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A technology of epoxy resin and caulking material, applied in the direction of epoxy resin glue, non-polymer adhesive additive, adhesive type, etc., can solve low-strength extensibility, poor extensibility, high epoxy resin strength, etc. problem, to achieve the effect of reducing tensile strength, reducing modulus, and increasing flexibility
Inactive Publication Date: 2021-05-07
河南新路航交通科技有限公司
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[0004] The purpose of the present invention is to overcome the shortcomings of high strength and poor elongation of epoxy resin, and provide a single-component epoxy resin caulking material with low strength, good elongation, and good adhesion to concrete or asphalt substrates
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Embodiment 1
[0022] According to the weight ratio of the raw materials in Table 1, the epoxy resin, curing agent, inorganic filler, chain extender and diluent are sheared evenly under the stirring of a high-speed shearer, and then the magnetic ionic liquid, coupling agent, Anti-aging agent, leveling agent, stir evenly, and react for 1 hour to obtain 4 kinds of epoxy resin caulking materials with different compositions. Then, according to GB / T 13477-2002, performance tests were performed on the epoxy resin caulking materials of Comparative Examples 1-3 and Example 1, and the results are shown in Table 2.
[0023] Formulation composition of table 1
[0024]
[0025]
[0026] Table 2 Test results
[0027] Test items Comparative example 1 Comparative example 2 Comparative example 3 Example 1 Leveling Lots of holes on the surface smooth surface smooth surface smooth surface Surface dry time / min 25 28 53 65 Shore Hardness / HD 56 63 45 31 ...
Embodiment 2
[0030] According to the weight ratio of the raw materials in Table 3, the epoxy resin, curing agent, inorganic filler, chain extender and diluent are sheared evenly under the stirring of a high-speed shearer, and then the magnetic ionic liquid, coupling agent, The anti-aging agent and the leveling agent were stirred evenly and reacted for 1 hour to obtain the one-component epoxy resin caulking materials of Examples 2-7. Then, according to GB / T 13477-2002, performance tests were performed on the epoxy resin caulking materials of Examples 2-7, and the results are shown in Table 4.
[0031] Formulation composition of table 3
[0032]
[0033]
[0034] Table 4 test results
[0035]
[0036] It can be seen from Table 4 that the one-component epoxy resin caulking materials of the present invention have relatively low strength, good extensibility, and good adhesion to concrete or asphalt substrates.
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Abstract
The invention discloses a single-component epoxy resin caulking material which comprises the following components in parts by mass: 100 parts of flexible epoxy resin, 20-25 parts of a curing agent, 5-10 parts of magnetic ionic liquid, 50-80 parts of inorganic filler, 2-5 parts of a coupling agent, 1-3 parts of an anti-aging agent, 5-10 parts of a diluent, 5-8 parts of a chain extender and 1-3 parts of a flatting agent, wherein the flexible epoxy resin is polyurethane modified epoxy resin, dimer acid modified epoxy resin, nitrile rubber modified epoxy resin or cardanol modified epoxy resin, and the chain extender is 1, 4-butanediol, 1, 6-hexanediol, triethanolamine or diethylaminoethanol. By adopting the flexible epoxy resin, the tensile strength of the epoxy resin is greatly reduced, the elongation at break is improved, and the elastic property is improved; meanwhile, the chain extender is added to further increase the chain length of the polymer and improve the flexibility; the coupling agent is added so that an interface layer for transmitting stress is formed between the base material and the epoxy resin, and the adhesive force and the compatibility between the epoxy resin and the concrete or asphalt base material are enhanced.
Description
technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a single-component epoxy resin caulking material. Background technique [0002] As a high-performance resin, epoxy resin has excellent bonding properties, mechanical properties, electrical insulation properties, chemical stability and other advantages, so it is widely used in adhesives, coatings, functional materials and other industries. As a kind of epoxy adhesive, room temperature curing epoxy adhesive has a series of advantages such as time saving, labor saving, energy saving, and convenient use. It has become one of the important varieties with wide application and large quantity in the field of adhesives. In terms of "room temperature vulcanization and high temperature use" curing agent, no obvious breakthrough has been made at home and abroad. This is reflected in the fact that the room temperature vulcanization system is mainly based on aliphatic amines. Qu...
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