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Polyurethane elastomer composite for protecting outer layer of storage tank and preparation method thereof

A polyurethane elastomer and outer layer technology, applied in the field of polyurethane elastomer, can solve the problems of poor weather resistance, poor cushioning effect, poor adhesion between the product and the storage tank, etc., achieve scientific and reasonable preparation method, prolong service life, avoid easy rusty effect

Active Publication Date: 2014-03-19
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These factors make the storage tank face anti-corrosion treatment of the outer layer of the storage tank, repair of damage and even replacement of the storage tank after a short period of use. Due to the high cost of anti-corrosion treatment, repair and replacement of the storage tank, storage tank manufacturers There is an urgent need for a method that can extend the life of storage tanks
Although there are some coatings on the market that can be used for spraying the outer layer of storage tanks, on the one hand, for fireproof coatings, the waterproof effect is poor. Although the spraying thickness is high, the hardness is too high, resulting in poor cushioning effect; for other types of coatings, there is a The spraying thickness is small, the price is high, and the tank after spraying is poor in resistance to external impact. A small amount of products adjust the thixotropic properties to meet the conditions for spraying the outer layer of the storage tank, but the adhesion between the product and the storage tank is poor. Even if the material sprayed with an excellent adhesion promoter is used for several months, it will fall off obviously. Therefore, the slurry obviously cannot meet the requirements of the storage tank.
In summary, high price, poor adhesion between spray paint and storage tank, poor cushioning effect, low thixotropy and easy "sagging", low strength, poor acid resistance, poor weather resistance, and short service life make spray products unable to be used in storage tanks. The main factors of tank outer layer protection

Method used

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  • Polyurethane elastomer composite for protecting outer layer of storage tank and preparation method thereof
  • Polyurethane elastomer composite for protecting outer layer of storage tank and preparation method thereof
  • Polyurethane elastomer composite for protecting outer layer of storage tank and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Prepare 1000 grams of component A: Add 400 grams of silane-modified polyether polyol 2-chloroethylamine hydrochloride 870-24-6 octamethylcyclotetrasilyl ether, polyether polyol ( Ethylenediamine as the starter, average functionality 4, molecular weight 2600) 150g, acetyl trioctyl citrate 97g, acetyl tributyl citrate 100g, 4,4'-methylenebis(2,6- 150 grams of diethyl)aniline, 10 grams of bis(3-dimethylaminopropyl)amino-2-propanol, 30 grams of iron oxide red, tris(2,4-di-tert-butylphenyl) phosphite 10 grams, 10 grams of 2-(2-hydroxy-3-dodecyl-5-methyl) benzotriazole, 20 grams of modified hydrogenated castor oil, 20 grams of anilinomethyltriethoxysilane, stirring After grinding for 20 minutes, vacuum dehydrate at a temperature of 90°C and a vacuum degree of 0.09MPa for 3 hours, detect the mass fraction of moisture in the material, the mass fraction of moisture is 0.1%, cool down to 30°C, add 553 grams of BYK-A5, and stir for 10 minutes After that, it can be loaded into...

Embodiment 2

[0039] (1) Prepare 1000 grams of component A: Add 400 grams of silane-modified polyether polyol 2-chloroethylamine hydrochloride 870-24-6 octamethylcyclotetrasilyl ether, polyether polyol ( Ethylenediamine as the initiator, average functionality 4, molecular weight 2400) 250g, acetyl tributyl citrate 200g, 3,5-dimethylthiotoluenediamine 104g, bis(3-dimethylammonia Propyl) amino-2-propanol 5 g, iron oxide red 10 g, tris(2,4-di-tert-butylphenyl) phosphite 5 g, 2-(2-hydroxy-3-dodecyl -5-methyl) benzotriazole 5 grams, modified hydrogenated castor oil 10 grams, anilinomethyltriethoxysilane 10 grams, stirred for 30 minutes, after grinding, at a temperature of 100 ° C and a vacuum of 0.1 MPa Vacuum dehydration for 1 hour, detect the mass fraction of moisture in the material, the mass fraction of moisture is 0.08%, cool down to 50°C, add BYK-A5551 g, stir for 20 minutes and then fill the barrel;

[0040] (2) Prepare 1000 grams of component B: add 400 grams of 2-chloroethylamine hydroch...

Embodiment 3

[0043] (1) Prepare 1000 grams of component A: Add 447 grams of silane-modified polyether polyol 2-chloroethylamine hydrochloride 870-24-6 octamethylcyclotetrasilyl ether, polyether polyol ( Ethylenediamine as the starter, average functionality 4, molecular weight 2500) 200g, acetyl trioctyl citrate 100g, 4,4'-methylenebis(2,6-diethyl)aniline 100g, 50g of 3,5-dimethylthiotoluenediamine, 5 grams of bis(3-dimethylaminopropyl)amino-2-propanol, 5 grams of Bicat8MA①, 30 grams of iron oxide red, tris(2,4-phosphite Di-tert-butylphenyl) ester 10 grams, 2-(2-hydroxy-3-dodecyl-5-methyl) benzotriazole 10 grams, modified hydrogenated castor oil 20 grams, anilinomethyl tri 20 grams of ethoxysilane, stirred for 25 minutes, after grinding, vacuum dehydrated at a temperature of 95°C and a vacuum degree of 0.095MPa for 2 hours, detected the moisture content in the material, and the moisture content was 0.07%, cooled to 45°C, and added BYK -A5553g, can be filled into barrels after stirring for ...

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Abstract

The invention belongs to the technical field of polyurethane elastomers, and particularly relates to a polyurethane elastomer composite for protecting the outer layer of a storage tank and a preparation method thereof. The polyurethane elastomer composite comprises an A component and a B component, wherein the A component includes polyether polyol, a plasticizing agent, a cross-linking agent, a catalyst, a pigment, an antioxidant, an ultraviolet absorbent, a thickening agent, a defoaming agent and an adhesive force accelerating agent; the B component includes polyether polyol, isocyanate and a plasticizing agent. The polyurethane elastomer composite disclosed by the invention can be used for isolating the contact of the storage tank and outside moisture, an acidic material, and the like by being sprayed on the outer wall of the storage tank, prevents the problem of easiness for rusting and corrosion through certain buffer capacity and has better buffer effect on the impact objects, such as hailstones and the like, on the storage tank, thereby prolonging the service life of the storage tank. The preparation method disclosed by the invention is scientific, reasonable, simple and feasible.

Description

technical field [0001] The invention belongs to the technical field of polyurethane elastomers, and in particular relates to a polyurethane elastomer composite material used for outer layer protection of storage tanks and a preparation method thereof. Background technique [0002] Storage tanks are special equipment for storing various liquid (or gas) raw materials and finished products. For many enterprises, normal production cannot be achieved without storage tanks. Especially, national strategic material reserves are inseparable from storage tanks of various capacities and types. At present, for storage tanks with moderate prices, due to the general material, on the one hand, the outer wall is easy to rust after a period of use; on the other hand, for some chemical companies, due to the poor environment and high acidity of rainwater, the outer wall of the storage tank is easy to be corroded; At the same time, in the face of severe weather such as hail, since there is no b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/12C08G18/76C08G18/48
Inventor 鞠伟坦孙清峰李立强贾雪芹王振强
Owner SHANDONG INOV POLYURETHANE
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