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

A technology of epoxy resin glue and building exterior walls, which is applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problem that the strength and water absorption have not been effectively solved, which affects the quality and service life of rock wool boards, and buildings Surface coating blistering and other problems, to achieve good waterproof and breathable function, high cohesion, less damage to the human body

Active Publication Date: 2014-07-16
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, polyorganohydrogensiloxane, urea, and water, add them to the reaction kettle and mix them evenly. Then, heating is carried out at 70°C, and then the pH value is adjusted to 7.5 with ammonia water. During the pH adjustment process, the temperature is controlled at 75°C. When white colloid appears, the temperature is immediately lowered to below 50°C, and the building exterior wall insulation rock is obtained. Modified epoxy resin glue for cotton board.

[0025] When spraying glue on 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, take epoxy resin, vinyl silane, acetone, polyorganohydrogensiloxane, polyamide, and water, add them to the reaction kettle and mix them evenly. The polyamide is made of polycaprolactam, and then heated at a temperature of 70°C, and the pH value is adjusted to 7.6. During the adjustment of 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 the thermal insulation rock wool board of the building exterior wall is obtained.

[0028] When spraying glue on 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, take epoxy resin, vinyl silane, absolute ethanol, polyorganohydrogensiloxane, polyamide, and water, and add them to the reaction kettle to mix Uniform, the polyamide is made of polyhexamethylene adipate, and then heated at a temperature of 70°C, then the pH value is adjusted to 7.8 with ammonia water, and the temperature is controlled at 80°C during the pH value adjustment process. When a white colloid appears When the temperature is lowered immediately to below 50°C, the modified epoxy resin glue for the thermal insulation rock wool board of the building exterior wall is obtained.

[0031] When spraying glue on 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 glue preparation, and in particular relates to a modified epoxy resin glue used for thermal insulation rock wool boards of building exterior walls and a preparation method thereof. Background technique [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. Contents of the invention [0003] In view o...

Claims

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Application Information

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