CN113022072A - Spraying-free hollow plate with texture on surface and preparation method thereof - Google Patents

Spraying-free hollow plate with texture on surface and preparation method thereof Download PDF

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Publication number
CN113022072A
CN113022072A CN202110389296.0A CN202110389296A CN113022072A CN 113022072 A CN113022072 A CN 113022072A CN 202110389296 A CN202110389296 A CN 202110389296A CN 113022072 A CN113022072 A CN 113022072A
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China
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layer
particles
spraying
free hollow
organic resin
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Chinese (zh)
Inventor
刘应
陈增军
宋治乾
高蕾
于号
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Shanghai Pincheng Holding Group Co Ltd
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Shanghai Pincheng Holding Group Co Ltd
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Priority to CN202110389296.0A priority Critical patent/CN113022072A/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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/06—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions for securing layers together; for attaching the product to another member, e.g. to a support, or to another product, e.g. groove/tongue, interlocking
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D169/00—Coating compositions based on polycarbonates; Coating compositions based on derivatives of polycarbonates
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/536—Hardness
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/584—Scratch resistance
    • 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
    • B32B2307/70—Other properties
    • B32B2307/71—Resistive to light or to UV

Abstract

The invention discloses a spraying-free hollow plate with a texture surface and a preparation method thereof. The surface layer is composed of organic resin, lubricant, heat stabilizer, ultraviolet stabilizer, toner, titanium dioxide, magnesium silicate particles and borosilicate particles. The spraying-free hollow plate is continuously produced through the particle size distribution and the phase state design of the material to form a surface texture structure, so that the spraying link is directly omitted, and the pollution emission of the spraying link is eliminated. The invention carries out the fusion of molecular scale through the interfaces of different layer materials, thereby greatly improving the adhesive force of surface texture. According to the invention, the high-concentration ultraviolet stabilizer is added in the surface texture layer and the UV layer, so that harmful ultraviolet rays are completely shielded, and the life cycle of the plate and the surface texture layer is greatly prolonged. The surface particles of the spraying-free hollow plate have higher hardness and rigidity, so that the scratch resistance of the surface of the plate can be effectively improved.

Description

Spraying-free hollow plate with texture on surface and preparation method thereof
Technical Field
The invention belongs to the technical field of hollow plates, and particularly relates to a spraying-free hollow plate with a texture surface and a preparation method thereof.
Background
The surface of the aromatic polycarbonate hollow plate known in the prior art is a high-gloss smooth surface, light rays are specular reflection, the surface has no texture, aesthetic value cannot be shown, and the defect of easy scratching exists. Hollow sheets used as decorative materials for interior decoration, curtain walls, roofs, etc. often require surface printing and painting processes to achieve the desired appearance, such as graininess, to reduce specular reflection of light. All the techniques known so far relating to hollow panels have the following obvious drawbacks: poor scratch resistance, poor weather resistance, insufficient long-term adhesion, easy shedding of the coating, serious pollution in the spraying process and unsuitability for outdoor use. In addition, in the prior art, a hollow plate is directly extruded by adopting a die with a concave-convex structure on the surface to prepare a plate with textures on the surface, but the textures prepared by the method are only line textures along the extrusion direction, and due to the limitation of process conditions, the depths of the textures are very limited, so that the die is easy to block and is difficult to clean.
Disclosure of Invention
The invention provides a spraying-free hollow plate with a textured surface and a preparation method thereof, aiming at overcoming the defects in the prior art.
The invention is realized by the following technical scheme: the invention discloses a spraying-free hollow plate with a texture on the surface, which consists of a surface layer, a UV layer and a main body layer, wherein the UV layer is arranged between the surface layer and the main body layer; the hollow plate is divided into a single-surface layer hollow plate and a double-surface layer hollow plate, the single-surface layer hollow plate is of a three-layer structure, a UV layer is arranged below the surface layer, and a main body layer is arranged below the UV layer; the double-surface-layer hollow plate is of a five-layer structure and sequentially comprises a surface layer, a UV layer, a main body layer, a UV layer and a surface layer from top to bottom;
the surface layer is a composite material layer with uniform thickness and is formed by the alternate distribution of materials with different grain diameters to form a surface texture structure; the components of the surface layer comprise organic and inorganic mixtures with different particle size distributions and different thermodynamic properties; the surface layer is composed of the following raw materials in parts by weight: 60 to 95 portions of organic resin, 0.1 to 0.5 portion of lubricant, 0.1 to 0.5 portion of heat stabilizer, 0.5 to 20 portions of ultraviolet stabilizer, 0.01 to 1 portion of toner, 0.5 to 10 portions of titanium dioxide, 0.5 to 20 portions of magnesium silicate particles and 0.5 to 20 portions of borosilicate particles;
the UV layer is made of a UV protective layer for shielding harmful ultraviolet rays, and the ultraviolet transmittance is less than or equal to 0.001 percent according to JG/T347 standard test. The UV layer is a high-concentration UV master batch material layer with uniform thickness and is composed of the following raw materials in parts by weight: 1-20 parts of ultraviolet stabilizer, 0.1-0.5 part of lubricant, 0.1-0.5 part of heat stabilizer and 85-99 parts of organic resin, wherein the organic resin in the UV layer is aromatic polycarbonate with the molecular weight of 10000-50000 g/mol; according to ISO1133-2011, under the condition of 300 ℃ of 1.2Kg, the melt index ranges from 1 to 15g/10 min.
The main layer is an organic resin layer, the main layer is a commercially available common mark, the main layer comprises organic resins with different molecular weights, the organic resins are selected from aromatic polycarbonate with the molecular weight of 10000-50000 g/mol, and the melt index range is 1-15 g/10min under the condition of 1.2Kg at the temperature of ISO1133-2011,300 ℃.
The structure of main part layer is the grafting hollow plate of mortise-tenon joint structure, is provided with tenon and tongue-and-groove respectively at the both ends of main part layer, and the main part in situ portion is multilayer hollow structure, and multilayer hollow structure is crossed by the even resin layer of horizontal direction and the resin upright rib of vertical direction and forms, and the thickness of superficial layer is 2 mu m ~ 300 mu m, and the thickness of UV layer is 30 mu m ~ 300 mu m, and the thickness of main part layer is 10mm ~ 150 mm.
The tenon of main part layer one end is two bellied hollow structure, and bellied hollow structure's length is 1cm ~ 10cm, and the tongue-and-groove of the main part layer other end is two recesses, and the degree of depth of recess is 1cm ~ 11cm, and the degree of depth of recess is 0.1cm ~ 1cm than bellied hollow structure's length. The wall thickness of the single layer of the multilayer hollow structure in the main body layer is 0.05 mm-3 mm, the uniform resin layers in the horizontal direction in the main body layer are distributed at equal intervals, the interlayer interval of the uniform resin layers is 2 mm-30 mm, the resin studs in the vertical direction of the main body layer are distributed at equal intervals, and the intervals of the resin studs are 2 mm-30 mm.
The magnesium silicate salt particles of the surface layer mainly contain hydrous magnesium silicate, the rigidity of the surface can be improved, the content of silicon dioxide is more than or equal to 60 percent and the content of magnesium oxide is 30 to 40 percent by adopting X-ray photoelectron spectroscopy, and the average particle size of the magnesium silicate salt particles is 0.1 to 100 mu m, preferably 0.2 to 50 mu m, and most preferably 0.2 to 20 mu m by adopting a high-resolution optical microscope.
The borosilicate particles in the surface layer are tested by X-ray photoelectron spectroscopy, the content of silicon dioxide is more than or equal to 50 percent, the content of aluminum oxide is 10 to 30 percent, and the content of sodium oxide is less than 5 percent; the borosilicate particles are transparent particles having an average particle size of 1 to 500 μm, preferably 2 to 300 μm, and most preferably 2 to 200 μm, as measured by high-resolution optical microscopy.
The titanium dioxide in the surface layer is rutile type titanium dioxide, and the particle size of the rutile type titanium dioxide is 0.2-1 μm, preferably 0.2-0.5 μm, measured by a high-resolution optical microscope.
The lubricant in the surface layer is selected from stearate or siloxane compounds, and the heat stabilizer is selected from one or more of hindered phenols, phosphites and thioesters.
The ultraviolet stabilizer in the surface layer is compounded by one or more of hindered amine, benzophenone, benzotriazole, triazine and salicylic acid, the toner is inorganic and organic toner, the organic resin is aromatic polycarbonate with the molecular weight of 10000-50000 g/mol, and the melt index range is 1-15 g/10min under the condition of 1.2Kg at 300 ℃ according to ISO 1133-2011.
The invention also discloses a preparation method of the spraying-free hollow plate with the texture on the surface, which comprises the following steps: adopting a known mature or customized hollow plate production system, wherein the outlet of the die is a smooth plane, and surface layer material particles are added into a material distribution system of a No. 1 extruder of the plate line; adding UV layer material particles into a material proportioning system of a No. 2 extruder of the plate line; adding the particles of the main body layer material into a material proportioning system of a No. 3 extruder of the plate line; after the three raw materials are respectively melted, melt is uniformly compounded in a die through three independent runners to form an ABC three-layer structure, flow rate difference is generated due to difference of size and thermal properties of surface layer materials, the melt is compressed and stretched anisotropically, and a uniformly distributed texture structure is gradually formed on the surface layer in the continuous production process; and then preparing a finished product of the spraying-free hollow plate with the texture on the surface through a sizing table, an annealing system, a static electricity removing system, a film covering system, a cutting system and a stacking system.
The cylinder temperatures of the No. 1 extruder batching system, the No. 2 extruder batching system and the No. 3 extruder batching system are 240-310 ℃.
The main body layer is arranged below the UV layer, and the material is organic resin and provides structure and strength. The structure on main part layer can carry out free design, and the typical structure on main part layer is the cavity board in the grafting of mortise and tenon structure, and two panels can directly assemble the connection through the bayonet joint at both ends, need not screw and sealed glue, have solved waterproof problem simultaneously. The main body layer is internally provided with a multilayer hollow structure formed by intersecting even resin layers in the horizontal and vertical directions, the multilayer hollow structure of the main body layer can play a role in heat insulation, and the heat transfer coefficient is lower than 1.0W/(m)2K); the weight of the sheet per square unit was 1kg/m2～10kg/m2The weight of the hollow glass is reduced by more than 50 percent compared with that of the hollow glass with the same thickness. The main body layer adopts a mortise and tenon structure and a multilayer hollow structure, and has extremely high mechanical strength, water tightness and air tightness; the integral structure of the spraying-free hollow plate is very suitable for indoor decoration and large-scale roof curtain walls.
The invention has the beneficial effects that: the invention adopts a compound process of a plurality of extruders, so that the product realizes the uniform combination of a surface layer, a UV layer and a main body layer through a molecular layer; the surface layer is a texture layer made of inorganic and organic composite materials, unique phase state distribution is formed by combination of materials with different particle size distribution and different thermodynamic properties, and dense structural textures are formed on the surface layer and are expressed as particle texture. The UV layer provides UV protection against the bulk layer, which is an organic resin layer, the bulk layer is the main internal structure of the panel, the bulk layer provides mechanical properties and strength, and may be a flat plate or a profiled structure, the internal structure of the bulk layer includes, but is not limited to, all hollow structures known in the art, such as a multilayer rectangular, multilayer X-shaped or multilayer plug-in plate type.
The spraying-free hollow plate is continuously produced through the particle size distribution and the phase state design of the material to form a surface texture structure, so that the spraying link is directly omitted, and the pollution emission of the spraying link is eliminated. The invention carries out the fusion of molecular scale through the interfaces of different layer materials, thereby greatly improving the adhesive force of surface texture. The invention also completely shields harmful ultraviolet rays by adding the high-concentration ultraviolet stabilizer in the surface texture layer and the UV layer, so that the life cycle of the plate and the surface texture layer is greatly prolonged. The surface particles of the spraying-free hollow plate have higher hardness and rigidity, so that the scratch resistance of the surface of the plate can be effectively improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a single-surface layer spray-free hollow plate according to the present invention;
FIG. 2 is a schematic cross-sectional view of a dual-surface layer spray-free hollow plate according to the present invention;
in the figure: 1-a surface layer; 2-UV layer; 3-a bulk layer; 4-raised hollow structure; 5-groove.
Detailed Description
The invention is described in detail below with reference to the figures and the detailed description.
As shown in fig. 1 and 2, the invention discloses a surface-textured spray-free hollow board, which is composed of a surface layer 1, a UV layer 2 and a main body layer 3, wherein the UV layer is arranged between the surface layer and the main body layer; the surface layer 1 is a composite material layer with uniform thickness, and the surface layer 1 is formed by alternately distributing materials with different particle sizes to form a surface texture structure; UV layer 2 is the even UV master batch material layer of thickness, and main part layer 3 is organic resin layer, and main part layer 3's structure is the grafting cavity board of tenon fourth of the twelve earthly branches structure, is provided with tenon and tongue-and-groove respectively at main part layer 3's both ends, and main part layer 3 is inside to be multilayer hollow structure, and multilayer hollow structure is crossed by the even resin layer of horizontal direction and the resin vertical bar of vertical direction and forms. The thickness of the surface layer 1 was 50 μm. The thickness of the UV layer 2 was 30 μm. The tenon of 3 one ends in main part layer is two bellied hollow structure 4, and the length of bellied hollow structure 4 is 1cm, and the tongue-and-groove of the 3 other ends in main part layer is two recesses 5, and recess 5's degree of depth is 1.5cm, and main part layer 3 inside multilayer hollow structure's individual layer wall thickness is 0.1 mm. The even resin layer of the inside horizontal direction of main part layer 3 is equidistant distribution, and the interlamellar spacing of even resin layer is 2 mm. The resin studs in the vertical direction of the main body layer 3 are distributed at equal intervals, and the interval of the resin studs is 2 mm. The thickness of the body layer 3 is 10 mm.
The production process and preparation of the raw materials are as follows: the preparation of the surface layer material and the UV layer material is uniformly dispersed in a high-speed mixer according to the formula proportion, then the surface layer material and the UV layer material can be melted and plasticized by a single-screw or double-screw extruder, melt lines are extruded by round holes of a die head of the extruder, the melt lines are cooled and shaped by a cold water tank, and are subjected to traction and grain cutting to prepare raw material particles, and the raw material particles are dried and then enter a hollow plate production batching system to carry out plate production.
The production process of the plate with the textured surface and without the spraying hollow plate comprises the following steps: adopting a known mature or customized hollow plate production system, wherein the outlet of a die is a smooth plane, surface layer 1 material particles are added into a material mixing system of a No. 1 plate wire extruder, and the temperature of a machine barrel is 240-310 ℃; adding UV layer 2 material particles into a material distribution system of a No. 2 extruder of a plate line, wherein the temperature of a machine barrel is 240-310 ℃; adding the material particles of the main body layer 3 into a material proportioning system of a No. 3 plate wire extruder, wherein the temperature of a machine barrel is 240-310 ℃; after the three raw materials are respectively melted, melt is uniformly compounded in a die through three independent runners to form an ABC three-layer structure, the material of the surface layer 1 can generate flow rate difference due to the difference of size and thermal properties, the melt can generate anisotropic compression and stretching, and a uniformly distributed texture structure is gradually formed on the surface layer in the continuous production process. And then preparing a finished product of the spraying-free hollow plate with the texture on the surface through a sizing table, an annealing system, a static electricity removing system, a film covering system, a cutting system and a stacking system.
Example 1: the surface-textured spraying-free hollow plate consists of a surface layer, a UV layer and a main body layer, wherein the UV layer is arranged between the surface layer and the main body layer. Formula 1: the surface layer is composed of the following raw materials in parts by weight: 97.9 parts of organic resin, 0.3 part of antioxidant, 0.2 part of lubricant, 0.1 part of heat stabilizer, 1 part of ultraviolet stabilizer, 0.1 part of toner and 0.5 part of titanium dioxide; the UV layer is composed of the following raw materials in parts by weight: 1 part of ultraviolet stabilizer, 0.2 part of lubricant, 0.1 part of heat stabilizer and 85 parts of organic resin, wherein the organic resin in the UV layer is aromatic polycarbonate with the molecular weight of 10000 g/mol; the main layer is an organic resin layer, and the organic resin in the main layer is selected from aromatic polycarbonate with the molecular weight of 20000 g/mol. The design thickness of the surface layer is 30 microns, the design thickness of the UV layer is 50 microns, the design thickness of the main body layer is 16mm, and the structure of the main body layer is an X-type five-layer hollow plate.
The invention adopts a mature hollow plate production system, which comprises three single screw extruders, namely No. 1, No. 2 and No. 3 extruders, wherein the diameters of the screws are respectively 45mm, 75mm and 110mm, and the outlet of a die is a smooth plane. Adding the particles of the formula 1 into a material mixing system of a No. 1 plate wire extruder, wherein the temperature of a machine barrel is 240-300 ℃; adding UV master batch particles into a material distribution system of a No. 2 extruder of a plate line, wherein the temperature of a machine barrel is 240-300 ℃; adding PC resin into a material mixing system of a No. 3 extruder of a plate line, wherein the temperature of a machine barrel is 240-310 ℃; the three raw materials are respectively melted and then are uniformly compounded in a die through three independent runners to form an ABC three-layer structure, the flow rate difference can be generated due to the difference of the size and the thermal property of a surface layer material, the melt can generate anisotropic compression and stretching, a uniformly distributed texture structure is gradually formed on the surface layer in the continuous production process, the main component of the material of one layer is PC resin, the material of one layer has good compatibility and bonding force with the material of the UV layer, and meanwhile, the material of the UV layer and the material of the three layers are pure transparent PC base materials and are uniformly fused together. And preparing a hollow plate finished product through a sizing table, an annealing system, static electricity removal, film coating, cutting, stacking and the like.
Example 2: the surface-textured spraying-free hollow plate consists of a surface layer, a UV layer and a main body layer, wherein the UV layer is arranged between the surface layer and the main body layer. And (2) formula: the surface layer is composed of the following raw materials in parts by weight: 95.4 parts of organic resin, 0.3 part of antioxidant, 0.2 part of lubricant, 0.2 part of heat stabilizer, 1 part of ultraviolet stabilizer, 0.1 part of toner, 0.5 part of titanium dioxide and 2.5 parts of magnesium silicate particles; the UV layer is composed of the following raw materials in parts by weight: 1 part of ultraviolet stabilizer, 0.2 part of lubricant, 0.2 part of heat stabilizer and 90 parts of organic resin, wherein the organic resin in the UV layer is aromatic polycarbonate with the molecular weight of 20000 g/mol; the main layer is an organic resin layer, and the organic resin in the main layer is aromatic polycarbonate with the molecular weight of 10000 g/mol.
Example 3: the surface-textured spraying-free hollow plate consists of a surface layer, a UV layer and a main body layer, wherein the UV layer is arranged between the surface layer and the main body layer. And (3) formula: the surface layer is composed of the following raw materials in parts by weight: 95.4 parts of organic resin, 0.3 part of antioxidant, 0.2 part of lubricant, 0.3 part of heat stabilizer, 1 part of ultraviolet stabilizer, 0.1 part of toner, 0.5 part of titanium dioxide and 2.5 parts of borosilicate particles; the UV layer is composed of the following raw materials in parts by weight: 2 parts of ultraviolet stabilizer, 0.3 part of lubricant, 0.3 part of heat stabilizer and 95 parts of organic resin, wherein the organic resin in the UV layer is aromatic polycarbonate with the molecular weight of 30000 g/mol; the main layer is an organic resin layer, and the organic resin in the main layer is aromatic polycarbonate with the molecular weight of 50000 g/mol.
Example 4: the surface-textured spraying-free hollow plate consists of a surface layer, a UV layer and a main body layer, wherein the UV layer is arranged between the surface layer and the main body layer. And (4) formula: the surface layer is composed of the following raw materials in parts by weight: 92.9 parts of organic resin, 0.3 part of antioxidant, 0.2 part of lubricant, 0.4 part of heat stabilizer, 1 part of ultraviolet stabilizer, 0.1 part of toner, 0.5 part of titanium dioxide, 2.5 parts of magnesium silicate particles and 2.5 parts of borosilicate particles; the UV layer is composed of the following raw materials in parts by weight: 4 parts of ultraviolet stabilizer, 0.4 part of lubricant, 0.5 part of heat stabilizer and 99 parts of organic resin, wherein the organic resin in the UV layer is aromatic polycarbonate with the molecular weight of 40000 g/mol; the main layer is an organic resin layer, and the organic resin in the main layer is selected from aromatic polycarbonate with the molecular weight of 40000 g/mol.
Example 5: the surface-textured spraying-free hollow plate consists of a surface layer, a UV layer and a main body layer, wherein the UV layer is arranged between the surface layer and the main body layer. And (5) formula: the surface layer is composed of the following raw materials in parts by weight: 90.4 parts of organic resin, 0.3 part of antioxidant, 0.2 part of lubricant, 0.5 part of heat stabilizer, 1 part of ultraviolet stabilizer, 0.1 part of toner, 0.5 part of titanium dioxide, 5 parts of magnesium silicate particles and 2.5 parts of borosilicate particles; the UV layer is composed of the following raw materials in parts by weight: 5 parts of ultraviolet stabilizer, 0.5 part of lubricant, 0.2 part of heat stabilizer and 96 parts of organic resin, wherein the organic resin in the UV layer is aromatic polycarbonate with the molecular weight of 30000 g/mol; the main layer is an organic resin layer, and the organic resin in the main layer is selected from aromatic polycarbonate with the molecular weight of 20000 g/mol.
Example 6: the surface-textured spraying-free hollow plate consists of a surface layer, a UV layer and a main body layer, wherein the UV layer is arranged between the surface layer and the main body layer. And (6) formula: the surface layer is composed of the following raw materials in parts by weight: 87.9 parts of organic resin, 0.3 part of antioxidant, 0.2 part of lubricant, 0.1 part of heat stabilizer, 1 part of ultraviolet stabilizer, 0.1 part of toner, 0.5 part of titanium dioxide, 5 parts of magnesium silicate particles and 5 parts of borosilicate particles; the UV layer is composed of the following raw materials in parts by weight: 1 part of ultraviolet stabilizer, 0.1 part of lubricant, 0.1 part of heat stabilizer and 89 parts of organic resin, wherein the organic resin in the UV layer is aromatic polycarbonate with the molecular weight of 10000 g/mol; the main layer is an organic resin layer, and the organic resin in the main layer is aromatic polycarbonate with the molecular weight of 50000 g/mol.
Control group 1: in the control group 1, the surface layer material was removed, the hollow plate consisted of a UV layer and a main layer, and after the production of the hollow plate, the main layer was subjected to surface spray coating and UV curing.
Control group 2: control 2 had the skin material removed and the hollow panel consisted of only the UV layer and the bulk layer.
The comparison of the properties of the different formulations of the hollow board is shown in table 1:
table 1: and comparing the performances of different formulas of the hollow plate.
Figure BDA0003015862690000101
In table 1: -represents poor wear resistance, + represents good wear resistance, + more represents better wear resistance.
The test method comprises the following steps:
1. and (3) thickness testing: the thickness of each layer was observed and measured to the nearest 1 μm in μm using a high-resolution microscope.
2. And (3) roughness testing: the measurement was carried out according to the ISO 4287 standard requirements, using an Elcometer 7062 surface roughness meter, in Ra.
3. And (3) testing the wear resistance: and (3) wrapping the sample by using a 500g weight and three layers of medical gauze, sliding the sample back and forth on the surface of the sample for 20 cycles, and observing whether obvious scratches appear on the surface.
4. And (3) impact performance test: the hollow plate was hit with an energy of approximately 30J by dropping 1kg of an iron ball from a position 3m high, and whether the sample cracked or not was observed.
5. Xenon lamp aging test: according to the ISO 4892 standard, a xenon lamp is adopted for accelerating aging, the condition of a surface layer is observed after 5000 hours of continuous aging under the condition of Cycle 1, and whether the surface layer has failure phenomena such as cracking, falling and the like is judged.
Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.

Claims (9)

1. The utility model provides a surface has spraying free hollow plate of texture which characterized in that: the spraying-free hollow plate with the textured surface consists of a surface layer, a UV layer and a main body layer, wherein the UV layer is arranged between the surface layer and the main body layer;
the surface layer is composed of the following raw materials in parts by weight: 60 to 95 portions of organic resin, 0.1 to 0.5 portion of lubricant, 0.1 to 0.5 portion of heat stabilizer, 0.5 to 20 portions of ultraviolet stabilizer, 0.01 to 1 portion of toner, 0.5 to 10 portions of titanium dioxide, 0.5 to 20 portions of magnesium silicate particles and 0.5 to 20 portions of borosilicate particles;
the UV layer is composed of the following raw materials in parts by weight: 1-20 parts of ultraviolet stabilizer, 0.1-0.5 part of lubricant, 0.1-0.5 part of heat stabilizer and 85-99 parts of organic resin, wherein the organic resin in the UV layer is aromatic polycarbonate with the molecular weight of 10000-50000 g/mol;
the main body layer is an organic resin layer, and aromatic polycarbonate with the molecular weight of 10000-50000 g/mol is selected as the organic resin in the main body layer.
2. The surface-textured, spray-free hollow board of claim 1, wherein: the structure of main part layer is the grafting hollow plate of mortise-tenon joint structure the both ends of main part layer are provided with tenon and tongue-and-groove respectively, the inside multilayer hollow structure that is of main part layer, multilayer hollow structure is crossing by the even resin layer of horizontal direction and the resin grudging post of vertical direction and forms, the thickness of superficial layer is 2 mu m ~ 300 mu m, the thickness on UV layer is 30 mu m ~ 300 mu m, the thickness on main part layer is 10mm ~ 150 mm.
3. The surface-textured, spray-free hollow board of claim 1, wherein: the magnesium silicate particles in the surface layer mainly comprise hydrous magnesium silicate, and the average particle size of the magnesium silicate particles is 0.1-100 mu m.
4. The surface-textured, spray-free hollow board of claim 1, wherein: the borosilicate particles in the surface layer are transparent particles, and the average particle size of the borosilicate particles is 1-500 mu m.
5. The surface-textured, spray-free hollow board of claim 1, wherein: the titanium dioxide in the surface layer is rutile type titanium dioxide, and the average grain diameter of the rutile type titanium dioxide is 0.2-1 mu m.
6. The surface-textured, spray-free hollow board of claim 1, wherein: the lubricant in the surface layer is selected from stearate or siloxane compounds, and the heat stabilizer is selected from one or more of hindered phenols, phosphites and thioesters.
7. The surface-textured, spray-free hollow board of claim 1, wherein: the ultraviolet stabilizer in the surface layer is one or more of hindered amine, benzophenone, benzotriazole, triazine and salicylic acid, the toner is inorganic toner or organic toner, and the organic resin is aromatic polycarbonate with the molecular weight of 10000-50000 g/mol.
8. The method for preparing a surface-textured spray-free hollow board according to claim 1, wherein the method comprises the following steps: the preparation method specifically comprises the following steps:
adopting a known mature or customized hollow plate production system, wherein the outlet of the die is a smooth plane, and surface layer material particles are added into a material distribution system of a No. 1 extruder of the plate line; adding UV layer material particles into a material proportioning system of a No. 2 extruder of the plate line; adding the particles of the main body layer material into a material proportioning system of a No. 3 extruder of the plate line; after the three raw materials are respectively melted, melt is uniformly compounded in a die through three independent runners to form an ABC three-layer structure, flow rate difference is generated due to difference of size and thermal properties of surface layer materials, the melt is compressed and stretched anisotropically, and a uniformly distributed texture structure is gradually formed on the surface layer in the continuous production process; and then preparing a finished product of the spraying-free hollow plate with the texture on the surface through a sizing table, an annealing system, a static electricity removing system, a film covering system, a cutting system and a stacking system.
9. The method for preparing a surface-textured spray-free hollow board according to claim 8, wherein the method comprises the following steps: the temperature of machine barrels of the No. 1 extruder batching system, the No. 2 extruder batching system and the No. 3 extruder batching system is 240-310 ℃.
CN202110389296.0A 2021-04-12 2021-04-12 Spraying-free hollow plate with texture on surface and preparation method thereof Pending CN113022072A (en)

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