Material of washing machine adjusting foot and manufacturing method of washing machine adjusting foot

Abstract

The embodiment of the invention provides a material of a washing machine adjusting foot and a manufacturing method of the washing machine adjusting foot. The material of the adjusting foot of the washing machine comprises the following components in parts by mass: 30-45 parts of grafted modified brominated butyl rubber; 10 to 30 parts by mass of grafted modified SEBS (Styrene-Ethylene-Butylene-Styrene); the mass part of the filler is 25 to 40 parts; 5 to 10 parts by mass of tackifying resin; 1 to 5 parts by mass of cross-linked resin; 1-5 parts by mass of an active agent; 1-3 parts by mass of a vulcanizing agent; 1-3 parts by mass of a processing aid; wherein the total mass part of the components is 100 parts. The technical problem that a traditional washing machine adjusting foot is poor in damping effect is solved.

Description

Technical Field

[0001] The present application relates to the technical field of materials for washing machine adjusting feet, and in particular, to a material for washing machine adjusting feet and a method for manufacturing the washing machine adjusting feet. Background Art

[0002] Existing washing machine adjustment feet are mostly a combination of rubber and metal materials. The rubber is commonly made of butyl rubber, but butyl rubber has a low shock absorption efficiency and requires a high proportion of filler to improve strength, wear resistance, and shock absorption. Furthermore, due to poor mutual adhesion, the butyl rubber must be coated with a special adhesive and pre-baked when bonding to the metal screw base. Otherwise, debonding is likely to occur, and the bonding interface may crack under long-term vibration, causing the foot pad to separate from the base. This situation results in poor wear resistance for current washing machine adjustment feet, and poor shock absorption when the machine is moving at high speeds, affecting the user experience and service life.

[0003] Today's washing machine adjustment feet are mostly made of butyl rubber material, which has poor shock absorption effect when the washing machine is running at high speed, especially in low temperature environment. It is more obvious, noisy and the machine shakes a lot, affecting the user experience and shortening the service life of the washing machine.

[0004] Therefore, the traditional washing machine adjustment feet have poor shock absorption effect, which in turn affects the service life of the washing machine, which is a technical problem that technical personnel in this field urgently need to solve.

[0005] The above information disclosed in the Background section is only for enhancement of understanding of the background of the application and therefore it may contain information that does not form the prior art known to a person of ordinary skill in the art. Summary of the Invention

[0006] The embodiments of the present application provide a material for a washing machine adjusting foot and a method for manufacturing the washing machine adjusting foot to solve the technical problem that the conventional washing machine adjusting foot has a poor shock-absorbing effect.

[0007] According to a first aspect of an embodiment of the present application, a material for adjusting feet of a washing machine is provided, comprising: Graft-modified brominated butyl rubber, 30-45 parts by weight; Graft-modified SEBS, 10-30 parts by mass; Filler, 25-40 parts by mass; Tackifying resin, 5-10 parts by mass; Cross-linked resin, 1-5 parts by mass; Active agent, 1-5 parts by mass; Vulcanizing agent, 1-3 parts by mass; Processing aids, 1-3 parts by mass; The total weight of each component is 100 parts.

[0008] In practice, the grafting monomer used in the graft-modified brominated butyl rubber is one of the following: Maleic anhydride MAH, methyl methacrylate MMA, glycidyl methacrylate GMA, acrylic acid AA, hydroxyethyl acrylate HEA; Among them, the grafting rate of the grafting monomer used in the graft-modified brominated butyl rubber is in the range of greater than or equal to 1.5% and less than or equal to 3.0%; the Mooney viscosity of the grafting monomer used in the graft-modified brominated butyl rubber is in the range of greater than or equal to 40 and less than or equal to 65.

[0009] In practice, when the total mass parts of the brominated butyl rubber are 100 parts, the mass parts of the bromine content are 1.5-2.5 parts.

[0010] In practice, the grafting monomer of the graft-modified SEBS is one of the following: Maleic anhydride MAH, methyl methacrylate MMA, glycidyl methacrylate GMA, acrylic acid AA, hydroxyethyl acrylate HEA; Among them, the grafting rate of the grafting monomer of the grafted modified SEBS is in the range of greater than or equal to 1.0% and less than or equal to 2.5%, the epoxy value is in the range of greater than or equal to 0.4 mmol / g and less than or equal to 1.5 mmol / g, and the melt index is in the range of greater than or equal to 5 g / 10min and less than or equal to 25 g / 10min.

[0011] In practice, the filler is one or more of the following: Carbon black, white carbon black, kaolin, nano calcium carbonate, talc; The tackifying resin is one or more of the following: C5 petroleum resin, C9 petroleum resin, hydrogenated rosin glycerol ester, maleic anhydride modified rosin; The activation temperature range of the tackifying resin is greater than or equal to 90° C. and less than or equal to 120° C. The cross-linking resin is one or more of the following: Alkylphenol-formaldehyde resin, bromomethylphenol-formaldehyde resin; The active agent is one or more of the following: ZnO, MgO, stearic acid.

[0012] During implementation, specifically: 35 parts by weight of brominated butyl rubber grafted with maleic anhydride (MAH); SEBS grafted with maleic anhydride MAH, with a mass fraction of 18 parts; Filler: 20 parts by mass of carbon black and 12 parts by mass of white carbon black; Tackifying resin, 7 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

[0013] During implementation, specifically: 40 parts by weight of brominated butyl rubber grafted with glycidyl methacrylate (GMA); SEBS grafted with glycidyl methacrylate (GMA) has a mass fraction of 15 parts; The filler is 15 parts by mass of carbon black and 16 parts by mass of white carbon black; Tackifying resin, 6 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

[0014] During implementation, specifically: 40 parts by weight of brominated butyl rubber grafted with maleic anhydride (MAH); SEBS grafted with maleic anhydride MAH, with a mass fraction of 15 parts; The filler is composed of 10 parts by mass of carbon black, 10 parts by mass of white carbon black, and 10 parts by mass of nano calcium carbonate; Tackifying resin, 7 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

[0015] During implementation, specifically: 3 parts by weight of brominated butyl rubber grafted with glycidyl methacrylate (GMA); SEBS grafted with glycidyl methacrylate (GMA) has a mass fraction of 12 parts; The filler is composed of 8 parts by weight of carbon black, 10 parts by weight of white carbon black, and 12 parts by weight of nano calcium carbonate; Tackifying resin, 8 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

[0016] During implementation, specifically: 43 parts by weight of brominated butyl rubber grafted with maleic anhydride (MAH); SEBS grafted with maleic anhydride MAH, with a mass fraction of 12 parts; The filler is composed of 10 parts by mass of carbon black, 5 parts by mass of white carbon black, and 15 parts by mass of nano-calcium carbonate; Tackifying resin, 7 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

[0017] During implementation, specifically: 30 parts by weight of brominated butyl rubber grafted with maleic anhydride (MAH); SEBS grafted with maleic anhydride MAH, with a mass fraction of 24 parts; Filler: 20 parts by mass of carbon black and 12 parts by mass of white carbon black; Tackifying resin, 6 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

[0018] According to a second aspect of an embodiment of the present application, a method for manufacturing an adjusting foot of a washing machine adjusting foot material is provided, comprising the following steps: Put the graft-modified brominated butyl rubber into a mixing chamber at a temperature of 80°C or higher and 90°C or lower, and perform mastication for 2-3 minutes; After the mastication is completed, the grafted modified SEBS is added to the mixing chamber for mixing. The mixing speed range is greater than or equal to 40 rpm and less than or equal to 60 rpm. The mixing time range is greater than or equal to 2 minutes and less than or equal to 10 minutes. Then add fillers and some processing aids, the mixing temperature is greater than or equal to 100℃ and less than or equal to 120℃, and the processing is completed after mixing for 5-10 minutes; Then add tackifying resin and cross-linking resin, mix at a temperature of 110°C or higher and 130°C or lower, and mix for 3-5 minutes before processing is complete; Add vulcanizing agent and activating agent, set the molding temperature to 160-180° C., the molding pressure to 5-10 MPa, and the molding time to 5-10 minutes, and mold and cool to produce the washing machine regulating foot.

[0019] The embodiments of the present application adopt the above technical solutions, which have the following technical effects: The material of the washing machine adjustment foot in the embodiment of the present application is based on graft-modified brominated butyl rubber. Bromination improves the rubber's processability and reactivity, resulting in longer C-Br bonds and stronger molecular chain mobility. Graft copolymerization (i.e., graft modification) further increases the molecular chain's steric resistance, enhances the intermolecular friction, improves the damping performance and the material's damping factor (tanδ), thereby enhancing the material's damping and vibration reduction effects. This, in turn, improves the washing machine's damping and vibration reduction performance, enhances the user experience, and extends the machine's service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 This is a flow chart of a method for manufacturing an adjusting foot made of a material for a washing machine adjusting foot according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0022] Example 1

[0023] The materials of the washing machine adjustment feet of the embodiment of the present application include: Graft-modified brominated butyl rubber, 30-45 parts by weight; Graft-modified SEBS, 10-30 parts by mass; Filler, 25-40 parts by mass; Tackifying resin, 5-10 parts by mass; Cross-linked resin, 1-5 parts by mass; Active agent, 1-5 parts by mass; Vulcanizing agent, 1-3 parts by mass; Processing aid, 1-3 parts by mass.

[0024] The total weight of each component is 100 parts.

[0025] The material of the washing machine adjustment foot in the embodiment of the present application is based on graft-modified brominated butyl rubber. Bromination improves the rubber's processability and reactivity, resulting in longer C-Br bonds and stronger molecular chain mobility. Graft copolymerization (i.e., graft modification) further increases the molecular chain's steric resistance, enhances the intermolecular friction, improves the damping performance and the material's damping factor, tanδ, thereby enhancing the material's damping and vibration reduction effects. This in turn improves the washing machine's damping and vibration reduction performance and low-temperature resistance, enhancing the user experience and extending the machine's service life.

[0026] The material of the washing machine adjustment foot is grafted modified SEBS. The presence of benzene rings in SEBS leads to large steric hindrance, making it difficult for the molecular chain to rotate, and can also improve the damping performance of the material. At the same time, graft copolymerization (i.e. graft modification) is used, mainly by introducing polar / rigid groups such as maleic anhydride and hydroxyethyl acrylate, to increase hydrogen bonds and dipole-dipole interactions between molecular chains, increase internal friction, further effectively increase the resistance of the molecular chain and improve shock absorption performance.

[0027] The material of the washing machine adjustment foot has fillers, and small-particle fillers (i.e., fillers) are added. The addition of fillers can increase the internal friction of the material of the washing machine adjustment foot and improve the shock absorption and damping performance.

[0028] Specifically, SEBS uses oil-extended SEBS. Oil-extended SEBS and bromobutyl rubber have similar viscosities and hardness, resulting in excellent process compatibility and improved adaptability in low-temperature environments. Oil-extended SEBS is a modified material obtained by physically mixing oil into SEBS (styrene-ethylene / butylene-styrene block copolymer).

[0029] Specifically, tackifying resins can significantly enhance the damping properties of materials. This mechanism of action stems primarily from their unique molecular properties. Tackifying resins typically have a low molecular weight (only a few hundred). When the ambient temperature rises above their softening point, the tackifying resin melts. In this molten state, the tackifying resin molecules begin to move as complete, long chains. This chain-wide motion requires overcoming greater frictional resistance than the motion of molecular segments, consuming more mechanical energy.

[0030] Specifically, under appropriate cross-linking, the movement of molecular segments of the cross-linked resin is restricted, the spatial resistance becomes larger, and the damping and shock absorption performance can be increased to a certain extent.

[0031] In practice, the grafting monomer used in the graft-modified brominated butyl rubber is one of the following: Maleic anhydride MAH, methyl methacrylate MMA, glycidyl methacrylate GMA, acrylic acid AA, hydroxyethyl acrylate HEA; Among them, the grafting rate of the grafting monomer used in the graft-modified brominated butyl rubber is in the range of greater than or equal to 1.5% and less than or equal to 3.0%; the Mooney viscosity of the grafting monomer used in the graft-modified brominated butyl rubber is in the range of greater than or equal to 40 and less than or equal to 65.

[0032] In practice, when the total mass parts of the brominated butyl rubber are 100 parts, the mass parts of the bromine content are 1.5-2.5 parts.

[0033] In practice, the grafting monomer of the graft-modified SEBS is one of the following: Maleic anhydride MAH, methyl methacrylate MMA, glycidyl methacrylate GMA, acrylic acid AA, hydroxyethyl acrylate HEA; Among them, the grafting rate of the grafting monomer of the grafted modified SEBS is in the range of greater than or equal to 1.0% and less than or equal to 2.5%, the epoxy value is in the range of greater than or equal to 0.4 mmol / g and less than or equal to 1.5 mmol / g, and the melt index is in the range of greater than or equal to 5 g / 10min and less than or equal to 25 g / 10min.

[0034] In practice, the filler is one or more of the following: Carbon black, white carbon black, kaolin, nano calcium carbonate, talc; The tackifying resin is one or more of the following: C5 petroleum resin, C9 petroleum resin, hydrogenated rosin glycerol ester, maleic anhydride modified rosin; The activation temperature range of the tackifying resin is greater than or equal to 90° C. and less than or equal to 120° C. The cross-linking resin is one or more of the following: Alkylphenol-formaldehyde resin, bromomethylphenol-formaldehyde resin; The active agent is one or more of the following: ZnO, MgO, stearic acid.

[0035] Specifically, the graft-modified brominated butyl rubber is selected from one of the following: ExxonMobil Exxpro™ 3433 grafted with MAH, GMA grafted modified ExxonMobil Exxpro™ 3563, Lanxess Bromobutyl XGMA, Japan JSR Co., Ltd. JSR BIIR-g-MAH, Sinopec BIIR-g-AA.

[0036] Different manufacturers or brands may also achieve the above effects.

[0037] Specifically, the graft-modified SEBS is selected from one of the following: The grafting type of Kraton is MAH-grafted FG1901X, and the grafting type is GMA-grafted FG1924X; The grafting types of Japan's Asahi Chemical are MAH-grafted Tuftec M1913 and MAH-grafted Tuftec M1943; LG Chem's grafting type is MAH-grafted LG SEBS-g-MAH; Dow's grafting type is MAH-grafted Infuse™ 9807; Sinopec's grafting type is MAH grafted YH-602, and the grafting type is acrylic acid grafted YH-605.

[0038] Different manufacturers or brands may also achieve the above effects.

[0039] There are many types of fillers, preferably carbon black, white carbon black, kaolin, calcium carbonate, talc, etc. Small particle size fillers are preferred, as they can increase the specific surface area of ​​the material and thus increase the internal friction of the molecules, which is beneficial to improving the damping and shock absorption performance. The following table shows typical technical parameters: Table 1 Types and technical parameters of typical fillers

[0040] The six formulas of materials for the washing machine adjustment feet in this application are as follows: First recipe: 35 parts by weight of brominated butyl rubber grafted with maleic anhydride (MAH); SEBS grafted with maleic anhydride MAH, with a mass fraction of 18 parts; Filler: 20 parts by mass of carbon black and 12 parts by mass of white carbon black; Tackifying resin, 7 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

[0041] Second recipe: 40 parts by weight of brominated butyl rubber grafted with glycidyl methacrylate (GMA); SEBS grafted with glycidyl methacrylate (GMA) has a mass fraction of 15 parts; The filler is 15 parts by mass of carbon black and 16 parts by mass of white carbon black; Tackifying resin, 6 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

[0042] The third recipe: 40 parts by weight of brominated butyl rubber grafted with maleic anhydride (MAH); SEBS grafted with maleic anhydride MAH, with a mass fraction of 15 parts; The filler is composed of 10 parts by mass of carbon black, 10 parts by mass of white carbon black, and 10 parts by mass of nano calcium carbonate; Tackifying resin, 7 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

[0043] The fourth recipe: 3 parts by weight of brominated butyl rubber grafted with glycidyl methacrylate (GMA); SEBS grafted with glycidyl methacrylate (GMA) has a mass fraction of 12 parts; The filler is composed of 8 parts by mass of carbon black, 10 parts by mass of white carbon black, and 12 parts by mass of nano calcium carbonate; Tackifying resin, 8 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

[0044] The fifth recipe: 43 parts by weight of brominated butyl rubber grafted with maleic anhydride (MAH); SEBS grafted with maleic anhydride MAH, with a mass fraction of 12 parts; The filler is composed of 10 parts by mass of carbon black, 5 parts by mass of white carbon black, and 15 parts by mass of nano-calcium carbonate; Tackifying resin, 7 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

[0045] Sixth recipe: 30 parts by weight of brominated butyl rubber grafted with maleic anhydride (MAH); SEBS grafted with maleic anhydride MAH, with a mass fraction of 24 parts; Filler: 20 parts by mass of carbon black and 12 parts by mass of white carbon black; Tackifying resin, 6 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

[0046] The formula of the prior art: Butyl rubber, 60 parts by mass; Filler: 20 parts by mass of carbon black and 20 parts by mass of white carbon black; Active agent, 6 parts by mass; Curing agent, 2 parts by mass; The processing aid comprises 1 part by weight of an accelerator and 1 part by weight of a lubricant.

[0047] Example 2

[0048] like Figure 1 As shown, a method for manufacturing an adjusting foot of a washing machine adjusting foot material according to an embodiment of the present application, using the material of the washing machine adjusting foot in Example 1, includes the following steps: Step S1: putting the graft-modified brominated butyl rubber into a mixing chamber at a temperature of greater than or equal to 80° C. and less than or equal to 90° C. for mastication for 2-3 minutes; Step S2: After the mastication is completed, the grafted modified SEBS is added to the mixing chamber for mixing, the mixing speed is in the range of greater than or equal to 40 rpm and less than or equal to 60 rpm, and the mixing time is in the range of greater than or equal to 2 minutes and less than or equal to 10 minutes; Step S3: Then, fillers and some processing aids are added, and the mixing temperature is greater than or equal to 100° C. and less than or equal to 120° C., and the processing is completed after mixing for 5-10 minutes; Step S4: Then, tackifying resin and cross-linking resin are added, and the mixing temperature is greater than or equal to 110° C. and less than or equal to 130° C., and the processing is completed after mixing for 3-5 minutes; Step S5: adding a vulcanizing agent and an activating agent, setting a molding temperature of 160-180° C., a molding pressure of 5-10 MPa, and a molding time of 5-10 minutes, and forming and cooling the washing machine regulating foot.

[0049] Comparison table of performance parameters of six formulations of materials for washing machine adjustment feet in this application and prior art: Table 2 Comparison of performance parameters of six formulations of materials for adjusting feet of washing machines in this application and prior art

[0050] Through the comparison of the above data, it is found that the formula of the existing technology has a small damping factor and high resilience, so the shock absorption effect is poor.

[0051] The six formulas of this application can significantly improve the damping factor of the material and reduce the rebound rate through material modification, thereby achieving a better shock absorption effect.

[0052] Specifically, SEBS, short for Styrene-Ethylene-Butylene-Styrene Block Copolymer, is a thermoplastic elastomer composed of hard styrene segments and soft ethylene-butylene copolymer segments. This material combines the elasticity of rubber with the processing properties of plastic, offering excellent flexibility, weather resistance, aging resistance, and electrical insulation properties.

[0053] Maleic anhydride (often abbreviated as MAH) is an organic compound with the chemical formula C4H2O3. It is composed of a four-carbon chain with a carboxyl group (-COOH) at each end, connected by a double bond in the middle to form a ring structure.

[0054] Methyl methacrylate (MMA) is an important organic compound with the chemical formula C5H8O2.

[0055] Glycidyl Methacrylate (GMA) is a multifunctional chemical. It is synthesized by the reaction of methacrylic acid and epichlorohydrin, and its molecular formula is C7H 10 O3.

[0056] Acrylic acid (AA) is an unsaturated carboxylic acid with the chemical formula C3H4O2.

[0057] 2-Hydroxyethyl Acrylate (HEA) is a monomer containing hydroxyl and carboxylate groups, with the chemical formula C5H8O3.

[0058] In the description of the present application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0059] In this application and its embodiments, unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0060] In the present application and its embodiments, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0061] The disclosure above provides many different embodiments or examples for realizing the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0062] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0063] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A material for adjusting feet of a washing machine, characterized in that: include: Graft-modified brominated butyl rubber, 30-45 parts by weight; Graft-modified SEBS, 10-30 parts by mass; Filler, 25-40 parts by mass; Tackifying resin, 5-10 parts by mass; Cross-linked resin, 1-5 parts by mass; Active agent, 1-5 parts by mass; Vulcanizing agent, 1-3 parts by mass; Processing aids, 1-3 parts by mass; The total weight of each component is 100 parts.

2. The material of the washing machine adjusting foot according to claim 1, characterized in that: The grafting monomer used in the graft-modified bromobutyl rubber is one of the following: Maleic anhydride MAH, methyl methacrylate MMA, glycidyl methacrylate GMA, acrylic acid AA, hydroxyethyl acrylate HEA; Among them, the grafting rate of the grafting monomer used in the graft-modified brominated butyl rubber is in the range of greater than or equal to 1.5% and less than or equal to 3.0%; the Mooney viscosity of the grafting monomer used in the graft-modified brominated butyl rubber is in the range of greater than or equal to 40 and less than or equal to 65.

3. The material of the washing machine adjusting foot according to claim 2, characterized in that: The grafting monomer of the graft-modified SEBS is one of the following: Maleic anhydride MAH, methyl methacrylate MMA, glycidyl methacrylate GMA, acrylic acid AA, hydroxyethyl acrylate HEA; Among them, the grafting rate of the grafting monomer of the grafted modified SEBS is in the range of greater than or equal to 1.0% and less than or equal to 2.5%, the epoxy value is in the range of greater than or equal to 0.4 mmol / g and less than or equal to 1.5 mmol / g, and the melt index is in the range of greater than or equal to 5 g / 10min and less than or equal to 25 g / 10min.

4. The material of the washing machine adjusting foot according to claim 3, characterized in that: When the total mass parts of the brominated butyl rubber are 100 parts, the mass parts of the bromine content are 1.5-2.5 parts.

5. The material of the washing machine adjusting foot according to claim 4, characterized in that: The filler is one or more of the following: Carbon black, white carbon black, kaolin, nano calcium carbonate, talc; The tackifying resin is one or more of the following: C5 petroleum resin, C9 petroleum resin, hydrogenated rosin glycerol ester, maleic anhydride modified rosin; The activation temperature range of the tackifying resin is greater than or equal to 90° C. and less than or equal to 120° C. The cross-linking resin is one or more of the following: Alkylphenol-formaldehyde resin, bromomethylphenol-formaldehyde resin; The active agent is one or more of the following: ZnO, MgO, stearic acid.

6. The material of the washing machine adjusting foot according to any one of claims 1 to 5, characterized in that: Specifically: 35 parts by weight of brominated butyl rubber grafted with maleic anhydride (MAH); SEBS grafted with maleic anhydride MAH, with a mass fraction of 18 parts; The filler is composed of 20 parts by mass of carbon black and 12 parts by mass of white carbon black; Tackifying resin, 7 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

7. The material of the washing machine adjusting foot according to any one of claims 1 to 5, characterized in that: Specifically: 40 parts by weight of brominated butyl rubber grafted with glycidyl methacrylate (GMA); SEBS grafted with glycidyl methacrylate (GMA) has a mass fraction of 15 parts; Filler: 15 parts by mass of carbon black and 16 parts by mass of white carbon black; Tackifying resin, 6 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

8. The material of the washing machine adjusting foot according to any one of claims 1 to 5, characterized in that: Specifically: 40 parts by weight of brominated butyl rubber grafted with maleic anhydride (MAH); SEBS grafted with maleic anhydride MAH, with a mass fraction of 15 parts; The filler is composed of 10 parts by mass of carbon black, 10 parts by mass of white carbon black, and 10 parts by mass of nano calcium carbonate; Tackifying resin, 7 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

9. The material of the washing machine adjusting foot according to any one of claims 1 to 5, characterized in that: Specifically: 3 parts by weight of brominated butyl rubber grafted with glycidyl methacrylate (GMA); SEBS grafted with glycidyl methacrylate (GMA) has a mass fraction of 12 parts; The filler is composed of 8 parts by weight of carbon black, 10 parts by weight of white carbon black, and 12 parts by weight of nano-calcium carbonate; Tackifying resin, 8 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

10. The material of the washing machine adjusting foot according to any one of claims 1 to 5, characterized in that: Specifically: 43 parts by weight of brominated butyl rubber grafted with maleic anhydride (MAH); SEBS grafted with maleic anhydride MAH, with a mass fraction of 12 parts; The filler is composed of 10 parts by mass of carbon black, 5 parts by mass of white carbon black, and 15 parts by mass of nano calcium carbonate; Tackifying resin, 7 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

11. The material of the washing machine adjusting foot according to any one of claims 1 to 5, characterized in that: Specifically: 30 parts by weight of brominated butyl rubber grafted with maleic anhydride (MAH); SEBS grafted with maleic anhydride MAH, with a mass fraction of 24 parts; Filler: 20 parts by mass of carbon black and 12 parts by mass of white carbon black; Tackifying resin, 6 parts by mass; Cross-linked resin, 3 parts by mass; Active agent, 3 parts by mass; Curing agent, mass part is 1 part; The processing aids include 0.5 parts by weight of an accelerator and 0.5 parts by weight of a lubricant.

12. A method for manufacturing an adjusting foot of a washing machine using the adjusting foot material according to any one of claims 1 to 11, characterized in that: The steps include: Put the graft-modified brominated butyl rubber into a mixing chamber at a temperature of 80°C or higher and 90°C or lower, and perform mastication for 2-3 minutes; After the mastication is completed, the grafted modified SEBS is added to the mixing chamber for mixing. The mixing speed range is greater than or equal to 40 rpm and less than or equal to 60 rpm. The mixing time range is greater than or equal to 2 minutes and less than or equal to 10 minutes. Then add fillers and some processing aids, the mixing temperature is greater than or equal to 100℃ and less than or equal to 120℃, and the processing is completed after mixing for 5-10 minutes; Then add tackifying resin and cross-linking resin, mix at a temperature of 110°C or higher and 130°C or lower, and mix for 3-5 minutes before processing is complete; Add vulcanizing agent and activating agent, set the molding temperature to 160-180° C., the molding pressure to 5-10 MPa, and the molding time to 5-10 minutes, and mold and cool to produce the washing machine regulating foot.

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