LNG (liquefied natural gas) carrier gradient enhancement heat-insulating material and short-process preparation method thereof

A technology for thermal insulation materials and LNG ships, which is applied in the fields of thermal insulation materials and their preparation, gradient-enhanced thermal insulation materials and their short-process preparation fields, can solve problems such as damage to thermal insulation systems, excessive thermal stress of thermal insulation materials, etc. The effect of saving glass fiber and good reinforcement effect

Inactive Publication Date: 2017-12-12
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to aim at the problem of damage to the insulation system caused by excessive thermal stress of the insulation material and the difference in the thermal expansion coefficient of the material in the insulation system of the LNG ship, and to provide a method for LNG. Gradient reinforced thermal insulation material for ship and its preparation method

Method used

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  • LNG (liquefied natural gas) carrier gradient enhancement heat-insulating material and short-process preparation method thereof
  • LNG (liquefied natural gas) carrier gradient enhancement heat-insulating material and short-process preparation method thereof
  • LNG (liquefied natural gas) carrier gradient enhancement heat-insulating material and short-process preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Selected raw materials: polyether polyol, polymethylene polyphenyl polyisocyanate, tertiary amine catalyst, organotin catalyst, decabromodiphenylethane, antimony trioxide, foam stabilizer, HFC-365mfc, continuous glass fiber mat 5.

[0043] The mass ratio of selected raw materials: 100:150:0.2:0.9:84:21:1.5:40:10.

[0044] Step 1: Dry the polyether polyol, decabromodiphenylethane powder, antimony trioxide powder and continuous glass fiber mat 5 in a forced air drying oven at 90°C for 24 hours, and then cool down to room temperature for use.

[0045] Step 2: Cut the spare continuous glass fiber mat 5 after the treatment in Step 1 into a shape suitable for the mould, and spread it evenly on the bottom of the mould.

[0046] Step 3: Add foam stabilizer, tertiary amine catalyst, organotin catalyst, decabromodiphenylethane, antimony trioxide and HFC-365mfc to polyether polyol and mix, stir evenly, and then quickly add polyol The methylene polyphenyl polyisocyanate is stirre...

Embodiment 2

[0049] Selected raw materials: polyether polyol, polymethylene polyphenyl polyisocyanate, tertiary amine catalyst, organotin catalyst, decabromodiphenylethane, antimony trioxide, foam stabilizer, HFC-365mfc, continuous glass fiber mat 5.

[0050] The mass ratio of selected raw materials: 100:150:0.2:0.9:84:21:1.5:40:20.

[0051] Step 1: Dry the polyether polyol, decabromodiphenylethane powder, antimony trioxide powder and continuous glass fiber mat 5 in a forced air drying oven at 90°C for 24 hours, and then cool down to room temperature for use.

[0052] Step 2: Cut the spare continuous glass fiber mat 5 after the treatment in Step 1 into a shape suitable for the mould, and spread it evenly on the bottom of the mould.

[0053] Step 3: Add foam stabilizer, tertiary amine catalyst, organotin catalyst, decabromodiphenylethane, antimony trioxide and HFC-365mfc to polyether polyol and mix, stir evenly, and then quickly add polyol The methylene polyphenyl polyisocyanate is stirre...

Embodiment 3

[0056] Selected raw materials: polyether polyol, polymethylene polyphenyl polyisocyanate, tertiary amine catalyst, organotin catalyst, decabromodiphenylethane, antimony trioxide, foam stabilizer, HFC-365mfc, continuous glass fiber mat 5.

[0057] The mass ratio of selected raw materials: 100:150:0.2:0.9:84:21:1.5:45:40.

[0058] Step 1: Dry the polyether polyol, decabromodiphenylethane powder, antimony trioxide powder and continuous glass fiber mat 5 in a forced air drying oven at 90°C for 24 hours, and then cool down to room temperature for use.

[0059] Step 2: Cut the spare continuous glass fiber mat 5 after the treatment in Step 1 into a shape suitable for the mould, and spread it evenly on the bottom of the mould.

[0060] Step 3: Add foam stabilizer, tertiary amine catalyst, organotin catalyst, decabromodiphenylethane, antimony trioxide and HFC-365mfc to polyether polyol and mix, stir evenly, and then quickly add polyol The methylene polyphenyl polyisocyanate is stirre...

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Abstract

The invention discloses an LNG carrier gradient enhancement heat-insulating material and a short-process preparation method thereof. The LNG carrier gradient enhancement heat-insulating material is composed of polyether polyol, polyisocyanates, foaming agent, foam stabilizer, tertiary amine catalysts, organic tin catalysts, brominated flame retardants, antimonic flame retardants and continuous glass fiber mats at a weight ratio of 100:140-160:25-50:1.5-2:0.2:0.9-1:80-85:20-25:10-40; the density of the LNG carrier gradient enhancement heat-insulating material is 70-130 kg/m3, and the limit oxygen index of the LNG carrier gradient enhancement heat-insulating material is higher than 30%. The preparation method of the LNG carrier gradient enhancement heat-insulating material comprises the processes of drying, moulding, mould foaming, curing, demoulding, surface cutting and the like. The preparation method of the LNG carrier gradient enhancement heat-insulating material solves the problem that heat-insulating materials prepared in the prior art are easy to fall off from the surface of the metal wall of a subpanel due to expansion difference, and are high in contraction stress when close to low temperature to result in cracks and heat-insulating plates are high in thermal stress to result in damage to the structure of heat-insulating layers due to high temperature difference between two surfaces. The preparation method of the LNG carrier gradient enhancement heat-insulating material is a near-set-shape production process and has the advantages of being short in process, capable of saving glass fiber, low in cost, simple in production, integrative in formation and good in product comprehensive performance.

Description

technical field [0001] The invention relates to a thermal insulation material and a preparation method thereof, in particular to a gradient-enhanced thermal insulation material for a B-type liquid cargo tank of a liquefied natural gas ship and a short-process preparation method thereof, belonging to the technical field of thermal insulation material preparation. Background technique [0002] Liquefied natural gas (LNG) is an ultra-low temperature liquid that cools natural gas, which is mainly composed of methane, to about -163°C. Natural gas liquefaction can greatly save storage and transportation space and cost. Because LNG releases less nitrogen oxides and sulfur dioxide when it is burned, it is recognized as a clean energy source. The LNG ship is the main means of transportation of liquefied natural gas, and the thermal insulation performance and safety of the cargo tank containment system are one of the important indicators for the qualification of the LNG ship. Due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08K9/06C08K7/14C08J9/14C08L75/08
Inventor 张洪斌孙小伟蔡志祥韦越位元元谢燕萍
Owner SHANGHAI JIAO TONG UNIV
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