CN112693093A - Manufacturing process of weather-resistant PE modified material and profile co-extrusion device - Google Patents
Manufacturing process of weather-resistant PE modified material and profile co-extrusion device Download PDFInfo
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- CN112693093A CN112693093A CN202011407355.4A CN202011407355A CN112693093A CN 112693093 A CN112693093 A CN 112693093A CN 202011407355 A CN202011407355 A CN 202011407355A CN 112693093 A CN112693093 A CN 112693093A
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- 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
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- 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
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
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- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
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- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of co-extrusion section bar manufacturing, in particular to a manufacturing process of a weather-resistant PE modified material and a section bar co-extrusion device, wherein the weather-resistant PE modified material comprises the following raw materials of 1-99% of HDPE, 1-10% of propylene glycol butyl ether, 1-70% of a wear-resistant agent, 0.1-20% of a flatting agent, 0-10% of a lubricating agent, 1-20% of an antistatic agent, 1-15% of hexamethylenetetramine, 0.01-10% of a heat stabilizer and 0.01-10% of a UV stabilizer, a bonding layer material and a metal layer material with a specific model, and the bonding layer is formed by mixing one or more of a hot melt adhesive, an adhesive and. According to the scheme of the invention, the PE modified material is used for reducing the water absorption of the section, so that the purposes of aging improvement and pollution resistance are achieved. The surface material and the metal are tightly combined into a whole under the action of the middle bonding layer through the profile co-extrusion device, so that the profile is compatible with the high precision and high strength of the metal profile, has the advantages of wear resistance, corrosion resistance, static resistance, environmental protection and the like, and improves the quality of products.
Description
Technical Field
The invention relates to the technical field of co-extrusion profile manufacturing, in particular to a manufacturing process of a weather-resistant PE modified material and a profile co-extrusion device.
Background
The double-layer co-extrusion wood profile is widely applied to the fields of floors, decorative wallboards, fences and the like, but can not be used as a bearing part due to the special material properties, low rigidity and poor bending resistance and deformation resistance.
The plastic-wood aluminum core section consists of an internal aluminum core section and a wood-plastic section or a foam layer wrapped outside, wherein the wood-plastic section contains wood powder and wood fibers, the section is easy to absorb water, age and mildew after being used for a long time or in a humid environment, a surface layer is easy to fade and pulverize, the appearance of a product is influenced, and the wood-plastic fabric is easy to wear or scratch, so that the quality problem is caused.
Disclosure of Invention
The invention aims to provide a manufacturing process of a weather-resistant PE modified material and a profile co-extrusion device, and solves the quality problems of low rigidity, poor bending resistance and deformation resistance, easy fading, abrasion and the like of the existing wood-plastic profile by adopting the technical scheme provided by the invention.
In order to solve the technical problems, the invention provides a manufacturing process of a weather-resistant PE modified material, which comprises the following steps:
s100: the following raw materials are weighed according to the mixture ratio of the components: 1-99% of HDPE, 1-10% of propylene glycol butyl ether, 1-70% of wear-resisting agent, 0.1-20% of delustering agent, 0-10% of lubricant, 1-20% of antistatic agent, 1-15% of hexamethylenetetramine, 0.01-10% of heat stabilizer and 0.01-10% of UV stabilizer; the UV stabilizer is a mixture of sodium acetate, chlorinated polyethylene and methyl hydroxybenzoate; the wear-resisting agent is a mixture of various hydroxyl silicone oil, nano zinc oxide, titanium nitride powder and graphene oxide.
S200: mixing the HDPE, the wear-resisting agent and the heat stabilizer according to a formula, adding the mixture into a reaction device, fully stirring at the temperature of 100 ℃ and 120 ℃, adding propylene glycol butyl ether, continuously stirring for reaction for 2-3H, and drying after the reaction is finished to obtain a material mixture A; and mixing the flatting agent, the antistatic agent, the hexamethylenetetramine and the UV stabilizer according to a formula, mixing for 1-2H at the temperature of 60-80 ℃, drying, standing and cooling to obtain a material mixture B.
S300: and (4) placing the mixture A and the mixture B obtained in the step (S200) into a mixer for high-speed stirring, setting the drying temperature of the mixer to be 150-180 ℃, mixing for 2-3H, naturally cooling to 40 ℃, and discharging.
S400: and (4) adding the raw materials obtained in the step (S300) into a granulator for heating, kneading and bonding, wherein the length-diameter ratio of the granulator is 33-52, the granulation temperature is 180-.
Preferably, the content percentage of each component of the wear-resisting agent is as follows: 10-40% of hydroxyl silicone oil, 5-20% of nano zinc oxide, 10-30% of titanium nitride powder and 5-25% of graphene oxide.
Preferably, the preparation process of the anti-wear agent is as follows: adding hydroxyl silicone oil, titanium nitride powder and graphene oxide into a stirring device according to a ratio, heating to 100-150 ℃, uniformly stirring, adding a nano zinc oxide and hydrazine hydrate solution, carrying out reflux reaction for 3-5H, and distilling, washing and drying to obtain the wear-resistant agent.
The co-extrusion section comprises a metal layer, and an adhesive layer and a modified material layer which are sequentially coated on the metal layer from inside to outside, wherein the modified material layer is the weather-resistant PE modified material.
Preferably, the adhesive layer is formed by mixing one or more of a hot melt adhesive, an adhesive and a polyurethane adhesive, and the metal layer is made of one of aluminum alloy, galvanized iron and stainless steel.
Preferably, a stripe-shaped wood grain is formed on the modified material layer.
A profile co-extrusion device comprises a co-extrusion die, a conveyor for conveying a metal layer into the co-extrusion die, and two co-extruders which are respectively arranged at two sides of the co-extrusion die and communicated with the co-extrusion die; and the outlet of the co-extrusion die is connected with a wood grain simulation press roller device and a shaping cooling die.
Preferably, a feed port is formed in one side, close to the conveyor, of the co-extrusion die, and an extrusion cavity communicated with the feed port is formed in the co-extrusion die; and glue inlet channels for communicating the extrusion cavity with the co-extruder are formed in two sides of the co-extrusion die.
Preferably, the glue inlet channel comprises a glue inlet which can be connected with the co-extruder and a hot runner which is communicated with the glue inlet and the extrusion cavity; and a glue inlet ring is sleeved in the glue inlet.
Preferably, the width of the hot runner gradually narrows from one side close to the glue inlet to one side close to the extrusion cavity.
From the above, the following beneficial effects can be obtained by applying the invention: the PE modified material prepared by the process of the PE modified material in the scheme of the invention can reduce the water absorption of the section bar as a surface layer material, achieve the purposes of improving aging and resisting pollution, and the section bar co-extrusion device is wear-resistant and not easy to fade, the section bar co-extrusion device of the scheme of the invention is provided with the co-extrusion die, the two sides of the co-extrusion mould are communicated with a co-extruder, the outlet of the co-extrusion mould is sequentially connected with a wood-like grain pressing roller device and a shaping cooling mould, in the co-extrusion process, the surface material and the metal are tightly combined into a whole under the action of the middle bonding layer, the co-extrusion section with a three-layer structure and wood grains is formed by extrusion, the appearance quality, the bending resistance and the deformation resistance of the section are greatly improved, the section is compatible with the high precision and the high strength of the metal section, has the advantages of wear resistance, corrosion resistance, static resistance, environmental protection and the like, and the product quality is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a block diagram of a process for producing a PE modified material according to an embodiment of the invention;
FIG. 2 is a schematic view of a co-extruded profile according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a profile co-extrusion device according to an embodiment of the invention;
FIG. 4 is a diagram of an internal structure of a co-extrusion die according to an embodiment of the invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
In order to solve the above technical problems, the present embodiment provides a manufacturing process of a weather-resistant PE modified material, please refer to fig. 1, including the following steps:
s100: the following raw materials are weighed according to the mixture ratio of the components: 1-99% of HDPE, 1-10% of propylene glycol butyl ether, 1-70% of wear-resisting agent, 0.1-20% of delustering agent, 0-10% of lubricant, 1-20% of antistatic agent, 1-15% of hexamethylenetetramine, 0.01-10% of heat stabilizer and 0.01-10% of UV stabilizer; the UV stabilizer is a mixture of sodium acetate, chlorinated polyethylene and methyl hydroxybenzoate; the wear-resisting agent is a mixture of various hydroxyl silicone oil, nano zinc oxide, titanium nitride powder and graphene oxide.
The PE modified material comprises HDPE, propylene glycol butyl ether, a wear-resistant agent, a delustering agent, a lubricant, a UV stabilizer, hexamethylenetetramine and a heat stabilizer, wherein the added wear-resistant agent and stabilizer enable the material to be wear-resistant and corrosion-resistant, and the antistatic agent, the lubricant, the UV stabilizer and the delustering agent can enable the co-extruded section to have good gloss appearance and antistatic performance and increase the hand feeling texture of the section. Wherein, the raw material combination does not contain filler, wood powder and wood fiber, thereby realizing the improvement of the water absorption of the section bar and further achieving the effects of improving aging and pollution resistance.
S200: mixing HDPE, wear-resisting agent and heat stabilizer according to a formula ratio, adding into a reaction device, fully stirring at 100-120 ℃, adding propylene glycol butyl ether, continuously stirring for reaction for 2-3H, and drying after the reaction is finished to obtain a material mixture A; mixing a delustering agent, an antistatic agent, hexamethylenetetramine and a UV stabilizer according to a formula, mixing for 1-2H at the temperature of 60-80 ℃, drying, standing and cooling to obtain a material mixture B.
In the step of manufacturing the PE modified material, HDPE, a wear-resisting agent and a heat stabilizer are mixed to form a mixture A, then a delustering agent, an antistatic agent, hexamethylenetetramine and a UV stabilizer are mixed to form a mixture B, the mixture B is prepared by separately mixing the HDPE, the wear-resisting agent and the heat stabilizer, and the added wear-resisting agent and the added stabilizer can enable the material to have wear resistance and corrosion resistance. The delustering agent, the antistatic agent, the hexamethylenetetramine and the UV stabilizer are used as auxiliary ingredients, and can be mixed with the main material subsequently, so that the ingredients are mixed for 1-2H at the temperature of 80 ℃, dried, kept stand and cooled to obtain a material mixture B.
S300: placing the mixture A and the mixture B obtained in the step S200 into a mixer for high-speed stirring, setting the drying temperature of the mixer to be 150-180 ℃, mixing for 2-3H, naturally cooling to 40 ℃, and discharging;
and preliminarily stirring the obtained mixture A and the mixture B to realize the preliminary uniform mixing of the raw materials, and then putting the mixed materials into a mixer for high-speed stirring to further uniformly mix the raw materials. Preferably, the material drying temperature of the mixer is set to be 180 ℃, the material mixing time is 2H, the raw materials are discharged after the raw materials are naturally cooled to 40 ℃ after the mixing is finished, and the raw materials are placed in a dry place to be stored and enter a one-step process.
S400: adding the raw materials obtained in the step S300 into a granulator for heating, kneading and bonding, wherein the length-diameter ratio of the granulator is 33: 52, the granulation temperature is 180-250 ℃, the screw rotating speed is 300-500r/min, and the PE modified material particles are prepared by water granulation.
Adding the mixed raw materials into a granulator, heating, kneading and bonding, preferably, the granulation temperature is 250 ℃, and the length-diameter ratio of the granulator is 33: 52, the rotating speed of the screw is 500r/min, the quality of the granules prepared under the granulation condition is high, the yield is high, furthermore, the PE modified granules are prepared by water granulation of the raw materials in a granulator for 25 minutes, and the raw materials are free of fillers and have the advantages of pollution resistance, static resistance, wear resistance and high strength and hardness.
In order to realize that the obtained PE modified material particles have excellent stability and wear resistance, the raw materials of the UV stabilizer and the wear-resistant agent are important, for this reason, the UV stabilizer is a mixture of sodium acetate, chlorinated polyethylene and methyl hydroxybenzoate, and the wear-resistant agent is a mixture of various hydroxyl silicone oil, nano zinc oxide, titanium nitride powder and graphene oxide. The wear-resisting agent comprises the following components in percentage by weight: 10-40% of hydroxyl silicone oil, 5-20% of nano zinc oxide, 10-30% of titanium nitride powder and 5-25% of graphene oxide. The UV stabilizer comprises the following components in percentage by weight: 20-50% of sodium acetate, 15-40% of chlorinated polyethylene and 20-30% of methyl hydroxybenzoate.
Further, in order to ensure that the wear-resistant agent has better wear resistance, the preparation process of the wear-resistant agent is to add hydroxyl silicone oil, titanium nitride powder and graphene oxide into a stirring device according to a certain proportion, heat the mixture to 100-150 ℃, uniformly stir the mixture, add nano zinc oxide and hydrazine hydrate solution, perform reflux reaction for 3-5H, and obtain the wear-resistant agent through distillation, washing and drying. The wear-resisting property of the PE material is improved by adding the wear-resisting agent into the preparation of the PE material.
Referring to fig. 2, the co-extruded profile comprises a metal layer 1, and an adhesive layer 2 and a modifying material layer 3 sequentially coated on the metal layer 1 from inside to outside, wherein the modifying material layer 3 is a PE modifying material prepared by the preparation process. The co-extruded section bar is provided with a three-layer structure of a PE modified material, an adhesive layer material and a metal layer with a specific model, wherein the adhesive layer is formed by mixing one or more of a hot melt adhesive, an adhesive and a polyurethane adhesive, and the metal layer is one of aluminum alloy, galvanized iron and stainless steel.
In order to realize the use universality of the co-extrusion section bar and improve the compatibility of the co-extrusion section bar, the metal layer 1 is rectangular and is internally of a hollow structure, the inner side of the metal layer 1 is provided with embedded grooves 11 at four corners, the embedded connection with other various parts is realized through the embedded grooves 11, the purpose of connection and fixation is achieved, and a plurality of arc-shaped hooks 12 are formed on the inner side wall of the metal layer 1. The number of the arc-shaped hooks 12 is 8, and the arc-shaped hooks 12 are symmetrically arranged on the inner side wall of the metal layer 1. The arc-shaped hook 12 realizes the buckling effect with other various parts, thereby achieving the purpose of fixed connection and improving the practicability of the co-extrusion section. The metal layer greatly endows the co-extruded section with good rigidity and bending resistance, can be used as a bearing part, and greatly expands the application range.
The PE modified material is used as a surface layer material to reduce the water absorption of the section, so that the purposes of improving aging and resisting pollution are achieved, and the section is compatible with the high precision and high strength of a metal section, and has the advantages of wear resistance, corrosion resistance, static resistance, environmental protection and the like.
In order to solve the problem of adhesion between the modified material layer 3 and the metal layer 1, the adhesive layer 2 and the modified material layer 3 are sequentially coated on the metal layer 1 from inside to outside, the modified material layer 3 is completely and tightly coated on the metal layer 1 through the adhesive layer 2, the thickness of the adhesive layer is 0.5mm-1mm, and the thickness of the modified material layer is 2mm-5 mm. The composition of the bonding layer 2 comprises one or more of hot melt adhesive, adhesive and polyurethane adhesive, so that the bonding layer 2 has a better bonding effect, and the metal layer 1 is prevented from being separated from the modified material layer 3 to influence the use effect.
Preferably, the thickness of the bonding layer is 0.5mm, the thickness of the modified material layer is 2mm, so that the bonding layer 2, the modified material layer 3 and the metal layer 1 are stably bonded, and the profile structure has high stability. Wherein, the bond line 2 is that hot melt adhesive, adhesive and polyurethane glue mix and form, realizes that bond line 2 has the best adhesion effect, thereby avoids influencing the result of use with the metal level separation in the modified material layer in the use, improves section bar shaping quality.
The strip-shaped wood grains are formed on the modified material layer 3 and can be formed by stamping through the whole wood grains, so that the attractive effect is achieved.
In order to realize the extrusion molding of the co-extruded section, in the embodiment, a section co-extrusion device is used, please refer to fig. 3, which includes a co-extrusion mold 20, a conveyor 10 for conveying the metal layer 1 into the co-extrusion mold 20, two co-extruders 30 respectively disposed at two sides of the co-extrusion mold 20 and communicating with the co-extrusion mold 20, and an outlet of the co-extrusion mold 20 is sequentially connected with a wood grain-like compression roller device 40 and a shaping cooling mold 50.
Specifically, a feed inlet 21 is formed in one side of the co-extrusion mold 20 close to the conveyor 10, an extrusion cavity 22 communicated with the feed inlet 21 is formed in the co-extrusion mold 20, and glue inlet channels 23 used for communicating the extrusion cavity 22 and the co-extruder 30 are formed in two sides of the co-extrusion mold 20.
Referring to fig. 4, the glue inlet channel 23 includes a glue inlet 231 connected to the co-extruder 30, and a hot runner 232 communicating the glue inlet 231 with the extrusion cavity 22, and a glue inlet ring 233 is sleeved in the glue inlet 231. Advance to glue ring 233 and have the effect of location, advance to glue ring 233 and co-extruder 30's discharge gate precision fit, guarantee that the raw materials that co-extruder 30 extrudes can not reveal. The width of the hot runner 232 gradually narrows from the side close to the glue inlet 231 to the side close to the extrusion cavity 22, so that the glue inlet pressure is improved, and the molding quality of the profile is improved.
The co-extruder 30 comprises a first co-extruder 31 and a second co-extruder 32 which are sequentially arranged on two sides of the co-extrusion mold 20 along the conveying direction of the metal layer 1, and the extrusion cavity 22 comprises a first extrusion cavity 221 communicated with the first co-extruder 31 and a second extrusion cavity 222 communicated with the second co-extruder 32.
The conveyor 10 conveys the metal layer 1 into the co-extrusion die 20, the adhesive material formed by mixing the hot melt adhesive, the adhesive and the polyurethane adhesive is placed into the feed hopper of the first co-extruder 31, the adhesive melt adhesive material is extruded out through the single screw rod in the first co-extruder 31 and enters the first extrusion cavity 221 through the adhesive inlet channel 23, and the adhesive layer 2 is coated on the periphery of the metal layer 1. The PE modified material is placed into a feed hopper of the first co-extruder 31, the PE molten glue material is extruded out through a single screw of the second co-extruder 32 and enters the second extrusion cavity 222 through the glue inlet channel 23 to be coated on the periphery of the bonding layer 2, and then the co-extruded section with a three-layer structure is formed through extrusion.
Further, when the co-extruded section bar is not cooled after being extruded and formed, the co-extruded section bar is cold-rolled and embossed through the wood grain embossing roller of the wood grain embossing roller device 40 through the wood grain embossing roller device 40 arranged at the outlet of the co-extrusion die 20, and then the strip-shaped wood grain effect is formed. The co-extruded section after embossing is shaped and cooled by a shaping and cooling die 50 to obtain a finished co-extruded section. The PE modified material and the profile co-extrusion device are adopted for co-extrusion molding, so that the co-extruded profile is endowed with good rigidity and bending resistance, good compression resistance, wear resistance and corrosion resistance, can be used as a bearing part, and greatly expands the application range.
In conclusion, the PE modified material prepared by the process of the PE modified material in the scheme of the invention is used as a surface material to reduce the water absorption rate of the profile, so that the purposes of aging improvement and pollution resistance are achieved. The extrusion forming of the co-extrusion section with a three-layer structure and wood grains is realized, the appearance quality, bending resistance and deformation resistance of the section are greatly improved, the section is compatible with the high precision and high strength of a metal section, and has the advantages of wear resistance, corrosion resistance, static resistance, environmental protection and the like, and the product quality is improved.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (10)
1. A manufacturing process of a weather-resistant PE modified material is characterized by comprising the following steps: the method comprises the following steps:
s100: the following raw materials are weighed according to the mixture ratio of the components: 1-99% of HDPE, 1-10% of propylene glycol butyl ether, 1-70% of wear-resisting agent, 0.1-20% of delustering agent, 0-10% of lubricant, 1-20% of antistatic agent, 1-15% of hexamethylenetetramine, 0.01-10% of heat stabilizer and 0.01-10% of UV stabilizer; the UV stabilizer is a mixture of sodium acetate, chlorinated polyethylene and methyl hydroxybenzoate; the wear-resisting agent is a mixture of various hydroxyl silicone oil, nano zinc oxide, titanium nitride powder and graphene oxide;
s200: mixing the HDPE, the wear-resisting agent and the heat stabilizer according to a formula ratio, adding the mixture into a reaction device, fully stirring the mixture at the temperature of 100 ℃ and 120 ℃, adding propylene glycol butyl ether, continuously stirring the mixture for reaction for 2 to 3H, and drying the mixture after the reaction is finished to obtain a material mixture A; mixing the flatting agent, the antistatic agent, the hexamethylenetetramine and the UV stabilizer according to a formula ratio, stirring and mixing materials for 1-2H at the temperature of 60-80 ℃, drying, standing and cooling to obtain a material mixture B;
s300: placing the mixture A and the mixture B obtained in the step S200 into a mixer for high-speed stirring, setting the drying temperature of the mixer to be 150-180 ℃, mixing for 2-3H, naturally cooling to 40 ℃, and discharging;
s400: adding the raw materials obtained in the step S300 into a granulator for heating, kneading and bonding, wherein the length-diameter ratio of the granulator is 33: 52, the granulation temperature is 180-250 ℃, the screw rotating speed is 300-500r/min, and the PE modified material particles are prepared by water granulation.
2. The process for preparing the weather-resistant PE modified material as claimed in claim 1, wherein: the wear-resisting agent comprises the following components in percentage by weight: 10-40% of hydroxyl silicone oil, 5-20% of nano zinc oxide, 10-30% of titanium nitride powder and 5-25% of graphene oxide; the UV stabilizer comprises the following components in percentage by weight: 20-50% of sodium acetate, 15-40% of chlorinated polyethylene and 20-30% of methyl hydroxybenzoate.
3. The process for preparing the weather-resistant PE modified material as claimed in claim 2, wherein: the preparation process of the wear-resisting agent comprises the following steps: adding hydroxyl silicone oil, titanium nitride powder and graphene oxide into a stirring device according to a ratio, heating to 100-150 ℃, uniformly stirring, adding a nano zinc oxide and hydrazine hydrate solution, carrying out reflux reaction for 3-5H, and distilling, washing and drying to obtain the wear-resistant agent.
4. A co-extruded profile characterized by: the PE modified material comprises a metal layer, and an adhesive layer and a modified material layer which are sequentially coated on the metal layer from inside to outside, wherein the modified material layer is the PE modified material prepared by the preparation process of claim 1.
5. The co-extruded profile of claim 4, wherein: the bonding layer is formed by mixing one or more of hot melt adhesive, adhesive and polyurethane adhesive; the metal layer is made of one of aluminum alloy, galvanized iron and stainless steel.
6. The co-extruded profile of claim 4, wherein: and strip-shaped wood grains are formed on the modified material layer.
7. A profile co-extrusion apparatus for extrusion molding the co-extruded profile of claim 2, characterized in that: the metal layer conveying device comprises a co-extrusion die (20), a conveyor (10) for conveying the metal layer into the co-extrusion die (20), and two co-extruders (30) which are respectively arranged at two sides of the co-extrusion die (20) and communicated with the co-extrusion die (20); and the outlet of the co-extrusion die (20) is sequentially connected with a wood grain imitation compression roller device (40) and a shaping cooling die (50).
8. The profile co-extrusion apparatus as claimed in claim 7, wherein: a feed inlet (21) is formed in one side, close to the conveyor (10), of the co-extrusion die (20), and an extrusion cavity (22) communicated with the feed inlet (21) is formed in the co-extrusion die (20); and two sides of the co-extrusion die (20) are provided with glue inlet channels (23) for communicating the extrusion cavity (22) with the co-extruder (30).
9. The profile co-extrusion apparatus as in claim 8, wherein: the glue inlet channel (23) comprises a glue inlet (231) which can be connected with the co-extruder (30) and a hot runner (232) which is communicated with the glue inlet (231) and the extrusion cavity (22); the glue inlet (231) is internally sleeved with a glue inlet ring (233).
10. The profile co-extrusion apparatus as in claim 9, wherein: the width of the hot runner (232) is gradually narrowed from one side close to the glue inlet (231) to one side close to the extrusion cavity (22).
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| CN202011407355.4A CN112693093A (en) | 2020-12-04 | 2020-12-04 | Manufacturing process of weather-resistant PE modified material and profile co-extrusion device |
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| CN202011407355.4A CN112693093A (en) | 2020-12-04 | 2020-12-04 | Manufacturing process of weather-resistant PE modified material and profile co-extrusion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157793A (en) * | 2022-04-19 | 2022-10-11 | 深圳市天诺通光电科技有限公司 | Decorative composite base material, preparation process and application thereof |
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| CN107459709A (en) * | 2017-08-28 | 2017-12-12 | 吴江市金鑫塑料厂 | A kind of high-strength abrasion-proof plastics |
| CN108189357A (en) * | 2017-12-27 | 2018-06-22 | 安徽森泰木塑集团股份有限公司 | The three-layer co-extruded technique of a kind of PE, hot melt adhesive, aluminium alloy |
| CN110818982A (en) * | 2019-11-11 | 2020-02-21 | 湖南工业大学 | Wood-plastic profile co-extrusion fabric |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107459709A (en) * | 2017-08-28 | 2017-12-12 | 吴江市金鑫塑料厂 | A kind of high-strength abrasion-proof plastics |
| CN108189357A (en) * | 2017-12-27 | 2018-06-22 | 安徽森泰木塑集团股份有限公司 | The three-layer co-extruded technique of a kind of PE, hot melt adhesive, aluminium alloy |
| CN110818982A (en) * | 2019-11-11 | 2020-02-21 | 湖南工业大学 | Wood-plastic profile co-extrusion fabric |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115157793A (en) * | 2022-04-19 | 2022-10-11 | 深圳市天诺通光电科技有限公司 | Decorative composite base material, preparation process and application thereof |
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Address after: 516321 twelve Dwu Tang area, Daling Town, Huidong County, Huizhou, Guangdong Applicant after: MEIXIN SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 516321 twelve Dwu Tang area, Daling Town, Huidong County, Huizhou, Guangdong Applicant before: Huidong Meixin Plastic Lumber Products Manufacturing Co.,Ltd. |
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Application publication date: 20210423 |