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A kind of anti-sag solvent-free one-component polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof and solvent-free technology, used in the field of architectural waterproof coatings, can solve the problems of drying film formation speed, poor mechanical properties of sag resistance, etc., and achieve excellent sag resistance, increased affinity, and variable drying time. Effect

Active Publication Date: 2022-05-20
远大洪雨(唐山)防水材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention proposes an anti-sag solvent-free one-component polyurethane waterproof coating and a preparation method thereof, which solves the problems of poor drying film-forming speed, anti-sag property and poor mechanical properties in the related art

Method used

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  • A kind of anti-sag solvent-free one-component polyurethane waterproof coating and preparation method thereof
  • A kind of anti-sag solvent-free one-component polyurethane waterproof coating and preparation method thereof
  • A kind of anti-sag solvent-free one-component polyurethane waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of anti-sag solvent-free one-component polyurethane waterproof coating formula is as follows:

[0032] components parts by weight Polyether DL-2000 10 Polyether 330N 6 Diisononyl phthalate 9 Plasticizer Novares LA300 5 Dimethylenecyclohexane bishydroxystearamide 0.2 Nano calcium carbonate M400 1 carbon black 2 Ground calcium carbonate 36 Modified Kaolin 1 MDI-100 6.5 MDI-50 1.2 Dibutyltin dilaurate 0.01 Oxazolidine latent curing agent HY-901 0.5 Defoamer A-2270 0.1 Polyamide wax powder SLX 1

[0033] Prepare as follows:

[0034] S1, stir 1400 mesh kaolin in a ball mill, then add heptyl undecyl hydroxystearate, the weight ratio of heptyl undecyl hydroxystearate to kaolin is 2:98, heat up to 90°C, and keep warm for half an hour , and then cooled down to 40° C., and discharged to obtain heptyl undecanyl hydroxystearate modified kaolin.

[0035] S2, add polyether...

Embodiment 2

[0042] A kind of anti-sag solvent-free one-component polyurethane waterproof coating formula is as follows:

[0043] components parts by weight Polyether DL-2000 14 Polyether 330N 6 Diisononyl phthalate 10 Isopropyl naphthalene 6 Dimethylenecyclohexane bishydroxystearamide 0.2 Bentonite 1 carbon black 2 Ground calcium carbonate 38 Modified Kaolin 1 MDI-100 7 MDI-50 1.2 Zinc 2-ethylhexanoate 0.01 Dibutyltin dilaurate 0.01 Oxazolidine latent curing agent HY-901 0.6 Defoamer A-2270 0.3 Liquid modified urea LA-150 0.5 Polyamide wax powder SLX 1

[0044] Prepare as follows:

[0045] S1, Stir 1500 mesh kaolin in a ball mill, then add heptyl undecyl hydroxystearate, the weight ratio of heptyl undecyl hydroxystearate to kaolin is 1.5:98.5, heat up at 80°C, and keep warm for half an hour , and then cooled down to 40° C., and discharged to obtain heptyl undecanyl hydroxys...

Embodiment 3

[0053] A kind of anti-sag solvent-free one-component polyurethane waterproof coating formula is as follows:

[0054] components parts by weight Polyether DL-2000 16 Polyether 330N 6 Diisononyl phthalate 12 Isopropyl naphthalene 7 Dimethylenecyclohexane bishydroxystearamide 0.4 Bentonite 1.5 carbon black 2 Ground calcium carbonate 40 Modified Kaolin 1.5 MDI-100 7 MDI-50 1 Zinc 2-ethylhexanoate 0.02 Oxazolidine latent curing agent HY-901 1 Defoamer A-2270 0.4 Polyamide wax powder SLX 1.2

[0055]The preparation method is the same as in Example 2.

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Abstract

The invention relates to the technical field of architectural waterproof coatings, and proposes an anti-sag solvent-free one-component polyurethane waterproof coating, which consists of the following raw materials in parts by weight: 16-23 parts of polyether polyol, 6-10 parts of diphenyl Methyl methane diisocyanate, 14-19 parts of plasticizer, 40-45 parts of pigment and filler, 0.1-0.4 part of defoamer, 0.51-1.02 parts of compound catalyst, 1.2-1.6 parts of rheology additive. Through the above technical solution, the problems of poor drying film forming speed, sagging resistance and poor mechanical properties in the prior art are solved.

Description

technical field [0001] The present invention relates to the technical field of architectural waterproof coatings, in particular to an anti-sag solvent-free single-component polyurethane waterproof coating, especially suitable for confined spaces such as basements and fire pools and special environments such as rainy seasons and basement side wall elevations and construction on slopes and other working conditions. Background technique [0002] Polyurethane waterproof coatings are formed by addition polymerization of isocyanate, polyether, catalysts, additives, pigments, etc. At present, the conventional polyurethane coating itself has a high viscosity. In order to reduce the cost, the manufacturer must increase the amount of fillers to cause the coating itself to have a higher viscosity. Great and air pollution; at the same time, the current polyurethane waterproof coating also has the disadvantage of slow drying and film formation, which is not conducive to the slow drying ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D7/61C09D7/62C09D7/65C09D7/63
CPCC09D175/08C09D7/61C09D7/62C09D7/65C09D7/63C08K2003/265C08K13/06C08K9/04C08K3/346C08K5/12C08K3/26C08K5/20
Inventor 孙智宁程波孙平刚郑志杰宋正红李富伟刘金宝
Owner 远大洪雨(唐山)防水材料有限公司
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