Material for manufacturing refrigerator liner plate, refrigerator liner and refrigerator

Abstract

The invention relates to the technical field of refrigerator inner container production, and discloses a material for manufacturing a refrigerator inner container plate, the material comprises PETG, aluminum powder and a modified material, and the modified material comprises PCTG, a flexibilizer, an antioxidant, an auxiliary antioxidant, a lubricant and a weather-proof agent. In the application, the impact strength and heat resistance of the plate can be improved, the yield of the refrigerator liner is improved, and the production cost is reduced. The invention further discloses a refrigerator inner container and a refrigerator.

Description

Technical Field

[0001] The present application relates to the technical field of refrigerator liner production, and in particular to a material for making a refrigerator liner plate, a refrigerator liner and a refrigerator. Background Art

[0002] At present, the inner tanks of high-end refrigerators, wine cabinets, living rooms and bars on the market are gradually transitioning to dark colors such as black or gray. Dark inner tank products are close to metal in color, have a high-end texture, and are resistant to dirt and easy to clean, which has gradually become an industry development trend. However, during the molding and assembly process, dark inner tanks are very likely to turn partially white when subjected to external forces such as stretching, bending, and impact, which not only affects the appearance of the refrigerator, but also causes the inner tank to have poor stress crack resistance, resulting in an increase in product scrap rate and manufacturing costs.

[0003] In the related art, there is an inner liner sheet formed by vacuum forming an ABS (Acrylonitrile-butdiene-styrene) sheet. When used as a refrigerator inner liner, it has the ability to significantly improve stress whitening resistance without affecting tensile strength and elongation at break.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The impact strength and heat resistance of refrigerator liners made of ABS sheets are poor, which causes the refrigerator liners to easily crack and deform due to heat when complex structures are formed, resulting in a decrease in the yield of the refrigerator liners and an increase in production costs.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a material for making a refrigerator liner plate, a refrigerator liner, and a refrigerator, so as to improve the impact strength and heat resistance of the plate, improve the yield of the refrigerator liner, and reduce the production cost.

[0009] In some embodiments, the material used to make the refrigerator liner sheet includes PETG [Poly (ethyleneterephthalateco-1, 4-cylclohexylenedimethylene terephthalate)], aluminum powder and modified materials, wherein the modified materials include: PCTG [Poly (1, 4-Cyclohexylene Dimethylene TerephthalateGlycol)], toughening agent, antioxidant, auxiliary antioxidant, lubricant and weathering agent.

[0010] Optionally, the composition includes, by weight: 50-60 parts of PETG, 2-6 parts of aluminum powder, and 34-48 parts of modified materials.

[0011] Optionally, the modified material includes, by weight: 30-40 parts of PCTG, 3-6 parts of toughening agent, 0.1-0.3 parts of antioxidant, 0.2-0.4 parts of auxiliary antioxidant, 0.3-0.4 parts of lubricant, and 0.4-0.9 parts of weathering agent.

[0012] Optionally, the toughening agent is SEBS (Styrene Ethylene Butylene Styrene).

[0013] Optionally, the antioxidant is antioxidant 1010 , and the secondary antioxidant is secondary antioxidant 168 .

[0014] Optionally, the lubricant is pentaerythritol stearate.

[0015] Optionally, the weathering agent is light stabilizer 770 or light stabilizer 480.

[0016] In some embodiments, a refrigerator liner includes: the material for making a refrigerator liner sheet material of the above embodiment.

[0017] Optionally, the refrigerator liner has a surface layer and a bottom layer, the surface layer is made of PETG material; the bottom layer is made of the material used to make the refrigerator liner sheet material in the above embodiment; wherein the thickness of the surface layer and the bottom layer are the same.

[0018] In some embodiments, a refrigerator comprises: the refrigerator liner of the above embodiment.

[0019] The material for manufacturing a refrigerator liner plate, a refrigerator liner, and a refrigerator provided in the embodiments of the present disclosure can achieve the following technical effects:

[0020] By adding modified materials to PETG and aluminum powder, the impact resistance and heat resistance of the plate can be improved. The refrigerator liner produced by the material used to make refrigerator liner plate has significantly improved impact strength and heat resistance. When performing complex structure molding and foaming, the yield rate is improved and the production cost is reduced. The refrigerator liner has a surface layer and a bottom layer of the same thickness. The surface layer is made of PETG material and has a light-transmitting effect. The bottom layer is made of the material used to make refrigerator liner plate. The elongation at break and impact strength are further improved, so that the mechanical properties of the refrigerator liner are better and the risk of cracking caused by mechanical stress is reduced.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a schematic diagram of the surface layer and bottom layer of the refrigerator liner provided by an embodiment of the present disclosure;

[0024] Figure 2 It is a schematic diagram of the width and depth of the processed notch of the refrigerator inner tank provided in the embodiment of the present disclosure.

[0025] Reference numerals:

[0026] 100, surface layer; 200, bottom layer. DETAILED DESCRIPTION

[0027] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0028] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate to describe the disclosed embodiments herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0029] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements, or components to have specific directions, or to be constructed and operated in specific directions. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0030] In addition, the terms "disposed", "connected" and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0031] Unless otherwise stated, the term "plurality" means two or more.

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0033] In some embodiments, the material used to make the refrigerator liner sheet includes PETG, aluminum powder and modified materials, wherein the modified materials include: PCTG, toughening agent, antioxidant, auxiliary antioxidant, lubricant and weathering agent.

[0034] By using the material for making a refrigerator liner plate provided by the embodiment of the present disclosure, the impact resistance and heat resistance of the plate can be improved by adding a modified material to PETG and aluminum powder. The refrigerator liner produced by the material for making a refrigerator liner plate has significantly improved impact strength and heat resistance, and when performing complex structure molding and foaming, the yield rate is improved, reducing production costs.

[0035] Optionally, by weight, it includes: 50-60 parts of PETG, 2-6 parts of aluminum powder, and 34-48 parts of modified material. In this way, by adjusting the proportion of PETG, aluminum powder and modified material, the impact strength and heat resistance of the obtained plate are improved, and the production cost is controlled.

[0036] In the embodiment of the present disclosure, the added amount of aluminum powder accounts for a relatively small proportion, and the addition of aluminum powder can make the appearance of the obtained plate metallic and have a covering effect; the added amount of modified material accounts for a relatively large proportion, and the addition of modified material can significantly improve the impact strength and heat resistance of the obtained plate.

[0037] Optionally, the modified material includes, by weight: 30-40 parts of PCTG, 3-6 parts of toughening agent, 0.1-0.3 parts of antioxidant, 0.2-0.4 parts of auxiliary antioxidant, 0.3-0.4 parts of lubricant, and 0.4-0.9 parts of weathering agent. In this way, by adjusting the proportion of each component in the modified material, the impact strength and heat resistance of the obtained board are significantly improved, which meets the molding requirements of complex structures and makes the board less prone to cracking and thermal deformation.

[0038] In the disclosed embodiment, the addition amount of PCTG accounts for a relatively large proportion. The addition of PCTG can make the obtained sheet material not need to be pre-dried before the thermoforming process, so that the molding cycle of the sheet material is shortened, the temperature is reduced, and the yield rate is higher. The addition amount of the toughening agent accounts for a relatively small proportion. The addition of the toughening agent improves the heat resistance and aging resistance of the obtained sheet material. The addition amount of the weathering agent accounts for a relatively small proportion. The addition of the weathering agent makes the obtained sheet material have long-term light stability and improved weather resistance. The addition amount of the lubricant accounts for a relatively small proportion. The addition of the lubricant makes the surface finish of the obtained sheet material better. The addition amount of the antioxidant accounts for a relatively small proportion. The addition of the antioxidant makes the obtained sheet material have better antioxidant properties. The addition amount of the auxiliary antioxidant accounts for a relatively small proportion. The addition of the auxiliary antioxidant makes the obtained sheet material have good resistance to thermal degradation.

[0039] Optionally, the toughening agent is SEBS. In this way, SEBS has excellent aging resistance, has both plasticity and high elasticity, and the plate obtained by adding SEBS has good weather resistance, heat resistance, compression deformation resistance and excellent mechanical properties.

[0040] Optionally, the antioxidant is antioxidant 1010, and the secondary antioxidant is secondary antioxidant 168. In this way, antioxidant 1010 is a polyhedral hindered phenol type antioxidant, which has good compatibility with most polymers. The sheet obtained by adding antioxidant 1010 has good anti-discoloration performance caused by light and heat. After compounding with hindered phenol, secondary antioxidant 168 can obtain a better compounding effect, which can effectively prevent the thermal degradation of polypropylene and polyethylene in basic injection molding, provide additional long-term protection for polymers, and improve the thermal stability of the sheet.

[0041] Optionally, the lubricant is pentaerythritol stearate. In this way, pentaerythritol stearate has good thermal stability and low volatility at high temperatures, good demoulding and flow properties, and has an excellent nucleation effect on partially crystalline plastics. Due to its outstanding thermal stability, pentaerythritol stearate is added during the production process of the sheet material, so that the sheet material is not easy to degrade, and the obtained sheet material can significantly improve transparency and surface finish.

[0042] Optionally, the weathering agent is light stabilizer 770 or light stabilizer 480. Thus, the addition of light stabilizer 770 or light stabilizer 480 enables the obtained sheet to have a good effect of preventing ultraviolet degradation.

[0043] In a specific embodiment, the material used to make the refrigerator liner plate includes, by weight: 54.7 parts of PETG, 4 parts of aluminum powder, 35 parts of PCTG, 5 parts of toughening agent, 0.2 parts of antioxidant, 0.3 parts of auxiliary antioxidant, 0.3 parts of lubricant, and 0.5 parts of weathering agent.

[0044] In the embodiments of the present disclosure, the elongation at break, impact strength and heat resistance of the sheet are improved by controlling the added amount of each component to a moderate value and appropriately increasing the added amount of the modified material.

[0045] The mechanical properties of the plate obtained by using the modified material in the embodiment of the present disclosure were tested, and the results of comparison with the plate obtained by using the material before modification are shown in Table 1:

[0046] Table 1

[0047]

[0048] It can be understood that the material before modification includes 96 parts of PETG and 4 parts of aluminum powder; the material after modification includes 54.7 parts of PETG, 4 parts of aluminum powder, 35 parts of PCTG, 5 parts of toughening agent, 0.2 parts of antioxidant, 0.3 parts of auxiliary antioxidant, 0.3 parts of lubricant, and 0.5 parts of weathering agent.

[0049] It can be seen that in the embodiments of the present invention, the tensile strength, flexural strength and flexural modulus of the plate obtained by the modified material are not significantly changed compared with the plate obtained by the material before modification, but the elongation at break, impact strength and heat deformation temperature are significantly improved. The impact strength is increased from the original 85 J / m to about 115 J / m, and the heat resistance is increased from about 65°C to about 73°C.

[0050] In another specific embodiment, the material used to make the refrigerator liner plate includes, by weight: 60 parts of PETG, 6 parts of aluminum powder, 30 parts of PCTG, 3 parts of toughening agent, 0.1 parts of antioxidant, 0.2 parts of auxiliary antioxidant, 0.3 parts of lubricant, and 0.4 parts of weathering agent.

[0051] In the embodiments of the present disclosure, the elongation at break, impact strength and heat resistance of the sheet are improved by controlling the added amounts of PETG and aluminum powder to the highest standard and the added amount of modified materials to the lowest standard, and by increasing the added amount of raw materials and reducing the added amount of modified materials.

[0052] The mechanical properties of the plate obtained by using the modified material in the embodiment of the present disclosure were tested, and the results of the comparison with the plate obtained by using the material before the modification are shown in Table 2:

[0053] Table 2

[0054]

[0055] It can be understood that the material before modification includes 96 parts of PETG and 4 parts of aluminum powder; the material after modification includes 60 parts of PETG, 6 parts of aluminum powder, 30 parts of PCTG, 3 parts of toughening agent, 0.1 parts of antioxidant, 0.2 parts of auxiliary antioxidant, 0.3 parts of lubricant, and 0.4 parts of weathering agent.

[0056] It can be seen that in the disclosed embodiments, the tensile strength, flexural strength and flexural modulus of the plate obtained by the modified material are not significantly changed compared with the plate obtained by the material before modification, but the elongation at break, impact strength and heat deformation temperature are significantly improved, and the mechanical uniformity of the plate is better. The difference in test results of different components is narrowed, the impact strength is increased from the original 85 J / m to about 117 J / m, and the heat resistance is increased from about 65°C to about 75°C.

[0057] In another specific embodiment, the material used to make the refrigerator liner plate includes, by weight: 50 parts of PETG, 2 parts of aluminum powder, 40 parts of PCTG, 6 parts of toughening agent, 0.3 parts of antioxidant, 0.4 parts of auxiliary antioxidant, 0.4 parts of lubricant, and 0.9 parts of weathering agent.

[0058] In the embodiments of the present disclosure, the elongation at break, impact strength and heat resistance of the sheet are improved by controlling the added amounts of PETG and aluminum powder to the minimum standard and the added amount of modified materials to the maximum standard, by reducing the added amount of raw materials and increasing the added amount of modified materials.

[0059] The mechanical properties of the plate obtained by using the modified material in the embodiment of the present disclosure were tested, and the results of the comparison with the plate obtained by using the material before modification are shown in Table 3:

[0060] Table 3

[0061]

[0062] It can be understood that the material before modification includes 96 parts of PETG and 4 parts of aluminum powder; the material after modification includes: 50 parts of PETG, 2 parts of aluminum powder, 40 parts of PCTG, 6 parts of toughening agent, 0.3 parts of antioxidant, 0.4 parts of auxiliary antioxidant, 0.4 parts of lubricant, and 0.9 parts of weathering agent.

[0063] It can be seen that in the disclosed embodiments, the tensile strength, flexural strength and flexural modulus of the plate obtained by the modified material are not significantly changed compared with the plate obtained by the material before modification, but the elongation at break, impact strength and heat deformation temperature are significantly improved, and the mechanical uniformity of the plate is relatively reduced. The test results of different components vary greatly. The impact strength is increased from the original 85 J / m to about 113 J / m, and the heat resistance is increased from about 65°C to about 78°C.

[0064] It can be understood that when the material in any of the above embodiments is used to obtain the plate, the plate is extruded by a screw extruder, which will not be described in detail here.

[0065] Combination Figure 1 and Figure 2 As shown, in some embodiments, a refrigerator liner includes: the material for making a refrigerator liner sheet material of the above-mentioned embodiment.

[0066] The refrigerator liner provided by the embodiment of the present disclosure has a surface layer 100 and a bottom layer 200 of the same thickness. The surface layer 100 is made of PETG material and has a light-transmitting effect. The bottom layer 200 is made of the material used to make the refrigerator liner plate. The elongation at break and the impact strength are further improved, so that the mechanical properties of the refrigerator liner are better and the risk of cracking caused by mechanical stress is reduced.

[0067] Alternatively, if Figure 1 As shown, the refrigerator liner has a surface layer 100 and a bottom layer 200, the surface layer 100 is made of PETG material; the bottom layer 200 is made of the material used to make the refrigerator liner sheet in the above embodiment; wherein, the thickness of the surface layer 100 and the bottom layer 200 are the same. In this way, the refrigerator liner is divided into a surface layer 100 and a bottom layer 200, the surface layer 100 is made of PETG material, so that it has a transparent effect and forms a better appearance effect, and the bottom layer 200 is made of the modified material used to make the refrigerator liner sheet in the above embodiment. The elongation at break of the refrigerator liner can be maintained at more than 85% compared with the retention rate of pure raw materials, and the impact strength retention rate is more than 80%, which meets the mechanical requirements and can effectively reduce the risk of cracking of the refrigerator liner due to mechanical stress after molding.

[0068] The width-to-depth ratio of the refrigerator liner made of the material before the modification can be as small as 2. The width-to-depth ratio of the refrigerator liner made of the modified material for making the refrigerator liner plate of the above embodiment can be as small as 1, that is, the width and depth of the notch can be processed to the same value. Compared with the refrigerator liner made of the material before the modification, it is easier to meet the requirements of complex structure molding and is not easy to crack.

[0069] like Figure 2 As shown, W is the width, D is the depth, and the aspect ratio is 1, that is, W equals D.

[0070] In the disclosed embodiment, when obtaining the plate material for producing the refrigerator liner, a double-layer co-extrusion molding technology is used to extrude the plate material, and the surface layer 100 and the bottom layer 200 are co-extruded to form the plate material. The formed plate material has a highly perspective three-dimensional effect.

[0071] In some embodiments, a refrigerator comprises: the refrigerator liner of the above embodiment.

[0072] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A material for making a refrigerator liner plate, characterized in that: It includes PETG, aluminum powder and modified materials, wherein the modified materials include: PCTG, toughening agent, antioxidant, auxiliary antioxidant, lubricant and weathering agent.

2. The material for making a refrigerator liner sheet according to claim 1, characterized in that: In parts by weight, it comprises: 50-60 parts of PETG, 2-6 parts of aluminum powder, and 34-48 parts of modified materials.

3. The material for making a refrigerator liner sheet material according to claim 2, characterized in that: The modified material comprises, by weight, 30-40 parts of PCTG, 3-6 parts of toughening agent, 0.1-0.3 parts of antioxidant, 0.2-0.4 parts of auxiliary antioxidant, 0.3-0.4 parts of lubricant, and 0.4-0.9 parts of weathering agent.

4. The material for making a refrigerator liner sheet according to any one of claims 1 to 3, characterized in that: The toughening agent is SEBS.

5. The material for making a refrigerator liner sheet material according to any one of claims 1 to 3, characterized in that: The antioxidant is antioxidant 1010, and the auxiliary antioxidant is auxiliary antioxidant 168.

6. The material for making a refrigerator liner sheet according to any one of claims 1 to 3, characterized in that: The lubricant is pentaerythritol stearate.

7. The material for making a refrigerator liner sheet according to any one of claims 1 to 3, characterized in that: The weathering agent is light stabilizer 770 or light stabilizer 480.

8. A refrigerator liner, characterized in that: include: A material for making a refrigerator liner sheet as claimed in any one of claims 1 to 7.

9. The refrigerator liner according to claim 8, characterized in that: The refrigerator liner has a surface layer and a bottom layer, the surface layer is made of PETG material; the bottom layer is made of the material for making a refrigerator liner sheet material according to any one of claims 1 to 7; Among them, the thickness of the surface layer and the bottom layer is the same.

10. A refrigerator, characterized in that: include: A refrigerator liner as claimed in any one of claims 8 to 9.

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