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Preparation method of flexible quick-curing structural adhesive for buildings

A structural adhesive and fast-curing technology, applied in adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve problems such as difficult process control, reduced material strength, and reduced service life, and achieve faster bonding strength, The effect of reducing viscosity and prolonging service life

Inactive Publication Date: 2021-07-23
中道基业养护科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a method for preparing a flexible and fast-curing structural adhesive for construction, which solves the problem that the existing structural adhesive tends to show a hard and brittle state after being cured in the above-mentioned background technology, and the colloid itself The toughness is poor, and the internal stress generated by curing is easy to cause cracks in the adhesive layer, which indirectly leads to the reduction of the strength of the material during the bonding process and the reduction of the service life, and the formula is complicated, the process is not easy to control, and it cannot well meet people's needs. Use requirements and other issues

Method used

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  • Preparation method of flexible quick-curing structural adhesive for buildings

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preparation example Construction

[0020] see figure 1 , the present invention provides a technical solution: a preparation method of flexible fast-curing structural adhesive for construction, the structural adhesive is 100% by weight, the acrylate monomer is 100-120 parts; the adhesive is 25-40 parts 20-40 parts of plasticizer; 30-35 parts of toughening agent; 5-10 parts of curing agent; 5-10 parts of accelerator; 10-15 parts of thinner; 5-15 parts of modified materials and other fillers;

[0021] Acrylic monomer 50-60%; Adhesive 12-20%; Plasticizer 10-20%; Toughener 15-18%; Curing agent 2-5%; Accelerator 2-5%; Thinner 5-8%; modified materials and other fillers 3-8%;

[0022] The plasticizer is one of polybutadiene, dioctyl phthalate and didecyl phthalate, or the two substances are mixed in any proportion;

[0023] Modified materials are selectively added materials;

[0024] The preparation method of flexible fast-curing structural adhesive for construction comprises the following process steps:

[0025] (...

Embodiment 1

[0035] (1), the acrylate monomer of 50% by weight and the filler of 5% are fully mixed by a mixer, and the speed of the mixer is controlled at 20-30r / min;

[0036] The filler in step (1) wherein contains 2% pigment;

[0037] (2) Place the material mixed in step (1) in an oven for heating treatment, the temperature range of the oven is 60-90°C, and the heating time is 30 minutes; during the heating period, stir three times, once every 10 minutes, so that the materials are fully mixed;

[0038] (3), add adhesive material 12-20% respectively in the material after step (2); Plasticizer 10-20%; Toughening agent 15-18%; Curing agent 5%; Accelerator 5%; 5% diluent for initial mixing;

[0039] (4) Use the three-roll mill to mix the mixed material 4-6 times, each time the mixing time is not less than 20min, so that the material is fully mixed, and the temperature of the three-roll machine is controlled at 40-60°C during the period. The material is uniform and free of particles;

[0...

Embodiment 2

[0043] (1) Place 50% by weight of acrylate monomer, 5% of filler and 5% of modified material in an oven for heat treatment, the temperature range of the oven is 60-70°C, and the heating time is 30min; Stir six times during this period, once every 5 minutes, so that the materials are fully mixed;

[0044] (2), add adhesive material 12-20% respectively in the material after step (1); Plasticizer 10-20%; Toughening agent 15-18%; Curing agent 5%; Accelerator 5%; 5% diluent for initial mixing;

[0045](3) Use the three-roll mill to mix the mixed material 5-6 times, each time the mixing time is not less than 30min, so that the material is fully mixed, and the temperature of the three-roll machine is controlled at 40-60°C during the period. The material is uniform and free of particles;

[0046] (4) Place the above mixed material in a vacuum degassing machine for 4-7 minutes at a speed of 2500--3000r / min;

[0047] (5) Forming and discharging.

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Abstract

The invention discloses a preparation method of a flexible quick-curing structural adhesive for buildings, and relates to the technical field of monitoring modules, in particular to the preparation method of the flexible quick-curing structural adhesive for the buildings. 100wt% of the structural adhesive comprises 100-120 parts of acrylate monomers; 25 to 40 parts of a bonding material; 20-40 parts of a plasticizer; 30 to 35 parts of a toughening agent; 5-10 parts of a curing agent; 5-10 parts of an accelerant; 10 to 15 parts of a diluent; and 5-15 parts of a modified material and other fillers. According to the preparation method of the flexible quick-curing structural adhesive for the building, the manufacturing process of the structural adhesive is simple and easy to operate, and production and construction are easy; and after being cured, the adhesive has relatively high hardness and good toughness at the same time, and not only has good shearing and stripping properties, but also has relatively high elongation at break and tensile property.

Description

technical field [0001] The invention relates to the technical field of building structural adhesive configuration, in particular to a preparation method of flexible and fast-curing structural adhesive for building. Background technique [0002] Structural adhesive refers to high strength (compressive strength > 65MPa, steel-steel positive tensile bonding strength > 30MPa, shear strength > 18MPa), can withstand large loads, and is resistant to aging, fatigue, and corrosion. It has stable performance and is suitable for adhesives that withstand strong structural parts. Non-structural adhesives have low strength and poor durability. They can only be used for ordinary and temporary bonding, sealing, and fixing, and cannot be used for bonding structural parts. High glue strength, anti-peeling, impact resistance, simple construction process, used for the bonding of metal, ceramics, plastics, rubber, wood and other materials of the same kind or between different materials,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J4/06C09J11/06C09J11/08
CPCC09J4/00C09J4/06C09J11/06C09J11/08
Inventor 陈宇啸郑象益
Owner 中道基业养护科技有限公司
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