grind for 25 minutes, discharge and pack to obtain the component A product.

[0013] (2) Preparation of component B: 30 parts of compound obtained by compoundin...

Embodiment 2

[0016] (1) Preparation of component A: 100 parts of bisphenol A epoxy resin CE-51, 15 parts of reactive diluent propylene oxide butyl ether, and 5 parts of nano fumed silica, the above components are all in parts by weight , pour it into a speed-regulating disperser, first stir at a speed of 60 rpm for 5 minutes, then gradually increase the speed to 500 rpm, stir for 15 minutes, then discharge the material and pour it into a container. The viscosity of the stirred material is 4500 湹poor, the material needs to be pre-grinded. At this time, the pre-grinding gap of the three-roller mill is 0.15mm. Grind for 25 minutes. Pour the pre-grinded material into the three-roller for degassing, and adjust the three-roller mill. The gap between the three rolls is 0.05-0.1 mm, and the three-roll grinder is started, and the grinder is ground for 25 minutes, discharged and packaged to obtain the product of component A.

[0017] (2) Preparation of component B: 45 parts of compound obtained by c...

Embodiment 3

[0020] (1) Preparation of component A: 100 parts of bisphenol A epoxy resin CE-51, 10 parts of reactive diluent propylene oxide butyl ether, and 3 parts of nano fumed silica, the above components are all in parts by weight , pour it into a speed-regulating disperser, first stir at a speed of 60 rpm for 5 minutes, then gradually increase the speed to 400 rpm, stir for 20 minutes, then discharge the material and pour it into a container. The viscosity of the stirred material is 2000 hours, pour the mixed material into the three-roller machine for defoaming, adjust the three-roller gap of the three-roller grinder, the grinding gap is 0.05-0.1 mm, start the three-roller grinder, grind for 26 minutes, discharge and pack , to obtain component A product.

[0021] (2) Preparation of component B: 35 parts of compound obtained by compounding modified cycloaliphatic amine and polyamide 651 at a ratio of 1:3, 25 parts of Qishi QS-BE tough epoxy resin, curing accelerator salicylic acid 2 ...

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PUM

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Abstract

The invention relates to the making method of epoxy resin adhesive for building which comprises composition A and B by the proportion of 1 : 0.5-2, the preparation of component A consists of mixing bisphenol A epoxide resin CE-51 or bisphenol A epoxide resin CYD 128 100 parts, active diluent epoxypropane butyl ether 5-15 parts, dispersing and carrying out grinding de-aerating treatment.

Description

technical field [0001] The invention relates to a preparation method of an epoxy resin type building structure adhesive. Background technique [0002] The building structural adhesives represented by JGN developed by Dalian Institute of Physics and Chemistry and Liaoning Academy of Construction Sciences are toughened by polysulfide rubber or nitrile rubber. The principle is to add some curly rubber with long molecular bonds to the epoxy curing system. Particles, these particles can produce elasticity, reduce the shrinkage stress during curing, so as to increase the mechanical strength, but the strength of the building structure adhesive is not high. After three days of curing at room temperature, the steel-steel bonding is only 12-14Mpa shear strength , another general-purpose building structural adhesive, which is different from the JGN formula in that 15-55 parts by weight of polysulfide rubber toughening agent is added to the original formula, and the steel-steel bonding ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/02
Inventor 阚小勇
Owner 阚小勇
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