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Modified epoxy resin adhesive for building exterior wall thermal insulation rock wool board and preparation method thereof

A technology of epoxy resin glue and building exterior wall, which is applied in the direction of epoxy resin glue, adhesive, adhesive type, etc. Problems such as blistering of the surface coating, to achieve the effect of good waterproof and breathable function, high cohesion, and less damage to the human body

Active Publication Date: 2016-10-05
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As an external insulation material for external walls, rock wool board has the advantages of low thermal conductivity and good fire resistance, but its low strength and strong water absorption affect the use range and durability of the material
The existing rock wool board is mainly bonded by phenolic resin, but the problems of strength and water absorption have not been effectively solved.
In the application of construction engineering, blistering (bulging), cracking, and peeling of the surface coating of buildings often occur, resulting in damage to the insulation layer, which seriously affects the quality and service life of the rock wool board.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First, according to the mass ratio of 0.02:0.06:0.03:0.29:0.15, take E44 epoxy resin, vinyl silane, methanol, polyorganohydrogen siloxane, urea, and water, add them into the reaction kettle and mix them evenly, Then, the heating temperature is 70°C, and then the pH value is adjusted to 7.5 with ammonia water. During the process of adjusting the pH value, the temperature is controlled at 75°C. When a white colloid appears, the temperature is immediately lowered to below 50°C to obtain the building exterior wall thermal insulation rock. Modified epoxy resin glue for cotton board.

[0025] When spraying rock wool, the temperature must be controlled below 100 °C to prevent early curing. During the curing process, the hot air temperature of 150-180 °C is maintained, so that the rock wool board can be cured effectively and quickly.

Embodiment 2

[0027] First, according to the mass ratio of 0.03:0.07:0.04:0.31:0.17, add epoxy resin, vinyl silane, acetone, polyorganohydrogen siloxane, polyamide, and water into the reaction kettle and mix evenly, The polyamide is made of polycaprolactam, and then heated at a heating temperature of 70°C, and then the pH value is adjusted to 7.6. During the process of adjusting the pH value, the temperature is controlled at 75°C. When a white colloid appears, the temperature is immediately lowered to below 50°C. The modified epoxy resin glue for building exterior wall thermal insulation rock wool board is obtained.

[0028] When spraying rock wool, the temperature must be controlled below 100 °C to prevent early curing. During the curing process, the hot air temperature of 150-180 °C is maintained, so that the rock wool board can be cured effectively and quickly.

Embodiment 3

[0030] First, according to the mass ratio of 0.03:0.07:0.04:0.3:0.15, add epoxy resin, vinylsilane, absolute ethanol, polyorganohydrogensiloxane, polyamide, and water into the reaction kettle and mix Evenly, the polyamide is made of polyhexamethylene adipate, and then heated at a temperature of 70 ° C, and then the pH value is adjusted to 7.8 with ammonia water, and the temperature is controlled at 80 ° C in the process of adjusting the pH value. When the temperature is reached, the temperature is immediately lowered to below 50 °C to obtain the modified epoxy resin adhesive for the thermal insulation rock wool board of the building exterior wall.

[0031] When spraying rock wool, the temperature must be controlled below 100 °C to prevent early curing. During the curing process, the hot air temperature of 150-180 °C is maintained, so that the rock wool board can be cured effectively and quickly.

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Abstract

The invention discloses a modified epoxy resin adhesive for a heat insulation rock wool board for an exterior wall of a building and a preparation method thereof. The modified epoxy resin adhesive comprises the components of epoxy resin, vinyl silane, thinner, polyorganohydrogensiloxane, curing agent and water in the mass ratio of 1: (0.02-0.03): (0.06-0.07): (0.03-0.04): (0.29-0.31): (0.15-0.17). The prepared modified epoxy resin adhesive has good water solubility, and the mixture ratio with the water can achieve 1: 3. The modified epoxy resin adhesive can enable a spray-bonded cotton product to realize uniform binding, the strength is higher than a commonly used rock wool adhesive, the stability is good, the environment-friendly property is excellent, a rock wool heat insulation layer has good waterproof and breathable functions, the strength of the heat insulation layer can be improved, and the service life of the heat insulation layer can be further prolonged.

Description

technical field [0001] The invention belongs to the field of epoxy resin adhesive preparation, in particular to a modified epoxy resin adhesive used for building exterior wall thermal insulation rock wool boards and a preparation method thereof. Background technique [0002] Rock wool board as an external thermal insulation material has the advantages of low thermal conductivity and good fire resistance, but its low strength and strong water absorption affect the use range and durability of the material. The existing rock wool board mainly uses phenolic resin for fiber bonding, but the problems of strength and water absorption have not been effectively solved. In the application of construction engineering, foaming (drum), cracking and peeling of the surface coating of the building often occur, resulting in the destruction of the insulation layer, which seriously affects the quality and service life of the rock wool board. SUMMARY OF THE INVENTION [0003] In view of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C09J183/05C09J11/06C09J11/08
Inventor 杜强殷超越吕晶丁荣陈一秀
Owner CHANGAN UNIV