Structural glue containing nano material

Abstract

The structural adhesive containing nano material includes two components, the component A consists of epoxy resin, liquid polysulfide rubber, stuffing and nano SiO2, and the component B consists of modified curing agent, promoter, plasticizier, fine silica powder, fine titania powder, aluminum powder and coupling agent, with the ratio between component A and component B being 0.5-1.5 to 0.5-1.5. The liquid polysulfide rubber can increase the flexibility of the adhesive and the nano material can increase the contact area between the adhesive and adhered body and binding force, improve mechanical performance. The structural adhesive is dense, waterproof, flexible, antiaging, and has high adhering strength, shearing strength, high stability, etc.

Description

Technical field: [0001] The invention belongs to an adhesive, in particular to a structural adhesive for construction. Background technique: [0002] Adhesives for building structures are one of the important chemical building materials, and there are many kinds of them. From the point of view of function, they have been developed from a single beam and column reinforcement to anchoring glue, construction glue and component joints other than beams and columns. Long glue, etc.; From the perspective of the polymer components used, it has been developed from the original single epoxy resin glue (including modified glue) to acrylic, polyurethane, unsaturated polyester and inorganic; from the performance From the point of view, it has developed from the general-purpose type that can only be used for normal temperature and dry construction to the temperature-resistant type, wet construction type, pouring type, single-package type that does not need to be mixed on site, and low-tem...

AI Technical Summary

Problems solved by technology

Although the above two technical solutions can improve the toughness of the structural adhesive, improve the heat resistance of the structural adhesive, etc., they still have the disadvantage of low compressive shear strength of the adhesive material, especially when used for the bonding of marble and granite. It is difficult to meet the requirements of safety and reliability, and it is not suitable for use in areas with large temperature differences in four seasons

CN1222552A provides a kind of epoxy resin adhesive containing rigid mesogenic group and flexible chain modifier and its preparation method, it is liquid epoxy resin, dicyandiamide, filler and other materials formulated into a new type of ring Oxygen resin adhesive, the adhesive can be cured at medium and low temperature. The preparation of the modifier is complicated, and there is a characteristic that the compressive shear strength value of the adhesive material is low

And CN1282771A discloses a kind of two-component epoxy resin structural adhesive for building, and it comprises A component and B component, contains bisphenol A type epoxy resin in A component, contains polyamide type curing agent in B component , A component also contains polysiloxane, its addition amount is 5-10% of the bisphenol A type epoxy resin, although its compressive shear strength is high, especially the freeze-thaw compressive shear strength is high, but other mechanical properties and Functional performance is not perfect and comprehensive