A high-temperature-resistant, anti-aging low-voc polyurethane anti-corrosion coating

An anti-corrosion coating and anti-aging technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, fire-resistant coatings, etc., can solve the problems of poor heat resistance of epoxy resin, excellent anti-aging performance, and decreased adhesion, and achieve low VOC content , Anti-aging performance improvement, the effect of reducing emissions

Active Publication Date: 2021-08-31
洛阳双瑞防腐工程技术有限公司
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AI-Extracted Technical Summary

Problems solved by technology

[0004] Chinese patent CN1580160 discloses "a heat-resistant anti-corrosion coating". The invention uses epoxy resin to enhance the adhesion of silicone, but the heat resistance of epoxy resin is poor, and long-term use will inevitably lead to a decrease ...
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Method used

Anticorrosion coating of the present invention has adopted low toxicity even nontoxic solvent and non-solvent B component, and VOC content has reached environmental protection requirement; Add nano-titanium dioxide and nano-silicon dioxide in the filler, improved ...
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Abstract

A high-temperature-resistant, anti-aging low-VOC polyurethane anti-corrosion coating, which is composed of two components, A and B. Component A consists of 10-20 parts of polyphenylene ring polyester polyol resin, 40-60 parts of pigments and fillers, 20 parts of ~40 parts of solvent and 1~3 parts of additives. The B component is multifunctional polyisocyanate. The A and B components are mixed and stirred according to the weight ratio of 10:0.5~1.5. The solvent of component A is a combination of tert-butyl acetate, dimethyl carbonate and dibasic acid ester, which has the characteristics of low toxicity and low VOC content; component B uses solvent-free isocyanate resin, which further reduces the VOC content of anti-corrosion coatings ; Nano-titanium dioxide and nano-silicon carbide are added to the filler, which improves the heat resistance of the polyurethane coating, making it heat-resistant up to 200 ° C, and enhancing the anti-corrosion performance of the coating.

Application Domain

Technology Topic

Solvent freeNanostructured carbon +16

Image

  • A high-temperature-resistant, anti-aging low-voc polyurethane anti-corrosion coating

Examples

  • Experimental program(3)

Example Embodiment

[0026] Example 1
[0027] High temperature resistant, anti-aging low-VOC Polyurethane anti-corrosion coatings, composed of the following components in parts by weight:
[0028] Group A: 12 parts of a polyester polyol resin; 1.25 parts of titanium dioxide; nano SiC 1.25 parts; 50 parts of talc; Solvent 23 parts; AT-203 1.5 parts; Organic bentonite 1 part; A171 0.5 parts.
[0029] Part B: 9 parts of solvent-free isocyanate resin (Basonat HI 100 ap).
[0030] After the above-mentioned Group A and Part B were mixed and stirred uniformly, extraction template, the template then cured for 7 days and performance testing, the performance data of the anticorrosive coating film surface model shown in Table 1 below.

Example Embodiment

[0031] Example 2
[0032] High temperature resistant, anti-aging low-VOC Polyurethane anti-corrosion coatings, composed of the following components in parts by weight:
[0033] Group A: 18 parts of a polyester polyol resin; titanium dioxide 1 parts; nanometer SiC: 1; 40 parts of micaceous iron oxide; Solvent 20 parts; AT-203 1 parts; Organic bentonite 1 part; KH560 0.45 parts.
[0034] Part B: 8 parts of solvent-free isocyanate resin (Basonat HI 100 ap).
[0035] After the above-mentioned Group A and Part B were mixed and stirred uniformly, extraction template, the template then cured for 7 days and performance testing, the performance data of the anticorrosive coating film surface model shown in Table 1 below.

Example Embodiment

[0036] Example 3
[0037] High temperature resistant, anti-aging low-VOC Polyurethane anti-corrosion coatings, composed of the following components in parts by weight:
[0038] Group A: 18 parts of a polyester polyol resin; 1.4 parts titanium dioxide; nano SiC 1.4 parts; 33 parts of talc; Mica 23 parts; solvent, 30 parts; AT-203 0.5 parts; Organic bentonite 1 part; A171 1 share.
[0039] Part B: 14 parts of solvent-free isocyanate resin (Basonat HI 100 ap).
[0040] After the above-mentioned Group A and Part B were mixed and stirred uniformly, extraction template, the template then cured for 7 days and performance testing, the performance data of the surface model of the anti-corrosion coating film is attached as follows figure 1 Table 1 in FIG.
[0041] By attachment figure 1 The table data can be seen: the anticorrosive coating of the present invention into line 200 persons 2 ℃ heat aging test of 5000 hours. The results show: sample without cracking, blistering and shedding, excellent performance. Compared with the temperature of the coating containing a silicone resin, a silicone resin is much less than the price. Accordingly, the present invention both in performance and cost has advantages.
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Description & Claims & Application Information

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