Epoxy dry hanging adhesive as well as preparation method and application thereof
A dry-hanging glue and epoxy-drying technology, applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of epoxy dry-hanging glue crystallization and other problems, achieve excellent mechanical properties, less dosage, and lower cost Effect
Inactive Publication Date: 2021-03-19
GUANGZHOU JOINTAS CHEM +1
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Problems solved by technology
For this reason, the present invention proposes an epoxy dry-hanging adhesive to solve the problem of crystallization of the epoxy dry-hanging adhesive at a low temperature of 5°C, so that the epoxy dry-hanging adhesive can be applied at low temperature
Method used
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preparation example Construction
[0051] The preparation method of the epoxy dry hanging glue of embodiment 1~3 comprises the steps:
[0052] (1) Preparation of toughening agent
[0053] In a 250ml four-neck flask, add 150g of cornstarch and 150g of polyethylene glycol 400, stir evenly at room temperature, add 19.6g of sulfuric acid solution with a mass fraction of 5%, react at 150°C for 10h, and cool After discharging, the toughening agent is obtained.
[0054] (2) Preparation of modified epoxy resin
[0055] Add E-51 epoxy resin (epoxy resin b) and toughening agent into the reaction kettle, wherein the mass ratio of E-51 epoxy resin to toughening agent is 20:3, heat up to 150°C, and vacuumize and stir for 5h After cooling, the modified epoxy resin is obtained.
[0056] (3) Preparation of component A
[0057] Add a measured amount of E-44 epoxy resin, modified epoxy resin, diluent, heavy calcium powder, and barium sulfate into the reaction kettle, stir evenly, then add a measured amount of white carbon bl...
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Abstract
The invention discloses an epoxy dry hanging adhesive as well as a preparation method and application thereof. The epoxy dry hanging adhesive comprises components A and components B. The components Acomprise the following preparation raw materials: epoxy resin a, modified epoxy resin, a diluent and a filler I; and the components B comprise the following preparation raw materials: a curing agent,a filler II and an auxiliary agent. The modified epoxy resin is a reaction product of epoxy resin b and a flexibilizer, and the flexibilizer is a polymerization reaction product of starch and polyethylene glycol. According to the invention, the specific flexibilizer is added into the epoxy dry hanging adhesive, and the flexibilizer is used for modifying the epoxy resin, so that the low-temperaturecrystallization of the components A in the epoxy dry hanging adhesive can be prevented, and the purpose that the epoxy dry hanging adhesive is applied at a low temperature is achieved. The epoxy dryhanging adhesive disclosed by the invention is extremely low in diluent dosage, can be quickly cured at a low temperature, and shows excellent mechanical properties at the same time. According to theinvention, the raw materials with lower price are adopted, so that the cost of the epoxy dry-hanging adhesive is reduced.
Description
technical field [0001] The invention relates to the technical field of stone dry-hanging glue, in particular to an epoxy dry-hanging glue and its preparation method and application. Background technique [0002] Epoxy stone dry-hanging glue is widely used in engineering structure bonding due to its high permanent bonding strength. Strong, good weather resistance, especially excellent thixotropic performance is unmatched by other products. Dry hanging glue is used for hanging stone and various finishes, as well as reinforcement, earthquake resistance, reinforcement and dynamic load treatment of building structures. It is the most ideal bonding material. [0003] Epoxy resin is the main component of epoxy dry-hanging adhesive. Epoxy resin has the problem of low-temperature crystallization, which makes it difficult to construct epoxy dry-hanging adhesive in a low temperature environment below 5°C. In the prior art, bisphenol F epoxy resin and diluent are usually used together...
Claims
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IPC IPC(8): C09J163/00C09J11/04C09J11/06C09J11/08
CPCC09J163/00C09J11/04C09J11/06C09J11/08C08K2003/265C08K2003/3045C08K2201/014C08L2205/025C08L2205/035
Inventor 程梦平王小伟陈权潘守伟
Owner GUANGZHOU JOINTAS CHEM