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Polyurethane spray-coating composite material for storage tank thermal insulation and preparation method thereof

A technology of polyurethane and storage tanks, which is applied in the field of polyurethane spraying materials for thermal insulation of storage tanks and its preparation. It can solve the problems of poor stability of polyurethane foam, affecting the physical properties of foam, and low flame retardant effect, and achieves low cost and high product quality. The effect of stability and short production cycle

Active Publication Date: 2015-03-18
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the combined polyethers used in the preparation of polyurethane rigid foam materials currently use 141b (monofluorodichloroethane) as a physical foaming agent. First, it is not environmentally friendly. The polyurethane foam produced by the two has poor stability and high thermal conductivity. , not conducive to energy saving and consumption reduction
In addition, the high flame-retardant polyurethane foam used in the past for storage tank insulation materials often uses additive flame retardants or flame-retardant polyesters, which often affect the physical properties of the foam, and the flame-retardant effect is not high

Method used

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  • Polyurethane spray-coating composite material for storage tank thermal insulation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Prepare component A, 200kg: Weigh polyether polyol A: B251 (Solvay), 76kg, polyether polyol B, 20kg, polyester polyol: 6320LA (Nanjing Kangsude), 17kg, Foam stabilizer B-8538 (Evonik), 3kg, deionized water, 1.1kg, catalyst selection N,N,N',N",N"-pentamethyldiethylenetriamine, triethylenediamine , 1,3,5-tris(dimethylaminopropyl)-hexahydrotriazine and dibutyltin dilaurate, the weights are 1.5kg, 1.2kg and 0.2kg respectively, physical blowing agent HFC-365mfc / normal Pentane (a mixture of HFC-365mfc and n-pentane, the weight ratio of the two is 29:21), 40kg, flame retardant TCPP, 36kg, other additives, 4kg.

[0029] Add the weighed polyether polyol A, polyether polyol B, polyester polyol, foam stabilizer, chemical foaming agent, catalyst, flame retardant, physical foaming agent and other additives into the reactor in sequence , stirred at room temperature for 0.5 hours, and mixed thoroughly.

[0030] 2. Component B polymerized diphenylmethane diisocyanate, 200kg.

[0...

Embodiment 2

[0033] 1. Prepare component A, 200kg: Weigh polyether polyol A: B251 (Solvay), 60kg, polyether polyol B, 36kg, polyester polyol: 6320LA (Nanjing Kangsude), 20kg, Foam stabilizer B-8538 (Evonik), 3kg, deionized water, 2kg, catalyst selection N,N,N',N",N"-pentamethyldiethylenetriamine, triethylenediamine, Mixture of 1,3,5-tris(dimethylaminopropyl)-hexahydrotriazine and dibutyltin dilaurate, weighing 1.6kg, 1.0kg and 0.4kg respectively, physical blowing agent HFC-365mfc / n-amyl Alkane (a mixture of HFC-365mfc and n-pentane, the weight ratio of the two is 29:21), 40kg, flame retardant TCPP, 32kg, other additives, 4kg.

[0034] Add the weighed polyether polyol A, polyether polyol B, polyester polyol, foam stabilizer, chemical foaming agent, catalyst, flame retardant, physical foaming agent and other additives into the reactor in sequence , stirred at room temperature for 0.5 hours, and mixed thoroughly.

[0035] 2. Component B polymerized diphenylmethane diisocyanate, 210kg.

[0...

Embodiment 3

[0038] 1. Preparation of component A, 200kg: Weigh polyether polyol A: B251 (Solvay), 75kg, polyether polyol B, 35kg, polyester polyol: 6320LA (Nanjing Kangsude), 20kg, Foam stabilizer B-8538 (Evonik), 3kg, deionized water, 1.8kg, catalyst selection N,N,N',N",N"-pentamethyldiethylenetriamine, triethylenediamine , 1,3,5-tris(dimethylaminopropyl)-hexahydrotriazine and dibutyltin dilaurate, the weights are 1.5kg, 1.3kg and 0.2kg respectively, physical blowing agent HFC-365mfc / normal Pentane (a mixture of HFC-365mfc and n-pentane, the weight ratio of the two is 29:21), 25kg, flame retardant TCPP, 35kg, other additives, 2.2kg.

[0039] Add the weighed polyether polyol A, polyether polyol B, polyester polyol, foam stabilizer, chemical foaming agent, catalyst, flame retardant, physical foaming agent and other additives into the reactor in sequence In, stir at room temperature for 1 hour, mix well.

[0040] 2. Component B polymerized diphenylmethane diisocyanate, 200kg.

[0041] 3. M...

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Abstract

The invention relates to a polyurethane spray-coating composite material for storage tank thermal insulation and a preparation method thereof. The composite material is composed of a component A and a component B in a weight ratio of 1:(1-1.05), wherein the component A is composed of polyether glycol A, polyether glycol B, polyester polyol, foam stabilizer, chemical foaming agent, physical foaming agent, catalyst, flame retardant and other assistants; and the component B is polymethylene polyphenyl polyisocyanate. The preparation method comprises the following steps: sequentially adding the components in the component A into a reaction kettle, and thoroughly mixing for 0.5-1 hour at normal temperature; and evenly mixing the component A and the component B in a weight ratio of 1:(1-1.05) with a high-pressure spray coater, atomizing, foaming, and quickly forming and aging the foam to obtain the product. The foam provided by the invention has the advantages of environmental protection, low heat conductivity coefficient and high flame retardancy, and is especially suitable for thermal insulation construction of tank bodies.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and in particular relates to a polyurethane spray coating composition used for storage tank heat preservation and a preparation method thereof. Background technique [0002] The insulation material of the outer layer of the storage tank is an important factor in determining the energy consumption of the storage tank. For storage tanks that need heat preservation and cold preservation, the selection of insulation materials is particularly important. At present, domestic insulation storage tanks usually use rock wool or polyurethane rigid foam as the insulation layer material. The price of rock wool is low, the construction is convenient, and the flame retardancy is good, but it has the disadvantages of easy water absorption and swelling when it meets water. Polyurethane sprayed hard foam products have excellent physical and chemical properties and convenient processing technology. They are suita...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/48C08J9/14C08J9/08C09D175/08C09D175/06C09D7/12
Inventor 宁晓龙徐业峰李欣李明友马海晶
Owner SHANDONG INOV NEW MATERIALS CO LTD
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