Foaming material, preparation method thereof and refrigeration equipment
By adding zinc-based metal-organic framework materials to foamed materials, the polymer decomposition and carbonization are catalyzed to form a stable carbon layer, which solves the flammability problem of rigid polyurethane foam materials and achieves improved high-efficiency flame retardant and heat insulation performance.
Patent Information
- Application Number
- CN202511309483.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-12
- Publication Date
- 2025-12-09
AI Technical Summary
Existing rigid polyurethane foam materials are flammable, producing large amounts of smoke and harmful gases when burning, posing safety hazards, and it is difficult to improve flame retardant properties while maintaining good thermal insulation performance.
Zinc-based metal-organic framework materials are used as flame retardants. Through catalytic polymer decomposition and carbonization, a stable char layer is formed, which isolates oxygen and heat, adsorbs smoke and toxic gases, and releases non-combustible gases to dilute the concentration of combustible gases, thereby improving flame retardant performance.
It significantly improves the flame retardant properties of foamed materials, reduces the generation of combustible gases, inhibits combustion, forms a char layer to adsorb smoke and toxic gases, and maintains good thermal insulation performance and mechanical strength.
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Figure CN121086508A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of foaming materials, in particular to a foaming material, a preparation method thereof and a refrigeration equipment. BACKGROUND
[0002] Rigid polyurethane foam has become a widely used thermal insulation material in many fields such as household appliances, buildings, ships, chemical industry, transportation, etc. due to its excellent comprehensive performance, especially its low thermal conductivity. However, polyurethane rigid foam is flammable and produces a large amount of smoke and harmful gases after burning, which has great safety hazards in use. Therefore, it is very important to improve the flame retardant performance of polyurethane rigid foam while maintaining its good thermal insulation performance. SUMMARY
[0003] Based on this, the present application provides a foaming material, a preparation method thereof and a refrigeration equipment.
[0004] In a first aspect, the present application provides a foaming material, which comprises, by weight parts, 75-95 parts of polyether polyol, 1-3 parts of water, 3-5 parts of catalyst, 13-19 parts of foaming agent, 0.5-2.5 parts of zinc-based metal organic framework material and 130-150 parts of isocyanate.
[0005] In some embodiments, the structural formula of the zinc-based metal organic framework material is Zn(L)·2MeOH·H2O, wherein L is an 8-hydroxyquinoline organic ligand.
[0006] In some embodiments, the 8-hydroxyquinoline organic ligand comprises at least one of 4,4'-(8-hydroxy-2-methylquinoline-5,7-diyl) dibenzoic acid, 5-carboxy-8-hydroxyquinoline and 7-carboxy-2-methyl-8-hydroxyquinoline.
[0007] In some embodiments, the polyether polyol comprises polyether polyol A and polyether polyol B, and the mass ratio of the polyether polyol A to the polyether polyol B is (50-60):(25-30); the viscosity of the polyether polyol A is 9500 mPa.s-11500 mPa.s, and the hydroxyl value is 400 mgKOH / g-440 mgKOH / g; the viscosity of the polyether polyol B is 3500 mPa.s-5500 mPa.s, and the hydroxyl value is 380 mgKOH / g-420 mgKOH / g; and / or,
[0008] The isocyanate comprises at least one of polymethylene polyphenyl isocyanate, toluene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate and xylylene diisocyanate.
[0009] In some embodiments, the catalyst comprises at least one of a foaming catalyst, a gelation catalyst, and a trimerization catalyst; and / or,
[0010] The foaming agent comprises an alkane foaming agent.
[0011] In some embodiments, the catalyst comprises a foaming catalyst, a gelation catalyst, and a trimerization catalyst, wherein the mass ratio of the foaming catalyst, the gelation catalyst, and the trimerization catalyst is 1:(3.0-3.2):(1.0-1.2); and / or,
[0012] The alkane foaming agent comprises at least one of cyclopentane, isopentane, n-butane, isobutane, and propane.
[0013] In some embodiments, the foaming material further comprises 3-4 parts of a surfactant by weight, the surfactant comprising at least one of silicone oil AK88310, silicone oil B8496, silicone oil UR5981, and silicone oil UR-5961.
[0014] In a second aspect, the embodiments of the present application provide a preparation method of a foaming material, comprising:
[0015] Providing an A component and a B component, the A component comprising, by weight, 75-95 parts of a polyether polyol, 1-3 parts of water, 3-5 parts of a catalyst, 13-19 parts of a foaming agent, and 0.5-2.5 parts of a zinc-based metal organic framework material, and the B component comprising 130-150 parts of isocyanate;
[0016] Mixing the A component and the B component to obtain a mixed material, and performing polymerization foaming on the mixed material to obtain the foaming material.
[0017] In a third aspect, the embodiments of the present application provide a refrigeration equipment, comprising an insulation layer, the insulation layer comprising the foaming material described above or the foaming material prepared by the preparation method described above.
[0018] In some embodiments, the refrigeration equipment comprises a cabinet, the cabinet comprising a shell and a cabinet liner, the cabinet liner being arranged on the inner side of the shell, and the insulation layer being arranged between the shell and the cabinet liner; and / or,
[0019] The refrigeration equipment comprises a door body, the door body comprising a door body panel and a door liner arranged in a spaced manner, and the insulation layer being arranged between the door body panel and the door liner.
[0020] The foaming material provided by the embodiments of the present application uses a zinc-based metal organic framework material as a flame retardant, which can greatly improve the flame retardant performance of the foaming material. Specifically, the flame retardant mechanism of the zinc-based metal organic framework material includes: in the combustion process, the zinc ions in the zinc-based metal organic framework material act as Lewis acids, which can catalyze the decomposition and carbonization of the polymer, the zinc ions reduce the decomposition temperature of the polymer at high temperature, promote the formation of a stable carbon layer, reduce the generation of flammable gas, the formed carbon layer can also effectively isolate the material from contact with oxygen and heat, thereby inhibiting further combustion, the formed carbon layer can also absorb and capture smoke and toxic gases, and will not release corrosive or toxic gases at high temperature. Moreover, the zinc-based metal organic framework material can release non-combustible gases (such as water vapor and CO2) at high temperature, dilute the concentration of flammable gases in the combustion zone, and reduce the flame temperature, thereby inhibiting further combustion. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced.
[0022] Figure 1 The flow chart of the preparation method of the foaming material provided by the embodiments of the present application. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0024] In the present application, the association relationship of the associated objects is described by "and / or", which means that there can be three kinds of relationships, for example, A and / or B, which means that there can be A alone, A and B together, and B alone. Wherein A and B can be singular or plural.
[0025] In the present application, "at least one" means one or more, and "multiple" means two or more. "At least one", "at least one of the following" or the like means any combination of these items, including any combination of single item (s) or multiple items (s). For example, "at least one of a, b or c", or "at least one of a, b and c", can mean a, b, c, a+b, a+c, b+c, or a+b+c, wherein a, b, and c can be single or multiple.
[0026] "Parts by weight" refers to a basic unit of measurement indicating the proportional relationship of the mass of multiple components, 1 part can represent any unit mass, such as 1g, 1Kg, or 2g, 2Kg, etc. If we say that the weight of component A is a parts, and the weight of component B is b parts, it means that the mass ratio of component A to component B is a:b. Alternatively, it means that the mass of component A is aK, and the mass of component B is bK (K is an arbitrary number, indicating a multiple factor). It should not be misunderstood that unlike the parts by weight, the sum of the parts by weight of all components is not limited to 100 parts.
[0027] Various embodiments of the present application can exist in the form of a range; it should be understood that the description in the form of a range is only for the convenience and brevity, and should not be understood as a hard limit on the scope of the present application; therefore, it should be considered that the described range has disclosed all possible sub-ranges and single values within the range. For example, it should be considered that the range from 1 to 6 has disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5, and 6. In addition, whenever a numerical range is indicated in this document, it refers to any cited number (fraction or integer) within the indicated range.
[0028] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.
[0029] The embodiment of the present application provides a foaming material, which comprises, in parts by weight, polyether polyol 75-95 parts, water 1-3 parts, catalyst 3-5 parts, foaming agent 13-19 parts, zinc-based metal organic framework material 0.5-2.5 parts, and isocyanate 130-150 parts.
[0030] Exemplarily, in the foaming material, the polyether polyol can be 75 parts, 80 parts, 85 parts, 95 parts, etc., the water can be 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, etc., the catalyst can be 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, etc., the foaming agent can be 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, etc., the zinc-based metal organic framework material can be 0.5, 1 part, 1.5 parts, 2 parts, 2.5 parts, and the isocyanate can be 130 parts, 135 parts, 140 parts, 145 parts, 150 parts, etc.
[0031] The foaming material provided by the embodiments of the present application uses a zinc-based metal organic framework material as a flame retardant, which can greatly improve the flame retardant performance of the foaming material. Specifically, the flame retardant mechanism of the zinc-based metal organic framework material includes: in the combustion process, the zinc ions in the zinc-based metal organic framework material act as Lewis acids, which can catalyze the decomposition and carbonization of the polymer, the zinc ions reduce the decomposition temperature of the polymer at high temperature, promote the formation of a stable carbon layer, reduce the generation of flammable gas, the formed carbon layer can also effectively isolate the material from contact with oxygen and heat, thereby inhibiting further combustion, the formed carbon layer can also absorb and capture smoke and toxic gas, and will not release corrosive or toxic gas at high temperature. Moreover, the zinc-based metal organic framework material can release non-combustible gas (such as water vapor and CO2) at high temperature, dilute the concentration of flammable gas in the combustion zone, and reduce the flame temperature, thereby inhibiting further combustion.
[0032] Exemplarily, the structural formula of the zinc-based metal organic framework material is Zn(L)·2MeOH·H2O, wherein L is an 8-hydroxyquinoline organic ligand. As can be seen, in the structural formula, the molar ratio of Zn to L is 1:1, and MeOH is methanol.
[0033] Exemplarily, the 8-hydroxyquinoline organic ligand includes at least one of 4,4'-(8-hydroxy-2-methylquinoline-5,7-diyl) dibenzoic acid, 5-carboxy-8-hydroxyquinoline (5-COOH-HQ), and 7-carboxy-2-methyl-8-hydroxyquinoline (7-COOH-2-MeHQ).
[0034] The structural formula of 4,4'-(8-hydroxy-2-methylquinoline-5,7-diyl) dibenzoic acid is
[0035]
[0036] In some embodiments, the preparation method of the zinc-based metal organic framework material comprises: dissolving a mixture of 8-hydroxyquinoline organic ligand (L) and ZnCl2 in a mixed solution of methanol and tetrahydrofuran, heating at 100℃ for 24 hours, collecting yellow block crystals, washing with methanol and drying in air to obtain a zinc-based metal organic framework material (referred to as Zn-MOF) with a structural formula of Zn(L)·2MeOH·H2O, wherein the molar ratio of 8-hydroxyquinoline organic ligand (L) to ZnCl2 is 1:2, and the volume ratio of methanol to tetrahydrofuran is 1:2.
[0037] Exemplarily, the polyether polyol comprises polyether polyol A and polyether polyol B, and the mass ratio of the polyether polyol A to the polyether polyol B is (50-60):(25-30), for example, 50:30, 55:28, 60:25, etc.
[0038] Exemplarily, the viscosity of the polyether polyol A is 9500 mPa.s-11500 mPa.s (for example, 9500 mPa.s, 10000 mPa.s, 10500 mPa.s, 11000 mPa.s, 11500 mPa.s, etc.), and the hydroxyl value is 400 mgKOH / g-440 mgKOH / g (for example, 400 mgKOH / g, 410 mgKOH / g, 420 mgKOH / g, 430 mgKOH / g, 440 mgKOH / g, etc.).
[0039] Exemplarily, the viscosity of the polyether polyol B is 3500 mPa.s-5500 mPa.s (for example, 3500 mPa.s, 4000 mPa.s, 4500 mPa.s, 5000 mPa.s, 5500 mPa.s, etc.), and the hydroxyl value is 380 mgKOH / g-420 mgKOH / g (for example, 380 mgKOH / g, 390 mgKOH / g, 400 mgKOH / g, 410 mgKOH / g, 420 mgKOH / g, etc.).
[0040] Exemplarily, the hydroxyl values of the ether polyol A and the polyether polyol B are measured by the phthalic anhydride method at 25℃.
[0041] It should be noted that by mixing the high-viscosity polyether polyol A and the low-viscosity polyether polyol B, the viscosity of the system can be brought to a moderate range, which can ensure the stability of the bubbles during foaming and meet the requirements of flowability during processing, thereby improving the production efficiency and product quality; by mixing the polyether polyol A and the polyether polyol B with different hydroxyl values, the crosslinking degree and mechanical properties of the final polyurethane foam can be accurately controlled, so that the foam can achieve a balance in hardness, elasticity, etc.
[0042] Exemplarily, the catalysts include at least one of a blowing catalyst, a gelation catalyst, and a trimerization catalyst.
[0043] Exemplarily, the blowing catalyst includes pentamethyldiethylenetriamine (PC-5), which is purchased from Wanheng.
[0044] Exemplarily, the gelation catalyst includes at least one of BX6212 and BX6211B, both of which are purchased from Jihaohua Chemical.
[0045] Exemplarily, the trimerization catalyst includes 2-hydroxy-N,N,N-trimethyl-1-propanaminium carbonate (TMR-2), which is purchased from Xindian Chemical.
[0046] In some embodiments, the catalysts include a blowing catalyst, a gelation catalyst, and a trimerization catalyst, and a mass ratio of the blowing catalyst, the gelation catalyst, and the trimerization catalyst is 1:(3.0-3.2):(1.0-1.2), for example, 1:3.0:1.0, 1:3.1:1.1, 1:3.2:1.2, 1:3.0:1.2, 1:3.2:1.0, or the like.
[0047] It should be noted that the main role of the blowing catalyst is to accelerate the reaction of isocyanate and water to generate carbon dioxide gas, thereby producing a cell structure, and it can also promote the reaction of isocyanate and polyol to some extent, but the role is relatively weak. The gelation catalyst focuses on catalyzing the reaction between isocyanate and polyol, promoting the growth and crosslinking of polyurethane molecular chains, and forming a polymer network structure with certain strength and hardness, that is, promoting the gelation process. The trimerization catalyst can catalyze the trimerization reaction of isocyanate to generate an isocyanurate ring structure, which can improve the thermal stability, hardness, and flame retardance of the polyurethane foam. By setting the mass ratio of the blowing catalyst and the gelation catalyst to 1:(3.0-3.2), the embodiments of the present application can make the blowing reaction and the gelation reaction relatively synchronous, simultaneously generating gas and building a polymer network, thereby ensuring the stability of the cell structure of the foam and having appropriate density and elasticity; by setting the mass ratio of the blowing catalyst and the trimerization catalyst to 1:(1.0-1.2), the trimerization reaction degree is moderate on the premise of ensuring the normal progress of the blowing reaction, thereby endowing the foam with good thermal stability and flame retardance, while not affecting its flexibility and other properties.
[0048] Exemplarily, the blowing agent includes an alkane blowing agent. In some embodiments, the alkane blowing agent includes at least one of cyclopentane, isopentane, n-butane, isobutane, and propane.
[0049] Exemplarily, the isocyanate comprises at least one of poly-methylene polyphenyl isocyanate (PAPI), toluene diisocyanate (TDI), diphenyl methane diisocyanate (MDI), hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI), dicyclohexyl methane diisocyanate (HMDI), xylylene diisocyanate (XDI).
[0050] Exemplarily, the foaming material further comprises 3-4 parts of surfactant by weight, for example, 3.2 parts, 3.5 parts, 3.8 parts, 4 parts, etc.
[0051] Exemplarily, the surfactant comprises at least one of silicone oil AK88310, silicone oil B8496, silicone oil UR5981, silicone oil UR-5961. Among them, silicone oil AK88310 and silicone oil B8496 are purchased from Yinchuang, and silicone oil UR5981 and silicone oil UR-5961 are purchased from Ausgia.
[0052] Please refer to Figure 1 The embodiment of the present application also provides a preparation method of the foaming material, which is used for preparing the foaming material in any of the above embodiments, and the preparation method comprises the following steps:
[0053] S100, providing an A component and a B component, wherein the A component comprises 75-95 parts of polyether polyol, 1-3 parts of water, 3-5 parts of catalyst, 13-19 parts of foaming agent, and 0.5-2.5 parts of zinc-based metal organic framework material by weight, and the B component comprises 130-150 parts of isocyanate.
[0054] Exemplarily, the A component can further comprise 3-4 parts of surfactant by weight.
[0055] S200, mixing the A component and the B component to obtain a mixed material, and performing polymerization foaming on the mixed material to obtain the foaming material.
[0056] The embodiment of the present application also provides a refrigeration equipment, which comprises an insulation layer, and the insulation layer comprises the foaming material or the foaming material prepared by the preparation method.
[0057] Exemplarily, the refrigeration equipment comprises a cabinet, and the cabinet comprises a shell and a cabinet liner, the cabinet liner is arranged on the inner side of the shell, and the insulation layer is arranged between the shell and the cabinet liner.
[0058] Exemplarily, the refrigeration equipment comprises a door body, and the door body comprises a door panel and a door liner which are arranged in a spaced manner, and the insulation layer is arranged between the door panel and the door liner.
[0059] Exemplarily, the refrigeration equipment can be a refrigerator, a freezer, a cold drink machine, a refrigeration wine cabinet, a freezer, an ice cabinet, an ice cream machine, an ice maker, etc.
[0060] The foamed material and the preparation method thereof are described in detail below in the form of specific examples.
[0061] Example 1
[0062] A foamed material, the preparation method thereof comprises:
[0063] Step 1, providing A component and B component, the A component comprises, by weight parts, polyether polyol 80 parts, water 2 parts, catalyst 4 parts, foaming agent 16 parts, surfactant 3.5 parts and zinc-based metal organic framework material 2.5 parts, and the B component comprises polymethylene polyphenyl isocyanate 140 parts;
[0064] In the A component, the polyether polyol comprises polyether polyol A and polyether polyol B with a mass ratio of 55:28, the viscosity of the polyether polyol A is 10500 mPa.s, and the hydroxyl value is 420 mgKOH / g; the viscosity of the polyether polyol B is 4500 mPa.s, and the hydroxyl value is 400 mgKOH / g; the catalyst comprises pentamethyldiethylene triamine, BX6212 and 2-hydroxy-N,N,N-trimethyl-1-propanamine formate with a mass ratio of 1:3.1:1.1; the surfactant is silicone oil AK88310; and the structural formula of the zinc-based metal organic framework material is Zn(L)·2MeOH·H2O, wherein L is 4,4'-(8-hydroxy-2-methylquinoline-5,7-diyl) dibenzoic acid.
[0065] Step 2, mixing the A component and the B component to obtain a mixed material, injecting the mixed material into a refrigerator foaming box body to polymerize and foam, and obtaining a foamed material, wherein the temperature of the A component and the B component is controlled to be 18℃, the temperature of the mold core and the clamp is 48℃, the temperature of the bottom plate is 40℃, and the injection pressure of the mixed material is 135 bar.
[0066] Example 2
[0067] A foamed material, the preparation method thereof is different from that of example 1 in that:
[0068] In the structural formula of the zinc-based metal organic framework material, L is 5-carboxy-8-hydroxyquinoline (5-COOH-HQ).
[0069] Example 3
[0070] A foamed material, the preparation method thereof is different from that of example 1 in that:
[0071] In the structural formula of the zinc-based metal organic framework material, L is 7-carboxyl-2-methyl-8-hydroxyquinoline (7-COOH-2-MeHQ).
[0072] Example 4
[0073] A foamed material, the preparation method of which is compared with that of Example 1, and the difference lies in that:
[0074] The A component includes, in parts by weight, polyether polyol 75 parts, water 1 part, catalyst 3 parts, foaming agent 13 parts, surfactant 3 parts, and zinc-based metal organic framework material 0.5 part.
[0075] Example 5
[0076] A foamed material, the preparation method of which is compared with that of Example 1, and the difference lies in that:
[0077] The A component includes, in parts by weight, polyether polyol 95 parts, water 3 parts, catalyst 5 parts, foaming agent 19 parts, surfactant 4 parts, and zinc-based metal organic framework material 1.5 part.
[0078] Example 6
[0079] A foamed material, the preparation method of which is compared with that of Example 1, and the difference lies in that:
[0080] In the A component, the polyether polyol includes polyether polyol A and polyether polyol B with a mass ratio of 50:30.
[0081] Example 7
[0082] A foamed material, the preparation method of which is compared with that of Example 1, and the difference lies in that:
[0083] In the A component, the polyether polyol includes polyether polyol A and polyether polyol B with a mass ratio of 60:25.
[0084] Comparative Example 1
[0085] A foamed material, the preparation method of which is compared with that of Example 1, and the difference lies in that:
[0086] The A component includes, in parts by weight, polyether polyol 80 parts, water 2 parts, catalyst 4 parts, foaming agent 16 parts, surfactant 3.5 parts.
[0087] It can be seen that the difference between Comparative Example 1 and Example 1 lies in that no zinc-based metal organic framework material is added.
[0088] Performance test:
[0089] The foamed materials of Examples 1-7 and Comparative Example 1 of the present application are tested, and the testing method is as follows:
[0090] (1) Thermal conductivity (mW / m·K): measured according to GB / T 10295-2008.
[0091] (2) Compression strength (kPa): measured according to GB / T 8813-2020.
[0092] (3) Pressure tank shrinkage: first, the initial volume of the foam is tested by the drainage method, the foam is placed in a sealed container, the pressure is gradually increased to 1 bar, and the duration is 30 min, then the volume of the foam is tested again by the drainage method, and the change rate of the volume measured before and after is compared, the greater the change rate, the lower the strength of the foam and the greater the deformation.
[0093] (4) Limiting oxygen index LOI: measured according to GB 2406.2-2009.
[0094] The test results are shown in Table 1.
[0095] Table 1
[0096]
[0097] From Table 1, it can be seen that:
[0098] The limiting oxygen index LOI of the foamed materials of Examples 1-7 is greater than that of the foamed material of Comparative Example 1, which indicates that the foamed materials of Examples 1-7 have stronger flame retardant performance; it is known that the difference between Examples 1-7 and Comparative Example 1 is that the foamed materials of Examples 1-7 all add zinc-based metal organic framework materials, while the foamed material of Comparative Example 1 does not add, which indicates that: by adding zinc-based metal organic framework materials in the foamed material, the flame retardant performance of the foamed material can be significantly improved.
[0099] The thermal conductivity of the foamed materials of Examples 1-7 is comparable to that of the foamed material of Comparative Example 1, which indicates that the addition of 0.5-2.5 parts of zinc-based metal organic framework material in the foamed material of the present application does not affect the heat preservation performance of the foamed material.
[0100] The compression strength of the foamed materials of Examples 1-7 is greater than that of the foamed material of Comparative Example 1, which indicates that the foamed materials of Examples 1-7 have higher mechanical strength.
[0101] The pressure tank shrinkage of the foamed materials of Examples 1-7 is less than that of the foamed material of Comparative Example 1, which indicates that the foamed materials of Examples 1-7 have better dimensional stability.
[0102] The foamed material, the preparation method thereof and the refrigeration equipment provided by the embodiments of the present application are described in detail above. The principles and implementation manners of the present application are described by applying specific examples, and the above description of the embodiments is only used to help understand the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manners and application ranges can be changed, and the above description of the present application should not be understood as a limitation.
Claims
1. A foaming material, characterized in that, The foaming material comprises, by weight, 75-95 parts of polyether polyol, 1-3 parts of water, 3-5 parts of catalyst, 13-19 parts of foaming agent, 0.5-2.5 parts of zinc-based metal-organic framework material, and 130-150 parts of isocyanate.
2. The foamed material according to claim 1, characterized in that, The zinc-based metal-organic framework material has the structural formula Zn(L)·2MeOH·H2O, where L is an 8-hydroxyquinoline organic ligand.
3. The foamed material according to claim 2, characterized in that, The 8-hydroxyquinoline organic ligand includes at least one of 4,4'-(8-hydroxy-2-methylquinoline-5,7-diyl)dibenzoic acid, 5-carboxy-8-hydroxyquinoline, and 7-carboxy-2-methyl-8-hydroxyquinoline.
4. The foamed material according to claim 1, characterized in that, The polyether polyol comprises polyether polyol A and polyether polyol B, wherein the mass ratio of polyether polyol A to polyether polyol B is (50-60):(25-30); the viscosity of polyether polyol A is 9500 mPa·s to 11500 mPa·s, and the hydroxyl value is 400 mg KOH / g to 440 mg KOH / g; the viscosity of polyether polyol B is 3500 mPa·s to 5500 mPa·s, and the hydroxyl value is 380 mg KOH / g to 420 mg KOH / g; and / or, The isocyanate includes at least one of polymethylene polyphenyl isocyanate, toluene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate, and phenyldimethyl diisocyanate.
5. The foamed material according to claim 1, characterized in that, The catalyst includes at least one of a foaming catalyst, a gel catalyst, and a trimerizing catalyst; and / or, The foaming agent includes alkane-based foaming agents.
6. The foamed material according to claim 5, characterized in that, The catalyst includes a foaming catalyst, a gel catalyst, and a trimerizing catalyst, wherein the mass ratio of the foaming catalyst, the gel catalyst, and the trimerizing catalyst is 1:(3.0-3.2):(1.0-1.2); and / or, The alkane-based foaming agent includes at least one of cyclopentane, isopentane, n-butane, isobutane, and propane.
7. The foamed material according to any one of claims 1-6, characterized in that, The foaming material further includes 3 to 4 parts of surfactant by weight, wherein the surfactant includes at least one of silicone oil AK88310, silicone oil B8496, silicone oil UR5981, and silicone oil UR-5961.
8. A method for preparing a foamed material, characterized in that, include: The product is provided as component A and component B. By weight, component A comprises 75-95 parts of polyether polyol, 1-3 parts of water, 3-5 parts of catalyst, 13-19 parts of foaming agent and 0.5-2.5 parts of zinc-based metal-organic framework material, and component B comprises 130-150 parts of isocyanate. Component A and component B are mixed to obtain a mixture, which is then polymerized and foamed to obtain a foamed material.
9. A refrigeration device, characterized in that, It includes a thermal insulation layer, wherein the thermal insulation layer comprises the foaming material according to any one of claims 1-7 or the foaming material prepared by the method of the foaming material according to claim 8.
10. The refrigeration equipment according to claim 9, characterized in that, The refrigeration equipment includes a housing, which comprises a shell and a liner, the liner being disposed inside the shell, and an insulation layer being provided between the shell and the liner; and / or, The refrigeration equipment includes a door body, which includes a door panel and a door liner spaced apart, and the insulation layer is provided between the door panel and the door liner.