CN113045883A - Imitation metal material, television middle frame and preparation method thereof - Google Patents
Imitation metal material, television middle frame and preparation method thereof Download PDFInfo
- Publication number
- CN113045883A CN113045883A CN201911381481.4A CN201911381481A CN113045883A CN 113045883 A CN113045883 A CN 113045883A CN 201911381481 A CN201911381481 A CN 201911381481A CN 113045883 A CN113045883 A CN 113045883A
- Authority
- CN
- China
- Prior art keywords
- metal
- middle frame
- television
- television middle
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2455/00—Characterised by the use of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08J2423/00 - C08J2453/00
- C08J2455/02—Acrylonitrile-Butadiene-Styrene [ABS] polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
Abstract
The invention discloses a metal-like material, a television middle frame and a preparation method thereof, wherein the preparation method of the television middle frame comprises the following steps: providing a metal-like material comprising a reinforcing material; and melting and plasticizing the metal-like material, injecting the melted and plasticized metal-like material into a television middle frame mold with the inner surface provided with the wiredrawing lines, performing injection molding treatment on the television middle frame mold, and then opening the mold to obtain the television middle frame. The invention adopts the imitation metal material doped with the reinforcing material as the plastic base material of the television middle frame, and prepares the television middle frame by direct injection molding, and the production process is simple, the efficiency is high, the invention has good imitation metal wiredrawing appearance effect, effectively covers the flow mark and weld line defects, and meets the requirements of testing the mechanical strength and the aging performance of the television.
Description
Technical Field
The invention relates to the technical field of manufacturing of television structural parts, in particular to a metal-like material, a television middle frame and a preparation method thereof.
Background
The liquid crystal display television tends to have a metallized texture, and the front frame of the liquid crystal display television is made of metal materials such as aluminum and stainless steel. The texture, geometric lines and complex and changeable appearance of the metal material give people standing, smoothness and glaring rational feeling and ice-cold and fine touch, improve the external expression grade of the product and are accepted by wide consumers. However, the metal front frame has high density, complex preparation process and high material cost, and limits the large-area popularization.
The spraying-free metal-like material is a novel material which is prepared by adding special pigment, pearl powder, metal powder and the like into resin colloidal particles, modifying the resin colloidal particles by a specific compatible technology and can achieve the metal-like appearance effect after injection molding. At present, the material is gradually applied to the fields of automobiles, white electricity, small household appliances and the like.
Disclosure of Invention
The inventor finds that in the forming process of the existing spraying-free metal-like material, metal powder is easy to be irregularly arranged and stacked under the influence of a complex structure and reinforcing filler, so that appearance defects such as flow marks, welding black lines and the like are generated, most of products produced by the material are plate-shaped and sheet-shaped, the structure is simple, glue is fed at a single point, and the reinforcing filler is not added. The television plastic middle frame is relatively complex in structure and high in requirements on strength and dimensional stability, reinforcing fillers are often added, and glue is fed for multiple points, so that the application difficulty of the metal-like material in the television middle frame is greatly increased.
In view of the defects of the prior art, the invention aims to provide a metal-like material, a television middle frame and a preparation method thereof, and aims to solve the problems that the existing metal-like television middle frame has obvious flow marks and welding lines and is poor in mechanical strength.
The technical scheme of the invention is as follows:
the metal prevention material comprises, by weight, 40-65 parts of polycarbonate, 10-35 parts of acrylonitrile-butadiene-styrene copolymer, 0.5-2 parts of metal powder, 0.5-2 parts of pigment, 5-15 parts of toughening agent, 0.1-1 part of lubricant, 0.1-1 part of antioxidant and 5-16 parts of reinforcing material.
The preparation method of the imitation metal material comprises the following steps:
stirring and mixing metal powder, pigment, lubricant and antioxidant to obtain a primary mixture;
adding polycarbonate, acrylonitrile-butadiene-styrene copolymer, toughening agent and 1/4-1/2 reinforcing material into the primary mixture, and stirring and mixing to obtain a secondary mixture;
and (3) adding the secondary mixture into an extruder in a main feeding mode, adding the rest of the reinforcing materials into the extruder in a side feeding mode, and performing melting and extrusion treatment in the extruder to obtain the metal-like material.
The preparation method of the metal-like material comprises the step of preparing a reinforcing material, wherein the reinforcing material is one or more of glass fibers, mineral fibers and whiskers.
The preparation method of the metal-like material comprises the step of preparing a metal powder, wherein the metal powder is one or more of gold powder, aluminum powder and copper powder.
The preparation method of the metal-like material is characterized in that the weight-average molecular weight of the polycarbonate is 15000-30000 g/mol.
A preparation method of a television middle frame comprises the following steps:
providing a metal-like material comprising a reinforcing material;
and melting and plasticizing the metal-like material, injecting the melted and plasticized metal-like material into a television middle frame mold with the inner surface provided with the wiredrawing lines, performing injection molding treatment on the television middle frame mold, and then opening the mold to obtain the television middle frame.
The preparation method of the television middle frame comprises, by weight, 40-65 parts of polycarbonate, 10-35 parts of acrylonitrile-butadiene-styrene copolymer, 0.5-2 parts of metal powder, 0.5-2 parts of pigment, 5-15 parts of toughening agent, 0.1-1 part of lubricant, 0.1-1 part of antioxidant and 5-16 parts of reinforcing material.
The preparation method of the television middle frame comprises the following steps of injecting the metal-like material after melting and plasticizing into a television middle frame mold with the inner surface provided with the wiredrawing lines:
adding the metal-like material into an injection molding machine for melting and plasticizing, wherein the temperature of the injection molding machine is divided into five sections, wherein the temperature of the first conveying section and the second conveying section is 190-;
and injecting the metal-like material in a molten state into a television middle frame die with the inner surface provided with the drawing lines through a nozzle by adopting a multipoint sequential glue feeding mode.
The preparation method of the television middle frame comprises the following steps of:
a steam pipeline is arranged in a television middle frame mold in advance;
and the injection molding treatment of the television middle frame mold is realized by sequentially introducing and sucking steam into the steam pipeline, so that the temperature of the television middle frame mold is alternately changed at 50-180 ℃.
The invention relates to a television middle frame, which is prepared by the preparation method of the television middle frame.
Has the advantages that: according to the preparation method of the television middle frame, the metal-like material doped with the reinforcing material is used as the plastic base material of the television middle frame, and the television middle frame is prepared in a direct injection molding mode. Compared with a metal middle frame, the television middle frame with the metal imitation effect prepared by the method can reduce the cost by more than 50%; compared with a plastic middle frame with a metal effect obtained by adopting a gold stamping process, the cost of the television middle frame prepared by the method can be reduced by 40-60%; compared with a plastic middle frame with a metal effect obtained by spray painting, the television middle frame prepared by the method disclosed by the invention has the advantage that the cost can be reduced by 20-40%. The spraying-free television middle frame with the metal wire drawing imitating effect, which is prepared by the method, can be applied to various types of television sets by changing the structural design, and has very wide application prospect.
Drawings
Fig. 1 is a flowchart of a method for manufacturing a television middle frame according to an embodiment of the present invention.
FIG. 2 is a flow chart of a preferred embodiment of a method for preparing a metal-like material according to the embodiment of the present invention.
Detailed Description
The invention provides a metal-like material, a television middle frame and a preparation method thereof, and the invention is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, an embodiment of the present invention provides a method for manufacturing a middle frame of a television, which includes the steps of:
s10, providing a metal-like material, wherein the metal-like material comprises a reinforcing material;
s20, injecting the metal-like material after melting and plasticizing into a television middle frame mold with the inner surface provided with the wire drawing lines, performing quick cooling and quick heating treatment on the television middle frame mold, and opening the mold to obtain the television middle frame.
In order to meet the high requirements of the television middle frame on mechanical strength and dimensional stability, the embodiment adopts a metal-like material doped with a reinforcing material as a plastic base material of the television middle frame, and the addition of the reinforcing material can increase the appearance defects of the television middle frame, so that the problems of flow marks and weld lines of the middle frame are easily caused.
The embodiment adopts the metal-like material containing the reinforcing material for direct injection molding, has simple production process, high efficiency and good metal-like wiredrawing appearance effect, and can effectively cover the defects of flow marks and weld lines; the metal-like television middle frame prepared by the embodiment can replace a metal middle frame in a certain range, and the production cost of a product is effectively reduced.
In some embodiments, the metal-like material further comprises, by weight, 40-65 parts of polycarbonate, 10-35 parts of acrylonitrile-butadiene-styrene copolymer, 0.5-2 parts of metal powder, 0.5-2 parts of pigment, 5-15 parts of toughening agent, 0.1-1 part of lubricant, and 0.1-1 part of antioxidant.
In some embodiments, the reinforcing material comprises 9-13% of the total weight of the imitation metal material. In this embodiment, if the ratio of the reinforcing material to the total weight of the imitation metal material is too small (less than 9%), the reinforcing material cannot enhance the mechanical strength of the imitation metal material; if the reinforcing material accounts for too large (more than 13%) of the total weight of the metal-like material, the metal-like material is easy to be brittle, and the metal powder is easy to be obviously irregularly arranged and accumulated, so that the television middle frame made of the metal-like material has obvious flow mark and weld line defects and is not easy to be covered.
In some embodiments, the reinforcing material is selected from one or more of glass fibers, mineral fibers, and whiskers, but is not limited thereto.
In some specific embodiments, when the reinforcing material is glass fiber, the diameter of the glass fiber is less than or equal to 15 μm, the length of the glass fiber is less than or equal to 200 μm, and within the limited range, the surface of the television middle frame made of the metal-like material has no obvious flow mark and weld line defect.
In some specific embodiments, when the reinforcing material is mineral fibers, the diameter of the mineral fibers is less than or equal to 10 μm, the length of the mineral fibers is less than or equal to 100 μm, and within the limited range, the surface of the television middle frame made of the metal-like material has no obvious flow mark and weld line defects.
In some embodiments, the polycarbonate is a bisphenol A polycarbonate having a weight average molecular weight of 15000-30000 g/mol. In some embodiments, the polycarbonate has a melt index of not less than 20g/10min at 300 ℃/1.2 kg.
In some embodiments, the acrylonitrile-butadiene-styrene copolymer is prepared by a bulk polymerization method and has a melt index of not less than 20g/10min at 220 ℃/10 kg.
In some embodiments, the metal powder is one or more of gold powder, aluminum powder, and copper powder, but is not limited thereto. In some specific embodiments, the metal powder is in the form of a flake or sphere having a median particle diameter of 10 to 50um, and the surface thereof is subjected to a nano-coating treatment.
In some embodiments, the pigment is one or more of a monoazo pigment, phthalocyanine, titanium oxide, iron oxide, and carbon black, but is not limited thereto.
In some embodiments, the toughening agent is an acrylate-butadiene-styrene copolymer, but is not limited thereto.
In some embodiments, the lubricant is one or both of N, N' -Ethylene Bis Stearamide (EBS) and pentaerythritol stearate (PETS), but is not limited thereto.
In some embodiments, the antioxidant is one or more of hindered phenols, thiodipropylenediesters, and phosphites, but is not limited thereto.
In some embodiments, there is also provided a method for preparing a metal-like material, as shown in fig. 2, which includes the steps of:
s11, stirring and mixing the metal powder, the pigment, the lubricant and the antioxidant to obtain a primary mixture;
s12, adding polycarbonate, acrylonitrile-butadiene-styrene copolymer, toughening agent and 1/4-1/2 reinforcing material into the primary mixture, and stirring and mixing to obtain a secondary mixture;
and S13, adding the secondary mixture into an extruder in a main feeding mode, adding the rest reinforcing materials into the extruder in a side feeding mode, and performing melting and extrusion treatment in the extruder to obtain the metal-like material.
The metal-like material prepared by the method has better mechanical property due to the doping of the reinforcing material, can meet the requirements of various television models, and has very wide application prospect.
In some embodiments, the extruder is a twin screw extruder with precise temperature control and vacuum venting equipment, with the temperature of the various zones of the screw and die set at 150 ℃ to 300 ℃.
In some embodiments, the step of injecting the metal-like material after melting and plasticizing into a television center mold with an inner surface provided with a wiredrawing pattern comprises: adding the metal-like material into an injection molding machine for melting and plasticizing, wherein the temperature of the injection molding machine is divided into five sections, wherein the temperature of the first conveying section and the second conveying section is 190-; and injecting the metal-like material in a molten state into a television middle frame die with the inner surface provided with the drawing lines through a nozzle by adopting a multipoint sequential glue feeding mode.
In the embodiment, because the metal-like material doped with the reinforcing material is used as the plastic base material of the television middle frame, flow marks and weld line appearance defects are easily generated on the surface of the television middle frame, and therefore the mold wire drawing scheme is adopted to cover the appearance defects on the surface of the television middle frame; specifically, the inner surface of the television middle frame is provided with the wire drawing lines in advance, then the molten metal-like material is injected into the television middle frame mold with the wire drawing lines on the inner surface through the nozzle in a multi-point sequential glue feeding mode, and the television middle frame with the highlight wire drawing effect on the surface is manufactured after injection molding, so that the defects of flow marks and weld lines of the television middle frame are effectively covered. By way of example, the drawing protocols include, but are not limited to, XH170001, XH802, XH920, MY-66760 and MY-66725.
In this embodiment, the multi-point sequential glue feeding means that opening and closing of the mold gate are controlled smoothly, so that the next gate is opened correspondingly after the front material flow reaches the next gate. In the embodiment, the glue is sequentially fed in multiple points, so that the appearance of the manufactured imitation metal middle frame has no obvious welding line. In addition, the glue inlet point is arranged on the non-appearance surface of the television middle frame, so that the flow mark defect of the appearance of the television middle frame can be effectively avoided.
In some embodiments, the glue inlet flow channel is designed in a circular or trapezoidal shape, and the diameter of the glue inlet flow channel is set to be 6-12 mm. The glue is fed into a needle valve type hot runner cold runner and rotary runner, the glue feeding mode is a horn submarine type, and the size diameter of a sprue is 2 mm.
In some embodiments, the step of performing rapid cooling and rapid heating treatment on the television middle frame mold comprises: a steam pipeline is arranged in a television middle frame mold in advance; and steam is sequentially introduced and pumped into the steam pipeline to realize the quick cooling and quick heating treatment of the television middle frame mould, so that the temperature of the television middle frame mould is alternately changed at 50-180 ℃.
In the embodiment, the introduction and the suction of steam are controlled, so that the rapid cooling and rapid heating treatment of the television middle frame mold can be realized, and the problem that thick lines on the surface of the television middle frame float fibers is effectively prevented.
In some embodiments, the invention further provides a television middle frame, wherein the television middle frame is prepared by the preparation method of the television middle frame.
The following explains the preparation method of the television middle frame by specific embodiments:
example 1
Polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), a reinforcing material, metal powder, a pigment, a toughening agent, a dispersing agent and an antioxidant are prepared into the metal-like material according to the weight part ratio. Wherein the metal powder is flake aluminum powder, the median particle size is 16 μm, and the weight ratio is 1%; the reinforcing filler used was glass fiber having an average diameter of 13 μm and an average length of 100. mu.m. And adding the prepared metal-like material into an injection molding machine, carrying out melt plasticization, injecting the material into an injection mold through an injection nozzle in a sequential glue feeding mode, maintaining the pressure, quickly cooling and heating, opening the mold and ejecting to obtain the metal-like middle frame product. Wherein the temperature of each section of the injection molding machine is 190 ℃, 220 ℃, 240 ℃, 240 ℃ and 250 ℃; the temperature of the die is set to be 60 ℃, the time of introducing steam is controlled to be 17s, and the wire drawing line is XH 920.
Example 2
Polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), a reinforcing material, metal powder, a pigment, a toughening agent, a dispersing agent and an antioxidant are prepared into the metal-like material according to the weight part ratio. Wherein the metal powder is flake aluminum powder, the median particle size is 20 μm, and the weight ratio is 1%; the reinforcing filler used was glass fiber having an average diameter of 13 μm and an average length of 150 μm. And adding the prepared metal-like material into an injection molding machine, carrying out melt plasticization, injecting the material into an injection mold through an injection nozzle in a sequential glue feeding mode, maintaining the pressure, quickly cooling and heating, opening the mold and ejecting to obtain the metal-like middle frame product. Wherein the temperature of each section of the injection molding machine is 190 ℃, 220 ℃, 240 ℃, 240 ℃ and 250 ℃; the temperature of the die is set to be 60 ℃, the time of introducing steam is controlled to be 17s, and the wire drawing line is XH 920.
Example 3
Polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), a reinforcing material, metal powder, a pigment, a toughening agent, a dispersing agent and an antioxidant are prepared into the metal-like material according to the weight part ratio. Wherein the metal powder is flake aluminum powder, the median particle size is 20 μm, and the weight ratio is 1%; the reinforcing filler used was mineral fibres with an average diameter of 4 μm and an average length of 80 μm. And adding the prepared metal-like material into an injection molding machine, carrying out melt plasticization, injecting the material into an injection mold through an injection nozzle in a sequential glue feeding mode, maintaining the pressure, quickly cooling and heating, opening the mold and ejecting to obtain the metal-like middle frame product. Wherein the temperature of each section of the injection molding machine is 190 ℃, 220 ℃, 240 ℃, 240 ℃ and 250 ℃; the temperature of the die is set to be 60 ℃, the time of introducing steam is controlled to be 17s, and the wire drawing line is XH 920.
Comparative example 1
Polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), a reinforcing material, metal powder, a pigment, a toughening agent, a dispersing agent and an antioxidant are prepared into the metal-like material according to the weight part ratio. Wherein, the metal powder is spherical aluminum powder, the median diameter is 10 μm, and the weight ratio is 2%; the reinforcing filler used was glass fiber having an average diameter of 13 μm and an average length of 100. mu.m. Adding the prepared metal-like material into an injection molding machine, carrying out melt plasticization, injecting into an injection mold through an injection nozzle, maintaining pressure, rapidly cooling and heating, opening the mold and ejecting to obtain the metal-like middle frame product. Wherein the temperature of each section of the injection molding machine is 190 ℃, 220 ℃, 240 ℃, 240 ℃ and 250 ℃; setting the temperature of the die to be 60 ℃, controlling the time of introducing steam to be 17s, and setting the wire drawing pattern to be XH 920; and a sequential glue feeding mode is adopted.
Comparative example 2
Polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), a reinforcing material, metal powder, pigment, a toughening agent, a dispersing agent and an antioxidant are prepared into the metal-like material according to the weight part ratio. Wherein the metal powder is flake aluminum powder, the median particle size is 16 μm, and the weight ratio is 1%; the reinforcing filler used was glass fiber having an average diameter of 13 μm and an average length of 100. mu.m. Adding the prepared metal-like material into an injection molding machine, carrying out melt plasticization, injecting into an injection mold through an injection nozzle, maintaining pressure, rapidly cooling and heating, opening the mold and ejecting to obtain the metal-like middle frame product. Wherein the temperature of each section of the injection molding machine is 190 ℃, 220 ℃, 240 ℃, 240 ℃ and 250 ℃; setting the temperature of the die to be 60 ℃, controlling the time of introducing steam to be 17s, and setting the wire drawing pattern to be XH 170001; and a sequential glue feeding mode is adopted.
Comparative example 3
Polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), a reinforcing material, metal powder, a pigment, a toughening agent, a dispersing agent and an antioxidant are prepared into the metal-like material according to the weight part ratio. Wherein the metal powder is flake aluminum powder, the median particle size is 16 μm, and the weight ratio is 1%; the reinforcing filler used was glass fiber having an average diameter of 13 μm and an average length of 100. mu.m. Adding the prepared metal-like material into an injection molding machine, carrying out melt plasticization, injecting into an injection mold through an injection nozzle, maintaining pressure, rapidly cooling and heating, opening the mold and ejecting to obtain the metal-like middle frame product. Wherein the temperature of each section of the injection molding machine is 190 ℃, 220 ℃, 240 ℃, 240 ℃ and 250 ℃; setting the temperature of the die to be 60 ℃, controlling the time of introducing steam to be 17s, and ensuring that the die has no wiredrawing lines and has a high-gloss surface; and a sequential glue feeding mode is adopted.
Comparative example 4
Polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), a reinforcing material, metal powder, a pigment, a toughening agent, a dispersing agent and an antioxidant are prepared into the metal-like material according to the weight part ratio. Wherein the metal powder is flake aluminum powder, the median particle size is 16 μm, and the weight ratio is 1%; the reinforcing filler used was glass fiber having an average diameter of 13 μm and an average length of 100. mu.m. Adding the prepared metal-like material into an injection molding machine, carrying out melt plasticization, injecting into an injection mold through an injection nozzle, maintaining pressure, rapidly cooling and heating, opening the mold and ejecting to obtain the metal-like middle frame product. Wherein the temperature of each section of the injection molding machine is 190 ℃, 220 ℃, 240 ℃, 240 ℃ and 250 ℃; setting the temperature of the die to be 60 ℃, controlling the time of introducing steam to be 17s, and setting the wire drawing pattern to be XH 920; adopts a direct glue feeding mode.
Comparative example 5
Polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), a reinforcing material, metal powder, a pigment, a toughening agent, a dispersing agent and an antioxidant are prepared into the metal-like material according to the weight part ratio. Wherein the metal powder is flake aluminum powder, the median particle size is 16 μm, and the weight ratio is 1%; the reinforcing filler used was glass fiber having an average diameter of 14 μm and an average length of 350. mu.m. Adding the prepared metal-like material into an injection molding machine, carrying out melt plasticization, injecting into an injection mold through an injection nozzle, maintaining pressure, rapidly cooling and heating, opening the mold and ejecting to obtain the metal-like middle frame product. Wherein the temperature of each section of the injection molding machine is 190 ℃, 220 ℃, 240 ℃, 240 ℃ and 250 ℃; setting the temperature of the die to be 60 ℃, controlling the time of introducing steam to be 17s, and setting the wire drawing pattern to be XH 920; and a sequential glue feeding mode is adopted.
The results of observing and testing the appearance of the television middle frames obtained in the above examples 1 to 3 and comparative examples 1 to 5 are shown in table 1:
TABLE 1 comparison of part of the components, injection moulding process and appearance of the examples and comparative examples
The results of testing the physical properties of the middle frames of the tv sets obtained in the above examples 1 to 3 are shown in table 2:
TABLE 2 physical Properties of television middle frame prepared in example
The test results in tables 1 and 2 show that the imitation metal television middle frame prepared in this example has the following advantages: the metal-like television middle frame prepared by the embodiment has stronger metal luster, and the wiredrawing effect can better cover the flow mark and weld line defects of the metal-like material; with the increase of the length and the diameter of the glass fiber, the mechanical strength (tensile strength, bending modulus and the like) of the metal-like television middle frame is obviously improved, but the appearance effect of the metal-like television middle frame is gradually reduced; compared with a direct glue feeding mode, the embodiment adopts a sequential glue feeding mode, so that the weld line defect of the middle frame of the metal-like television can be effectively overcome; the appearance defects of the metal-like material can be well covered by the wiredrawing lines on the surface of the metal-like television middle frame in the embodiment, but the appearance defects of the metal-like television middle frame are more obvious the thinner the wiredrawing lines are (the thickness of the wiredrawing lines is XH170001< XH 920).
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. The metal-like material is characterized by comprising, by weight, 40-65 parts of polycarbonate, 10-35 parts of acrylonitrile-butadiene-styrene copolymer, 0.5-2 parts of metal powder, 0.5-2 parts of pigment, 5-15 parts of toughening agent, 0.1-1 part of lubricant, 0.1-1 part of antioxidant and 5-16 parts of reinforcing material.
2. A method for preparing a pseudo-metallic material as defined in claim 1, comprising the steps of:
stirring and mixing metal powder, pigment, lubricant and antioxidant to obtain a primary mixture;
adding polycarbonate, acrylonitrile-butadiene-styrene copolymer, toughening agent and 1/4-1/2 reinforcing material into the primary mixture, and stirring and mixing to obtain a secondary mixture;
and (3) adding the secondary mixture into an extruder in a main feeding mode, adding the rest of the reinforcing materials into the extruder in a side feeding mode, and performing melting and extrusion treatment in the extruder to obtain the metal-like material.
3. The method for preparing the metal-like material according to claim 2, wherein the reinforcing material is one or more of glass fiber, mineral fiber and whisker.
4. The method for preparing the metal-like material according to claim 2, wherein the metal powder is one or more of gold powder, aluminum powder and copper powder.
5. The method for preparing a metal-like material according to claim 2, wherein the weight average molecular weight of the polycarbonate is 15000-30000 g/mol.
6. A preparation method of a television middle frame is characterized by comprising the following steps:
providing a metal-like material comprising a reinforcing material;
and melting and plasticizing the metal-like material, injecting the melted and plasticized metal-like material into a television middle frame mold with the inner surface provided with the wiredrawing lines, performing injection molding treatment on the television middle frame mold, and then opening the mold to obtain the television middle frame.
7. The method for preparing the television middle frame according to claim 6, wherein the metal-like material comprises, by weight, 40-65 parts of polycarbonate, 10-35 parts of acrylonitrile-butadiene-styrene copolymer, 0.5-2 parts of metal powder, 0.5-2 parts of pigment, 5-15 parts of toughening agent, 0.1-1 part of lubricant, 0.1-1 part of antioxidant and 5-16 parts of reinforcing material.
8. The method for manufacturing a television bezel as claimed in any one of claims 6 to 7, wherein said step of injecting said metal-like material after melting and plasticizing into a mold for a television bezel having a drawing line on an inner surface thereof comprises:
adding the metal-like material into an injection molding machine for melting and plasticizing, wherein the temperature of the injection molding machine is divided into five sections, wherein the temperature of the first conveying section and the second conveying section is 190-;
and injecting the metal-like material in a molten state into a television middle frame die with the inner surface provided with the drawing lines through a nozzle by adopting a multipoint sequential glue feeding mode.
9. The method for manufacturing the television middle frame according to any one of claims 6 to 7, wherein the step of performing injection molding on the television middle frame mold comprises the following steps:
a steam pipeline is arranged in a television middle frame mold in advance;
and the injection molding treatment of the television middle frame mold is realized by sequentially introducing and sucking steam into the steam pipeline, so that the temperature of the television middle frame mold is alternately changed at 50-180 ℃.
10. A television middle frame, characterized in that it is made by the method of any one of claims 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911381481.4A CN113045883A (en) | 2019-12-27 | 2019-12-27 | Imitation metal material, television middle frame and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911381481.4A CN113045883A (en) | 2019-12-27 | 2019-12-27 | Imitation metal material, television middle frame and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113045883A true CN113045883A (en) | 2021-06-29 |
Family
ID=76506948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911381481.4A Pending CN113045883A (en) | 2019-12-27 | 2019-12-27 | Imitation metal material, television middle frame and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113045883A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501376A (en) * | 2011-11-02 | 2012-06-20 | 深圳创维－Rgb电子有限公司 | Manufacturing method for large-size, ultra-thin and ultra-narrow shell |
| CN103112096A (en) * | 2012-12-14 | 2013-05-22 | 上海锦湖日丽塑料有限公司 | Method for preparing coating-free aesthetic resin with improved appearance |
| CN104403295A (en) * | 2014-12-17 | 2015-03-11 | 安徽科聚新材料有限公司 | Halogen-free flame-retardant high-gloss inorganic-fiber-reinforced PC/ABS material and preparation method thereof |
| CN106519626A (en) * | 2016-11-08 | 2017-03-22 | 四川长虹电器股份有限公司 | Composite material and preparation method thereof |
| CN108026292A (en) * | 2015-09-11 | 2018-05-11 | 旭玻璃纤维股份有限公司 | Glass-reinforced polypropylene resin combination |
| CN109810462A (en) * | 2018-12-27 | 2019-05-28 | 会通新材料股份有限公司 | A kind of bloom cubic texture material and preparation method thereof |
| CN110591276A (en) * | 2019-09-09 | 2019-12-20 | 珠海格力电器股份有限公司 | Environment-friendly material with similar spraying effect and preparation method thereof |
-
2019
- 2019-12-27 CN CN201911381481.4A patent/CN113045883A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501376A (en) * | 2011-11-02 | 2012-06-20 | 深圳创维－Rgb电子有限公司 | Manufacturing method for large-size, ultra-thin and ultra-narrow shell |
| CN103112096A (en) * | 2012-12-14 | 2013-05-22 | 上海锦湖日丽塑料有限公司 | Method for preparing coating-free aesthetic resin with improved appearance |
| CN104403295A (en) * | 2014-12-17 | 2015-03-11 | 安徽科聚新材料有限公司 | Halogen-free flame-retardant high-gloss inorganic-fiber-reinforced PC/ABS material and preparation method thereof |
| CN108026292A (en) * | 2015-09-11 | 2018-05-11 | 旭玻璃纤维股份有限公司 | Glass-reinforced polypropylene resin combination |
| CN106519626A (en) * | 2016-11-08 | 2017-03-22 | 四川长虹电器股份有限公司 | Composite material and preparation method thereof |
| CN109810462A (en) * | 2018-12-27 | 2019-05-28 | 会通新材料股份有限公司 | A kind of bloom cubic texture material and preparation method thereof |
| CN110591276A (en) * | 2019-09-09 | 2019-12-20 | 珠海格力电器股份有限公司 | Environment-friendly material with similar spraying effect and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 崔继耀等: "《注塑生产质量与成本管理》", 31 July 2008, 国防工业出版社 * |
| 文根保主编: "《复杂注塑模现代设计》", 31 July 2017, 金盾出版社 * |
| 梁耀文等: ""免喷涂材料浅析及在冰箱的应用研究"", 《2017年中国家用电器技术大会论文集》 * |
| 陈鸿南: ""智能产品中塑胶类似金属拉丝的工艺设计方法"", 《中国公共安全》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102250413B (en) | Modified polypropylene composite material of high gloss and low shrinkage and preparation method thereof | |
| EP3789456B1 (en) | Polyamide resin composition having high metal texture and preparation method of polyamide resin composition | |
| CN102443256B (en) | High-heat-resistance polycarbonate (PC)/acrylonitrile styrene acrylate copolymer (ASA) alloy material and preparation method thereof | |
| EP2457946A2 (en) | Synthetic resin composition for metal-like mouldings and an injection moulding method and mouldings employing the same | |
| CN106916445B (en) | One kind is exempted to spray transparent glass fiber reinforced nylon resin material and preparation method thereof | |
| CN105885379A (en) | Scratch-resistant high-gloss spraying-free PC/ASA alloy material and preparation method thereof | |
| CN105623097A (en) | Nanometer-material-compounded long-glass-fiber-reinforced polypropylene material and preparing method thereof | |
| CN101100539A (en) | High glaze polypropylene material and preparation method thereof | |
| CN107226992A (en) | A kind of PC/ABS alloy materials of high shrinkage and preparation method thereof | |
| CN109575557B (en) | PC/ABS mixture for three-dimensional printing, preparation method thereof and direct printing method | |
| CN106543622A (en) | Polyester is as flow improver additive in the purposes for improving enhancing ASA composition glossiness | |
| CN107974020A (en) | A kind of reinforced aromatic vinyl copolymer compositions and its application | |
| CN111363248A (en) | Spraying-free polypropylene composite material for automobile bumper decoration strip and preparation method thereof | |
| CN107964202A (en) | Polyester is improving the purposes of reinforced aromatic vinyl copolymer compositions glossiness as flow improver additive | |
| CN113683876A (en) | Spraying-free high-flow high-impact flame-retardant PC material with metal texture and preparation method and application thereof | |
| CN109722021A (en) | A kind of piano is black, damage resistant nylon material and preparation method thereof | |
| CN111154248A (en) | High-rigidity toughened flame-retardant PC/ABS material and preparation method thereof | |
| CN106566181A (en) | Enhanced ABS composition and application thereof | |
| CN106566158A (en) | Reinforced ASA composition and application thereof | |
| CN113045883A (en) | Imitation metal material, television middle frame and preparation method thereof | |
| CN109503922A (en) | A kind of preparation method of pigment functional agglomerate and products thereof and application | |
| CN110615984A (en) | Low-mold-temperature injection-molded glass fiber reinforced high-temperature nylon and production process thereof | |
| CN112457602B (en) | Super-black high-gloss scratch-resistant ABS (acrylonitrile butadiene styrene) composite as well as preparation method and application thereof | |
| CN103044851B (en) | High-gloss ABS (acrylonitrile-butadiene-styrene) alloy and method for preparing same from matte ABS | |
| CN107722592B (en) | Thermoprinting non-floating fiber high-gloss halogen-free flame-retardant PC/ABS reinforced alloy and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210629 |