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Polyurethane asphalt composite emulsion and use method thereof

A composite emulsion and polyurethane technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of slow curing speed, long surface drying and hard drying time, and reduced construction efficiency of waterborne polyurethane coatings, so as to shorten surface drying time and The effect of hard work time, good comprehensive physical and mechanical properties, and improvement of construction efficiency

Inactive Publication Date: 2016-04-20
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the curing speed of water-based polyurethane coatings is slow, and its surface drying and hard drying time are long, which reduces the construction efficiency, the construction period is long, and it is easy to be damaged before molding.

Method used

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  • Polyurethane asphalt composite emulsion and use method thereof
  • Polyurethane asphalt composite emulsion and use method thereof
  • Polyurethane asphalt composite emulsion and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First, prepare component B: mix petroleum asphalt, light calcium carbonate and polyvinyl butyral in proportion, add ethyl caproate, carbodiimide and triethylenediamine at the same time, at a speed of 40r / min Stir for 30 minutes to form a uniform and stable mixed emulsion. The mass fraction of each component in component B is: asphalt 60%; ethyl caproate 10%; carbodiimide 5%; light calcium carbonate 10%; polyvinyl butyral 5%; Ethylenediamine 5%; Water 5%.

[0029] Then carry out the preparation of C component: the mass fraction of tetradecyltrimethylammonium chloride is 60%, and the mass fraction of propanol is 30%.

[0030] Preparation of polyurethane / asphalt composite emulsion before construction: mix component A and component B with a solid content of 40% at a mass ratio of 2:1, and stir at a speed of 20r / min for 15min for spraying.

[0031] Spraying construction: double-gun spraying method is adopted, the spraying amount of component C is 10% of the mass of the com...

Embodiment 2

[0033] First, prepare component B: mix petroleum asphalt, light calcium carbonate and polyvinyl butyral in proportion, add ethyl caproate, carbodiimide and triethylenediamine at the same time, at a speed of 40r / min Stir for 30 minutes to form a uniform and stable mixed emulsion. The mass fraction of each component in component B is: asphalt 50%; ethyl caproate 5%; carbodiimide 5%; light calcium carbonate 15%; polyvinyl butyral 15%; Ethylenediamine 5%; Water 5%.

[0034] Then carry out the preparation of C component: the mass fraction of tetradecyltrimethylammonium chloride is 50%, and the mass fraction of propanol is 25%.

[0035] Preparation of polyurethane / asphalt composite emulsion before construction: Mix A component with a solid content of 40% and B component at a mass ratio of 3:1, and stir at a speed of 20r / min for 15min for spraying.

[0036] Spraying construction: double-gun spraying method is adopted, the spraying amount of component C is 10% of the mass of the com...

Embodiment 3

[0038] First, prepare component B: mix petroleum asphalt, light calcium carbonate and polyvinyl butyral in proportion, add ethyl caproate, carbodiimide and triethylenediamine at the same time, at a speed of 40r / min Stir for 30 minutes to form a uniform and stable mixed emulsion. The mass fraction of each component in component B is: asphalt 55%; ethyl caproate 10%; carbodiimide 10%; light calcium carbonate 10%; polyvinyl butyral 5%; Ethylenediamine 5%; Water 5%.

[0039] Then the preparation of component C was carried out: the mass fraction of tetradecyltrimethylammonium chloride was 40%, and the mass fraction of propanol was 20%.

[0040] Preparation of polyurethane / asphalt composite emulsion before construction: mix component A and component B with a solid content of 40% in a mass ratio of 5:2, and stir at a speed of 20r / min for 15min for spraying.

[0041] Spraying construction: double-gun spraying method is adopted, the spraying amount of component C is 10% of the mass of ...

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Abstract

The invention relates to the field of preparation and application of composite materials, in particular to polyurethane asphalt composite emulsion and a use method thereof. The polyurethane asphalt composite emulsion is prepared from components A, B and C; the component A is polyurethane prepolymer emulsion; the component B is mixed emulsion of petroleum asphalt, fatty acid ethyl ester, carbodiimide, triethylene diamine, light calcium carbonate and a plasticizer; the component C is a mixed solution of a quaternary ammonium salt surfactant and low mass molecule alcohol. In the preparation and implementation processes, no organic solvents are used; meanwhile, the petroleum asphalt is low in toxicity and has small influence on the environment and the health of human; furthermore, the composite emulsion disclosed by the invention and a construction method thereof are higher in applicability to a base material, have a low requirement on the drying performance of the base material, and can be used in irregular surfaces. The method can promote rapid breakage of the composite emulsion, quick precipitation of particles and generation of crosslinking solidification, so that a composite coating film with high intensity, high low-temperature toughness and high watertightness can be obtained.

Description

technical field [0001] The invention relates to the field of preparation and application of composite materials, in particular to a polyurethane asphalt composite emulsion and a use method thereof. Background technique [0002] In recent years, water-based coatings have attracted more and more attention in the coating field due to their good environmental friendliness, surface adaptability and construction safety. As a kind of water-based coating, two-component polyurethane coating has low film-forming temperature, strong adhesion, good wear resistance, high hardness, good chemical resistance and weather resistance, and has become an important development direction of water-based coatings. However, the curing speed of water-based polyurethane coatings is relatively slow, and its surface drying and hard drying time are relatively long, which reduces the construction efficiency, has a long construction period, and is vulnerable to damage before molding. Therefore, improving t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L95/00C08L29/14C08L47/00C08K5/101C08K5/29C08K5/17C08K3/26C08K5/19C08K5/05C08J3/03
CPCC08L75/04C08J3/03C08J2375/04C08J2495/00C08L2201/56C08L2205/035
Inventor 李瑞海
Owner SICHUAN UNIV
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