An ultra-low temperature liquefied gas storage and transportation cold insulation module and a preparation method thereof

Abstract

The application discloses a cold-keeping module for super-low-temperature liquefied gas storage and transportation, which is composed of a stainless steel corrugated plate, high-density reinforced polyurethane foam, glass fiber aluminum foil composite material and low-density reinforced polyurethane foam from top to bottom. The application further discloses a preparation method of the cold-keeping module for super-low-temperature liquefied gas storage and transportation, which specifically comprises the following steps: (1) preparing an upper structure of the cold-keeping module; (2) preparing a lower structure of the cold-keeping module; and (3) combining the upper structure of the cold-keeping module with the lower structure of the cold-keeping module. The cold-keeping module for super-low-temperature liquefied gas storage and transportation has excellent impact strength and tensile strength, can effectively prevent low-temperature damage of a storage container shell caused by super-low-temperature liquefied gas leakage, and ensures the safety of super-low-temperature liquefied gas storage and transportation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquefied natural gas, more particularly to a cold insulation module for ultra-low temperature liquefied gas storage and transportation and a preparation method thereof. BACKGROUND

[0002] Liquefied natural gas (LNG) is natural gas compressed and cooled to its condensation point (-161.5℃) to become a liquid, usually stored in a low-temperature storage tank at about -161.5℃ and 0.1MPa, and mainly composed of methane, colorless, odorless, non-toxic and non-corrosive, and is recognized as the cleanest energy. With the increasing emphasis on environmental protection in China, the demand for liquefied natural gas is increasing.

[0003] In the storage and transportation of liquefied natural gas, a thermal insulation material with high adiabaticity, high strength and high stability in an ultra-low temperature environment is needed. Ordinary polyurethane material has excellent thermal insulation performance, but it will shrink seriously at ultra-low temperature and cannot maintain its mechanical strength at room temperature. Generally, the mechanical properties and dimensional stability of polyurethane material at low temperature can be enhanced by compounding with cheap glass fiber, and the flame retardant grade of polyurethane can be improved by adding certain flame retardants.

[0004] Patent application No. CN201610089464.3 (publication No. CN107090074A) discloses a high-flame-retardant glass fiber reinforced rigid polyurethane ultra-low temperature thermal insulation material with continuous glass fiber felt as reinforcing material and its preparation method; and patent application No. CN201610096370.9 (publication No. CN107099018A) discloses an environmentally friendly foaming agent produced super-low-temperature-resistant halogen-free flame-retardant glass fiber reinforced rigid polyurethane thermal insulation material and its preparation method. However, these two patents only describe the preparation method of the reinforced polyurethane material, and do not consider the problems in actual application process, such as low strength of polyurethane foam, easy breakage during transportation and installation, inconvenient installation, easy moisture and pollution, and inability to withstand the sharp shaking impact of LNG during sea transportation. In addition, no related patent considers the risk of leakage of liquefied natural gas during transportation due to cracking of polyurethane foam in an ultra-low temperature environment.

[0005] Therefore, how to develop a cold insulation module that can ensure the safety of ultra-low temperature liquefied natural gas storage and transportation is a problem to be solved by those skilled in the art. SUMMARY

[0006] Therefore, the present application aims to provide a cold insulation module for ultra-low temperature liquefied gas storage and transportation and a preparation method thereof to solve the problems in the prior art.

[0007] To achieve the above object, the present application adopts the following technical solutions:

[0008] The cold insulation module for ultra-low temperature liquefied gas storage and transportation is composed of a stainless steel corrugated plate, a high-density reinforced polyurethane foam, a glass fiber aluminum foil composite material and a low-density reinforced polyurethane foam from top to bottom.

[0009] Further, the thickness of the stainless steel corrugated plate is 0.5-2.5 mm; the nickel content of the stainless steel corrugated plate is 9%-12% by mass percentage, the chromium content is 17%-20%, the manganese content is 0.1%-2%, the copper content is 0.1%-1%, the silicon content is 0.1%-1%, the phosphorus content is 0.01%-0.04%, and the sulfur content is 0.01%-0.02%.

[0010] Further, the thickness of the stainless steel corrugated plate is 0.5-2.5 mm; the nickel content of the stainless steel corrugated plate is 9%-12% by mass percentage, the chromium content is 17%-20%, the manganese content is 0.1%-2%, the copper content is 0.1%-1%, the silicon content is 0.1%-1%, the phosphorus content is 0.01%-0.04%, and the sulfur content is 0.01%-0.02%.

[0011] The beneficial effects of the above further technical solutions are that the corrugated plate made of the selected stainless steel material can not only ensure that the liquefied gas does not leak in the -170℃ ultra-low temperature storage environment, but also can fully withstand the impact of the stainless steel plate due to the sloshing during the liquid cargo transportation and the deformation due to thermal expansion and contraction, ensuring the safety and reliability of the liquefied gas during the ultra-low temperature transportation.

[0012] Further, the density of the high-density reinforced polyurethane foam is 200-500 kg / m 3 , and the thickness is 50-250 mm; the high-density reinforced polyurethane foam is prepared by pouring a polyurethane foaming combination material and polymeric diphenylmethane diisocyanate (polymeric MDI) on a glass fiber continuous felt after blending, and the mass ratio of the polyurethane foaming combination material, the polymeric diphenylmethane diisocyanate and the glass fiber continuous felt is (5-10):(5-10):1; wherein the polyurethane foaming combination material is prepared by mixing polymer polyol with a hydroxyl value of 300-500 mg KOH / g, phosphate ester flame retardant, polysiloxane surfactant, amine catalyst, water and pentafluoropropane in a mass ratio of (105-155):(5-15):(0.5-3):(0.1-1):(0.1-1):1.

[0013] Further, the density of the high-density reinforced polyurethane foam is 200-500 kg / m 3, and the thickness is 50-250 mm; the high-density reinforced polyurethane foam is prepared by pouring a polyurethane foaming compound and polymeric diphenylmethane diisocyanate into a glass fiber continuous felt after blending, and the mass ratio of the polyurethane foaming compound, the polymeric diphenylmethane diisocyanate and the glass fiber continuous felt is (6-7):(5-6):1; wherein the polyurethane foaming compound is prepared by mixing a polymer polyol with a hydroxyl value of 400 mgKOH / g, a phosphate ester flame retardant, a polysiloxane surfactant, an amine catalyst, water and pentafluoropropane according to a mass ratio of 130:10:2:0.5:0.5:1.

[0014] Further, the phosphate ester flame retardant is triethyl phosphate, the polysiloxane surfactant is polyurethane foam stabilizer (hard polyurethane foam foam stabilizer) M-8809 produced by Jiangsu Meishide Chemical Co., Ltd., and the amine catalyst is N,N-dimethylcyclohexylamine.

[0015] The beneficial effect of adopting the above further technical scheme is that the high-density reinforced polyurethane foam selected by the application has higher mechanical strength, and can further improve the ability of the cold preservation module to withstand deformation.

[0016] Further, the thickness of the glass fiber aluminum foil composite material is 0.2-1.2 mm; the glass fiber aluminum foil composite material is prepared by hot pressing a glass fiber cloth and an aluminum foil through a polyurethane adhesive, and the mass ratio of the glass fiber cloth, the aluminum foil and the polyurethane adhesive is (50-100):(10-30):1; wherein the polyurethane adhesive is prepared by mixing a polyether polyol and diphenylmethane diisocyanate according to a mass ratio of (1-10):1.

[0017] Further, the thickness of the glass fiber aluminum foil composite material is 0.5-0.9 mm; the glass fiber aluminum foil composite material is prepared by hot pressing a glass fiber cloth and an aluminum foil through a polyurethane adhesive, and the mass ratio of the glass fiber cloth, the aluminum foil and the polyurethane adhesive is (50-60):(20-30):1; wherein the polyurethane adhesive is prepared by mixing a polyether polyol and diphenylmethane diisocyanate according to a mass ratio of 5:1.

[0018] The beneficial effect of adopting the above further technical scheme is that the glass fiber aluminum foil composite material selected by the application forms a completely closed secondary shielding layer, which can ensure that the liquefied gas does not leak to the outside for at least 15 days in the event of leakage of the stainless steel corrugated board.

[0019] Further, the density of the low-density reinforced polyurethane foam is 70-150 kg / m 3, the thickness is 150-350mm; the low-density reinforced polyurethane foam is prepared by pouring the polyurethane foaming combination material and the polymeric diphenylmethane diisocyanate after being blended on the glass fiber continuous felt, and the mass ratio of the polyurethane foaming combination material, the polymeric diphenylmethane diisocyanate and the glass fiber continuous felt is (10-20):(10-20):1; wherein the polyurethane foaming combination material is prepared by mixing the polymer polyol with a hydroxyl value of 300-500mg KOH / g, the phosphate ester flame retardant, the polysiloxane surfactant, the amine catalyst, water and the pentafluoropropane according to the mass ratio of (105-155):(5-15):(0.5-3):(0.1-1):(0.1-1):1.

[0020] Further, the density of the low-density reinforced polyurethane foam is 70-110kg / m 3 , the thickness is 150-350mm; the low-density reinforced polyurethane foam is prepared by pouring the polyurethane foaming combination material and the polymeric diphenylmethane diisocyanate after being blended on the glass fiber continuous felt, and the mass ratio of the polyurethane foaming combination material, the polymeric diphenylmethane diisocyanate and the glass fiber continuous felt is (13-15):(15-18):1; wherein the polyurethane foaming combination material is prepared by mixing the polymer polyol with a hydroxyl value of 400mg KOH / g, the phosphate ester flame retardant, the polysiloxane surfactant, the amine catalyst, water and the pentafluoropropane according to the mass ratio of 130:10:2:0.5:0.5:1.

[0021] Further, the phosphate ester flame retardant is triethyl phosphate, the polysiloxane surfactant is the polyurethane foam stabilizer (hard polyurethane foam foam stabilizer) M-8809 produced by Jiangsu Meishide Chemical Co., Ltd., and the amine catalyst is N,N-dimethylcyclohexylamine.

[0022] The beneficial effects of the above further technical scheme are that the low-density reinforced polyurethane foam selected by the application has more excellent cold preservation effect while improving the mechanical strength, can effectively reduce the evaporation rate of liquefied gas, and thus improve the economy of liquefied gas transportation.

[0023] A preparation method of the cold preservation module for the super-low-temperature liquefied gas storage and transportation, specifically comprising the following steps:

[0024] (1) Preparation of the upper structure of the cold preservation module

[0025] First, the polyurethane foaming combination material and the polymeric diphenylmethane diisocyanate are mixed, and then poured on the glass fiber continuous felt, and then free foaming is carried out in the conveying chain plate, and after natural curing, the high-density reinforced polyurethane foam is obtained, and after layer cutting, the high-density reinforced polyurethane foam is compressed with the stainless steel corrugated board through the polyurethane rapid curing adhesive to obtain the upper structure of the cold preservation module.

[0026] (2) Preparation of the lower structure of the cold insulation module

[0027] The glass fiber cloth and the aluminum foil are hot-pressed and compounded by the polyurethane adhesive to obtain a glass fiber aluminum foil composite material, which is ready for use;

[0028] The polyurethane foaming compound is mixed with polymeric diphenylmethane diisocyanate, then poured on the glass fiber continuous felt, and foamed in a restricted space composed of high-strength chain plates on the top, bottom, left and right sides. During the foaming process, kraft paper is used to isolate the low-density reinforced polyurethane foam from the lower and left and right chain plates, and the glass fiber aluminum foil composite material is introduced at the top to directly bond and compound with the low-density reinforced polyurethane foam. After natural curing, cutting is performed to obtain the lower structure of the cold insulation module.

[0029] (3) Compound of the upper structure of the cold insulation module and the lower structure of the cold insulation module

[0030] The upper structure of the cold insulation module and the lower structure of the cold insulation module are pressed together by polyurethane fast curing adhesive to obtain the cold insulation module for super-low temperature liquefied gas storage and transportation.

[0031] Further, in the above steps (1) and (3), the polyurethane fast curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine in a mass ratio of (1-10):(1-10):0.1.

[0032] Further, in the above steps (1) and (3), the polyurethane fast curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine in a mass ratio of 5:5:0.1.

[0033] Further, in the above step (1), the mixing device is a normal pressure high-speed mixing head, the speed is 1000-3000 r / min, the temperature is 10-40℃, the discharge amount is 50-100 kg / min; the temperature of the conveying chain plate is 15-45℃, the forward speed is 1-2 m / min; the natural curing time is 60-120 days; the pressing device is a press, the temperature is 15-45℃, the pressure is 0.5-2.0 bar, and the time is 10-30 min.

[0034] Further, in the above step (1), the mixing device is a normal pressure high-speed mixing head, the speed is 2000-2500 r / min, the temperature is 15-20℃, the discharge amount is 50-70 kg / min; the temperature of the conveying chain plate is 25-35℃, the forward speed is 1.5-2 m / min; the natural curing time is 100-120 days; the pressing device is a press, the temperature is 15-25℃, the pressure is 0.5-1.0 bar, and the time is 15-20 min.

[0035] Further, in the step (2), the hot-pressing equipment is a hot-pressing oil press, the temperature is 100-200 DEG C, the pressure is 1-5 bar, and the time is 5-15 min; the mixing equipment is a high-pressure mixing head, the pressure is 50-300 bar, the temperature is 15-35 DEG C, the output is 20-120 kg / min; the thickness of the high-strength chain plate is 5-25 mm, the flatness is ±0.5-1 mm, the temperature is 15-45 DEG C, and the advancing speed is 0.5-2.5 m / min; the apparent density of the kraft paper is 90-250 g / m 2 ; and the natural curing time is 60-120 days.

[0036] Further, in the step (2), the hot-pressing equipment is a hot-pressing oil press, the temperature is 150-180 DEG C, the pressure is 1-2 bar, and the time is 5-8 min; the mixing equipment is a high-pressure mixing head, the pressure is 50-100 bar, the temperature is 15-25 DEG C, the output is 60-80 kg / min; the thickness of the high-strength chain plate is 5-10 mm, the flatness is ±0.5-1 mm, the temperature is 20-30 DEG C, and the advancing speed is 1-1.5 m / min; the apparent density of the kraft paper is 150-200 g / m 2 ; and the natural curing time is 100-120 days.

[0037] The beneficial effects of the further technical solution are that the surface flatness of the cold insulation module prepared by the further technical solution is better, and the loss of the edge and corner materials in subsequent finishing is less.

[0038] Further, in the step (3), the pressing equipment is a press, the temperature is 15-45 DEG C, the pressure is 0.5-2.0 bar, and the time is 10-30 min.

[0039] Further, in the step (3), the pressing equipment is a press, the temperature is 15-25 DEG C, the pressure is 0.5-0.9 bar, and the time is 20-30 min.

[0040] According to the technical solution, the beneficial effects of the present application compared with the prior art are as follows:

[0041] The cold insulation module of the application uses a stainless steel corrugated board as the upper panel of high-density reinforced polyurethane foam, on the one hand, the surface strength of the cold insulation module after being compounded with the stainless steel corrugated board is greatly improved, which can ensure that the cold insulation module is not easy to be damaged during transportation and installation; on the other hand, the stainless steel corrugated board can also be used as a shielding material to ensure the safe storage of ultra-low temperature liquefied gas, and can withstand the impact and shaking of ultra-low temperature liquefied gas during transportation. At the same time, the cold insulation module of the application uses a glass fiber aluminum foil composite material as the upper panel of low-density reinforced polyurethane foam, which can be used as another layer of shielding material to effectively prevent the low-temperature damage of the storage container shell caused by the leakage of ultra-low temperature liquefied gas due to the damage of the stainless steel corrugated board, and ensure the safety of ultra-low temperature liquefied gas storage and transportation. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of the cold insulation module for ultra-low temperature liquefied gas storage and transportation of the application.

[0043] Figure 2 It is a process flow chart of the preparation method of the cold insulation module for ultra-low temperature liquefied gas storage and transportation of the application. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0045] In the following examples and comparative examples, the polysiloxane surfactant is a polyurethane foam stabilizer (hard polyurethane foam foam stabilizer) M-8809 produced by Jiangsu Meishide Chemical Co., Ltd.

[0046] Example 1

[0047] The cold insulation module for ultra-low temperature liquefied gas storage and transportation, as shown in Figure 1 from top to bottom, is composed of a stainless steel corrugated board, a high-density reinforced polyurethane foam, a glass fiber aluminum foil composite material and a low-density reinforced polyurethane foam in sequence;

[0048] The thickness of the stainless steel corrugated board is 0.5 mm; the nickel content of the stainless steel corrugated board is 9% by mass percentage, the chromium content is 17%, the manganese content is 0.1%, the copper content is 0.1%, the silicon content is 0.1%, the phosphorus content is 0.01%, and the sulfur content is 0.01%;

[0049] The density of the high-density reinforced polyurethane foam is 200 kg / m 3The low-density reinforced polyurethane foam has a density of 70 kg / m 3 , and a thickness of 150 mm; the low-density reinforced polyurethane foam is prepared by pouring a polyurethane foaming compound and polymeric diphenylmethane diisocyanate on a glass fiber continuous felt after being blended, and the mass ratio of the polyurethane foaming compound, the polymeric diphenylmethane diisocyanate and the glass fiber continuous felt is 10:10:1; wherein the polyurethane foaming compound is prepared by mixing polymer polyol with a hydroxyl value of 400 mg KOH / g, triethyl phosphate, polysiloxane surfactant, N,N-dimethylcyclohexylamine, water and pentafluoropropane according to a mass ratio of 130:10:2:0.5:0.5:1;

[0050] The glass fiber aluminum foil composite material has a thickness of 0.2 mm; the glass fiber aluminum foil composite material is prepared by hot pressing a glass fiber cloth and an aluminum foil through a polyurethane adhesive, and the mass ratio of the glass fiber cloth, the aluminum foil and the polyurethane adhesive is 50:10:1; wherein the polyurethane adhesive is prepared by mixing polyether polyol and diphenylmethane diisocyanate according to a mass ratio of 5:1;

[0051] The low-density reinforced polyurethane foam has a density of 70 kg / m 3 , and a thickness of 150 mm; the low-density reinforced polyurethane foam is prepared by pouring a polyurethane foaming compound and polymeric diphenylmethane diisocyanate on a glass fiber continuous felt after being blended, and the mass ratio of the polyurethane foaming compound, the polymeric diphenylmethane diisocyanate and the glass fiber continuous felt is 10:10:1; wherein the polyurethane foaming compound is prepared by mixing polymer polyol with a hydroxyl value of 400 mg KOH / g, triethyl phosphate, polysiloxane surfactant, N,N-dimethylcyclohexylamine, water and pentafluoropropane according to a mass ratio of 130:10:2:0.5:0.5:1;

[0052] The preparation method of the cold insulation module for super-low-temperature liquefied gas storage and transportation, as shown in Figure 2 , specifically includes the following steps:

[0053] (1) Preparation of the upper structure of the cold insulation module

[0054] The polyurethane foaming combination material and polymeric diphenylmethane diisocyanate are first mixed in a normal-pressure high-speed mixing head at a speed of 1000 r / min and a temperature of 10°C, and the discharge amount is 50 kg / min; then, the mixture is poured on a flattened glass fiber continuous mat and enters a conveying chain plate for free foaming, the temperature of the conveying chain plate is 15°C, and the advancing speed is 1 m / min; after natural curing for 60 days, a high-density reinforced polyurethane foam is obtained, which is cut into layers and then combined with a stainless steel corrugated board through polyurethane rapid curing adhesive and is pressed in a press, the pressing temperature is 15°C, the pressure is 0.5 bar, and the time is 10 min, to obtain a cold storage module upper structure; wherein the polyurethane rapid curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine at a mass ratio of 5:5:0.1.

[0055] (2) Preparation of a cold storage module lower structure

[0056] The glass fiber cloth and the aluminum foil are combined through polyurethane adhesive and are subjected to hot pressing in a hot pressing oil press, the temperature is 100°C, the pressure is 1 bar, and the time is 5 min, to obtain a glass fiber aluminum foil composite material, which is ready for use.

[0057] The polyurethane foaming combination material and polymeric diphenylmethane diisocyanate are first mixed in a high-pressure mixing head at a pressure of 50 bar and a temperature of 15°C, and the discharge amount is 20 kg / min; then, the mixture is poured on a flattened glass fiber continuous mat and enters a confined space composed of high-strength chain plates on the top, bottom, left and right sides for foaming, the thickness of the high-strength chain plates is 5 mm, the flatness is ±0.5 mm, the temperature is 15°C, and the advancing speed is 0.5 m / min; during the foaming process, kraft paper with an apparent density of 90 g / m 2 is used to isolate the low-density reinforced polyurethane foam from the lower part and the left and right side chain plates, and the glass fiber aluminum foil composite material is introduced at the top to directly bond and combine with the low-density reinforced polyurethane foam, and after natural curing for 60 days, the cold storage module lower structure is obtained by cutting.

[0058] (3) Combination of the cold storage module upper structure and the cold storage module lower structure

[0059] The cold storage module upper structure and the cold storage module lower structure are combined through polyurethane rapid curing adhesive and are subjected to pressing in a press, the pressing temperature is 15°C, the pressure is 0.5 bar, and the time is 10 min, to obtain the cold storage module; wherein the polyurethane rapid curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine at a mass ratio of 5:5:0.1.

[0060] Example 2

[0061] The cold storage module for ultra-low temperature liquefied gas storage and transportation, as shown in Figure 1As shown in FIG. 1, the super-low-temperature liquefied gas storage and transportation cold insulation module is composed of, from top to bottom, a stainless steel corrugated plate, a high-density reinforced polyurethane foam, a glass fiber aluminum foil composite material, and a low-density reinforced polyurethane foam.

[0062] The stainless steel corrugated plate has a thickness of 2.5 mm, and contains, by mass percentage, 12% nickel, 20% chromium, 2% manganese, 1% copper, 1% silicon, 0.04% phosphorus, and 0.02% sulfur.

[0063] The high-density reinforced polyurethane foam has a density of 500 kg / m 3 , and a thickness of 250 mm. The high-density reinforced polyurethane foam is prepared by pouring a polyurethane foaming compound and polymeric diphenylmethane diisocyanate onto a glass fiber continuous felt after blending, and the mass ratio of the polyurethane foaming compound, the polymeric diphenylmethane diisocyanate, and the glass fiber continuous felt is 10:10:1. The polyurethane foaming compound is prepared by mixing, according to a mass ratio of 105:5:0.5:0.1:0.1:1, a polymer polyol with a hydroxyl value of 300 mg KOH / g, triethyl phosphate, a polysiloxane surfactant, N,N-dimethylcyclohexylamine, water, and pentafluoropropane.

[0064] The glass fiber aluminum foil composite material has a thickness of 1.2 mm. The glass fiber aluminum foil composite material is prepared by hot pressing a glass fiber cloth and an aluminum foil through a polyurethane adhesive, and the mass ratio of the glass fiber cloth, the aluminum foil, and the polyurethane adhesive is 100:30:1. The polyurethane adhesive is prepared by mixing, according to a mass ratio of 1:1, a polyether polyol and diphenylmethane diisocyanate.

[0065] The low-density reinforced polyurethane foam has a density of 150 kg / m 3 , and a thickness of 350 mm. The low-density reinforced polyurethane foam is prepared by pouring a polyurethane foaming compound and polymeric diphenylmethane diisocyanate onto a glass fiber continuous felt after blending, and the mass ratio of the polyurethane foaming compound, the polymeric diphenylmethane diisocyanate, and the glass fiber continuous felt is 20:20:1. The polyurethane foaming compound is prepared by mixing, according to a mass ratio of 105:5:0.5:0.1:0.1:1, a polymer polyol with a hydroxyl value of 300 mg KOH / g, triethyl phosphate, a polysiloxane surfactant, N,N-dimethylcyclohexylamine, water, and pentafluoropropane.

[0066] The preparation method of the above-mentioned super-low-temperature liquefied gas storage and transportation cold insulation module, as shown in FIG. 1, specifically includes the following steps: Figure 2

[0067] (1) Preparation of the upper structure of the cold insulation module

[0068] ​The polyurethane foaming compound and polymeric diphenylmethane diisocyanate are first mixed in a normal-pressure high-speed mixing head at a speed of 3000 r / min and a temperature of 40℃, and the output is 100 kg / min; then they are poured on a flattened glass fiber continuous mat and enter a conveying chain plate for free foaming, the temperature of the conveying chain plate is 45℃, and the advancing speed is 2 m / min; after natural curing for 120 days, a high-density reinforced polyurethane foam is obtained, which is cut into layers and combined with a stainless steel corrugated board by using a polyurethane fast curing adhesive to enter a press for pressing, the pressing temperature is 45℃, the pressure is 2.0 bar, and the time is 30 min, thereby obtaining a cold storage module upper structure; wherein the polyurethane fast curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine at a mass ratio of 1:1:0.1;

[0069] (2) Preparation of a cold storage module lower structure

[0070] The glass fiber cloth and the aluminum foil are combined by using a polyurethane adhesive to enter a hot-pressing oil press for hot pressing, the temperature is 200℃, the pressure is 5 bar, and the time is 15 min, thereby obtaining a glass fiber aluminum foil composite material for standby use;

[0071] The polyurethane foaming compound and polymeric diphenylmethane diisocyanate are first mixed in a high-pressure mixing head at a pressure of 300 bar and a temperature of 35℃, and the output is 120 kg / min; then they are poured on a flattened glass fiber continuous mat and enter a restricted space composed of high-strength chain plates on the top, bottom, left and right sides for foaming, the thickness of the high-strength chain plates is 25 mm, the flatness is ±1 mm, the temperature is 45℃, and the advancing speed is 2.5 m / min; during the foaming process, kraft paper with an apparent density of 250 g / m 2 is used to isolate the low-density reinforced polyurethane foam from the lower part and the left and right side chain plates, and the glass fiber aluminum foil composite material is introduced at the top to directly adhere to the low-density reinforced polyurethane foam, and after natural curing for 120 days, the cold storage module lower structure is obtained by cutting;

[0072] (3) Combination of the cold storage module upper structure and the cold storage module lower structure

[0073] The cold storage module upper structure and the cold storage module lower structure are combined by using a polyurethane fast curing adhesive to enter a press for pressing, the pressing temperature is 45℃, the pressure is 2.0 bar, and the time is 30 min, thereby obtaining a super-low-temperature liquefied gas storage and transportation cold storage module; wherein the polyurethane fast curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine at a mass ratio of 1:1:0.1.

[0074] Example 3

[0075] A super-low-temperature liquefied gas storage and transportation cold storage module, such asFigure 1 The uppermost stainless steel corrugated plate, the high-density reinforced polyurethane foam, the glass fiber aluminum foil composite material and the low-density reinforced polyurethane foam are sequentially combined from top to bottom as shown in the figure.

[0076] The stainless steel corrugated plate has a thickness of 0.6 mm; the stainless steel corrugated plate contains 11% of nickel, 19% of chromium, 0.2% of manganese, 0.9% of copper, 0.2% of silicon, 0.03% of phosphorus and 0.01% of sulfur by mass percentage;

[0077] The high-density reinforced polyurethane foam has a density of 250 kg / m 3 and a thickness of 200 mm; the high-density reinforced polyurethane foam is prepared by pouring a polyurethane foaming compound and polymeric diphenylmethane diisocyanate on a glass fiber continuous felt after blending, and the mass ratio of the polyurethane foaming compound, the polymeric diphenylmethane diisocyanate and the glass fiber continuous felt is 6:8:1; the polyurethane foaming compound is prepared by mixing polymer polyol with a hydroxyl value of 400 mg KOH / g, triethyl phosphate, polysiloxane surfactant, N,N-dimethylcyclohexylamine, water and pentafluoropropane in a mass ratio of 130:10:2:0.5:0.5:1;

[0078] The glass fiber aluminum foil composite material has a thickness of 0.4 mm; the glass fiber aluminum foil composite material is prepared by hot pressing a glass fiber cloth and an aluminum foil through a polyurethane adhesive, and the mass ratio of the glass fiber cloth, the aluminum foil and the polyurethane adhesive is 60:20:1; the polyurethane adhesive is prepared by mixing polyether polyol and diphenylmethane diisocyanate in a mass ratio of 5:1;

[0079] The low-density reinforced polyurethane foam has a density of 90 kg / m 3 and a thickness of 300 mm; the low-density reinforced polyurethane foam is prepared by pouring a polyurethane foaming compound and polymeric diphenylmethane diisocyanate on a glass fiber continuous felt after blending, and the mass ratio of the polyurethane foaming compound, the polymeric diphenylmethane diisocyanate and the glass fiber continuous felt is 15:15:1; the polyurethane foaming compound is prepared by mixing polymer polyol with a hydroxyl value of 400 mg KOH / g, triethyl phosphate, polysiloxane surfactant, N,N-dimethylcyclohexylamine, water and pentafluoropropane in a mass ratio of 130:10:2:0.5:0.5:1;

[0080] The preparation method of the cold insulation module for the above-mentioned ultra-low temperature liquefied gas storage and transportation, as shown in Figure 2 , specifically includes the following steps:

[0081] (1) Preparation of the upper structure of the cold insulation module

[0082] The polyurethane foaming compound and polymeric diphenylmethane diisocyanate are first mixed in a normal-pressure high-speed mixing head at a speed of 1500 r / min and a temperature of 20 ℃, and the discharge amount is 60 kg / min; then they are poured on a flattened glass fiber continuous mat and enter a conveying chain plate for free foaming, the temperature of the conveying chain plate is 35 ℃, and the advancing speed is 1.8 m / min; after natural curing for 90 days, a high-density reinforced polyurethane foam is obtained, which is cut into layers and then combined with a stainless steel corrugated board through polyurethane rapid curing adhesive and is pressed in a press, the pressing temperature is 35 ℃, the pressure is 1.6 bar, and the time is 30 min, to obtain a cold-keeping module upper structure; wherein the polyurethane rapid curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine at a mass ratio of 5:5:0.1.

[0083] (2) Preparation of a cold-keeping module lower structure

[0084] The glass fiber cloth and the aluminum foil are combined through polyurethane adhesive and are subjected to hot pressing in a hot pressing oil press, the temperature is 150 ℃, the pressure is 3 bar, and the time is 10 min, to obtain a glass fiber aluminum foil composite material, which is ready for use.

[0085] The polyurethane foaming compound and polymeric diphenylmethane diisocyanate are first mixed in a high-pressure mixing head at a pressure of 120 bar and a temperature of 20 ℃, and the discharge amount is 40 kg / min; then they are poured on a flattened glass fiber continuous mat and enter a confined space composed of high-strength chain plates on the top, bottom, left and right sides for foaming, the thickness of the high-strength chain plates is 10 mm, the flatness is ±0.5 mm, the temperature is 25 ℃, and the advancing speed is 1.5 m / min; during the foaming process, kraft paper with an apparent density of 110 g / m 2 is used to isolate the low-density reinforced polyurethane foam from the lower part and the left and right side chain plates, and the glass fiber aluminum foil composite material is introduced at the top to directly adhere to the low-density reinforced polyurethane foam, and after curing for 100 days, the cold-keeping module lower structure is obtained by cutting.

[0086] (3) Combination of the cold-keeping module upper structure and the cold-keeping module lower structure

[0087] The cold-keeping module upper structure and the cold-keeping module lower structure are combined through polyurethane rapid curing adhesive and are pressed in a press, the pressing temperature is 40 ℃, the pressure is 1.0 bar, and the time is 20 min, to obtain a cold-keeping module for ultra-low temperature liquefied gas storage and transportation; wherein the polyurethane rapid curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine at a mass ratio of 5:5:0.1.

[0088] Example 4

[0089] The cold-keeping module for ultra-low temperature liquefied gas storage and transportation, as shown inFigure 1 As shown in FIG. 1, the super-low-temperature liquefied gas storage and transportation cold insulation module is composed of, from top to bottom, a stainless steel corrugated plate, a high-density reinforced polyurethane foam, a glass fiber aluminum foil composite material, and a low-density reinforced polyurethane foam;

[0090] The stainless steel corrugated plate has a thickness of 1.5 mm, and contains, by mass percentage, 10% of nickel, 18% of chromium, 1.2% of manganese, 0.6% of copper, 0.6% of silicon, 0.01% of phosphorus, and 0.01% of sulfur;

[0091] The high-density reinforced polyurethane foam has a density of 450 kg / m 3 and a thickness of 90 mm. The high-density reinforced polyurethane foam is prepared by pouring a polyurethane foaming compound and polymeric diphenylmethane diisocyanate onto a glass fiber continuous felt after blending, and the mass ratio of the polyurethane foaming compound, the polymeric diphenylmethane diisocyanate, and the glass fiber continuous felt is 8:6:1. The polyurethane foaming compound is prepared by mixing, at a mass ratio of 155:15:3:1:1:1, a polymer polyol with a hydroxyl value of 500 mg KOH / g, triethyl phosphate, a polysiloxane surfactant, N,N-dimethylcyclohexylamine, water, and pentafluoropropane.

[0092] The glass fiber aluminum foil composite material has a thickness of 0.8 mm. The glass fiber aluminum foil composite material is prepared by hot pressing a glass fiber cloth and an aluminum foil through a polyurethane adhesive, and the mass ratio of the glass fiber cloth, the aluminum foil, and the polyurethane adhesive is 90:15:1. The polyurethane adhesive is prepared by mixing, at a mass ratio of 10:1, a polyether polyol and diphenylmethane diisocyanate.

[0093] The low-density reinforced polyurethane foam has a density of 110 kg / m 3 and a thickness of 250 mm. The low-density reinforced polyurethane foam is prepared by pouring a polyurethane foaming compound and polymeric diphenylmethane diisocyanate onto a glass fiber continuous felt after blending, and the mass ratio of the polyurethane foaming compound, the polymeric diphenylmethane diisocyanate, and the glass fiber continuous felt is 10:20:1. The polyurethane foaming compound is prepared by mixing, at a mass ratio of 155:15:3:1:1:1, a polymer polyol with a hydroxyl value of 500 mg KOH / g, triethyl phosphate, a polysiloxane surfactant, N,N-dimethylcyclohexylamine, water, and pentafluoropropane.

[0094] The preparation method of the above-mentioned super-low-temperature liquefied gas storage and transportation cold insulation module, as shown in FIG. 1, specifically includes the following steps: Figure 2

[0095] (1) Preparation of the upper structure of the cold insulation module

[0096] ​The polyurethane foaming compound and polymeric diphenylmethane diisocyanate are first mixed in a normal-pressure high-speed mixing head at a speed of 1800 r / min and a temperature of 30 DEG C, and the discharge rate is 80 kg / min; then they are poured on a flattened glass fiber continuous mat and enter a conveying chain plate for free foaming, the temperature of the conveying chain plate is 25 DEG C, and the advancing speed is 1.5 m / min; after natural curing for 80 days, a high-density reinforced polyurethane foam is obtained, which is cut into layers and then combined with a stainless steel corrugated board by using a polyurethane fast curing adhesive to enter a press for pressing, the pressing temperature is 30 DEG C, the pressure is 1.2 bar, and the time is 20 min, thereby obtaining a cold storage module upper structure; wherein the polyurethane fast curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine at a mass ratio of 10:10:0.1;

[0097] (2) Preparation of a cold storage module lower structure

[0098] The glass fiber cloth and the aluminum foil are combined by using a polyurethane adhesive to enter a hot-pressing oil press for hot pressing, the temperature is 180 DEG C, the pressure is 2 bar, and the time is 13 min, thereby obtaining a glass fiber aluminum foil composite material for standby use;

[0099] The polyurethane foaming compound and polymeric diphenylmethane diisocyanate are first mixed in a high-pressure mixing head at a pressure of 200 bar and a temperature of 25 DEG C, and the discharge rate is 50 kg / min; then they are poured on a flattened glass fiber continuous mat and enter a confined space composed of high-strength chain plates on the top, bottom, left and right sides for foaming, the thickness of the high-strength chain plates is 8 mm, the flatness is ±0.5 mm, the temperature is 30 DEG C, and the advancing speed is 1.0 m / min; during the foaming process, kraft paper with an apparent density of 150 g / m 2 is used to isolate the low-density reinforced polyurethane foam from the lower part and the left and right side chain plates, and the glass fiber aluminum foil composite material is introduced at the top to directly adhere to the low-density reinforced polyurethane foam, and after curing for 90 days, the cold storage module lower structure is obtained by cutting;

[0100] (3) Combination of the cold storage module upper structure and the cold storage module lower structure

[0101] The cold storage module upper structure and the cold storage module lower structure are combined by using a polyurethane fast curing adhesive to enter a press for pressing, the pressing temperature is 30 DEG C, the pressure is 1.7 bar, and the time is 25 min, thereby obtaining a super-low-temperature liquefied gas storage and transportation cold storage module; wherein the polyurethane fast curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine at a mass ratio of 10:10:0.1.

[0102] Comparative Example 1

[0103] The super-low-temperature liquefied gas storage and transportation cold insulation module is composed of birch plywood, high-density reinforced polyurethane foam, glass fiber aluminum foil composite material and low-density reinforced polyurethane foam from top to bottom.

[0104] The density of the birch plywood is 700 kg / m 3 , and the thickness is 2 mm.

[0105] The density of the high-density reinforced polyurethane foam is 350 kg / m 3 , and the thickness is 110 mm; the high-density reinforced polyurethane foam is prepared by pouring polyurethane foaming compound and polymeric diphenylmethane diisocyanate on a glass fiber continuous felt after blending, and the mass ratio of the polyurethane foaming compound, the polymeric diphenylmethane diisocyanate and the glass fiber continuous felt is 7:9:1; wherein the polyurethane foaming compound is prepared by mixing polymer polyol with a hydroxyl value of 400 mg KOH / g, triethyl phosphate, polysiloxane surfactant, N,N-dimethylcyclohexylamine, water and pentafluoropropane according to a mass ratio of 130:10:2:0.5:0.5:1.

[0106] The thickness of the glass fiber aluminum foil composite material is 1 mm; the glass fiber aluminum foil composite material is prepared by hot pressing the glass fiber cloth and the aluminum foil through the polyurethane adhesive, and the mass ratio of the glass fiber cloth, the aluminum foil and the polyurethane adhesive is 80:10:1; wherein the polyurethane adhesive is prepared by mixing polyether polyol and diphenylmethane diisocyanate according to a mass ratio of 5:1.

[0107] The density of the low-density reinforced polyurethane foam is 80 kg / m 3 , and the thickness is 300 mm; the low-density reinforced polyurethane foam is prepared by pouring polyurethane foaming compound and polymeric diphenylmethane diisocyanate on a glass fiber continuous felt after blending, and the mass ratio of the polyurethane foaming compound, the polymeric diphenylmethane diisocyanate and the glass fiber continuous felt is 10:10:1; wherein the polyurethane foaming compound is prepared by mixing polymer polyol with a hydroxyl value of 400 mg KOH / g, triethyl phosphate, polysiloxane surfactant, N,N-dimethylcyclohexylamine, water and pentafluoropropane according to a mass ratio of 130:10:2:0.5:0.5:1.

[0108] The preparation method of the super-low-temperature liquefied gas storage and transportation cold insulation module, specifically includes the following steps:

[0109] (1) Preparation of the upper structure of the cold insulation module

[0110] The polyurethane foaming compound and polymeric diphenylmethane diisocyanate are first mixed in a normal-pressure high-speed mixing head at a speed of 2000 r / min and a temperature of 25 °C, and the output is 70 kg / min; then they are poured on a flattened glass fiber continuous mat and enter a conveying chain plate for free foaming, the temperature of the conveying chain plate is 25 °C, and the advancing speed is 1.8 m / min; after natural curing for 100 days, a high-density reinforced polyurethane foam is obtained, which is cut into layers and then combined with a birch plywood through a polyurethane rapid curing adhesive to enter a press for pressing, the pressing temperature is 30 °C, the pressure is 1.5 bar, and the time is 30 min, to obtain an upper structure of a cold insulation module; wherein the polyurethane rapid curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine at a mass ratio of 5:5:0.1.

[0111] (2) Preparation of a lower structure of a cold insulation module

[0112] The glass fiber cloth and the aluminum foil are combined by a polyurethane adhesive and then enter a hot-pressing oil press for hot pressing, the temperature is 120 °C, the pressure is 4 bar, and the time is 15 min, to obtain a glass fiber aluminum foil composite material for standby use.

[0113] The polyurethane foaming compound and polymeric diphenylmethane diisocyanate are first mixed in a high-pressure mixing head at a pressure of 250 bar and a temperature of 35 °C, and the output is 40 kg / min; then they are poured on a flattened glass fiber continuous mat and enter a confined space composed of high-strength chain plates on the top, bottom, left and right sides for foaming, the thickness of the high-strength chain plates is 10 mm, the flatness is ±0.5 mm, the temperature is 25 °C, and the advancing speed is 1.5 m / min; during the foaming process, kraft paper with an apparent density of 130 g / m 2 is used to isolate the low-density reinforced polyurethane foam from the lower part and the left and right side chain plates, and the glass fiber aluminum foil composite material is introduced at the top to directly adhere to the low-density reinforced polyurethane foam, and after curing for 90 days, the lower structure of the cold insulation module is obtained by cutting.

[0114] (3) Combination of the upper structure of the cold insulation module and the lower structure of the cold insulation module

[0115] The upper structure of the cold insulation module and the lower structure of the cold insulation module are combined by a polyurethane rapid curing adhesive and then enter a press for pressing, the pressing temperature is 20 °C, the pressure is 1.5 bar, and the time is 30 min, to obtain a cold insulation module for ultra-low temperature liquefied gas storage and transportation; wherein the polyurethane rapid curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine at a mass ratio of 5:5:0.1.

[0116] Comparative Example 2

[0117] The super-low-temperature liquefied gas storage and transportation cold insulation module is composed of a stainless steel corrugated plate, a high-density reinforced polyurethane foam, an ordinary aluminum plate and a low-density reinforced polyurethane foam from top to bottom.

[0118] The stainless steel corrugated plate has a thickness of 1.8 mm, and contains 9% of nickel, 18% of chromium, 1% of manganese, 0.5% of copper, 0.65% of silicon, 0.01% of phosphorus and 0.01% of sulfur by mass percentage.

[0119] The high-density reinforced polyurethane foam has a density of 400 kg / m 3 and a thickness of 110 mm, and is prepared by pouring a polyurethane foaming compound and polymeric diphenylmethane diisocyanate on a glass fiber continuous mat after blending, and the mass ratio of the polyurethane foaming compound, the polymeric diphenylmethane diisocyanate and the glass fiber continuous mat is 8:8:1.

[0120] The ordinary aluminum plate has a thickness of 1 mm.

[0121] The low-density reinforced polyurethane foam has a density of 100 kg / m 3 and a thickness of 300 mm, and is prepared by pouring a polyurethane foaming compound and polymeric diphenylmethane diisocyanate on a glass fiber continuous mat after blending, and the mass ratio of the polyurethane foaming compound, the polymeric diphenylmethane diisocyanate and the glass fiber continuous mat is 8:10:1.

[0122] The preparation method of the super-low-temperature liquefied gas storage and transportation cold insulation module, specifically includes the following steps:

[0123] (1) Preparation of the upper structure of the cold insulation module

[0124] The polyurethane foaming compound and polymeric diphenylmethane diisocyanate are first mixed in a normal-pressure high-speed mixing head at a speed of 2500 r / min and a temperature of 30 DEG C, and the output is 70 kg / min; then, the mixture is poured on a flattened glass fiber continuous mat and enters a conveying chain plate for free foaming, the temperature of the conveying chain plate is 35 DEG C, and the advancing speed is 2 m / min; after natural curing for 100 days, a high-density reinforced polyurethane foam is obtained, which is cut into layers and combined with a stainless steel corrugated plate by using a polyurethane fast curing adhesive in a press, the temperature of the press is 30 DEG C, the pressure is 1.7 bar, and the time is 25 min, thereby obtaining a cold storage module upper structure; wherein, the polyurethane fast curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine at a mass ratio of 5:5:0.1;

[0125] (2) Preparation of a cold storage module lower structure

[0126] The polyurethane foaming compound and polymeric diphenylmethane diisocyanate are first mixed in a high-pressure mixing head at a pressure of 220 bar and a temperature of 30 DEG C, and the output is 50 kg / min; then, the mixture is poured on a flattened glass fiber continuous mat and enters a confined space composed of high-strength chain plates on the top, bottom, left and right sides for foaming, the thickness of the high-strength chain plates is 10 mm, the flatness is ±0.5 mm, the temperature is 25 DEG C, and the advancing speed is 1.3 m / min; during the foaming process, kraft paper with an apparent density of 160 g / m 2 is used to isolate the low-density reinforced polyurethane foam from the lower and left and right chain plates, and a common aluminum plate is introduced at the top to directly bond and composite with the low-density reinforced polyurethane foam, and after curing for 90 days, the cold storage module lower structure is obtained by cutting;

[0127] (3) Composite of the cold storage module upper structure and the cold storage module lower structure

[0128] The cold storage module upper structure and the cold storage module lower structure are combined by using a polyurethane fast curing adhesive in a press, the temperature of the press is 25 DEG C, the pressure is 1.3 bar, and the time is 30 min, thereby obtaining a cold storage module for ultra-low temperature liquefied gas storage and transportation; wherein, the polyurethane fast curing adhesive is prepared by mixing polyester polyol, diphenylmethane diisocyanate and dimethylcyclohexylamine at a mass ratio of 5:5:0.1.

[0129] Performance test

[0130] The cold insulation modules prepared from Examples 1-4 and Comparative Examples 1-2 were used for storing and transporting ultra-low temperature liquefied gas, and the impact strength of each was tested according to GB / T 1043.1-2008, the tensile strength was tested at 20°C according to BS ISO 1926-2005, and the edge and corner loss rate was calculated. The edge and corner loss rate was calculated as net material volume / blank material volume x 100%.

[0131] The test results are shown in Table 1.

[0132] Table 1 Performance test results of the cold insulation modules of Examples 1-4 and Comparative Examples 1-2 for storing and transporting ultra-low temperature liquefied gas

[0133]

[0134] As shown in Table 1, compared with Comparative Example 1-2, the impact strength and tensile strength of the cold insulation modules of Examples 1-4 were significantly increased, and the edge and corner loss rate was significantly decreased.

[0135] The above tests show that the cold insulation module for storing and transporting ultra-low temperature liquefied gas has excellent impact strength and tensile strength, can effectively prevent low-temperature damage to the storage container shell caused by leakage of ultra-low temperature liquefied gas, and ensures the safety of storing and transporting ultra-low temperature liquefied gas.

[0136] The above description of disclosed examples enables one of ordinary skill in the art to make or use the application. Various modifications to these examples will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other examples without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the examples shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ultra-low temperature liquefied gas storage and transport use cold insulation module, characterized by, The stainless steel corrugated plate, the high-density reinforced polyurethane foam, the glass fiber aluminum foil composite material and the low-density reinforced polyurethane foam are sequentially combined from top to bottom. The stainless steel corrugated plate has a thickness of 0.5-2.5 mm, and contains, by mass percentage, 9-12% of nickel, 17-20% of chromium, 0.1-2% of manganese, 0.1-1% of copper, 0.1-1% of silicon, 0.01-0.04% of phosphorus and 0.01-0.02% of sulfur. The glass fiber aluminum foil composite material has a thickness of 0.2-1.2 mm, and is prepared by hot-pressing a glass fiber cloth and an aluminum foil through a polyurethane adhesive, with a mass ratio of the glass fiber cloth, the aluminum foil and the polyurethane adhesive being (50-100):(10-30):1; wherein the polyurethane adhesive is prepared by mixing a polyether polyol and a diphenyl methane diisocyanate at a mass ratio of (1-10):

1.

2. The cold module of claim 1, wherein, The high-density reinforced polyurethane foam has a density of 200-500 kg / m 3 and a thickness of 50-250 mm. The high-density reinforced polyurethane foam is prepared by pouring a polyurethane foaming combination material and a polymeric diphenyl methane diisocyanate on a glass fiber continuous felt after blending, with a mass ratio of the polyurethane foaming combination material, the polymeric diphenyl methane diisocyanate and the glass fiber continuous felt being (5-10):(5-10):1; wherein the polyurethane foaming combination material is prepared by mixing a polymer polyol with a hydroxyl value of 300-500 mg KOH / g, a phosphate ester flame retardant, a polysiloxane surfactant, an amine catalyst, water and pentafluoropropane at a mass ratio of (105-155):(5-15):(0.5-3):(0.1-1):(0.1-1):

1.

3. The cold module of claim 1, wherein, The low density enhanced polyurethane foam has a density of 70 to 150 kg / m 3 and a thickness of 150 to 350 mm. The low-density reinforced polyurethane foam is prepared by pouring a polyurethane foaming combination material and a polymeric diphenyl methane diisocyanate on a glass fiber continuous felt after blending, with a mass ratio of the polyurethane foaming combination material, the polymeric diphenyl methane diisocyanate and the glass fiber continuous felt being (10-20):(10-20):1; wherein the polyurethane foaming combination material is prepared by mixing a polymer polyol with a hydroxyl value of 300-500 mg KOH / g, a phosphate ester flame retardant, a polysiloxane surfactant, an amine catalyst, water and pentafluoropropane at a mass ratio of (105-155):(5-15):(0.5-3):(0.1-1):(0.1-1):

1.

4. A method of manufacturing a cold module for the storage and transport of ultra- low temperature liquefied gas according to claim 1, characterized in that, Specifically comprising the following steps: (1) Preparation of the upper structure of the cold storage module The polyurethane foaming combination material and the polymeric diphenyl methane diisocyanate are mixed, then poured on the glass fiber continuous felt, and then foamed freely in the conveying chain plate to obtain the high-density reinforced polyurethane foam after natural curing; after layer cutting, the high-density reinforced polyurethane foam is pressure-bonded with the stainless steel corrugated plate through the polyurethane rapid curing adhesive to obtain the upper structure of the cold storage module; The polyurethane rapid curing adhesive is prepared by mixing a polyester polyol, a diphenyl methane diisocyanate and a dimethylcyclohexylamine at a mass ratio of (1-10):(1-10):0.

1. (2) Preparation of the lower structure of the cold insulation module Glass fiber cloth and aluminum foil are hot-pressed and compounded by polyurethane adhesive to obtain a glass fiber aluminum foil composite material, which is ready for use; First, the polyurethane foaming compound is mixed with polymeric diphenylmethane diisocyanate, then poured on the glass fiber continuous felt, and foamed in a restricted space composed of high-strength chain plates on the top, bottom, left and right sides. During the foaming process, kraft paper is used to isolate the low-density reinforced polyurethane foam from the lower and left and right sides of the chain plates, and glass fiber aluminum foil composite material is introduced at the top to directly bond and composite with the low-density reinforced polyurethane foam. After natural curing, it is cut to obtain the lower structure of the cold insulation module. (3) Composite of the upper structure of the cold insulation module and the lower structure of the cold insulation module The upper structure of the cold insulation module and the lower structure of the cold insulation module are pressed together by polyurethane rapid curing adhesive to obtain the cold insulation module for ultra-low temperature liquefied gas storage and transportation.

5. A method of producing a cold module for the storage and transport of ultra- low temperature liquefied gas according to claim 4, characterized in that, In step (1), the mixing device is a normal pressure high-speed mixing head with a speed of 1000-3000 r / min, a temperature of 10-40℃, and a discharge rate of 50-100 kg / min; the temperature of the conveying chain plate is 15-45℃, and the forward speed is 1-2 m / min; the natural curing time is 60-120 days; the pressing device is a press with a temperature of 15-45℃, a pressure of 0.5-2.0 bar, and a time of 10-30 min.

6. A method of manufacturing a cold module for the storage and transport of ultra- low temperature liquefied gas according to claim 4, characterized in that, In step (2), the hot-pressing compound device is a hot-pressing oil press, the temperature is 100-200℃, the pressure is 1-5 bar, and the time is 5-15 min; the mixing device is a high-pressure mixing head, the pressure is 50-300 bar, the temperature is 15-35℃, and the discharge capacity is 20-120 kg / min; the high-strength chain plate has a thickness of 5-25 mm, a flatness of ±0.5-1 mm, a temperature of 15-45℃, and an advancing speed of 0.5-2.5 m / min; the kraft paper has an apparent density of 90-250 g / m 2 ; and the natural curing time is 60-120 days.

7. A method of producing a cold module for the storage and transport of ultra- low temperature liquefied gas as claimed in claim 4, characterized in that, In step (3), the pressing device is a press with a temperature of 15-45℃, a pressure of 0.5-2.0 bar, and a time of 10-30 min.

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