Deodorizing composition, low-odor polymer material as well as preparation method and application of low-odor polymer material

Abstract

The invention discloses a deodorizing composition, a low-odor polymer material and a preparation method and application of the low-odor polymer material, the deodorizing composition comprises a metallic soap deodorant, a deodorant activating substance and an antioxidant, and the mass ratio of the metallic soap deodorant to the deodorant activating substance to the antioxidant is (0.1-0.5): (0.02-0.05): (0.1-0.5). The deodorizing composition provided by the invention can quickly and permanently remove various odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and derivatives thereof in the environment. The antioxidant in the deodorizing composition can effectively reduce the possibility that the polyolefin material generates odor substances such as oxidation, degradation, cracking and the like in the processes of blending modification, thermal forming, long-term use and the like. Meanwhile, the deodorizing composition is safe and environment-friendly. In addition, the odor removal composition disclosed by the invention is relatively high in compatibility.

Description

Technical Field

[0001] The present application relates to the technical field of material deodorization, and in particular to a deodorizing composition, a low-odor polymer material, a preparation method thereof, and applications thereof. Background Art

[0002] The interior space of a car is small, and it is easy for various odors to accumulate. Using deodorizers can effectively remove these odors and keep the air in the car fresh. However, due to the use of a large number of organic chemical materials, new odor substances often continue to evaporate during use, causing odor problems in the cockpit. In order to solve the odor problem from the root, it is necessary to solve the odor substances from the source.

[0003] A deodorant is a chemical or natural substance used to eliminate or reduce bad odors, including physical deodorants and chemical deodorants. The use of physical deodorants in automotive materials is limited because the materials are often subjected to heating, melting, thermoforming, high-temperature exposure, etc. during preparation and use in the cockpit. Physical deodorants are prone to thermal desorption of odorous substances under the action of high temperatures, and the odorous substances cannot be fundamentally removed. Chemical deodorants use oxidation, reduction decomposition, neutralization reactions, etc. to convert odorous substances into odorless substances, thereby eliminating odors. However, existing chemical deodorants cannot effectively remove odors in cars. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the purpose of the present application is to propose a deodorizing composition, a low-odor polymer material, a preparation method thereof, and an application thereof. The deodorizing composition of the present application can quickly and permanently remove a variety of odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and its derivatives in the environment. The antioxidant in the deodorizing composition can effectively reduce the possibility of polyolefin materials being oxidized, degraded, cracked, etc. to produce odorous substances during the processes of blending modification, thermoforming, long-term use, etc. At the same time, the deodorizing composition is safe and environmentally friendly. In addition, the deodorizing composition of the present application has strong compatibility.

[0005] In the first aspect of the present application, a deodorizing composition is provided. According to an embodiment of the present application, the deodorizing composition comprises: a metal soap deodorant, a deodorant activating substance and an antioxidant, wherein the mass ratio of the metal soap deodorant, the deodorant activating substance and the antioxidant is (0.1-0.5):(0.02-0.05):(0.1-0.5).

[0006] According to the deodorizing composition of the above-mentioned embodiment of the present application, the metal soap deodorizer can quickly and permanently remove various odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, thiols, thioethers, isovaleric acid, benzene and its derivatives in the environment under the joint active action of the deodorizer activating substance and the antioxidant. Antioxidants can effectively reduce the possibility of polyolefin materials producing odorous substances such as oxidation, degradation, and cracking during the processes of blending modification, thermoforming, and long-term use. At the same time, the deodorizing composition is environmentally friendly and safe, the metal soap deodorizer has high biodegradability, and the antioxidant has good hydrolysis resistance, and can maintain its performance even in a humid environment. In addition, compared with traditional odor absorbers, the deodorizing composition of the present application has strong compatibility, and while removing odor molecules, it will not affect flavors, perfumes, aromatherapy, etc.

[0007] In addition, the deodorizing composition according to the above embodiment of the present application may also have the following additional technical features:

[0008] In some embodiments of the present application, the metal soap deodorant includes at least one of zinc ricinoleate, magnesium ricinoleate, sodium ricinoleate, potassium ricinoleate and zinc ricinoleate.

[0009] In some embodiments of the present application, the deodorant activating substance includes at least one of water and ethanol.

[0010] In some embodiments of the present application, the antioxidant includes at least one of a phosphite antioxidant, an aromatic amine antioxidant, a hindered phenol antioxidant, and a thioester antioxidant.

[0011] In some embodiments of the present application, the deodorizing composition further comprises a fragrance.

[0012] In some embodiments of the present application, the mass ratio of the metal soap deodorant to the fragrance is (0.1-0.5):(0.1-0.5).

[0013] In some embodiments of the present application, the deodorizing composition further comprises an antibacterial agent.

[0014] In some embodiments of the present application, the mass ratio of the metal soap deodorant to the antibacterial agent is (0.1-0.5):(0.1-0.5).

[0015] In the second aspect of the present application, a low-odor polymer material is proposed. According to an embodiment of the present application, the low-odor polymer material includes the deodorizing composition described in the above embodiment. As a result, the deodorizing composition can quickly and permanently remove a variety of odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and its derivatives in the polymer material and the environment. At the same time, the deodorizing composition can also effectively reduce the possibility of oxidation, degradation, cracking, etc. of the polymer material during the process of blending modification, thermoforming, long-term use, etc. to produce odorous substances.

[0016] In addition, the low-odor polymer material according to the above embodiment of the present application may also have the following additional technical features:

[0017] In some embodiments of the present application, the low-odor polymer material includes a polyolefin resin, a metal soap deodorant, a deodorant activating substance, and an antioxidant.

[0018] In some embodiments of the present application, the low-odor polymer material includes 97.95wt% to 99.78wt% of a polyolefin resin, 0.1wt% to 0.5wt% of a metal soap deodorant, 0.02wt% to 0.05wt% of a deodorant activating substance, and 0.1wt% to 0.5wt% of an antioxidant.

[0019] In a third aspect of the present application, a method for preparing the low-odor polymer material is proposed. According to an embodiment of the present application, the method comprises:

[0020] Mixing a metal soap deodorant, a deodorant activating substance and an antioxidant to obtain a deodorizing composition;

[0021] The deodorizing composition and polyolefin resin are mixed by injection molding to obtain the low-odor polymer material.

[0022] According to the method for preparing low-odor polymer materials in the above embodiment of the present application, the pre-mixed deodorizing composition and polyolefin resin are injection molded and mixed, and the deodorizing composition can quickly and permanently remove a variety of odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and its derivatives in the polyolefin resin material and the environment. At the same time, the deodorizing composition can also effectively reduce the possibility of polyolefin resin materials being oxidized, degraded, cracked, etc. to produce odorous substances during the process of blending modification, thermoforming, long-term use, etc.

[0023] In some embodiments of the present application, the temperature of the injection molding mixture is 210° C. to 240° C., the time of the injection molding mixture is 2 min to 7 min; and / or the injection molding mixture is carried out under an inert atmosphere.

[0024] In the fourth aspect of the present application, a low-odor polymer material as described in the above embodiment or a low-odor polymer material prepared by the method described in the above embodiment is proposed for use in automobile interior, automobile exterior, electrical appliance housing, toys and daily necessities. Thus, a variety of odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and its derivatives in automobile interior, automobile exterior, electrical appliance housing, toys or daily necessities and their environment can be quickly and permanently removed, and at the same time, the possibility of odor substances being generated by oxidation, degradation, cracking, etc. in automobile interior, automobile exterior, electrical appliance housing, toys or daily necessities during long-term use can be effectively reduced.

[0025] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below. The embodiments described below are exemplary and are intended to be used to explain the present application, but should not be construed as limiting the present application.

[0027] In the first aspect of the present application, a deodorizing composition is proposed. According to an embodiment of the present application, the deodorizing composition comprises: a metal soap deodorizer, a deodorizer activating substance and an antioxidant, and the mass ratio of the metal soap deodorizer, the deodorizer activating substance and the antioxidant is (0.1-0.5):(0.02-0.05):(0.1-0.5). As a result, the metal soap deodorizer can quickly and permanently remove a variety of odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and its derivatives in the environment under the joint active action of the deodorizer activating substance and the antioxidant. The antioxidant can effectively reduce the possibility of polyolefin materials being oxidized, degraded, cracked, etc. to produce odorous substances during the processes of blending modification, thermoforming, long-term use, etc. At the same time, the deodorizing composition is environmentally friendly and safe, the metal soap deodorizer has high biodegradability, and the antioxidant has good hydrolysis resistance, and its performance can be maintained even in a humid environment. In addition, compared with traditional odor absorbers, the deodorizing composition of the present application has stronger compatibility and will not affect flavors, perfumes, aromatherapy, etc. while removing odor molecules.

[0028] The beneficial effects that the deodorizing composition proposed in this application can achieve are described in detail below:

[0029] In the present application, the metal soap deodorant deodorizes by bonding mechanism. The activated metal ions (such as zinc ions) can form strong chemical bonds with nitrogen, sulfur and other atoms in the odor. Therefore, the metal soap deodorant can form irreversible bonds with formaldehyde and other odor molecules (such as ammonia, hydrogen sulfide, mercaptan, trimethylamine, etc.), thereby completely eliminating the odor. Metal soap deodorants (especially zinc ricinoleate and zinc ricinoleate ester) perform well in deodorization and can quickly and permanently remove odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and its derivatives in the environment. In addition, the metal soap deodorant has low absorption toxicity through the skin, mouth and respiratory tract, and is safe and reliable to use. In summary, metal soap deodorizer has the characteristics of rapid decomposition of odor sources, safety and environmental protection, no harmful substances, high active content, non-toxic and easy biodegradation. When used in cars, it can truly remove odors in the car instead of covering them up with fragrances. It is harmless to the human body, does not contain ozone, does not damage textile fibers, decorations, leather furniture, metals, etc., and has no odor or stains after use. At the same time, metal soap deodorizer also has good stability and antioxidant properties.

[0030] The deodorant activating substance in the present application can effectively activate the metal soap deodorant (such as zinc ricinoleate), and the metal soap deodorant can be activated by interacting with the deodorant activating substance. The deodorizing reaction of the metal soap deodorant mainly involves its chemical reaction with the odor molecules. The activated metal ions can form highly coordinated complexes with most odor molecules. This reaction is irreversible. A portion of metal soap deodorant can combine with about 2-4 odor molecules, thereby achieving permanent removal of odor. The following is a detailed introduction to its principle using zinc ricinoleate as an example: During the formation of the complex, the ricinoleic acid residues unfold, and the hydroxyl groups are released and oriented to the aqueous phase, providing good solubility for the complex. Since the interaction between the deodorant activating substance and zinc ricinoleate is weak, re-complexation may occur. Since the formation of the complex is a reversible process in dynamic equilibrium, its geometric structure is constantly changing. Zinc ions can be attacked by other nucleophiles. Compared with the interaction of the deodorant activating substance, the interaction between zinc ions and nitrogen or sulfur-containing molecules is very strong, so after the metal soap deodorant and the deodorant activating substance are compounded, the deodorant composition can maintain a stable deodorizing effect even at high temperatures. It should be noted that the metal soap deodorant is not active in deodorization, especially zinc ricinoleate itself is a waxy substance, insoluble in water, and is not active in deodorization. The reason is that the zinc atom of the zinc ricinoleate molecule forms an intramolecular complex with the oxygen atom free electron pair of the hydroxyl group of the ricinoleic acid residue in the same molecule. Due to the electrostatic shielding provided by the oxygen atom of the ligand, Zn 2+ The metal soap deodorant is protected from nucleophilic attacks by other molecules, which makes it inactive in deodorization. Therefore, when the metal soap deodorant is used, it must be activated in order to achieve the desired deodorization effect.

[0031] The antioxidant in the present application also has a certain activation effect on the metal soap deodorant. The metal soap deodorant can only play a better deodorizing effect under the joint activation of the deodorant activating substance and the antioxidant. In addition, the antioxidant in the present application also has the effect of delaying or preventing the oxidation or self-oxidation process of the polyolefin material. Polyolefin materials are affected by factors such as light, heat, oxygen, mechanical shearing and heavy metal ions during processing and use, and are prone to aging and degradation, thereby losing their use value. Antioxidants can effectively improve the antioxidant properties of polyolefin materials. At the same time, antioxidants help reduce the probability of thermal decomposition of polyolefin materials, thereby effectively reducing the generation of odorous substances and improving the odor of polyolefin materials.

[0032] The mechanism by which antioxidants effectively improve the antioxidant properties of polyolefin materials is as follows:

[0033] Polyolefin materials are prone to macromolecular chain rupture under the action of heat and oxygen, generating free radicals. These free radicals will further trigger the cracking, branching and cross-linking of the entire macromolecular chain, ultimately leading to polyolefin aging and deterioration, and also generating odorous substances in the process. The function of antioxidants is to prevent the auto-oxidation chain reaction of polyolefin materials, that is, to supply hydrogen to convert the free radicals R· and ROO· generated in the oxidation process into RH and ROOH, or to convert ROOH into ROH, thereby improving the anti-oxidation and anti-pyrolysis capabilities of polyolefin materials in processing and application.

[0034] According to some specific embodiments of the present application, the mass ratio of the metal soap deodorant, the deodorant activating substance and the antioxidant is (0.1-0.5):(0.02-0.05):(0.1-0.5), thereby further ensuring that the deodorizing composition formed by the metal soap deodorant, the deodorant activating substance and the antioxidant can quickly and permanently remove a variety of odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, thiols, thioethers, isovaleric acid, benzene and its derivatives in the environment, and at the same time further ensuring that the antioxidant effectively reduces the possibility of polyolefin materials being oxidized, degraded, cracked, etc. to produce odorous substances during the processes of blending modification, thermoforming, long-term use, etc.

[0035] In the embodiments of the present application, the specific type of the metal soap deodorant is not particularly limited, and those skilled in the art can select it according to actual needs. According to some specific embodiments of the present application, the metal soap deodorant includes at least one of zinc ricinoleate, magnesium ricinoleate, sodium ricinoleate, potassium ricinoleate and zinc ricinoleate, preferably zinc ricinoleate. Zinc ricinoleate is a metal soap, and its molecular formula is (C 18 H 32O3)2Zn, with a molecular weight of 657.38, is prepared by chemical reaction of ricinoleic acid and zinc salt. It is a white powdery solid, soluble in organic solvents but insoluble in water. Zinc ricinoleate has the following advantages: (1) Natural raw materials: Zinc ricinoleate is prepared by activation of ricinoleic acid, a natural fatty acid, as raw material. It does not contain harmful chemicals and is environmentally friendly. (2) Safety: Zinc ricinoleate has a high content of active substances and low toxicity through skin, oral and respiratory absorption, making it safe and reliable to use. (3) Easy to biodegrade: Zinc ricinoleate achieves the purpose of quickly and permanently removing odor molecules from the environment through irreversible chemical reactions such as chemical bonding, oxidation-reduction and salt formation with odor molecules. Since its reaction products are easily biodegradable, they will not cause secondary pollution to the environment. (4) Removal of various odors: Zinc ricinoleate can effectively remove a variety of odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, thiols, sulfides, isovaleric acid, benzene and its derivatives, and has a broad-spectrum deodorizing effect. (5) Zinc sesame oleate has good stability and antioxidant properties.

[0036] In the embodiments of the present application, the specific types of the metal soap deodorant are not particularly limited, and those skilled in the art can select according to actual needs. According to some specific embodiments of the present application, the deodorant activating substance includes at least one of water and ethanol. Deionized water is preferred, as deionized water has a more excellent function of activating the metal soap deodorant, and does not introduce organic solvents, which is beneficial to reducing the content of volatile organic compounds (VOCs) and has a lower odor.

[0037] In an embodiment of the present application, the electrical conductivity of the water is 0.07μs / cm to 200μs / cm, for example, it can be 0.07μs / cm, 0.1μs / cm, 0.9μs / cm, 1μs / cm, 10μs / cm, 50μs / cm, 100μs / cm, 150μs / cm, 200μs / cm, etc., thereby further ensuring that the deionized water has a better function of activating the metal soap deodorant.

[0038] In the embodiments of the present application, the specific types of the above-mentioned antioxidants are not particularly limited, and those skilled in the art can select according to actual needs. According to some specific embodiments of the present application, the antioxidant includes at least one of phosphite antioxidants, aromatic amine antioxidants, hindered phenol antioxidants and thioester antioxidants. Preferably, phosphite antioxidants have more excellent antioxidant properties, and phosphite antioxidants are made of phosphite as raw materials, and have the advantages of inhibiting discoloration, fast decomposition speed, high phosphorus content, good thermal stability, low volatility, and good hydrolysis resistance. More preferably, tris (2,4-di-tert-butylphenyl) phosphite (abbreviated as antioxidant 168) has high thermal stability and can effectively decompose the hydroperoxides produced during the thermal processing of polymer materials, thereby improving the thermal stability of polyolefin materials. Antioxidant 168 can also effectively improve the antioxidant properties of polyolefin materials. Antioxidant 168 can also prevent polymer degradation caused by processing, thereby effectively avoiding molecular weight changes (such as chain breakage and cross-linking) and matrix color changes caused by processing of polyolefin materials, thereby helping to maintain the processing stability of polyolefin materials. In addition, antioxidant 168 has good hydrolysis resistance and can maintain its antioxidant properties even in a humid environment, reducing the degradation of material properties caused by hydrolysis. Antioxidant 168 is a low-toxic, low-volatile antioxidant that is environmentally friendly. In summary, antioxidant 168 has more excellent thermal stability, antioxidant properties, processing stability, environmental protection, safety characteristics, hydrolysis resistance, etc.

[0039] According to some specific embodiments of the present application, the deodorizing composition may further include essence. The deodorizing composition is compatible with a variety of essences. An appropriate amount of essence may be added to the deodorizing composition to enhance the sensory effect of the product.

[0040] According to some further specific embodiments of the present application, the mass ratio of the metal soap deodorant to the fragrance is (0.1-0.5):(0.1-0.5), thereby further enhancing the sensory effect of the product.

[0041] According to some further specific embodiments of the present application, the deodorizing composition may further include an antibacterial agent to enhance the antibacterial function of the product.

[0042] According to some further specific embodiments of the present application, the mass ratio of the metal soap deodorant to the antibacterial agent is (0.1-0.5):(0.1-0.5), thereby further enhancing the antibacterial function of the product.

[0043] In the second aspect of the present application, a low-odor polymer material is proposed. According to an embodiment of the present application, the low-odor polymer material includes the deodorizing composition described in the above embodiment. As a result, the deodorizing composition can quickly and permanently remove a variety of odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and its derivatives in the polymer material and the environment. At the same time, the deodorizing composition can also effectively reduce the possibility of oxidation, degradation, cracking, etc. of the polymer material during the process of blending modification, thermoforming, long-term use, etc. to produce odorous substances.

[0044] According to some specific embodiments of the present application, the low-odor polymer material includes polyolefin resin, metal soap deodorant, deodorant activating substance and antioxidant. Among them, the metal soap deodorant can quickly and permanently remove a variety of odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and its derivatives in the polyolefin resin and the environment under the joint activity of the deodorant activating substance and the antioxidant. The antioxidant can effectively reduce the possibility of polyolefin resin materials being oxidized, degraded, cracked, etc. to produce odorous substances during the process of blending modification, thermoforming, long-term use, etc.

[0045] According to some further specific embodiments of the present application, the low-odor polymer material comprises 97.95wt% to 99.78wt% of polyolefin resin, 0.1wt% to 0.5wt% of metal soap deodorant, 0.02wt% to 0.05wt% of deodorant activating substance and 0.1wt% to 0.5wt% of antioxidant. Thus, it can be further ensured that the metal soap deodorant can quickly and permanently remove ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and its derivatives and other odor molecules in the polyolefin resin and the environment under the joint activity of the deodorant activating substance and the antioxidant. It can further ensure that the antioxidant effectively reduces the possibility of polyolefin resin materials producing odorous substances such as oxidation, degradation, and cracking during the processes of blending modification, thermoforming, and long-term use.

[0046] Polyolefin resin is a general term for thermoplastic resins obtained by polymerizing or copolymerizing α-olefins such as ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 4-methyl-1-pentene, and some cycloolefins. Polyolefin resins have the advantages of abundant raw materials, low price, easy processing and molding, and excellent comprehensive performance. They can be widely used in the fields of automotive interiors, automotive exteriors, electrical housings, toys, and daily necessities. Polypropylene (PP) is preferred.

[0047] Polypropylene (PP) can be used for automotive interior and / or exterior materials, and has the characteristics of low density, light volume, wide design space, green environmental protection, excellent performance and low manufacturing cost. The application of polypropylene in automotive exterior decoration is characterized by replacing steel with plastic, which can reduce the weight of the car, improve fuel economy, and also help improve the appearance and comfort of the car. Modified polypropylene PP-TD20 is preferred.

[0048] PP-TD20 includes 80wt.% polypropylene (PP) and 20wt.% talc (Talc). This composite material combines the good processing properties of PP with the high rigidity and low shrinkage of talc, making PP-T20 have high mechanical strength and dimensional stability. At the same time, PP-T20 has the characteristics of high cost performance, low density, excellent heat resistance, chemical corrosion resistance, easy molding and processing, and recycling. Due to its unique properties, PP-T20 can be used to make a variety of products such as automotive interior and exterior trims, electrical housings, toys, and daily necessities. In particular, PP-TD20 material can be used in the manufacture of automotive interior and exterior parts because it can provide good appearance and durability. In terms of automotive interior, PP-TD20 material can be used to manufacture components such as dashboards, door panels, and seat armrests. The high impact resistance and wear resistance of PP-TD20 material make these components more durable in daily use. PP-TD20 material also has good dimensional stability and low shrinkage, which is very important to ensure the precise assembly of automotive interior parts. In addition, PP-TD20 material can also be used to manufacture automotive glove boxes, door panels, vehicle air-conditioning housings, auxiliary instrument panels, pillar panels, and parcel shelf panels.

[0049] In a third aspect of the present application, a method for preparing the low-odor polymer material is proposed. According to an embodiment of the present application, the method comprises:

[0050] S100: mixing a metal soap deodorant, a deodorant activating substance and an antioxidant to obtain a deodorizing composition;

[0051] In this step, the metal soap deodorant, the deodorant activating substance and the antioxidant are premixed so that the metal soap deodorant is effectively activated under the joint action of the deodorant activating substance and the antioxidant, so that the metal soap deodorant can quickly and permanently remove various odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and its derivatives in polyolefin resins and the environment.

[0052] S200: Injection-molding the deodorizing composition and polyolefin resin to obtain the low-odor polymer material.

[0053] In this step, the injection molding mixture refers to mixing the above deodorizing composition and the polyolefin resin in a certain proportion during the injection molding process, and the injection molding process can be realized in an injection molding machine.

[0054] In the embodiments of the present application, the specific method of injection molding mixing is not particularly limited. Manual mixing can be used, that is, the operator manually mixes the raw materials according to the formula and then feeds them into the injection molding machine. Automatic mixing can also be used, that is, an automatic mixing system (including weighing scales, conveyor belts, mixers and other equipment) is used to mix the raw materials and then feed them into the injection molding machine; the automatic mixing system improves production efficiency and product quality and reduces human errors. Online mixing can also be used, that is, mixing is performed directly next to the injection molding machine, and then the mixed raw materials are directly fed into the injection molding machine. This method reduces the material handling and storage links and improves production efficiency and material utilization.

[0055] According to some specific embodiments of the present application, the temperature of the injection molding mixture is 210°C to 240°C, and the time of the injection molding mixture is 2min to 7min. By limiting the temperature and time of the injection molding mixture to the above ranges, it can ensure that the deodorizing composition and the polyolefin resin are fully melt-mixed and the generation of odorous substances can be effectively reduced.

[0056] According to some further specific embodiments of the present application, the injection molding mixture is carried out under an inert atmosphere, thereby effectively preventing the deodorizing composition and the polyolefin resin from being oxidized and degraded during the melt mixing process, thereby further reducing the generation of odorous substances.

[0057] According to some specific embodiments of the present application, the parameters for injection molding the deodorizing composition and the polyolefin resin in an injection molding machine are as follows:

[0058] The melt temperature in the injection molding machine is 210℃~240℃; the temperature of the rear section of the screw of the injection molding machine is 180℃~200℃, the temperature of the middle section of the screw of the injection molding machine is 190℃~210℃, the temperature of the front section of the screw of the injection molding machine is 210℃~220℃, and the nozzle temperature is 220℃. The temperature of the injection mold is 40℃~70℃. The injection pressure is 50MPa~100MPa, and the holding pressure is 40MPa~80MPa.

[0059] According to some other specific embodiments of the present application, before the polyolefin resin is injection molded, the polyolefin resin may be dried at a temperature of 70° C. to 90° C. for a drying time of 2 hours to 4 hours.

[0060] According to the method for preparing low-odor polymer materials in the above embodiment of the present application, the pre-mixed deodorizing composition and polyolefin resin are injection molded and mixed, and the deodorizing composition can quickly and permanently remove a variety of odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and its derivatives in the polyolefin resin material and the environment. At the same time, the deodorizing composition can also effectively reduce the possibility of polyolefin resin materials being oxidized, degraded, cracked, etc. to produce odorous substances during the process of blending modification, thermoforming, long-term use, etc.

[0061] In the fourth aspect of the present application, a low-odor polymer material as described in the above embodiment or a low-odor polymer material prepared by the method described in the above embodiment is proposed for use in automobile interior, automobile exterior, electrical appliance housing, toys and daily necessities. Thus, a variety of odor molecules such as ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and its derivatives in automobile interior, automobile exterior, electrical appliance housing, toys or daily necessities and their environment can be quickly and permanently removed, and at the same time, the possibility of odor substances being generated by oxidation, degradation, cracking, etc. in automobile interior, automobile exterior, electrical appliance housing, toys or daily necessities during long-term use can be effectively reduced.

[0062] In particular, the low-odor polymer material is used in automobile interior and / or automobile exterior, which can quickly and permanently remove ammonia, hydrogen sulfide, trimethylamine, formaldehyde, mercaptan, thioether, isovaleric acid, benzene and its derivatives and other odor molecules in the automobile, thereby improving the user experience. Specifically, the low-odor polymer material can be used in automobile instrument panels, door panels, seat armrests, glove boxes, door guards, vehicle air conditioning housings, auxiliary instrument panels, pillar guards, and parcel shelf guards.

[0063] The embodiments of the present application are described in detail below. It should be noted that the embodiments described below are exemplary and are only used to explain the present application, and should not be construed as limiting the present application. In addition, unless otherwise explicitly stated, all reagents used in the following embodiments are commercially available or can be synthesized according to this article or known methods, and the reaction conditions not listed are also easily available to those skilled in the art.

[0064] Example 1

[0065] This embodiment provides a low-odor polymer material, and the preparation method thereof is as follows:

[0066] 1) Premix a metal soap deodorant zinc ricinoleate (CAS: 13040-19-2), a deodorant activating substance deionized water and an antioxidant 168. The contents of the metal soap deodorant, the deodorant activating substance and the antioxidant are as shown in Table 1 to obtain a deodorant composition.

[0067] 2) The deodorizing composition and the polyolefin resin PP-TD20 (ISO 11469) are fed into an injection molding machine, and the mixture is injection molded under a nitrogen atmosphere to obtain the low-odor polymer material. Before the PP-TD20 is injection molded, the PP-TD20 can be dried at a temperature of 80°C and a drying time of 2 hours. The parameters of the injection molding mixture are as follows: the melt temperature in the injection molding machine is 220°C; the temperature of the rear section of the screw of the injection molding machine is 190°C, the temperature of the middle section of the screw of the injection molding machine is 200°C, the temperature of the front section of the screw of the injection molding machine is 210°C, and the nozzle temperature is 220°C. The temperature of the injection mold is 50°C. The injection pressure is 70MPa, and the holding pressure is 60MPa. The time for injection molding the mixture is 4min.

[0068] Embodiments 2 to 14

[0069] The preparation methods of Examples 2 to 14 are basically the same as those of Example 1, with the differences shown in Table 1.

[0070] Table 1

[0071]

[0072]

[0073] Embodiment 15

[0074] The preparation method of this embodiment 15 is basically the same as that of embodiment 3, except that:

[0075] 1) Premix zinc ricinoleate (CAS: 13040-19-2), deionized water, antioxidant 168 and flavor;

[0076] 2) The content of zinc ricinoleate is 0.3wt%, the content of deionized water is 0.035wt%, the content of antioxidant 168 is 0.3wt%, the content of flavor is 0.1wt%, and the content of PP-TD20 is 99.265wt%.

[0077] Example 16

[0078] The preparation method of this embodiment 16 is basically the same as that of embodiment 3, except that:

[0079] 1) Premix zinc ricinoleate (CAS: 13040-19-2), deionized water, antioxidant 168 and flavor;

[0080] 2) The content of zinc ricinoleate is 0.3wt%, the content of deionized water is 0.035wt%, the content of antioxidant 168 is 0.3wt%, the content of flavor is 0.5wt%, and the content of PP-TD20 is 98.865wt%.

[0081] Embodiment 17

[0082] The preparation method of this embodiment 17 is basically the same as that of embodiment 3, except that:

[0083] 1) premixing zinc ricinoleate (CAS: 13040-19-2), deionized water, antioxidant 168 and antibacterial agent zinc oxide;

[0084] 2) The content of zinc ricinoleate is 0.3wt%, the content of deionized water is 0.035wt%, the content of antioxidant 168 is 0.3wt%, the content of antibacterial agent zinc oxide is 0.1wt%, and the content of PP-TD20 is 99.265wt%.

[0085] Embodiment 18

[0086] The preparation method of this Example 18 is basically the same as that of Example 3, except that:

[0087] 1) premixing zinc ricinoleate (CAS: 13040-19-2), deionized water, antioxidant 168 and antibacterial agent zinc oxide;

[0088] 2) The content of zinc ricinoleate is 0.3wt%, the content of deionized water is 0.035wt%, the content of antioxidant 168 is 0.3wt%, the content of antibacterial agent zinc oxide is 0.5wt%, and the content of PP-TD20 is 98.865wt%.

[0089] Comparative Example 1

[0090] The difference between this comparative example and Example 3 is that no deodorizing composition is added in this comparative example, that is, no metal soap deodorant, deodorant activating substance and antioxidant are added in this comparative example, as shown in Table 1.

[0091] Comparative Example 2

[0092] The difference between this comparative example and Example 3 is that no metal soap deodorant and antioxidant are added in this comparative example, as shown in Table 1.

[0093] Comparative Example 3

[0094] The difference between this comparative example and Example 3 is that in this comparative example, no metal soap deodorant and deodorant activating material are added, as shown in Table 1.

[0095] Comparative Example 4

[0096] The difference between this comparative example and Example 3 is that no antioxidant is added in this comparative example, as shown in Table 1.

[0097] The low-odor polymer materials prepared in Examples 1 to 18 and Comparative Examples 1 to 4 were tested for odor properties, and the results are shown in Table 2.

[0098] Odor test method:

[0099] (1) Sample preparation: First, place 20g of the sample to be tested into a 1L odor bottle. Before placing the sample into the odor bottle, the sample needs to be pre-treated, including cleaning and drying. This is to ensure that the sample will not be affected by external factors during the test.

[0100] (2) Test conditions: 80°C for 2 hours, cool to 65°C before testing.

[0101] (3) Odor evaluation: Odor evaluation is performed by multiple trained evaluators. The evaluators need to compare the odor intensity perceived by their sense of smell with the level of odor intensity representation to determine the odor intensity of the gas to be tested. The testers will evaluate the odor level of the sample on a scale from 1 to 6. The higher the level, the stronger the odor. The odor level in Table 2 is the average of the odor levels obtained by multiple evaluators.

[0102] Table 2

[0103] Odor level Example 1 3.4 Example 2 3.3 Example 3 3.3 Example 4 3.4 Example 5 3.5 Example 6 3.4 Example 7 3.5 Example 8 3.4 Example 9 3.5 Example 10 3.5 Embodiment 11 3.5 Example 12 3.6 Embodiment 13 3.6 Embodiment 14 3.6 Embodiment 15 3.5 Example 16 3.5 Embodiment 17 3.4 Embodiment 18 3.4 Comparative Example 1 3.9 Comparative Example 2 3.9 Comparative Example 3 3.9 Comparative Example 4 3.8

[0104] As can be seen from Table 1, compared with Comparative Example 1, the odor levels of Examples 1 to 18 are significantly reduced, which shows that adding a metal soap deodorant, a deodorant activating substance and an antioxidant to a polyolefin resin can effectively reduce the odor level of the material.

[0105] It can be seen from Table 1 that compared with Comparative Examples 2-4, the odor levels of Examples 1 to 18 are significantly reduced, and the odor levels of Comparative Examples 2-4 are relatively high. It can be seen that only by adding a metal soap deodorant, a deodorant activating substance and an antioxidant to the polyolefin resin at the same time can the odor level of the material be effectively reduced. None of them can be missing.

[0106] As can be seen from Table 1, compared with Example 3, Examples 15 and 16 have higher odor levels, so those skilled in the art can decide whether to add flavors based on whether consumers like the taste of the flavors.

[0107] As can be seen from Table 1, compared with Example 3, the odor levels of Examples 17 and 18 are not much different, but the materials prepared in Examples 17 and 18 have antibacterial effects.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0109] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A deodorizing composition, characterized in that: include: A metal soap deodorant, a deodorant activating substance and an antioxidant, wherein the mass ratio of the metal soap deodorant, the deodorant activating substance and the antioxidant is (0.1-0.5):(0.02-0.05):(0.1-0.5).

2. The deodorizing composition according to claim 1, characterized in that The metal soap deodorant includes at least one of zinc ricinoleate, magnesium ricinoleate, sodium ricinoleate, potassium ricinoleate and zinc ricinoleate.

3. The deodorizing composition according to claim 1, characterized in that The deodorant activating substance includes at least one of water and ethanol.

4. The deodorizing composition according to claim 1, characterized in that The antioxidant includes at least one of phosphite antioxidants, aromatic amine antioxidants, hindered phenol antioxidants and thioester antioxidants.

5. The deodorizing composition according to any one of claims 1 to 4, characterized in that Also includes fragrance.

6. The deodorizing composition according to claim 5, characterized in that The mass ratio of the metal soap deodorant to the essence is (0.1-0.5):(0.1-0.5).

7. The deodorizing composition according to any one of claims 1 to 4, characterized in that Antimicrobial agents are also included.

8. The deodorizing composition according to claim 7, characterized in that The mass ratio of the metal soap deodorant to the antibacterial agent is (0.1-0.5):(0.1-0.5).

9. A low odor polymer material, characterized in that: A deodorizing composition comprising the deodorizing composition according to any one of claims 1 to 8.

10. The low-odor polymer material according to claim 9, characterized in that It includes polyolefin resin, metal soap deodorant, deodorant activating substance and antioxidant.

11. The low-odor polymer material according to claim 10, characterized in that: The invention comprises 97.95 wt% to 99.78 wt% of a polyolefin resin, 0.1 wt% to 0.5 wt% of a metal soap deodorant, 0.02 wt% to 0.05 wt% of a deodorant activating substance and 0.1 wt% to 0.5 wt% of an antioxidant.

12. A method for preparing a low-odor polymer material as claimed in any one of claims 9 to 11, characterized in that: include: Mixing a metal soap deodorant, a deodorant activating substance and an antioxidant to obtain a deodorizing composition; The deodorizing composition and polyolefin resin are mixed by injection molding to obtain the low-odor polymer material.

13. The method according to claim 12, characterized in that The temperature of the injection molding mixture is 210°C to 240°C, and the time of the injection molding mixture is 2min to 7min; And / or, the injection molding of the mixture is carried out under an inert atmosphere.

14. Use of the low-odor polymer material according to any one of claims 9 to 11 or the low-odor polymer material obtained by the method according to claim 12 or 13 in automobile interior decoration, automobile exterior decoration, electrical appliance housing, toys and daily necessities.

Images