CN111117065A - High-gloss, low-VOC and scratch-resistant PP material and preparation method and device thereof - Google Patents
High-gloss, low-VOC and scratch-resistant PP material and preparation method and device thereof Download PDFInfo
- Publication number
- CN111117065A CN111117065A CN201911360304.8A CN201911360304A CN111117065A CN 111117065 A CN111117065 A CN 111117065A CN 201911360304 A CN201911360304 A CN 201911360304A CN 111117065 A CN111117065 A CN 111117065A
- Authority
- CN
- China
- Prior art keywords
- resin
- scratch
- pearlescent
- section
- machine barrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of 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
- 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
- B29C48/92—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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention belongs to the technical field of material processing, and relates to a high-gloss, low-VOC and scratch-resistant PP material, and a preparation method and a device thereof, wherein the PP material comprises the following raw materials in parts by weight: PP resin: 91.0-98.0 parts; pearl resin: 0.1-2.0 parts; silicone oil: 0.05-0.1 part; extracting agent: 0.5-2.0 parts; adsorbent: 0.5-1.0 part; thermal stabilizer: 0.2 to 0.6; scratch resistance agent: 0.5-3.0 parts of the pearlescent resin, the pearlescent resin is added from a pearlescent resin feeding device close to the head end of an extruder in the preparation process, the integrity of the size of the pearlescent resin in the preparation process is greatly maintained, a part of the pearlescent resin is selectively dispersed on the surface layer of the plastic, and the content of the pearlescent resin on the surface layer is improved, so that the glossiness of the PP material is greatly improved, the scratch resistance is also improved, the total using amount of the pearlescent resin is reduced, the cost of the composite material is reduced, and compared with the same high-glossiness material prepared by the traditional method, the impact toughness and the processability are also greatly improved.
Description
Technical Field
The invention belongs to the technical field of material processing, and relates to a high-gloss, low-VOC and scratch-resistant PP material, and a preparation method and a device thereof.
Background
Along with social development, people have higher and higher requirements on beauty, and high-gloss PP materials are applied more and more widely. The traditional high-gloss PP material is realized by spraying primer firstly and then spraying high-gloss finish paint or electroplating, and the like, because the primer is a thermosetting material and is difficult to melt again, the recycling performance of a plastic product after paint spraying is poor, and the reuse can be influenced; the spraying process is complicated, and the rejection rate is high; the primer contains a large amount of toxic and harmful organic solvents, is easy to generate toxic and harmful gas and dust, seriously harms human health, and simultaneously causes the problems of environmental pollution, energy waste and the like. In addition, the PP material may release harmful Volatile Organic Compounds (VOCs) to various degrees during high temperature processing and use due to the influence of polymerization process, catalyst, oxide residue, short chain oligomers, etc. Meanwhile, due to the limitation of self-performance, the strength, stability, processability, functionality and the like of the plastic cannot meet the use requirements mostly, and the plastic cannot be directly used for producing plastic products. At present, the performance of the material is improved by adding functional additives, and the commonly used functional additives such as heat stabilizers, scratch resistance agents and the like can bring harmful VOC (volatile organic compounds), have abnormal odor, are extremely unfavorable for people using the material in a relatively closed environment, and seriously harm the environment and the health.
In the past decades, considerable researchers have done much work on environmental protection and high gloss, and the method adopted at present is to compound resin with one or more of high gloss resin, brightener and pearlescent resin to achieve the purpose of environmental protection and high gloss, but the effect is limited at present. The pearlescent resin which is a common material for improving the glossiness of the PP resin has quite high glossiness, but the size of the pearlescent resin is greatly damaged due to the influence of temperature, shearing and the like in the material mixing process and the material processing process, and meanwhile, the pearlescent resin is also damaged to a certain extent due to the fact that the feeding mode of a traditional extruder is pushing and conveying through a screw. Thereby seriously affecting the gloss of the composite. Because the traditional extrusion processing method has long action time of the pearl resin and the PP resin, the pearl resin can be uniformly dispersed in the PP resin, and the selective dispersion is difficult to realize, so that the content of the pearl resin dispersed on the surface layer is relatively less. Before processing, in the process of mixing with other materials, the content of the pearlescent resin is low, the density is low, and uniform dispersion in other resins is difficult to realize.
Disclosure of Invention
In view of the above, the invention provides a high-gloss, low-VOC and scratch-resistant PP material, and a preparation method and a device thereof, in order to solve the problems that the traditional extruder can cause serious damage to the dimensional integrity of the pearlescent resin and affect the gloss of a composite material by means of screw extrusion conveying and shearing extrusion processing, and the pearlescent resin cannot be uniformly dispersed in the feeding process, so that stable blanking is difficult.
In order to achieve the purpose, the invention provides a high-gloss, low-VOC and scratch-resistant PP material which comprises the following raw materials in parts by weight: PP resin: 91-98 parts of a binder; pearl resin: 0.1-2.0 parts; silicone oil: 0.05-0.1 part; extracting agent: 0.5-2.0 parts; adsorbent: 0.5-1.0 part; thermal stabilizer: 0.2-0.6 part; scratch resistance agent: 0.5 to 3.0 parts.
Further, the pearl resin is one of glass pearl powder or artificially synthesized pearl powder; the silicone oil is polyether modified silicone oil; the extractant is one or a mixture of more than two of alkaline extractant and acidic extractant; the adsorbent is one or a mixture of more than two of synthetic adsorbent and natural inorganic adsorbent, the heat stabilizer is one or two of antioxidant 1010 and antioxidant 168, and the scratch-resistant agent is silicone.
A preparation method of a PP material with high gloss, low VOC and scratch resistance comprises the following steps:
A. weighing PP resin, pearlescent resin, silicone oil, an extracting agent, an adsorbent, a heat stabilizer and a scratch-resistant agent for later use;
B. the PP resin, the silicone oil, the extracting agent, the heat stabilizer and the scratch-resistant agent are weighed according to the proportion, are mixed and then are added through a main feeding port of an extruder, the mixture firstly passes through a conveying section of a machine barrel through a screw, then enters an extraction melting section of the machine barrel for heating and melting, and is subjected to vacuum extraction through a vacuum port I on the melting section after being fully extracted;
C. the melted mixture enters a plasticizing section of a machine barrel for plasticizing treatment, meanwhile, an adsorbent is added from a side feeding port, vacuum extraction is carried out again through a vacuum port II on the plasticizing section, and the pearlescent resin is added through a pearlescent resin feeding device close to a machine head;
D. and finally, drying the cooled and solidified mixture in vacuum to prepare the PP material with high gloss, low VOC and scratch resistance.
Further, the temperature of the conveying section of the machine barrel in the step B is 50-70 ℃; the temperature of the extraction melting section of the machine barrel is gradually increased within 170-200 ℃ along the screw precession direction; the temperature of the plasticizing section of the machine barrel is gradually increased within 200-230 ℃ along the screw precession direction.
Furthermore, the vacuum degree of the vacuum port I and the vacuum port II is below-0.08 MPa.
Further, the rotating speed of the screw is 350-420 rpm.
A device for preparing a high-gloss, low-VOC and scratch-resistant PP material sequentially comprises a machine barrel and a machine head which are connected with each other, wherein a screw rod which is matched with the machine barrel to work is arranged in the machine barrel, and the machine barrel consists of a conveying section, an extraction melting section and a plasticizing section; the front end of the conveying section is provided with a main feeding port; the tail end of the extraction melting section is provided with a vacuum port I; the front end of the plasticizing section is provided with a side feeding port, the middle part of the plasticizing section is provided with a vacuum port II, and the plasticizing section is close to the machine head end and is provided with a pearlescent resin feeding device.
Furthermore, the pearlescent resin feeding device comprises a weightlessness scale and a storage bin with a gate valve at the bottom, the gate valve is in signal connection with the weightlessness scale, the bottom of the storage bin is connected with a scale bin, sensors in signal connection with the weightlessness scale are mounted on two sides of the scale bin, the bottom of the scale bin is connected with a vibration feeding mechanism, an electromagnetic vibration exciter and a driving slot body are mounted between the weightlessness scale and the vibration feeding mechanism, and the electromagnetic vibration exciter is connected with the driving slot body.
Further, the vibration feeding mechanism comprises a vibration bin communicated with the weighing bin, a vibration slideway arranged at the bottom of the vibration bin and a vibrator arranged on the vibration bin and connected with the electromagnetic vibration exciter through signals.
The invention has the beneficial effects that:
compared with the traditional method for extruding, conveying and shearing by using a screw, the preparation method of the PP material with high gloss, low VOC and scratch resistance disclosed by the invention has the following advantages:
(1) the action principle and the purpose of the pearlescent resin added from the pearlescent resin feeding device close to the head end of the extruder in the preparation process of the high-gloss, low-VOC and scratch-resistant PP disclosed by the invention are completely different from those of the traditional method, even contradict with each other, and the traditional shearing extrusion processing principle is to utilize the heating melting and shearing mixing of a screw rod so as to ensure that all components of the material are uniformly dispersed as much as possible. The principle of the method for adding the pearlescent resin into the molten plastic melt from the pearlescent resin feeding device close to the head end of the extruder is that the screw of the section has no shearing and only plays a role of conveying, the interaction time is short, the integrity of the size is greatly reserved, and the size retention rate is improved to more than 60 percent from the traditional 30 percent. Owing to the short interaction time, the pearlescent resin has no time to migrate into the inner layer of the plastic melt, and the density (0.15-0.45 g/cm)3) Specific to plastic solution (0.9-0.95 g/cm)3) And the prepared PP material has greatly improved glossiness according to the principle that the more the pearlescent resins are, the larger the size is, and the higher the glossiness is.
(2) The device for preparing the PP material with high gloss, low VOC and scratch resistance solves the problem that the traditional low-content (0.1-2.0%) material or auxiliary agent can only be mixed with the high-content material and then fed, realizes online high-precision independent feeding, and greatly improves the content precision and feeding stability in the material; meanwhile, the damage to the integrity of the pearlescent resin in the process of mixing the materials is reduced.
(3) The device for preparing the PP with high gloss, low VOC and scratch resistance is provided with the vibration feeding mechanism, so that the problem of uneven pushing and feeding of a screw of a traditional extruder is solved, and the damage to the integrity of the pearlescent resin in the rotating feeding process of the traditional screw is greatly reduced. Therefore, the pearl resin can be stably distributed in PP, and meanwhile, the integrity of the size is further improved, so that the glossiness can be greatly improved.
(4) In the preparation process of the high-gloss, low-VOC and scratch-resistant PP material disclosed by the invention, the extraction agent and the adsorbent are adopted at the same time, harmful volatile matters contained in PP resin and an auxiliary agent in the composite material and generated in the processing process are removed in stages on an extruder, and the multi-stage vacuum extraction is adopted, so that the residue of harmful volatile organic matters in the composite material is greatly reduced, the secondary pollution caused by the use of an organic extraction agent is avoided, and the influence on the performance of a base material is also reduced; finally, the PP material with good luster, good scratch resistance, less harmful volatile substances (VOC) and small taste is prepared.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a device for preparing a high-gloss, low-VOC, scratch-resistant PP material according to the present invention;
FIG. 2 is a schematic structural view of a pearlescent resin feeding device of the present invention;
fig. 3 is a schematic diagram of a pearlescent resin feeding device of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only, and not in the form of limitation; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent actual product sizes; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
The extractant BYK-P4200 used in the embodiment of the invention is purchased from Degussa, the adsorbent XC01 is purchased from Maanshan Kelisi chemical industry, and the particle sizes of the adopted glass bead light and the artificially synthesized pearl light are both 100-200 um.
The device for preparing the high-gloss, low-VOC and scratch-resistant PP material sequentially comprises a machine barrel and a machine head which are connected with each other, wherein a screw rod matched with the machine barrel for working is rotatably arranged in the machine barrel, and the material is conveyed forwards through the rotation of the screw rod. The machine barrel consists of a conveying section, an extraction melting section and a plasticizing section; the conveying section is divided into a zone 1, a zone 2 and a zone 3, and the main feeding port is arranged on the zone 1; the extraction melting section is divided into a zone 4, a zone 5, a zone 6 and a zone 7, and the vacuum port I is arranged on the zone 7; the plasticizing section is divided into an 8 area, a 9 area, a 10 area, an 11 area and a 12 area, a side feeding port is arranged on the 8 area, a vacuum port II is arranged on the 10 area, a pearl resin feeding device is arranged on the 11 area, and the 12 area is connected with the machine head.
The pearlescent resin feeding device comprises a weightlessness scale and a storage bin with a gate valve at the bottom, the gate valve is in signal connection with the weightlessness scale, the bottom of the storage bin is connected with a scale bin, sensors in signal connection with the weightlessness scale are arranged on two sides of the scale bin, the bottom of the scale bin is connected with a vibration feeding mechanism, an electromagnetic vibration exciter and a driving tank body are arranged between the weightlessness scale and the vibration feeding mechanism, and the electromagnetic vibration exciter is connected with the driving tank body. The vibration feeding mechanism comprises a vibration bin communicated with the weighing bin, a vibration slideway arranged at the bottom of the vibration bin and a vibrator arranged on the vibration bin and in signal connection with the electromagnetic vibration exciter. The vibration feeding mechanism conveys materials horizontally forwards by using the principle of electromagnetic vibration. The electromagnetic vibration exciter drives a vibration bin on the vibration feeding mechanism to vibrate and discharge through the driving groove body.
When the sensors on the two sides of the weighing bin detect that the material is lower than a preset lower limit, opening the gate valve to feed the material from the storage bin; when the sensors on the two sides of the material weighing bin detect that the material is higher than the preset upper limit, the gate valve is closed to stop feeding. When the material flow is greater than a set value, the sensor of the material weighing bin sends a signal to reduce the vibration frequency of the electromagnetic vibration exciter, so that the feeding amount of the vibration feeding mechanism is reduced, and when the material flow is less than the set value, the sensor of the material weighing bin sends a signal to improve the vibration frequency of the electromagnetic vibration exciter, so that the feeding amount of the vibration feeding mechanism is improved until the material flow is balanced. The electromagnetic vibration exciter adjusts the vibration speed of the vibrator on the vibration storage bin according to the flow of the material, the damage to the integrity of the pearl resin in the traditional screw rotating feeding process is reduced, the pearl resin can be stably distributed in PP, the integrity of the size is greatly improved, and the glossiness can be greatly improved.
Example 1
As shown in fig. 1, the preparation method of the high-gloss, low-VOC and scratch-resistant PP material comprises the following steps:
A. weighing 95.4 parts of PP resin, 0.1 part of glass pearl powder, 0.1 part of polyether modified silicone oil, 2.0 parts of extracting agent, 1.0 part of adsorbent, 0.4 part of heat stabilizer (0.2 part of each of antioxidant 1010 and antioxidant 168) and 1.0 part of silicone powder for later use;
B. mixing and adding PP resin, polyether modified silicone oil, an extracting agent, a heat stabilizer and silicone powder which are weighed according to a ratio into a machine barrel, enabling a mixture to firstly pass through a conveying section of the machine barrel through a screw, enabling the rotation speed of the screw to be 400rpm, enabling the temperatures of a zone 1, a zone 2 and a zone 3 of the conveying section to be respectively 50 ℃, 60 ℃ and 70 ℃, then enabling the mixture to enter an extraction melting section 4, a zone 5, a zone 6 and a zone 7 of the machine barrel to be respectively 170 ℃, 180 ℃, 190 ℃ and 200 ℃, fully extracting, and then performing vacuum extraction through a vacuum port I on the zone 7, wherein the vacuum degree of the vacuum port I is-0.08 MPa;
C. the melted mixture enters a plasticizing section of a machine barrel to be plasticized, the temperatures of an 8 region, a 9 region, a 10 region, a 11 region and a 12 region of the plasticizing section are respectively 200 ℃, 210 ℃, 220 ℃, 230 ℃ and 230 ℃, meanwhile, an adsorbent is added from a side feeding port on the 8 region, vacuum extraction is carried out again through a vacuum port II on the 10 region, glass pearl powder is added through a pearl resin feeding device which is close to a machine head 11 region and is shown in figure 2, the vacuum degree of the vacuum port II is-0.08 MPa, and the working principle of the pearl resin feeding device is shown in figure 3;
D. and finally, drying the cooled and solidified mixture in vacuum to prepare the PP material with high gloss, low VOC and scratch resistance.
Example 2
A preparation method of a PP material with high gloss, low VOC and scratch resistance comprises the following steps:
A. weighing 94.3 parts of PP resin, 0.2 part of glass pearl powder, 0.1 part of polyether modified silicone oil, 2.0 parts of extracting agent, 1.0 part of adsorbent, 0.4 part of heat stabilizer (0.2 part of each of antioxidant 1010 and antioxidant 168) and 2.0 parts of silicone powder for later use;
B. mixing and adding PP resin, polyether modified silicone oil, an extracting agent, a heat stabilizer and silicone powder which are weighed according to a ratio into a machine barrel, enabling a mixture to firstly pass through a conveying section of the machine barrel through a screw, enabling the rotation speed of the screw to be 400rpm, enabling the temperatures of a zone 1, a zone 2 and a zone 3 of the conveying section to be respectively 50 ℃, 60 ℃ and 70 ℃, then enabling the mixture to enter an extraction melting section 4, a zone 5, a zone 6 and a zone 7 of the machine barrel to be respectively 170 ℃, 180 ℃, 200 ℃ and 200 ℃, fully extracting, and then performing vacuum extraction through a vacuum port I on the zone 7, wherein the vacuum degree of the vacuum port I is-0.08 MPa;
C. the melted mixture enters a plasticizing section of a machine barrel to be plasticized, the temperatures of an 8 region, a 9 region, a 10 region, a 11 region and a 12 region of the plasticizing section are respectively 200 ℃, 210 ℃, 220 ℃, 230 ℃ and 230 ℃, meanwhile, an adsorbent is added from a side feeding port on the 8 region, vacuum extraction is carried out again through a vacuum port II on the 10 region, glass pearl powder is added through a pearl resin feeding device on a region close to a machine head 11, and the vacuum degree of the vacuum port II is-0.08 MPa;
D. and finally, drying the cooled and solidified mixture in vacuum to prepare the PP material with high gloss, low VOC and scratch resistance.
Example 3
A preparation method of a PP material with high gloss, low VOC and scratch resistance comprises the following steps:
A. weighing 94.3 parts of PP resin, 0.2 part of artificially synthesized pearl powder, 0.1 part of polyether modified silicone oil, 2.0 parts of extracting agent, 1.0 part of adsorbent, 0.4 part of heat stabilizer (0.2 part of each of antioxidant 1010 and antioxidant 168) and 2.0 parts of silicone powder for later use;
B. mixing and adding PP resin, polyether modified silicone oil, an extracting agent, a heat stabilizer and silicone powder which are weighed according to a ratio into a machine barrel, enabling a mixture to firstly pass through a conveying section of the machine barrel through a screw, enabling the rotation speed of the screw to be 400rpm, enabling the temperatures of a zone 1, a zone 2 and a zone 3 of the conveying section to be respectively 50 ℃, 60 ℃ and 70 ℃, then enabling the mixture to enter an extraction melting section 4, a zone 5, a zone 6 and a zone 7 of the machine barrel to be respectively 170 ℃, 180 ℃, 190 ℃ and 200 ℃, fully extracting, and then performing vacuum extraction through a vacuum port I on the zone 7, wherein the vacuum degree of the vacuum port I is-0.08 MPa;
C. the melted mixture enters a plasticizing section of a machine barrel to be plasticized, the temperatures of an 8 region, a 9 region, a 10 region, a 11 region and a 12 region of the plasticizing section are respectively 200 ℃, 210 ℃, 220 ℃, 230 ℃ and 230 ℃, meanwhile, an adsorbent is added from a side feeding port on the 8 region, vacuum extraction is carried out again through a vacuum port II on the 10 region, the artificially synthesized pearl powder is added through a pearl resin feeding device on a region close to a machine head 11, and the vacuum degree of the vacuum port II is-0.08 MPa;
D. and finally, drying the cooled and solidified mixture in vacuum to prepare the PP material with high gloss, low VOC and scratch resistance.
Comparative example 1
A preparation method of a PP material with high gloss, low VOC and scratch resistance comprises the following steps:
A. weighing 94.3 parts of PP resin, 0.2 part of artificially synthesized pearl powder, 0.1 part of polyether modified silicone oil, 2.0 parts of extracting agent, 1.0 part of adsorbent, 0.4 part of heat stabilizer (0.2 part of each of antioxidant 1010 and antioxidant 168) and 2.0 parts of silicone powder for later use;
B. mixing PP resin, artificially synthesized pearl powder, polyether modified silicone oil, an extracting agent, a heat stabilizer, silicone powder and an adsorbent which are weighed according to a ratio, adding the mixture into a machine barrel, enabling the mixture to firstly pass through a conveying section of the machine barrel through a screw, enabling the rotation speed of the screw to be 400rpm, enabling the temperatures of a zone 1, a zone 2 and a zone 3 of the conveying section to be respectively 50 ℃, 60 ℃ and 70 ℃, then enabling the mixture to enter an extraction melting section zone 4, a zone 5, a zone 6 and a zone 7 of the machine barrel to be respectively 170 ℃, 180 ℃, 190 ℃ and 200 ℃, fully extracting, and then performing vacuum extraction through a vacuum port I on the zone 7, wherein the vacuum degree of the vacuum port I is-0.08 MPa;
C. the melted mixture enters a plasticizing section of a machine barrel to be plasticized, the temperatures of an 8 region, a 9 region, a 10 region, a 11 region and a 12 region of the plasticizing section are respectively 200 ℃, 210 ℃, 220 ℃, 230 ℃ and 230 ℃, vacuum extraction is carried out again through a vacuum port II on the 10 region, and the vacuum degree of the vacuum port II is-0.08 MPa;
D. and finally, drying the cooled and solidified mixture in vacuum to prepare the PP material with high gloss, low VOC and scratch resistance.
Comparative example 2
A preparation method of a PP material with high gloss, low VOC and scratch resistance comprises the following steps:
A. weighing 92.5 parts of PP resin, 2.0 parts of artificially synthesized pearl powder, 0.1 part of polyether modified silicone oil, 2.0 parts of extracting agent, 1.0 part of adsorbent, 0.4 part of heat stabilizer (0.2 part of each of antioxidant 1010 and antioxidant 168) and 2.0 parts of silicone powder for later use;
B. mixing and adding PP resin, artificially synthesized pearl powder, polyether modified silicone oil, an extracting agent, polyol wax, silicone powder and an adsorbing agent which are weighed according to a ratio into a machine barrel, enabling the mixture to firstly pass through a conveying section of the machine barrel through a screw, enabling the rotation speed of the screw to be 400rpm, enabling the temperatures of a zone 1, a zone 2 and a zone 3 of the conveying section to be respectively 50 ℃, 60 ℃ and 70 ℃, then enabling the mixture to enter an extraction melting section 4, a zone 5, a zone 6 and a zone 7 of the machine barrel to be respectively 170 ℃, 180 ℃, 190 ℃ and 200 ℃, fully extracting, and then performing vacuum extraction through a vacuum port I on the zone 7, wherein the vacuum degree of the vacuum port I is-0.08 MPa;
C. the melted mixture enters a plasticizing section of a machine barrel to be plasticized, the temperatures of an 8 region, a 9 region, a 10 region, a 11 region and a 12 region of the plasticizing section are respectively 200 ℃, 210 ℃, 220 ℃, 230 ℃ and 230 ℃, vacuum extraction is carried out again through a vacuum port II on the 10 region, and the vacuum degree of the vacuum port II is-0.08 MPa;
D. and finally, drying the cooled and solidified mixture in vacuum to prepare the PP material with high gloss, low VOC and scratch resistance.
In order to investigate the properties of the high-gloss, low-VOC and scratch-resistant PP material prepared by the invention, the obtained composite material is placed in an injection molding machine, and is injected into a standard test sample strip according to the conventional injection molding process conditions for carrying out the following performance tests. Specifically, as shown in table 1:
TABLE 1 PP Material Property Table in examples and comparative examples
From the comparison in Table 1, it can be seen that the gloss of examples 1 to 3 is greatly improved compared to comparative examples 1 to 2 at the same content of the pearlescent resin. The odor grade, TOVC, impact toughness and processability are all greatly improved. The main reason is that the pearlescent resin is added from the pearlescent resin feeding device close to the head end of the extruder in the preparation process of the scratch-resistant PP material, so that the dimensional integrity of the pearlescent resin is greatly maintained in the preparation process, a considerable part of the pearlescent resin is selectively dispersed on the surface layer of the plastic, the content of the pearlescent resin on the surface layer is improved, and the glossiness of the PP material is greatly improved; because the content of the surface layer pearl resin is increased, and the scratch resistance of the inorganic pearl resin is far higher than that of the organic PP resin, the scratch resistance of the inorganic pearl resin is improved to a certain extent. Under the condition of the same glossiness (such as example 1 and comparative example 2), because the method of the invention is adopted, the total adding amount of the pearlescent resin is less, and the impact toughness and the processability of the prepared material are greatly improved compared with those of the material prepared by the traditional method. In addition, the extractant and the adsorbent added from the side feeding are adopted, so that the effects of the extractant and the adsorbent are fully exerted, and the negative effects of the extractant and the adsorbent are reduced, thereby effectively improving the smell and TVOC.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (9)
1. The PP material with high gloss, low VOC and scratch resistance is characterized by comprising the following raw materials in parts by weight: PP resin: 91-98.0 parts; pearl resin: 0.1-2.0 parts; silicone oil: 0.05-0.1 part; extracting agent: 0.5-2.0 parts; adsorbent: 0.5-1.0 part; thermal stabilizer: 0.2 to 0.6; scratch resistance agent: 0.5 to 3.0 parts.
2. The high gloss, low VOC, scratch resistant PP material according to claim 1, wherein said pearlescent resin is one of glass pearlescent flakes or synthetic pearlescent flakes; the silicone oil is polyether modified silicone oil; the extractant is one or a mixture of more than two of alkaline extractant and acidic extractant; the adsorbent is one or a mixture of more than two of synthetic adsorbent and natural inorganic adsorbent, the heat stabilizer is one or two of antioxidant 1010 and antioxidant 168, and the scratch-resistant agent is silicone.
3. A preparation method of a PP material with high gloss, low VOC and scratch resistance is characterized by comprising the following steps:
A. weighing PP resin, pearlescent resin, silicone oil, an extracting agent, an adsorbent, a heat stabilizer and a scratch-resistant agent for later use;
B. the PP resin, the silicone oil, the extracting agent, the heat stabilizer and the scratch-resistant agent are weighed according to the proportion, mixed and added through a main feeding port, the mixture firstly passes through a conveying section of a machine barrel through a screw, then enters an extraction melting section of the machine barrel for heating and melting, and after full extraction, vacuum extraction is carried out through a vacuum port I on the melting section;
C. the melted mixture enters a plasticizing section of a machine barrel for plasticizing treatment, meanwhile, an adsorbent is added from a side feeding port, vacuum extraction is carried out again through a vacuum port II on the plasticizing section, and the pearlescent resin is added through a pearlescent resin feeding device close to a machine head;
D. and finally, drying the cooled and solidified mixture in vacuum to prepare the PP material with high gloss, low VOC and scratch resistance.
4. The preparation method of the high-gloss, low-VOC and scratch-resistant PP material as claimed in claim 3, wherein the conveying section temperature of the cylinder in the step B is 50-70 ℃; the temperature of the extraction melting section of the machine barrel is gradually increased within 170-200 ℃ along the screw precession direction; the temperature of the plasticizing section of the machine barrel is gradually increased within 200-230 ℃ along the screw precession direction.
5. The method of claim 3, wherein the vacuum level at vacuum port I and vacuum port II is less than-0.08 MPa.
6. The method for preparing the high-gloss, low-VOC and scratch-resistant PP material according to claim 3, wherein the rotation speed of the screw is 350-420 rpm.
7. A device for preparing a high-gloss, low-VOC and scratch-resistant PP material is characterized by sequentially comprising a machine barrel and a machine head of an extruder which are connected with each other, wherein a screw rod matched with the machine barrel for working is arranged in the machine barrel, and the machine barrel consists of a conveying section, an extraction melting section and a plasticizing section; the front end of the conveying section is provided with a main feeding port; the tail end of the extraction melting section is provided with a vacuum port I; the front end of the plasticizing section is provided with a side feeding port, the middle part of the plasticizing section is provided with a vacuum port II, and the plasticizing section is close to the machine head end and is provided with a pearlescent resin feeding device.
8. The apparatus for preparing high gloss, low VOC, scratch resistant PP material according to claim 7, wherein the pearlescent resin feeding apparatus comprises a weightlessness scale and a storage bin having a gate valve at the bottom, the gate valve is connected with the weightlessness scale, the bottom of the storage bin is connected with a scale bin, sensors connected with the weightlessness scale are installed at two sides of the scale bin, the bottom of the scale bin is connected with a vibration feeding mechanism, an electromagnetic vibration exciter and a driving slot body are installed between the weightlessness scale and the vibration feeding mechanism, and the electromagnetic vibration exciter is connected with the driving slot body.
9. The apparatus for preparing high gloss, low VOC, scratch resistant PP material according to claim 8, wherein the vibration feeding mechanism comprises a vibration bin communicated with the weighing bin, a vibration chute installed at the bottom of the vibration bin, and a vibrator installed on the vibration bin and connected with the electromagnetic exciter through signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360304.8A CN111117065B (en) | 2019-12-25 | 2019-12-25 | High-gloss, low-VOC and scratch-resistant PP material and preparation method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360304.8A CN111117065B (en) | 2019-12-25 | 2019-12-25 | High-gloss, low-VOC and scratch-resistant PP material and preparation method and device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111117065A true CN111117065A (en) | 2020-05-08 |
| CN111117065B CN111117065B (en) | 2023-04-25 |
Family
ID=70502503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911360304.8A Active CN111117065B (en) | 2019-12-25 | 2019-12-25 | High-gloss, low-VOC and scratch-resistant PP material and preparation method and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111117065B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105199294A (en) * | 2015-09-25 | 2015-12-30 | 银禧工程塑料（东莞）有限公司 | High-gloss spraying-free ABS (acrylonitrile butadiene styrene) composite material with special effect and preparation method thereof |
| CN106905611A (en) * | 2017-03-20 | 2017-06-30 | 广东圆融新材料有限公司 | A kind of high glaze exempts from spray coating polypropylene composite and preparation method thereof |
| CN107236177A (en) * | 2017-07-21 | 2017-10-10 | 重庆科聚孚工程塑料有限责任公司 | A kind of low smell, low VOC composite polyethylene materials and its preparation facilities and method |
| CN107383611A (en) * | 2017-08-15 | 2017-11-24 | 重庆科聚孚工程塑料有限责任公司 | A kind of low smell, low VOC PP composite materials and its preparation facilities and method |
| CN109679209A (en) * | 2018-12-25 | 2019-04-26 | 重庆科聚孚工程塑料有限责任公司 | The PP composite material and preparation method of metal-like |
-
2019
- 2019-12-25 CN CN201911360304.8A patent/CN111117065B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105199294A (en) * | 2015-09-25 | 2015-12-30 | 银禧工程塑料（东莞）有限公司 | High-gloss spraying-free ABS (acrylonitrile butadiene styrene) composite material with special effect and preparation method thereof |
| CN106905611A (en) * | 2017-03-20 | 2017-06-30 | 广东圆融新材料有限公司 | A kind of high glaze exempts from spray coating polypropylene composite and preparation method thereof |
| CN107236177A (en) * | 2017-07-21 | 2017-10-10 | 重庆科聚孚工程塑料有限责任公司 | A kind of low smell, low VOC composite polyethylene materials and its preparation facilities and method |
| CN107383611A (en) * | 2017-08-15 | 2017-11-24 | 重庆科聚孚工程塑料有限责任公司 | A kind of low smell, low VOC PP composite materials and its preparation facilities and method |
| CN109679209A (en) * | 2018-12-25 | 2019-04-26 | 重庆科聚孚工程塑料有限责任公司 | The PP composite material and preparation method of metal-like |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111117065B (en) | 2023-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104403204B (en) | A kind of low VOC polypropylene materials and its production and use | |
| Xie et al. | Plasticizer combinations and performance of wood flour–poly (lactic acid) 3D printing filaments | |
| CN105400226B (en) | A kind of Polyethylene wood plastic composite material of high-modulus | |
| KR101154107B1 (en) | Molded resin containing filler and glass | |
| CN111100419A (en) | High-gloss, low-odor and weather-resistant ABS material and preparation method and device thereof | |
| CN108264749A (en) | A kind of high good surface carbon fiber reinforced polycarbonate composite material of flowing and preparation method thereof | |
| CN104479273B (en) | thermoplastic resin composition for blow molding and preparation method thereof | |
| CN106220956B (en) | The imitation wood section bar and its preparation process prepared using glass fiber reinforced plastic wastes regeneration | |
| CN106084393A (en) | A kind of PE fat moulding material and preparation method thereof | |
| CN102863753B (en) | Matte PCABS (polycarbonate acrylonitrile butadiene styrene) composite material and preparation method thereof | |
| CN107603121A (en) | A kind of ABS3D printing wire rods of resistance to warpage crack resistence and preparation method thereof | |
| CN105936678A (en) | Reinforcing flexibilizer used for 3D printing of ABS, ABS composite material, production method of ABS composite material | |
| CN111113851A (en) | Preparation method and device of high-gloss plastic product | |
| CN110254004A (en) | A kind of PS Antistatic sheet and its processing technology and application | |
| CN106883542A (en) | A kind of heat-resisting antistatic regeneration HIPS of super high impact is material modified and preparation method thereof | |
| CN101353441B (en) | Method and apparatus for modifying waste printed circuit board composite non-metal powder | |
| EP4086304A1 (en) | Cellulose-reinforced polypropylene resin composite material, preparation method therefor and use thereof | |
| CN105482355A (en) | Reinforcing and toughening agent for 3D printing of ABS and ABS composite | |
| CN111100440A (en) | High-gloss, low-odor and flame-retardant PC material and preparation method and device thereof | |
| Whelan | Injection moulding materials | |
| CN111117065A (en) | High-gloss, low-VOC and scratch-resistant PP material and preparation method and device thereof | |
| CN104140634A (en) | Recycled ABS plastic for manufacturing traveling case shell and preparation method thereof | |
| CN104031384A (en) | High-gloss low-warpage nylon 66 material and preparation method thereof | |
| CN103642064B (en) | A kind of regeneration technology of Lauxite and the composite containing regeneration Lauxite | |
| CN107236270A (en) | A kind of polydactyl acid 3D printing filament material and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |