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Structural glue containing nano material

A technology of nano-materials and structural adhesives, applied in the direction of adhesives, epoxy resin adhesives, adhesive types, etc., can solve the problem that the mechanical properties and functional properties are not perfect and comprehensive, and are not suitable for use in areas with large temperature differences between the four seasons. Solve the problems of low compressive shear strength of composite materials, achieve excellent mechanical properties and functional properties, improve self-compacting properties, and increase shear strength

Inactive Publication Date: 2005-08-24
湖南省宏尚土木工程技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A component:

[0029] E-44 type or E-51 type epoxy resin 100 parts

[0030] Liquid polysulfide rubber 25 parts

[0031] Cement (filler) 130 parts

[0032] nano-SiO 2 3 copies

[0033] B component:

[0034] Modified curing agent 25 parts

[0035] Accelerator 5 parts

[0036] Plasticizer 5 parts

[0037] Silica powder 70 parts

[0038] Titanium powder 15 parts

[0039] Aluminum powder 10 parts

[0040] 10 parts of KH-550 coupling agent γ-aminopropyltriethoxysilane.

[0041] This example is used under normal conditions.

Embodiment 2

[0043] A component:

[0044] E-44 type or E-51 type epoxy resin 100 parts

[0045] 10 parts liquid polysulfide rubber

[0046] Cement (filler) 150 parts

[0047] nano-SiO 2 3 copies

[0048] B component:

[0049] Modified curing agent 25 parts

[0050] Accelerator 5 parts

[0051] Plasticizer 5 parts

[0052] Silica powder 70 parts

[0053] Titanium powder 15 parts

[0054] Aluminum powder 30 parts

[0055] 10 parts of KH-550 coupling agent γ-aminopropyltriethoxysilane.

[0056] This embodiment has good high temperature resistance, corrosion resistance, oil resistance, and good toughening effect, and is suitable for occasions with poor environmental conditions.

Embodiment 3

[0058] A component:

[0059] E-44 type or E-51 type epoxy resin 100 parts

[0060] Liquid polysulfide rubber 15 parts

[0061] Cement (filler) 130 parts

[0062] nano-SiO 2 5 copies

[0063] B component:

[0064] Modified curing agent 35 parts

[0065] Accelerator 10 parts

[0066] Plasticizer 5 parts

[0067] Silica powder 70 parts

[0068] Titanium powder 15 parts

[0069] Aluminum powder 10 parts

[0070] KH-550 coupling agent γ-aminopropyltriethoxysilane 10 parts

[0071] This embodiment is an underwater curing type, which is suitable for humid environments or occasions with high requirements for impermeability. The performance of the cured sample of the epoxy resin structural adhesive formulated from the first and second components of Examples 1, 2, and 3 is shown in Table 1:

[0072] Pilot projects

[0073] As can be seen from the above test data, compared with the performance index of the existing epoxy resin stru...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00
Inventor 李世秋廖宏彭建波师俭英叶新平黄钐李光中李忠夏涛
Owner 湖南省宏尚土木工程技术有限公司
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