Method for preparing waterborne polyurethane/organosilicon montmorillonite nano composite material

A technology of water-based polyurethane and organic montmorillonite, applied in polyurea/polyurethane coatings, dyed organic silicon compound treatment, fibrous fillers, etc., can solve the problems of water-based polyurethane limitations, etc., and achieve good compatibility, convenient operation and stability good sex effect
CN101812167BInactive Publication Date: 2012-07-25浙江益弹新材料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
浙江益弹新材料科技有限公司
Publication Date
2012-07-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing a waterborne polyurethane / organosilicon montmorillonite nano composite material, which comprises the following steps of: adding organic montmorillonite of a pre-intercalation layer into a prepolymer; performing pre-polymerization, neutralization and emulsification in the presence of a catalyst; and performing secondary chain extension in water to obtain the composite material. The organic montmorillonite of the pre-intercalation layer is prepared by stirring and dispersing 1 mass part of the organic montmorillonite and 2 to 100 mass parts of polymer polyhydric alcohol A for 3 to 8 hours at the temperature of between 80 and 130 DEG C, and then shearing the mixture by using a high-speed shearing machine for 0.5 to 2 hours. The organic montmorillonite is prepared by the following steps of: dissolving montmorillonite in distilled water; adding organosilicon quaternary ammonium salt shown as a formula (I) and 50-percent ethanol into the mixture to prepare mixed solution; and stirring the mixture for 1 to 100 hours at the temperature of between 20 and 90 DEG C, and treating the mixture to obtain the organic montmorillonite. The method has the advantages of low cost, simple process, convenient operation and environmental protection. The prepared composite material has high stability and an extensive application prospect.
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Description

(1) Technical field

[0001] The invention relates to a preparation method of a waterborne polyurethane / organosilicon montmorillonite nanocomposite material, in particular to a preparation method of a waterborne polyurethane / organosilicon quaternary ammonium salt modified montmorillonite nanocomposite material. (2) Background technology

[0002] Water-based polyurethane (WPU) refers to polyurethane that uses water as the dispersion medium and does not contain or contain a very small amount of organic solvents. Because of its non-combustible, non-toxic, non-polluting, energy-saving and other advantages, it has developed rapidly in recent years and has been widely used in leather finishing, architectural coatings, automotive coatings, wood coatings and other fields. However, compared with solvent-based polyurethane, water-based polyurethane still has deficiencies in water resistance, bond strength, temperature resistance, and weather resistance, which limits the application of w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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