Bi-component waterborne polyurethane floor coating and preparing method thereof

A water-based polyurethane and floor coating technology, applied in the field of coatings, can solve the problems of acrylic esters being easily hot, sticky and cold and brittle, the coating film is not chemically cross-linked, and cannot provide weather resistance, etc., and achieves stable ring content in storage and market use. Wide range of effects with good hardness

Inactive Publication Date: 2016-01-20
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the currently published WPU floor coating patents use acrylic resin dispersions or acrylic hydroxyl emulsions as water-based polyol components, such as Chinese patents CN102533077A, CN102516858A, CN102634273A, etc. Although the VOC content in these floor coating systems is lower than existing solvent-based floor coatings, but acrylate is easy to be hot and sticky, cold and brittle, and its weather resistance is poor
CN102260446A discloses a water-based single-component polyurethane floor coating and a preparation method thereof. The floor coating is safe and environmentally friendly, and is easy to implement. However, since the film-forming substance used is polyurethane-polyacrylate composite emulsion, its coating film has not been chemically Cross-linked, does not provide good weather resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] The two-component waterborne polyurethane floor coating consists of A and B components.

[0079] The components A and B are composed in parts by weight as follows:

[0080] A component

[0081] Silicone modified polyurethane polyol aqueous dispersion 45

[0082] Phthalocyanine blue 11

[0083] Titanium dioxide 9

[0084] PE-1000.2

[0085] BYK-0450.3

[0086] CF-100.5

[0087] RM-8W0.7

[0088] BYK-3810.15

[0089] Deionized water 28.15

[0090] B component

[0091] Bayhydur XP265525

[0092] The formula composition (weight %) of organosilicon-modified polyurethane polyol water dispersion is as follows:

[0093] Toluene diisocyanate (TDI) 11.5

[0094] Polyether N22019.8

[0095] Small molecule hydroxy silicone oil 2.0

[0096] Dimethylolpropionic acid (DMPA) 1.6

[0097] 1,4-Butanediol (BDO) 2.4

[0098] Trimethylolpropane (TMP) 0.15

[0099] Triethylamine (TEA) 1.2

[0100] Diethanolamine (DEA) 0.63

[0101] Ethylenediamine (EDA) 0.72

[0102] Deio...

Embodiment 2

[0106] The two-component waterborne polyurethane floor coating consists of A and B components.

[0107] A, B component formula mass parts composition is as follows:

[0108] A component

[0109] Silicone modified polyurethane polyol aqueous dispersion 50

[0110] Carbon Black 12

[0111] calcium carbonate 8

[0112] BYK-1810.2

[0113] BYK-0280.3

[0114] SN-50270.5

[0115] RM-8W0.7

[0116] BYK-3810.15

[0117] Deionized water 23.15

[0118] B component

[0119] Bayhydur XP265520

[0120] The formulation and specific preparation method of the silicone-modified polyurethane polyol aqueous dispersion are the same as in Example 1.

[0121] The concrete preparation method of two-component waterborne polyurethane floor coating is: the preparation method of A component is the same as embodiment 1. B component is Bayer's water-based polyurethane curing agent BayhydurXP2655. The components A and B are uniformly mixed in a weight ratio of 5:1 to obtain a two-component wa...

Embodiment 3

[0123] The two-component waterborne polyurethane floor coating consists of A and B components.

[0124] A, B component formula mass parts composition is as follows:

[0125] A component

[0126] Silicone modified polyurethane polyol aqueous dispersion 55

[0127] Iron Oxide Red 10

[0128] Talc 6

[0129] BYK-1810.2

[0130] BYK-0280.3

[0131] SN-50270.5

[0132] RM-8W0.7

[0133] HY-30180.15

[0134] Deionized water 27.15

[0135] B component

[0136] Bayhydur XP265516.67

[0137] The formulation and specific preparation method of the silicone-modified polyurethane polyol aqueous dispersion are the same as in Example 1.

[0138] The concrete preparation method of two-component waterborne polyurethane floor coating is: the preparation method of A component is the same as embodiment 1. B component is Bayer's water-based polyurethane curing agent BayhydurXP2655. The component A and component B are uniformly mixed in a weight ratio of 6:1 to obtain a two-component w...

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PUM

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Abstract

The invention discloses a bi-component waterborne polyurethane floor coating and a preparing method thereof. The coating is prepared from a component A and a component B, the component A uses organic-silicone-modified polyurethane polyalcohol aqueous dispersion as a basic component and is prepared by adding and dispersing pigment, filler, a wetting agent, a defoaming agent, a dispersing agent, a thickening agent, a flatting agent and deionized water, and the component B is hydrophilic modified aliphatic polyisocyanate. The bi-component waterborne polyurethane floor coating is safe and environmentally friendly, the film elasticity can be controlled by adjusting the component ratio, and the coating is environmentally friendly, economical, good in quality and capable of being widely used for internal and external wall floor protection and decoration on different occasions.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a two-component waterborne polyurethane floor coating and a preparation method thereof. Background technique [0002] Traditional solvent-based PU floor coatings contain a large amount of volatile organic compounds (VOC) and a small amount of free isocyanate, which are easy to cause harm to the environment and human body. With the development of environmental protection requirements and water-based coating technology, water-based polyurethane (WPU) floor coatings with low VOC content are gradually replacing solvent-based products. [0003] One-component WPU is the earliest water-based product of PU. Its relative molecular weight is low and the degree of cross-linking is not high, resulting in poor solvent resistance and chemical resistance, low coating film hardness and surface gloss. Through cross-linking , Composite modified single-component WPU has been improved to a certain extent to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D175/08C09D7/12C08G18/66C08G18/61C08G18/48C08G18/32C08G18/34C08G18/12
Inventor 杨建军吴庆云张建安吴明元程飞
Owner ANHUI UNIVERSITY
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