CN111204102A - Plastic smooth surface and injection molding process - Google Patents

Plastic smooth surface and injection molding process Download PDF

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Publication number
CN111204102A
CN111204102A CN202010028748.8A CN202010028748A CN111204102A CN 111204102 A CN111204102 A CN 111204102A CN 202010028748 A CN202010028748 A CN 202010028748A CN 111204102 A CN111204102 A CN 111204102A
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China
Prior art keywords
injection molding
layer
injection
plastic
molding process
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Chinese (zh)
Inventor
沈丽
魏芳勇
修立煌
王文玲
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Shenzhen Boyao New Material Co ltd
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Shenzhen Boyao New Material Co ltd
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Priority to CN202010028748.8A priority Critical patent/CN111204102A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/22—Layered products comprising a layer of synthetic resin characterised by the use of special additives using plasticisers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76498—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76531—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76551—Time
    • B29C2945/76561—Time duration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76655—Location of control
    • B29C2945/76658—Injection unit
    • B29C2945/76668—Injection unit barrel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76655—Location of control
    • B29C2945/76732—Mould
    • B29C2945/76735—Mould cavity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76655—Location of control
    • B29C2945/76732—Mould
    • B29C2945/76752—Mould runners, nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76822—Phase or stage of control
    • B29C2945/76859—Injection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/406—Bright, glossy, shiny surface

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a plastic smooth surface and an injection molding process, which comprises a base layer, a sticky layer A, a smooth surface layer, a sticky layer B and a protective layer, wherein the injection molding process comprises the following steps of S1, and a base layer material is prepared; s2, preparing a streamer layer material, S3, preparing a protective layer material, S4: carrying out heat preservation treatment on the material; s5: pretreating an injection molding system; s6: pretreating an injection mold; s7: adding the three materials into corresponding screw cylinders respectively, and heating to a molten state; s8, after die assembly, injecting the base material, the streamer material and the protective layer material into the die cavity in sequence, wherein sticky materials are injected among the materials; s9: and after the injection is finished, performing pressure maintaining, cooling and molding, and demolding to obtain the smooth surface plastic. The injection molding process can greatly improve the injection molding efficiency, and compared with the existing injection molding process, the actual measurement and calculation shorten the injection molding time by 15 percent and greatly improve the production takt.

Description

Plastic smooth surface and injection molding process
Technical Field
The invention relates to the field of material processing, in particular to a plastic smooth surface and an injection molding process.
Background
Injection molding is a method for producing and molding industrial products. The products are generally produced by rubber injection molding and plastic injection molding. The injection molding can be classified into injection molding and die casting.
An injection molding machine (an injection machine or an injection molding machine for short) is a main molding device for making thermoplastic plastics or thermosetting materials into plastic products with various shapes by using a plastic molding die, and the injection molding is realized by the injection molding machine and the die.
Injection molding mainly comprises the following types: 1. rubber injection molding: rubber injection molding is a production method in which rubber is directly injected from a cylinder into a mold for vulcanization. The rubber injection molding has the advantages that: although the method is an intermittent operation, the forming period is short, the production efficiency is high, the blank preparation process is eliminated, the labor intensity is low, and the product quality is excellent.
2. Plastic injection molding: plastic injection molding is a method of producing plastic products by injecting molten plastic into a plastic product mold under pressure, and cooling and molding the plastic product to obtain various plastic parts. There are mechanical injection molding machines that are specifically used for injection molding. The plastic most commonly used today is polystyrene.
3. Molding and injection molding: the resulting shape is often the final product and no further processing is required prior to installation or use as the final product. Many details, such as bosses, ribs, threads, can be formed in a single injection molding operation.
The prior plastic smooth surface has poor effect after injection molding, can not obtain obvious smooth effect, and simultaneously, the prior injection molding process causes longer injection molding time and greatly slows down the production rhythm.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a plastic smooth surface and an injection molding process, and solves the problems.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a plastic flowing light surface, includes basic unit, glues glutinous layer A, flowing light surface course, glues glutinous layer B and inoxidizing coating, the basic unit is the plastic layer, and the main material on plastic layer is polycarbonate resin, polybutylene terephthalate, compound fire retardant stabilizer and emollient, the basic unit upper surface is equipped with the flowing light layer, and flowing light layer main material is alkaline earth aluminosilicate, be equipped with between basic unit and the flowing light layer and glue glutinous layer A, the top on flowing light layer is equipped with the inoxidizing coating, and the main material of inoxidizing coating is polyurethane acrylate oligomer, through gluing glutinous layer B fixed connection between inoxidizing coating and the flowing light layer.
2. The injection molding process of a plastic glazing surface as claimed in claim 1, wherein: comprises the following steps of (a) carrying out,
s1, heating a proper amount of polycarbonate resin and polybutylene terephthalate, heating to 220-230 ℃, fully mixing and stirring, adding a proper amount of compound flame retardant stabilizer and lubricant, fully mixing and stirring for 20-25min to obtain a base material for later use;
s2: adding a proper amount of polyvinyl chloride, a plasticizer and a stabilizer into a mixer, uniformly stirring, weighing pasty slurry for later use, adding alkaline earth metal silicate powder into the pasty slurry, and uniformly stirring to obtain a streamer layer material for later use;
s3: adding phenyl glycidyl ether and acrylic acid into a first reactor according to a molar ratio of 1: 1-1: 1.05, adding a polymerization inhibitor and a catalyst into the first reactor, obtaining an intermediate product A after reaction, adding isophorone diisocyanate which is equal to the intermediate product A in molar amount into the first reactor, reacting to obtain an intermediate product B, adding a mixed solution formed by bisphenol A polyoxyethylene ether and bisphenol A polyoxyethylene ether according to a molar ratio of 1: 1-4: 1 into a second reactor, adding the catalyst, the polymerization inhibitor, hypophosphorous acid and acrylic acid which is equal to the bisphenol A polyoxyethylene ether in molar amount into the second reactor, reacting to obtain an intermediate product C, adding the intermediate product B and the intermediate product C into a third reactor according to an equal molar ratio, uniformly stirring, reacting, and finally adding an active diluent into the third reactor, carrying out reduced pressure distillation, filtering and discharging to obtain a polyurethane acrylate oligomer, namely the protective layer material;
s4: performing material heat preservation treatment, namely performing heat preservation treatment on the prepared base material, the prepared streamer layer material and the prepared protective layer material;
s5: preprocessing an injection molding system, namely heating a screw cylinder in the injection molding system to 240 ℃ and 250 ℃, and heating a hot runner in the injection molding system to 220 ℃ and 230 ℃;
s6: pretreating an injection mold, namely heating a fixed mold in the injection mold to 56-74 ℃, and heating a movable mold to 53-61 ℃;
s7: adding the three materials into corresponding screw cylinders respectively, and heating to a molten state;
s8, after die assembly, injecting the base material, the streamer material and the protective layer material into the die cavity in sequence, wherein sticky materials are injected among the materials;
s9: and after the injection is finished, performing pressure maintaining, cooling and molding, and demolding to obtain the smooth surface plastic.
Preferably, in S1, the polycarbonate resin is bisphenol A polycarbonate, and the polybutylene terephthalate is prepared by esterification of terephthalic acid and 1, 4-butanediol, and has a melting point of 220-230 ℃.
Preferably, in S1, the compound flame retardant consists of 20 mass percent of melamine phosphate, 30 mass percent of decabromodiphenylethane and 50 mass percent of aluminum hydroxide.
Preferably, in S1, the stabilizer is a phosphite triester.
Preferably, in S1, the lubricant is hard fat.
Preferably, in S8, the injection is performed in four stages, the first stage injection pressure being 95kg/cm2The time of this phase is 8 seconds; the injection pressure in the second stage was 85kg/cm2The time of this phase is 4 seconds; the injection pressure of the third stage is 65kg/cm2The time of this phase is 12 seconds; the injection pressure in the fourth stage is 55kg/cm2The time for this phase was 8 seconds.
(III) advantageous effects
The invention provides a plastic smooth surface and an injection molding process. Compared with the prior art, the method has the following beneficial effects:
1. the plastic streamer surface of the invention does not contain any toxic material, is compounded with environmental protection standard, can be used by users at ease, and is more beautiful compared with the prior streamer surface of the same type;
2. the injection molding process can greatly improve the injection molding efficiency, and compared with the existing injection molding process, the actual measurement and calculation shorten the injection molding time by 15 percent and greatly improve the production takt.
Drawings
FIG. 1 is a schematic structural view of a plastic flow surface;
in the figure, 1-base layer, 2-sticky layer A, 3-smooth surface layer, 4-sticky layer B and 5-protective layer.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a technical solution: the utility model provides a plastic flowing light surface, includes basic unit 1, glues glutinous layer A2, flowing light surface course 3, glues glutinous layer B4 and inoxidizing coating 5, basic unit 1 is the plastic layer, and the main material on plastic layer is polycarbonate resin, polybutylene terephthalate, compound fire retardant stabilizer and emollient, 1 upper surface on basic unit is equipped with flowing light layer 3, and 3 main materials on flowing light layer are alkaline earth aluminosilicate, and alkaline earth aluminosilicate can send the streamer when normal condition, be equipped with between basic unit 1 and the flowing light layer 3 and glue glutinous layer A2, glue glutinous layer A2 and play the effect of gluing basic unit 1 and flowing light layer 3, the top on flowing light layer 3 is equipped with inoxidizing coating 5, and the main material of inoxidizing coating 5 is polyurethane acrylate oligomer, through gluing glutinous layer B4 fixed connection between inoxidizing coating 5 and the flowing light layer 3.
An injection molding process of a plastic smooth surface comprises the following steps:
s1, heating a proper amount of polycarbonate resin and polybutylene terephthalate, heating to 220-230 ℃, fully mixing and stirring, adding a proper amount of compound flame retardant stabilizer and lubricant, fully mixing and stirring for 20-25min to obtain a base material for later use;
s2: adding a proper amount of polyvinyl chloride, a plasticizer and a stabilizer into a mixer, uniformly stirring, weighing pasty slurry for later use, adding alkaline earth metal silicate powder into the pasty slurry, and uniformly stirring to obtain a streamer layer material for later use;
s3: adding phenyl glycidyl ether and acrylic acid into a first reactor according to a molar ratio of 1: 1-1: 1.05, adding a polymerization inhibitor and a catalyst into the first reactor, obtaining an intermediate product A after reaction, adding isophorone diisocyanate which is equal to the intermediate product A in molar amount into the first reactor, reacting to obtain an intermediate product B, adding a mixed solution formed by bisphenol A polyoxyethylene ether and bisphenol A polyoxyethylene ether according to a molar ratio of 1: 1-4: 1 into a second reactor, adding the catalyst, the polymerization inhibitor, hypophosphorous acid and acrylic acid which is equal to the bisphenol A polyoxyethylene ether in molar amount into the second reactor, reacting to obtain an intermediate product C, adding the intermediate product B and the intermediate product C into a third reactor according to an equal molar ratio, uniformly stirring, reacting, and finally adding an active diluent into the third reactor, carrying out reduced pressure distillation, filtering and discharging to obtain a polyurethane acrylate oligomer, namely the protective layer material;
s4: performing material heat preservation treatment, namely performing heat preservation treatment on the prepared base material, the prepared streamer layer material and the prepared protective layer material;
s5: preprocessing an injection molding system, namely heating a screw cylinder in the injection molding system to 240 ℃ and 250 ℃, and heating a hot runner in the injection molding system to 220 ℃ and 230 ℃;
s6: pretreating an injection mold, namely heating a fixed mold in the injection mold to 56-74 ℃, and heating a movable mold to 53-61 ℃;
s7: adding the three materials into corresponding screw cylinders respectively, and heating to a molten state;
s8, after die assembly, injecting the base material, the streamer material and the protective layer material into the die cavity in sequence, wherein sticky materials are injected among the materials, the injection is divided into four stages, the injection pressure in the first stage is 95kg/cm2The time of this phase is 8 seconds; the injection pressure in the second stage was 85kg/cm2The time of this phase is 4 seconds; the injection pressure of the third stage is 65kg/cm2The time of this phase is 12 seconds; the injection pressure in the fourth stage is 55kg/cm2At this stageThe time is 8 seconds;
s9: and after the injection is finished, performing pressure maintaining, cooling and molding, and demolding to obtain the smooth surface plastic.
Wherein: the polycarbonate resin in the S1 is bisphenol A polycarbonate, the polybutylene terephthalate is prepared by esterification reaction of terephthalic acid and 1, 4-butanediol, the melting point is 220-230 ℃, the compound flame retardant is composed of melamine phosphate with the mass percentage of 20%, decabromodiphenylethane with the mass percentage of 30% and aluminum hydroxide with the mass percentage of 50%, the stabilizer is tris (2, 4-di-tert-butylphenyl) phosphite, and the lubricant is stearic acid.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a plastic flow plain noodles, includes basic unit (1), glues glutinous layer A (2), smooth surface layer (3), glues glutinous layer B (4) and inoxidizing coating (5), its characterized in that, basic unit (1) is the plastic layer, and the main material on plastic layer is polycarbonate resin, polybutylene terephthalate, compound fire retardant stabilizer and emollient, basic unit (1) upper surface is equipped with smooth layer (3), and smooth layer (3) main material is alkaline earth aluminosilicate, be equipped with glutinous layer A (2) between basic unit (1) and smooth layer (3), the top of smooth layer (3) is equipped with inoxidizing coating (5), and the main material of inoxidizing coating (5) is polyurethane acrylate oligomer, through gluing glutinous layer B (4) fixed connection between inoxidizing coating (5) and smooth layer (3).
2. The injection molding process of a plastic glazing surface as claimed in claim 1, wherein: comprises the following steps of (a) carrying out,
s1, heating a proper amount of polycarbonate resin and polybutylene terephthalate, heating to 220-230 ℃, fully mixing and stirring, adding a proper amount of compound flame retardant stabilizer and lubricant, fully mixing and stirring for 20-25min to obtain a base material for later use;
s2: adding a proper amount of polyvinyl chloride, a plasticizer and a stabilizer into a mixer, uniformly stirring, weighing pasty slurry for later use, adding alkaline earth metal silicate powder into the pasty slurry, and uniformly stirring to obtain a streamer layer material for later use;
s3: adding phenyl glycidyl ether and acrylic acid into a first reactor according to a molar ratio of 1: 1-1: 1.05, adding a polymerization inhibitor and a catalyst into the first reactor, obtaining an intermediate product A after reaction, adding isophorone diisocyanate which is equal to the intermediate product A in molar amount into the first reactor, reacting to obtain an intermediate product B, adding a mixed solution formed by bisphenol A polyoxyethylene ether and bisphenol A polyoxyethylene ether according to a molar ratio of 1: 1-4: 1 into a second reactor, adding the catalyst, the polymerization inhibitor, hypophosphorous acid and acrylic acid which is equal to the bisphenol A polyoxyethylene ether in molar amount into the second reactor, reacting to obtain an intermediate product C, adding the intermediate product B and the intermediate product C into a third reactor according to an equal molar ratio, uniformly stirring, reacting, and finally adding an active diluent into the third reactor, carrying out reduced pressure distillation, filtering and discharging to obtain a polyurethane acrylate oligomer, namely the protective layer material;
s4: performing material heat preservation treatment, namely performing heat preservation treatment on the prepared base material, the prepared streamer layer material and the prepared protective layer material;
s5: preprocessing an injection molding system, namely heating a screw cylinder in the injection molding system to 240 ℃ and 250 ℃, and heating a hot runner in the injection molding system to 220 ℃ and 230 ℃;
s6: pretreating an injection mold, namely heating a fixed mold in the injection mold to 56-74 ℃, and heating a movable mold to 53-61 ℃;
s7: adding the three materials into corresponding screw cylinders respectively, and heating to a molten state;
s8, after die assembly, injecting the base material, the streamer material and the protective layer material into the die cavity in sequence, wherein sticky materials are injected among the materials;
s9: and after the injection is finished, performing pressure maintaining, cooling and molding, and demolding to obtain the smooth surface plastic.
3. The injection molding process of a plastic glazing surface as claimed in claim 2, wherein: in S1, the polycarbonate resin is bisphenol A polycarbonate, and the polybutylene terephthalate is prepared by esterification reaction of terephthalic acid and 1, 4-butanediol, and has a melting point of 220-230 ℃.
4. The injection molding process of a plastic glazing surface as claimed in claim 2, wherein: in S1, the compound flame retardant consists of 20 mass percent of melamine phosphate, 30 mass percent of decabromodiphenylethane and 50 mass percent of aluminum hydroxide.
5. The injection molding process of a plastic glazing surface as claimed in claim 2, wherein: in S1, the stabilizer is a phosphite triester.
6. The injection molding process of a plastic glazing surface as claimed in claim 2, wherein: in S1, the lubricant is hard fat.
7. The injection molding process of a plastic glazing surface as claimed in claim 2, wherein: in S8, the injection is divided into fourThe injection pressure in the first stage is 95kg/cm2The time of this phase is 8 seconds; the injection pressure in the second stage was 85kg/cm2The time of this phase is 4 seconds; the injection pressure of the third stage is 65kg/cm2The time of this phase is 12 seconds; the injection pressure in the fourth stage is 55kg/cm2The time for this phase was 8 seconds.
CN202010028748.8A 2020-01-11 2020-01-11 Plastic smooth surface and injection molding process Pending CN111204102A (en)

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