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Polycarbonate polyol type spraying polyurea elastomer coating and preparation method
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A polyurea elastomer, polycarbonate technology, applied in the direction of coating, can solve the problem of undiscovered, and achieve the effect of reducing edge warping and falling off
Inactive Publication Date: 2015-02-04
SHANGHAI ORIENTAL YUHONG WATERPROOF TECH
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Problems solved by technology
[0005] No patents related to the use of polycarbonate diols to prepare spray-coated polyurea elastomer materials have been found
Method used
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Embodiment 1
[0024] A component:
[0025]
[0026]
[0027] Synthesis:
[0028] 1. Add polycarbonate polyol, polyether polyol, dibutyl phthalate, and catalyst into the reaction kettle, start stirring, heat up to 110°C, vacuumize for 3 hours to remove water, and start to cool down to 60°C;
[0029] 2. Add isocyanate, heat up to 80°C after the temperature stabilizes, and react for 3 hours;
[0030] 3. Check the NCO% content every half hour, and the material can be discharged when it reaches 13.2%;
[0031] B component:
[0032]
[0033] Synthesis:
[0034] 1. Put the above-mentioned raw materials into the reaction kettle one by one, vacuumize and stir at 110-120°C for 3 hours, and then discharge.
[0035] Instructions:
[0036] Use special spraying equipment for spraying polyurea for construction, requiring the material to be heated above 50°C.
[0037] Immediately after spraying, put it into the standard curing room for curing, and test the indicators after seven days;
[00...
Embodiment 2
[0042] A component
[0043]
[0044] Synthesis:
[0045] 1. Add polycarbonate alcohol, polyether, dibutyl phthalate, and catalyst into the reaction kettle, start stirring, heat up to 110°C, remove water under vacuum for 3 hours, and start to cool down to 60°C;
[0046] 2. Add isocyanate, heat up to 80°C after the temperature stabilizes, and react for 3 hours;
[0047] 3. Check the NCO% content every half hour, and the material can be discharged when it reaches 16.5%;
[0048] B component
[0049]
[0050]
[0051] Synthesis:
[0052]1. Put the above-mentioned raw materials into the reaction kettle one by one, vacuumize and stir at 110-120°C for 3 hours, and then discharge.
[0053] Instructions:
[0054] Use special spraying equipment for spraying polyurea for construction, requiring the material to be heated above 50°C.
[0055] Immediately after spraying, put it into the standard curing room for curing, and test the indicators after seven days;
[0056] Its m...
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Abstract
The invention discloses a polycarbonatepolyol type spraying polyureaelastomercoating and a preparation method, belonging to the technical field of coatings. The polycarbonatepolyol type spraying polyureaelastomercoating comprises a component A and a component B, wherein the component A comprises the following components in percentage by mass: 1.0-50% of polycarbonatepolyol, 0-50% of polyether polyol, 1.0-60% of diisocyanate, 0.01-0.1% of a catalyst and 0-50% of a plasticizer; and the component B comprises the following components in percentage by mass: 0-80% of polyether polyol, 1.0-80% of end amino polyether, 0.1-30.0% of a chain extender, 0-40% of a plasticizer, 0.1-0.5% of a defoaming agent, 0.1-1.0% of a catalyst, 0.1-0.5% of an ultraviolet absorbing agent, 0.3-2.0% of a coupling agent and 0-3% of other additives. By adopting the polycarbonate polyol type spraying polyureaelastomercoating, problems of edge warping, falling and the like of a sprayed polyurea material in the practical use process are reduced.
Description
technical field [0001] The invention relates to a novel spray polyurea elastomer coating and a preparation method thereof, belonging to the technical field of coatings. Background technique [0002] At present, Spray PolyureaElastomer (SPUA for short) technology is a new type of solvent-free and pollution-free green environmental protection construction technology developed and developed in foreign countries in the past ten years to meet the needs of environmental protection. The material has outstanding properties such as high mechanical strength, wear resistance, corrosion resistance, oil resistance, water resistance, aging resistance, and alternating temperature (pressure) resistance; in terms of construction, it has the characteristics of fast construction speed, excellent overall performance, and good environmental protection. According to different substrates and application requirements, we have developed a series of products ranging from a few seconds to tens of min...
Claims
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Application Information
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