Barrier explosion suppression material with mildew resistance as well as preparation method and application of barrier explosion suppression material

Abstract

The invention relates to the technical field of barrier explosion suppression materials, in particular to a barrier explosion suppression material with mildew resistance and a preparation method and application thereof. The invention discloses a barrier explosion suppression material with mildew resistance. The barrier explosion suppression material is prepared from the following raw materials in parts by weight: 50-80 parts of polytetramethylene ether glycol, 10-20 parts of polybutylene adipate glycol, 0.1-0.2 part of a catalyst, 1-2 parts of isocyanate, 4-5 parts of a foaming agent, 4-5 parts of an anti-mildew agent, 5-8 parts of a chain extender and 2-4 parts of a stabilizer. According to the barrier and explosion suppression material, the antifungal agent and the polyhydric alcohol component are used in a composite mode, the lasting antifungal performance of the barrier and explosion suppression material is achieved, the prepared barrier and explosion suppression material also has the explosion suppression performance and the fuel oil compatibility, and the problem that an existing barrier and explosion suppression material is prone to mold breeding in a humid or warm environment is solved.

Description

Technical Field

[0001] The invention relates to the technical field of barrier explosion suppression materials, and in particular to a barrier explosion suppression material with antifungal properties and a preparation method and application thereof. Background Art

[0002] With the continuous development of modern industrial technology, barrier explosion suppression materials are increasingly widely used in the fields of aviation, navigation and ground transportation. Especially in the fuel tank system, barrier explosion suppression materials can effectively limit the sloshing of oil, reduce the scouring and friction of oil on the tank body, thereby reducing the charge accumulation of the tank body, and through its complex three-dimensional structure, it can break the flame front and consume the free radicals of the combustion reaction, thereby significantly reducing the risk caused by static discharge or accidental explosion.

[0003] At present, polyurethane barrier explosion suppression materials have become the first choice for fuel tank filling materials due to their low density, small space occupation, easy processing and good explosion suppression effect. This material can not only be cut into various shapes to meet the needs of different fuel tanks, but also respond quickly when an explosion occurs, and achieve the function of barrier explosion suppression through its unique physical and chemical properties.

[0004] However, despite the excellent performance of polyurethane barrier explosion suppression materials, there are still some technical challenges in the actual application process. Among them, the problem of mold growth is particularly prominent. In a humid or warm environment, mold is easy to grow on the surface or inside of polyurethane materials, which not only affects the appearance and performance of the material, but also may cause potential pollution and damage to the fuel tank system.

[0005] In order to solve the problem of mold growth, the current technical route mainly focuses on adding antifungal agents. However, existing antifungal agents often have the following defects: first, the antifungal effect is limited and cannot effectively inhibit the growth of mold in the long term; second, the antifungal agent is not compatible with polyurethane materials, which easily leads to a decrease in material performance.

[0006] Therefore, developing a barrier and explosion suppression material with excellent anti-fungal properties, good compatibility and economy has become a technical problem that needs to be solved urgently. Summary of the invention

[0007] The present application provides a barrier explosion-suppressing material with anti-fungal properties, a preparation method and an application thereof. By using an anti-fungal agent and a polyol component in combination, the barrier explosion-suppressing material achieves a long-lasting anti-fungal property. The prepared barrier explosion-suppressing material also takes into account both explosion-suppressing performance and fuel compatibility, thus solving the problem that existing barrier explosion-suppressing materials are prone to mold growth in humid or warm environments.

[0008] The technical solution adopted by this application to solve its technical problem is:

[0009] In a first aspect, the present application provides a barrier explosion suppression material with antifungal properties, comprising the following raw materials in parts by weight:

[0010] 50-80 parts of polytetramethylene ether glycol, 10-20 parts of polybutylene adipate glycol, 0.1-0.2 parts of catalyst, 1-2 parts of isocyanate, 4-5 parts of foaming agent, 4-5 parts of antifungal agent, 5-8 parts of chain extender, and 2-4 parts of stabilizer.

[0011] In one or more technical solutions, the CAS number of the polytetramethylene ether glycol is 25190-06-1, and the CAS number of the polybutylene adipate glycol is 32472-85-8.

[0012] Specifically, polytetramethylene ether glycol (PTMEG), CAS No. 25190-06-1, together with other polyols, provides the basic skeleton structure for polyurethane materials in barrier explosion suppression materials. The polymer chains formed by polytetramethylene ether glycol provide the necessary physical properties for barrier explosion suppression materials, such as flexibility, durability and mechanical strength.

[0013] Specifically, polybutylene adipate diol (PBAT for short, specifically polybutylene adipate diol, CAS No. 32472-85-8) as a polyol, works together with polytetramethylene ether glycol in barrier explosion suppression materials to provide a basic skeleton structure for polyurethane materials. Although the document does not describe the specific characteristics of polybutylene adipate diol in detail, as a polyol, it has good compatibility and is compatible with a variety of isocyanates and other additives, which is conducive to the formation of uniform and stable polyurethane materials.

[0014] In one or more technical solutions, the antifungal agent is composed of iodopropynyl n-butylamine formate and octamidine acetate in a weight ratio of 3:1.

[0015] Specifically, iodopropynyl n-butylamine formate and cefotaxime acetate are both common antifungal ingredients that can destroy the fungal cell membrane and interfere with its metabolism, thereby achieving the purpose of inhibiting fungal growth.

[0016] In barrier explosion suppression materials, the addition of antifungal agents is to prevent the growth of mold in humid or warm environments, which is essential to extend the service life of the materials and maintain their appearance and performance. Especially for fuel tank systems that need to be in harsh environments for a long time, the addition of antifungal agents can avoid contamination and damage caused by mold and ensure the normal operation of the system; through the composite use with polytetramethylene ether glycol and polybutylene adipate glycol, the antifungal agent achieves long-lasting antifungal performance in barrier explosion suppression materials.

[0017] In one or more technical solutions, the catalyst is dibutyltin dilaurate.

[0018] Specifically, dibutyltin dilaurate can promote the reaction between isocyanate and polyol and accelerate the formation of polyurethane. The characteristics of dibutyltin dilaurate are high catalytic activity, and a small amount can significantly accelerate the reaction speed, so that the synthesis of polyurethane can be carried out under milder conditions.

[0019] In one or more technical solutions, the foaming agent is water.

[0020] Specifically, water, as a foaming agent, is non-toxic, low-cost and easily available. When water comes into contact with isocyanate during the preparation process, a chemical reaction quickly occurs to generate carbon dioxide gas, thereby forming tiny bubbles inside the material, giving the material a foam structure.

[0021] As the raw material of barrier explosion suppression material, the role of the foaming agent is to produce a foam structure during the preparation process, so that the final material has the characteristics of light weight and porousness. This structure not only helps to absorb impact energy, but also improves the explosion suppression effect of the material. The presence of the foam structure enables the material to disperse the impact force more effectively, and the complex internal structure also helps to block the spread of flames, thereby achieving explosion suppression. In addition, the lightweight and porous characteristics also help to reduce the overall weight of the material, which is very beneficial for certain application fields, such as aerospace and automotive industries.

[0022] In one or more technical solutions, the chain extender is 1,4-butanediol.

[0023] Specifically, 1,4-butanediol has low viscosity and good solubility, which can increase the length of the polymer chain, thereby enhancing the toughness and wear resistance of the material. 1,4-butanediol reacts with isocyanate to introduce new chain segments, allowing the polyurethane molecular chain to be extended, thereby forming a denser network structure.

[0024] In barrier explosion suppression materials, the role of chain extenders is to further enhance the cross-linked network structure of polyurethane and improve the physical properties of the material. By adding an appropriate amount of chain extenders, the toughness and wear resistance of the material can be improved, making it more suitable for use as a filling material in a fuel tank. Chain extenders help to form a foam structure with good mechanical strength and elasticity, which not only helps to absorb impact energy, but also improves the explosion suppression ability of the material.

[0025] In one or more technical solutions, the stabilizer is dimethyl silicone oil.

[0026] Specifically, as an organic silicon compound, dimethyl silicone oil has good thermal and chemical stability, is not easy to react with other substances, and has good lubricity and shear resistance. The characteristics of dimethyl silicone oil also include wide temperature resistance, low volatility, and adjustable viscosity.

[0027] The addition of dimethyl silicone oil helps control and stabilize the reticular foam structure with the required pore size during the production process, playing a role in stabilizing the foam. In barrier explosion suppression materials, dimethyl silicone oil ensures the consistency and stability of the foam structure inside the material, preventing the foam from breaking or merging, so that the material has a uniformly distributed microporous structure, which helps to improve the explosion suppression performance and overall mechanical strength of the material. In addition, dimethyl silicone oil also helps to improve the aging resistance of the material, so that it can still maintain good performance after long-term use.

[0028] In one or more technical solutions, the isocyanate is isophorone diisocyanate.

[0029] Specifically, isophorone diisocyanate (IPDI), which is a difunctional isocyanate compound, is characterized by its high reactivity and its ability to react quickly with polyols to form polyurethane.

[0030] Isocyanate. During the preparation of explosion suppression materials, isocyanate reacts with polyols (such as polytetramethylene ether glycol and polybutylene adipate glycol) to form a cross-linked network structure of polyurethane, which enhances the strength and stability of the material.

[0031] In the second aspect, the present application provides a method for preparing the barrier and explosion-suppressing material described in the first aspect, comprising the following steps: take 50-80 parts of polytetramethylene ether glycol, 10-20 parts of polybutylene adipate glycol, 0.1-0.2 parts of catalyst, and 1-2 parts of isocyanate, mix them thoroughly, heat to 80°C under a nitrogen environment, and react at 80°C for 1-2 hours; then take 4-5 parts of foaming agent, 4-5 parts of antifungal agent, 5-8 parts of chain extender, and 2-4 parts of stabilizer, mix them thoroughly, heat to 140-150°C, and react for 7-8 hours; after the reaction is completed, cool to room temperature to obtain a barrier and explosion-suppressing material.

[0032] In a third aspect, the present application provides an application of an anti-fungal barrier and explosion-suppressing material, wherein the barrier and explosion-suppressing material described in the first aspect or the barrier and explosion-suppressing material prepared by the preparation method described in the second aspect is used as a filling material in a fuel tank.

[0033] The beneficial effects of this application are:

[0034] In the present invention, polytetramethylene ether glycol and polybutylene adipate glycol are used as polyol components to provide a basic skeleton structure for the polyurethane material; isocyanate is used as a crosslinking agent to react with the polyol to form a crosslinked network structure of the polyurethane, thereby enhancing the strength and stability of the material; the addition of a catalyst accelerates the crosslinking reaction of the polyurethane and improves the preparation efficiency; the addition of a chain extender further enhances the crosslinked network structure of the polyurethane and improves the toughness and wear resistance of the material;

[0035] At the same time, the foaming agent in the present invention plays a role in generating a foam structure during the preparation process, making the material light and porous, which helps to absorb impact energy and improve the explosion suppression effect. The addition of the stabilizer helps to stabilize the reticular foam with the pore size required for the production of explosion suppression materials and plays a role in stabilizing the foam.

[0036] Moreover, the antifungal agent in the present invention is composed of iodopropynyl n-butylamine formate and octamidine acetate, and these two components can act synergistically to effectively inhibit the growth and reproduction of molds. By compounding with the polyol component, the durable antifungal performance of the barrier explosion suppression material is achieved.

[0037] The barrier explosion-suppression material prepared by the present invention also has good explosion-suppression performance, fuel compatibility and excellent performance in aging tests. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0039] In this application, the term "and / or" describes the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0040] In the present application, "at least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, "at least one of a, b, or c", or "at least one of a, b, and c" can all represent: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can be single or multiple, respectively.

[0041] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution, some or all of the steps can be executed in parallel or sequentially, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0042] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0043] The weight of the relevant components mentioned in the embodiment description of the present application can not only refer to the specific content of each component, but also represent the proportional relationship between the weights of the components. Therefore, as long as the content of the relevant components is proportionally enlarged or reduced according to the embodiment description of the present application, it is within the scope disclosed in the embodiment description of the present application. Specifically, the mass described in the embodiment description of the present application can be a mass unit known in the chemical industry such as μg, mg, g, kg, etc.

[0044] The terms "first" and "second" are used only for descriptive purposes to distinguish objects such as substances from each other, and should not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. For example, without departing from the scope of the embodiments of the present application, the first XX may also be referred to as the second XX, and similarly, the second XX may also be referred to as the first XX. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0045] Example 1

[0046] The anti-fungal barrier explosion suppression material comprises the following raw materials in parts by weight:

[0047] 50 parts of polytetramethylene ether glycol (CAS No.: 25190-06-1), 10 parts of polybutylene adipate glycol (CAS No.: 32472-85-8), 0.1 parts of dibutyltin dilaurate, 1 part of isophorone diisocyanate, 4 parts of water, 3 parts of iodopropynyl n-butylamine formate, 1 part of octamidine acetate, 5 parts of 1,4-butanediol, and 2 parts of dimethyl silicone oil.

[0048] The method for preparing the above-mentioned barrier explosion suppression material comprises the following steps:

[0049] Take corresponding weight portions of polytetramethylene ether glycol, polybutylene adipate glycol, dibutyltin dilaurate, and isophorone diisocyanate, mix them thoroughly, heat them to 80°C in a nitrogen environment and anhydrous environment, and react at 80°C for 1 hour; then add water, iodopropynyl n-butylamine formate, octamidine acetate, 1,4-butanediol, and dimethyl silicone oil, mix them thoroughly, heat them to 140°C, and react for 8 hours; after the reaction is completed, cool them to room temperature to obtain a barrier and explosion-suppressing material.

[0050] Example 2

[0051] The anti-fungal barrier explosion suppression material comprises the following raw materials in parts by weight:

[0052] 80 parts of polytetramethylene ether glycol (CAS No.: 25190-06-1), 20 parts of polybutylene adipate glycol (CAS No.: 32472-85-8), 0.2 parts of dibutyltin dilaurate, 2 parts of isophorone diisocyanate, 5 parts of water, 3.75 parts of iodopropynyl n-butylamine formate, 1.25 parts of octamidine acetate, 8 parts of 1,4-butanediol, and 4 parts of dimethyl silicone oil.

[0053] The method for preparing the above-mentioned barrier explosion suppression material comprises the following steps:

[0054] Take corresponding weight portions of polytetramethylene ether glycol, polybutylene adipate glycol, dibutyltin dilaurate, and isophorone diisocyanate, mix them thoroughly, heat them to 80°C in a nitrogen environment and anhydrous environment, and react at 80°C for 2 hours; then add water, iodopropynyl n-butylamine formate, octamidine acetate, 1,4-butanediol, and dimethyl silicone oil, mix them thoroughly, heat them to 150°C, and react for 7 hours; after the reaction is completed, cool them to room temperature to obtain a barrier and explosion-suppressing material.

[0055] Example 3

[0056] The anti-fungal barrier explosion suppression material comprises the following raw materials in parts by weight:

[0057] 65 parts of polytetramethylene ether glycol (CAS No.: 25190-06-1), 15 parts of polybutylene adipate glycol (CAS No.: 32472-85-8), 0.15 parts of dibutyltin dilaurate, 1.5 parts of isophorone diisocyanate, 4.5 parts of water, 3 parts of iodopropynyl n-butylamine formate, 1 part of octamidine acetate, 7 parts of 1,4-butanediol, and 3 parts of dimethyl silicone oil.

[0058] The method for preparing the above-mentioned barrier explosion suppression material comprises the following steps:

[0059] Take corresponding weight portions of polytetramethylene ether glycol, polybutylene adipate glycol, dibutyltin dilaurate, and isophorone diisocyanate, mix them thoroughly, heat them to 80°C in a nitrogen environment and anhydrous environment, and react at 80°C for 1.5 hours; then add water, iodopropynyl n-butylamine formate, octamidine acetate, 1,4-butanediol, and dimethyl silicone oil, mix them thoroughly, heat them to 145°C, and react for 7.5 hours; after the reaction is completed, cool them to room temperature to obtain a barrier and explosion-suppressing material.

[0060] Example 4

[0061] The anti-fungal barrier explosion suppression material comprises the following raw materials in parts by weight:

[0062] 60 parts of polytetramethylene ether glycol (CAS No.: 25190-06-1), 13 parts of polybutylene adipate glycol (CAS No.: 32472-85-8), 0.1 parts of dibutyltin dilaurate, 1 part of isophorone diisocyanate, 5 parts of water, 3 parts of iodopropynyl n-butylamine formate, 1 part of octamidine acetate, 6 parts of 1,4-butanediol, and 3 parts of dimethyl silicone oil.

[0063] The method for preparing the above-mentioned barrier explosion suppression material comprises the following steps:

[0064] Take corresponding weight portions of polytetramethylene ether glycol, polybutylene adipate glycol, dibutyltin dilaurate, and isophorone diisocyanate, mix them thoroughly, heat them to 80°C in a nitrogen environment and anhydrous environment, and react at 80°C for 1 hour; then add water, iodopropynyl n-butylamine formate, octamidine acetate, 1,4-butanediol, and dimethyl silicone oil, mix them thoroughly, heat them to 140°C, and react for 7 hours; after the reaction is completed, cool them to room temperature to obtain a barrier and explosion-suppressing material.

[0065] Example 5

[0066] The anti-fungal barrier explosion suppression material comprises the following raw materials in parts by weight:

[0067] 75 parts of polytetramethylene ether glycol (CAS No.: 25190-06-1), 18 parts of polybutylene adipate glycol (CAS No.: 32472-85-8), 0.2 parts of dibutyltin dilaurate, 2 parts of isophorone diisocyanate, 4 parts of water, 3.75 parts of iodopropynyl n-butylamine formate, 1.25 parts of octamidine acetate, 7 parts of 1,4-butanediol, and 4 parts of dimethyl silicone oil.

[0068] The method for preparing the above-mentioned barrier explosion suppression material comprises the following steps:

[0069] Take corresponding weight portions of polytetramethylene ether glycol, polybutylene adipate glycol, dibutyltin dilaurate, and isophorone diisocyanate, mix them thoroughly, heat them to 80°C in a nitrogen environment and anhydrous environment, and react at 80°C for 2 hours; then add water, iodopropynyl n-butylamine formate, octamidine acetate, 1,4-butanediol, and dimethyl silicone oil, mix them thoroughly, heat them to 150°C, and react for 8 hours; after the reaction is completed, cool them to room temperature to obtain a barrier and explosion-suppressing material.

[0070] Comparative Example 1

[0071] The barrier explosion suppression material comprises the following raw materials in parts by weight:

[0072] 50 parts of polytetramethylene ether glycol (CAS No.: 25190-06-1), 10 parts of polybutylene adipate glycol (CAS No.: 32472-85-8), 0.1 parts of dibutyltin dilaurate, 1 part of isophorone diisocyanate, 4 parts of water, 5 parts of 1,4-butanediol, and 2 parts of dimethyl silicone oil.

[0073] The method for preparing the above-mentioned barrier explosion suppression material comprises the following steps:

[0074] Take corresponding weight portions of polytetramethylene ether glycol, polybutylene adipate glycol, dibutyltin dilaurate, and isophorone diisocyanate, mix them thoroughly, heat them to 80°C in a nitrogen environment and anhydrous environment, and react at 80°C for 1 hour; then add water, 1,4-butanediol, and dimethyl silicone oil, mix them thoroughly, heat them to 140°C, and react for 8 hours; after the reaction is completed, cool them to room temperature to obtain a barrier and explosion-suppressing material.

[0075] Comparative Example 2

[0076] The barrier explosion suppression material comprises the following raw materials in parts by weight:

[0077] 50 parts of polytetramethylene ether glycol (CAS No.: 25190-06-1), 10 parts of polybutylene adipate glycol (CAS No.: 32472-85-8), 0.1 parts of dibutyltin dilaurate, 1 part of isophorone diisocyanate, 4 parts of water, 3 parts of iodopropynyl n-butylamine formate, 5 parts of 1,4-butanediol, and 2 parts of dimethyl silicone oil.

[0078] The method for preparing the above-mentioned barrier explosion suppression material comprises the following steps:

[0079] Take corresponding weight portions of polytetramethylene ether glycol, polybutylene adipate glycol, dibutyltin dilaurate, and isophorone diisocyanate, mix them thoroughly, heat them to 80°C in a nitrogen environment and anhydrous environment, and react at 80°C for 1 hour; then add water, iodopropynyl n-butylamine formate, 1,4-butanediol, and dimethyl silicone oil, mix them thoroughly, heat them to 140°C, and react for 8 hours; after the reaction is completed, cool them to room temperature to obtain a barrier and explosion-suppressing material.

[0080] Comparative Example 3

[0081] The barrier explosion suppression material comprises the following raw materials in parts by weight:

[0082] 50 parts of polytetramethylene ether glycol (CAS No.: 25190-06-1), 10 parts of polybutylene adipate glycol (CAS No.: 32472-85-8), 0.1 parts of dibutyltin dilaurate, 1 part of isophorone diisocyanate, 4 parts of water, 1 part of octamidine acetate, 5 parts of 1,4-butanediol, and 2 parts of dimethyl silicone oil.

[0083] The method for preparing the above-mentioned barrier explosion suppression material comprises the following steps:

[0084] Take corresponding weight portions of polytetramethylene ether glycol, polybutylene adipate glycol, dibutyltin dilaurate, and isophorone diisocyanate, mix them thoroughly, heat them to 80°C in a nitrogen environment and anhydrous environment, and react at 80°C for 1 hour; then add water, octamidine acetate, 1,4-butanediol, and dimethyl silicone oil, mix them thoroughly, heat them to 140°C, and react for 8 hours; after the reaction is completed, cool them to room temperature to obtain a barrier explosion suppression material.

[0085] Comparative Example 4

[0086] The anti-fungal barrier explosion suppression material comprises the following raw materials in parts by weight:

[0087] 50 parts of polytetramethylene ether glycol (CAS No.: 25190-06-1), 0.1 parts of dibutyltin dilaurate, 1 part of isophorone diisocyanate, 4 parts of water, 3 parts of iodopropynyl n-butylamine formate, 1 part of octamidine acetate, 5 parts of 1,4-butanediol, and 2 parts of dimethyl silicone oil.

[0088] The method for preparing the above-mentioned barrier explosion suppression material comprises the following steps:

[0089] Take corresponding weight portions of polytetramethylene ether glycol, dibutyltin dilaurate, and isophorone diisocyanate, mix them thoroughly, heat them to 80°C in a nitrogen environment and anhydrous environment, and react at 80°C for 1 hour; then add water, iodopropynyl n-butylamine formate, octamidine acetate, 1,4-butanediol, and dimethyl silicone oil, mix them thoroughly, heat them to 140°C, and react for 8 hours; after the reaction is completed, cool them to room temperature to obtain a barrier explosion suppression material.

[0090] Comparative Example 5

[0091] The anti-fungal barrier explosion suppression material comprises the following raw materials in parts by weight:

[0092] 50 parts of polybutylene adipate diol (CAS No.: 32472-85-8), 0.1 parts of dibutyltin dilaurate, 1 part of isophorone diisocyanate, 4 parts of water, 3 parts of iodopropynyl n-butylamine formate, 1 part of octamidine acetate, 5 parts of 1,4-butanediol, and 2 parts of dimethyl silicone oil.

[0093] The method for preparing the above-mentioned barrier explosion suppression material comprises the following steps:

[0094] Take corresponding weight parts of polybutylene adipate diol, dibutyltin dilaurate, and isophorone diisocyanate, mix them thoroughly, heat them to 80°C in a nitrogen environment and anhydrous environment, and react at 80°C for 1 hour; then add water, iodopropynyl n-butylamine formate, octamidine acetate, 1,4-butanediol, and dimethyl silicone oil, mix them thoroughly, heat them to 140°C, and react for 8 hours; after the reaction is completed, cool them to room temperature to obtain a barrier and explosion-suppressing material.

[0095] The barrier explosion suppression materials prepared in Examples 1-5 and Comparative Examples 1-5 were subjected to the following performance tests:

[0096] 1. Anti-fungal properties

[0097] Conduct mold test in accordance with the provisions of GJB150.10A-2009;

[0098] Among them, level 0: no mold growth on the material;

[0099] Grade 1: Scattered, sparse or very localized mold growth;

[0100] Level 2: The mold spreads intermittently on the surface of the material or the colonies are loosely distributed, or the hyphae extend continuously on the entire surface, but the material under the mold is still visible;

[0101] Level 3: Mold grows in large quantities and the material may show visible structural changes;

[0102] Level 4: Heavy mold growth.

[0103] 2. Explosion suppression performance

[0104] Under the conditions that the initial pressure (gauge pressure) in the test container is not more than 8kPa and the single-sided ignition space is 20%, the explosion pressurization test is carried out to detect the pressurization pressure, which is required not to exceed 64kPa.

[0105] 3. Fuel compatibility

[0106] The sample to be tested is immersed in fuel oil at 70°C for 10 days, and the density and viscosity of the fuel oil before and after immersion are tested (tested at -20°C).

[0107] The above test results are summarized in Table 1;

[0108] Table 1

[0109]

[0110] From Table 1, we can see that:

[0111] The antifungal barrier explosion suppression materials of Examples 1 to 5 have the following properties:

[0112] Antifungal performance: The materials of Examples 1 to 5 were all grade 0, indicating that no mold grew on these materials, showing excellent antifungal performance.

[0113] Explosion suppression performance: The explosion suppression performance of the materials in Examples 1 to 5 are 55 kPa, 38 kPa, 47 kPa, 52 kPa and 41 kPa, respectively. These values ​​are all lower than the standard requirement of 64 kPa, indicating that these materials have good explosion suppression performance.

[0114] Fuel compatibility: The density and viscosity of the materials in Examples 1 to 5 in fuel oil change very little. The density of the fuel oil before and after immersion remains at 813 kg / m 3 , viscosity changes within ±0.1mm 2 / s, which shows that these materials have little impact on fuel and have good fuel compatibility.

[0115] The barrier explosion suppression material of comparative example 1 exhibits a level 4 anti-fungal performance, which means that a large amount of mold grows on the material. In the explosion suppression performance test, the material of comparative example 1 performs similarly to that of example 1, and the pressurized pressure is 55 kPa, which meets the standard requirement of not exceeding 64 kPa.

[0116] Compared with Example 1, Comparative Example 1 did not add an antifungal agent, and the material performed poorly in antifungal performance. The antifungal grade of Example 1 was 0, indicating that there was no mold growth, while the antifungal grade of Comparative Example 1 was 3. This is the type or amount of antifungal agent. Example 1 contains iodopropynyl n-butylamine formate and octamidine acetate as antifungal agents, and they are present in a certain ratio (3:1), which helps to synergistically inhibit the growth of mold. If the same antifungal agent is not used in Comparative Example 1, the antifungal performance is significantly reduced.

[0117] The barrier explosion suppression material of Comparative Example 2 showed a grade 1 anti-fungal performance, which means that there was dispersed, sparse or very localized mold growth on the material. In the explosion suppression performance test, the boost pressure of the material of Comparative Example 2 reached 56 kPa, slightly higher than 55 kPa of Example 1, but still met the requirement of not exceeding 64 kPa. For fuel compatibility, the density of the material of Comparative Example 2 in fuel remained unchanged, but the viscosity increased from the original 5.6 mm 2 / s increased to 5.8mm 2 / s.

[0118] Compared with Example 1, the antifungal performance of Comparative Example 2 is lower, because in Example 1, two antifungal agents, iodopropynyl n-butylamine formate and octamidine acetate, are used and mixed at a weight ratio of 3:1, thereby obtaining a better antifungal effect. In Comparative Example 2, although iodopropynyl n-butylamine formate is also used as an antifungal agent, octamidine acetate is not used, which reduces the antifungal effect.

[0119] The barrier explosion suppression material of Comparative Example 3 showed a level 2 anti-fungal performance, which means that there was intermittent spread of fungi on the surface of the material or loose distribution of colonies, or continuous extension of hyphae on the entire surface, but the material under the fungi was still visible. In the explosion suppression performance test, the boost pressure of Comparative Example 3 was 57kPa, which met the standard requirement of not more than 64kPa. In terms of fuel compatibility, the density of Comparative Example 3 in fuel remained unchanged, but the viscosity increased from the original 5.6mm 2 / s increased to 5.8mm 2 / s.

[0120] Compared with Example 1, the antifungal performance of Comparative Example 3 is poor, which is mainly because only oxadiazine acetate is used as the antifungal agent in Comparative Example 3, while the antifungal agent used in Example 1 is composed of iodopropynyl n-butylamine formate and oxadiazine acetate in a weight ratio of 3:1. Obviously, the use of a single antifungal agent (oxadiazine acetate) is not as effective as the composite antifungal agent, resulting in the decrease of the antifungal performance of Comparative Example 3.

[0121] The barrier explosion suppression material of Comparative Example 4 shows a grade 0 anti-fungal performance, which means that the material has no mold growth and shows excellent anti-fungal performance. However, its explosion suppression performance is 78 kPa, which exceeds 55 kPa of Example 1 and is close to but does not exceed the standard requirement of 64 kPa. In terms of fuel compatibility, the density of Comparative Example 4 in fuel is 813 kg / m 3 Changed to 865kg / m 3 , viscosity from 5.6mm 2 / s increased to 7.8mm 2 / s, indicating that comparative example 4 has a greater impact on fuel.

[0122] Compared with Example 1, the antifungal performance of Comparative Example 4 is also excellent, but the explosion suppression performance is relatively poor, and the fuel compatibility is also poor. This is because polybutylene adipate diol (PBAT) is not used in Comparative Example 4. Polybutylene adipate diol is compatible with a variety of isocyanates and other additives, which is conducive to forming a uniform and stable polyurethane material, thereby reducing the fuel compatibility of the material.

[0123] The barrier explosion suppression material of Comparative Example 5 exhibited a grade 0 anti-fungal performance, which means that no mold grew on the material. However, its explosion suppression performance was 99 kPa, much higher than 55 kPa of Example 1, and exceeded the standard requirement of 64 kPa. In addition, the performance of Comparative Example 5 in fuel compatibility was not as good as that of Example 1, with the fuel density increasing from 813 kg / m 3 Increased to 927kg / m 3 , viscosity from 5.6mm 2 / s increased to 8.2mm 2 / s.

[0124] Compared with Example 1, the antifungal performance of Comparative Example 5 is the same, but the explosion suppression performance is significantly worse. This is because polytetramethylene ether glycol (PTMEG) is not used in Comparative Example 5, but only polybutylene adipate glycol (PBAT) is used. PTMEG generally provides necessary physical properties in polyurethane materials, such as flexibility, durability, and mechanical strength, which helps to improve the overall performance of the material, including explosion suppression, resulting in a decrease in the explosion suppression performance of the material.

[0125] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. The anti-fungal barrier explosion-suppression material is characterized by: The invention comprises the following raw materials in parts by weight: 50-80 parts of polytetramethylene ether glycol, 10-20 parts of polybutylene adipate glycol, 0.1-0.2 parts of catalyst, 1-2 parts of isocyanate, 4-5 parts of foaming agent, 4-5 parts of antifungal agent, 5-8 parts of chain extender, and 2-4 parts of stabilizer.

2. The barrier explosion suppression material according to claim 1, characterized in that: The CAS number of the polytetramethylene ether glycol is 25190-06-1, and the CAS number of the polybutylene adipate glycol is 32472-85-8.

3. The barrier explosion suppression material according to claim 1, characterized in that: The antifungal agent is composed of iodopropynyl n-butylamine formate and octamidine acetate in a weight ratio of 3:

1.

4. The barrier explosion suppression material according to claim 1, characterized in that: The catalyst is dibutyltin dilaurate.

5. The barrier explosion suppression material according to claim 1, characterized in that: The foaming agent is water.

6. The barrier explosion suppression material according to claim 1, characterized in that: The chain extender is 1,4-butanediol.

7. The barrier explosion suppression material according to claim 1, characterized in that: The stabilizer is dimethyl silicone oil.

8. The barrier explosion suppression material according to claim 1, characterized in that: The isocyanate is isophorone diisocyanate.

9. The method for preparing the barrier explosion suppression material according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: taking 50-80 parts of polytetramethylene ether glycol, 10-20 parts of polybutylene adipate glycol, 0.1-0.2 parts of catalyst and 1-2 parts of isocyanate, mixing them fully, heating to 80°C in a nitrogen environment, and reacting at 80°C for 1-2 hours; then taking 4-5 parts of foaming agent, 4-5 parts of antifungal agent, 5-8 parts of chain extender and 2-4 parts of stabilizer, mixing them fully, heating to 140-150°C, and reacting for 7-8 hours; after the reaction is completed, cooling to room temperature to obtain a barrier explosion suppression material.

10. Application of antifungal barrier explosion suppression material, characterized in that: The barrier explosion-suppression material according to any one of claims 1 to 8 or the barrier explosion-suppression material prepared by the preparation method according to claim 9 is used as a filling material in a fuel tank.

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