CN111138764A - Polypropylene plate free of metallic color coating and preparation method thereof - Google Patents
Polypropylene plate free of metallic color coating and preparation method thereof Download PDFInfo
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- CN111138764A CN111138764A CN202010005506.7A CN202010005506A CN111138764A CN 111138764 A CN111138764 A CN 111138764A CN 202010005506 A CN202010005506 A CN 202010005506A CN 111138764 A CN111138764 A CN 111138764A
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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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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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
- B32B27/06—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
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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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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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
- C08K3/02—Elements
- C08K3/08—Metals
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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
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
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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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
- C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
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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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
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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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
Abstract
The invention discloses a polypropylene plate free of metal color coating and a preparation method thereof, wherein the polypropylene plate comprises a surface decoration layer and a substrate layer, and the surface decoration layer is prepared from the following raw materials in parts by weight: 90-98 parts of low-melting-index impact-resistant co-polypropylene resin, 0.02-2 parts of aluminum silver powder, 0.5-8 parts of pearl powder, 0.1-2 parts of UV absorbent, 0.1-0.8 part of antioxidant 1010 and 0.2-0.8 part of antioxidant 168, wherein the base material layer is prepared from the following raw materials in parts by weight: 95-99 parts of low-melting-index impact-resistant copolymerized polypropylene resin, 0.5-8 parts of titanium dioxide, 0.1-2 parts of light stabilizer, 0.1-0.8 part of antioxidant 1010 and 0.2-0.8 part of antioxidant 168. Firstly, respectively preparing a surface decoration layer and a substrate layer, and then guiding the surface decoration layer and the substrate layer into a three-roller press for rolling extrusion molding. The appearance effect of the decorative layer on the surface of the plate achieves the coating effect, the coating process is omitted, the cost is greatly reduced, the VOC emission of coating is reduced, and the plate is more environment-friendly.
Description
Technical Field
The invention relates to the technical field of polypropylene plate preparation, in particular to a coating-free polypropylene plate with metallic color and a preparation method thereof.
Background
Polypropylene, PP for short, is a colorless, odorless, nontoxic and semitransparent solid substance. Polypropylene is a thermoplastic synthetic resin with excellent performance, and is widely developed and applied in various fields of machinery, automobiles, electronic appliances, buildings, textiles, packaging, agriculture, forestry, fishery, food industry and the like.
With the demand of high-speed development of consumer markets in China, consumers have higher and higher requirements on the appearance of polypropylene products, and the appearance of the polypropylene products is mainly modified by a coating mode at present. The common polypropylene material has low surface polarity, so that the binding force between the coated surface paint layer and the polypropylene substrate is very low, and the application range of the polypropylene material is greatly limited. The current mature coating process adopts a paint baking process, but has high cost and great environmental pollution.
Disclosure of Invention
The invention aims to provide a polypropylene plate free of metallic coating.
The invention also aims to provide a preparation method of the polypropylene plate free of metal color coating, which is simple in process.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the polypropylene plate free of metal color coating comprises a surface decoration layer and a substrate layer, wherein the surface decoration layer is prepared from the following raw materials in parts by weight: 90-98 parts of low-melting-index impact-resistant co-polypropylene resin, 0.02-2 parts of aluminum silver powder, 0.5-8 parts of pearl powder, 0.1-2 parts of UV absorbent, 0.1-0.8 part of antioxidant 1010 and 0.2-0.8 part of antioxidant 168, wherein the base material layer is prepared from the following raw materials in parts by weight: 95-99 parts of low-melting-index impact-resistant copolymerized polypropylene resin, 0.5-8 parts of titanium dioxide, 0.1-2 parts of light stabilizer, 0.1-0.8 part of antioxidant 1010 and 0.2-0.8 part of antioxidant 168.
Preferably, the thickness of the surface decoration layer is 0.1-0.5mm, and the thickness of the substrate layer is 1-5 mm.
The invention also provides a preparation method of the polypropylene plate free of metal color coating, which comprises the following steps:
the method comprises the following steps: weighing the raw materials according to the formula of the surface decorative layer, adding the raw materials into a vertical mixer for mixing, then adding the mixture into a double-screw extruder for melt extrusion, and cooling and granulating the mixture to prepare the surface decorative layer;
step two: weighing the raw materials according to the formula of the substrate layer, adding the raw materials into a vertical mixer for mixing, then adding the mixture into a double-screw extruder for melt extrusion, and cooling and granulating the mixture to prepare the substrate layer;
step three: and (3) guiding the surface decorative layer and the substrate layer into a three-roll press for roll-in extrusion molding, and rolling to obtain the coating-free metallic polypropylene plate continuously produced in the length direction.
Preferably, in the first step, the temperature of each zone of the twin-screw extruder is as follows: the temperature of the T1 zone is 140-155 ℃, the temperature of the T2 zone is 165-175 ℃, the temperature of the T3 zone is 180-185 ℃, the temperature of the T4-T9 zone is 195-205 ℃, and the temperature of the T mold zone is 190-200 ℃.
Preferably, in the second step, the temperature of each zone of the twin-screw extruder is as follows: the temperature of the T1 zone is 140-155 ℃, the temperature of the T2 zone is 165-175 ℃, the temperature of the T3 zone is 180-185 ℃, the temperature of the T4-T9 zone is 190-200 ℃, and the temperature of the T mold zone is 190-200 ℃.
Preferably, in step three, the temperature of each zone of the main extruder is: the temperature of the T1 zone is 140-155 ℃, the temperature of the T2 zone is 150-160 ℃, the temperature of the T3 zone is 155-170 ℃, the temperature of the T4-T9 zone is 165-185 ℃, and the temperature of the T mold zone is 180-190 ℃; the temperature of each zone of the auxiliary extruder is as follows: the temperature of the T1 zone is 160-165 ℃, the temperature of the T2 zone is 165-175 ℃, the temperature of the T3 zone is 180-185 ℃, the temperature of the T4 zone is 195-205 ℃, and the temperature of the T mold zone is 190-200 ℃.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention can improve the impact toughness of the prepared plate by taking the low-melting-index high-impact polypropylene resin as a main component, and has the advantages of good mechanical property and processability, high quality and low cost;
(2) the weather resistance of the prepared polypropylene plate is improved by adding the light stabilizer and the UV absorbent, so that the outdoor use condition is achieved;
(3) according to the invention, by adding the aluminum silver powder and the pearl powder, the appearance effect of the surface decorative layer of the plate achieves the coating effect, the coating process is omitted, the cost is greatly reduced, the VOC emission during coating is reduced, and the plate is more environment-friendly.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
The polypropylene plate free of metal color coating comprises a surface decoration layer and a substrate layer, wherein the surface decoration layer is prepared from the following raw materials in parts by weight: 95 parts of low-melting-index impact-resistant co-polypropylene resin, 1 part of aluminum silver powder, 2 parts of pearl powder, 0.5 part of UV absorbent, 0.2 part of antioxidant 1010 and 0.6 part of antioxidant 168, wherein the base material layer is prepared from the following raw materials in parts by weight: 96 parts of low-melting-point impact-resistant copolymerized polypropylene resin, 2 parts of titanium dioxide, 0.5 part of light stabilizer, 0.2 part of antioxidant 1010 and 0.6 part of antioxidant 168.
The thickness of the surface decoration layer is 0.2mm, and the surface decoration layer mainly has the functions of providing a good appearance effect and preventing ultraviolet light and visible light aging. The color is silvery white. The thickness of substrate layer is 2mm, and the primary function guarantees that the outward appearance face color is stable for hiding the bottom colour.
The method comprises the following steps: weighing the raw materials according to the formula of the surface decoration layer, adding the raw materials into a vertical mixer for mixing, then adding the mixture into a double-screw extruder for melt extrusion, and cooling and granulating the mixture to prepare a raw material of the surface decoration layer; the temperature of each zone of the double-screw extruder is as follows: the temperature in the T1 zone was 145 deg.C, the temperature in the T2 zone was 175 deg.C, the temperature in the T3 zone was 185 deg.C, the temperature in the T4-T9 zone was 195 deg.C, and the temperature in the T die zone was 200 deg.C.
Step two: weighing the raw materials according to the formula of the base material layer, adding the raw materials into a vertical mixer for mixing, then adding the mixture into a double-screw extruder for melt extrusion, and cooling and granulating the mixture to prepare a raw material of the base material layer; the temperature of each zone of the double-screw extruder is as follows: the temperature in the T1 zone was 150 deg.C, the temperature in the T2 zone was 175 deg.C, the temperature in the T3 zone was 185 deg.C, the temperature in the T4-T9 zone was 195 deg.C, and the temperature in the T die zone was 200 deg.C.
Step three: introducing the surface decorative layer raw material and the base material layer raw material prepared in the first step and the second step into a three-roll calender, wherein the temperature of a roller is 195 ℃, and rolling into a coating-free metallic polypropylene plate continuously produced in the length direction; the temperatures in the various zones of the main extruder were: the temperature of a T1 area is 145 ℃, the temperature of a T2 area is 160 ℃, the temperature of a T3 area is 170 ℃, the temperature of a T4-T9 area is 185 ℃, and the temperature of a T die area is 190 ℃; the temperature of each zone of the auxiliary extruder is as follows: the temperature in the T1 zone was 165 deg.C, the temperature in the T2 zone was 175 deg.C, the temperature in the T3 zone was 185 deg.C, the temperature in the T4 zone was 205 deg.C, and the temperature in the T die zone was 200 deg.C.
Example 2
The utility model provides a polypropylene board of exempting from to coat metallic color, is 0.1 mm's surface decoration layer and 1 mm's substrate layer including thickness, the surface decoration layer is made by the raw materials of following part by weight: 90 parts of low-melting-index impact-resistant co-polypropylene resin, 0.02 part of aluminum silver powder, 0.5 part of pearl powder, 0.1 part of UV absorbent, 0.1 part of antioxidant 1010 and 0.2 part of antioxidant 168, wherein the base material layer is prepared from the following raw materials in parts by weight: 95 parts of low-melting-index impact-resistant copolymerized polypropylene resin, 0.5 part of titanium dioxide, 0.1 part of light stabilizer, 0.1 part of antioxidant 1010 and 0.2 part of antioxidant 168.
The method comprises the following steps: weighing the raw materials according to the formula of the surface decoration layer, adding the raw materials into a vertical mixer for mixing, then adding the mixture into a double-screw extruder for melt extrusion, and cooling and granulating the mixture to prepare a raw material of the surface decoration layer; the temperature of each zone of the double-screw extruder is as follows: the temperature in the T1 zone was 140 deg.C, the temperature in the T2 zone was 165 deg.C, the temperature in the T3 zone was 180 deg.C, the temperature in the T4-T9 zone was 195 deg.C, and the temperature in the T die zone was 190 deg.C.
Step two: weighing the materials according to the formula of the base material layer, adding the materials into a vertical mixer for mixing, then adding the materials into a double-screw extruder for melt extrusion, and preparing the raw materials of the base material layer through cooling and granulation; the temperature of each zone of the double-screw extruder is as follows: the temperature in the T1 zone was 140 deg.C, the temperature in the T2 zone was 165 deg.C, the temperature in the T3 zone was 180 deg.C, the temperature in the T4-T9 zone was 190 deg.C, and the temperature in the T die zone was 190 deg.C.
Step three: introducing the surface decorative layer raw material and the base material layer raw material prepared in the first step and the second step into a three-roll calender, wherein the temperature of a roller is 195 ℃, and rolling into a coating-free metallic polypropylene plate continuously produced in the length direction; the temperatures in the various zones of the main extruder were: the temperature of a T1 area is 140 ℃, the temperature of a T2 area is 150 ℃, the temperature of a T3 area is 155 ℃, the temperature of a T4-T9 area is 165 ℃, and the temperature of a T die area is 180 ℃; the temperature of each zone of the auxiliary extruder is as follows: the temperature in the T1 zone was 160 ℃, the temperature in the T2 zone was 165 ℃, the temperature in the T3 zone was 180 ℃, the temperature in the T4 zone was 195 ℃ and the temperature in the T die zone was 190 ℃.
Example 3
The utility model provides a polypropylene board of exempting from to coat metallic color, is 0.5 mm's surface decoration layer and 5 mm's substrate layer including thickness, the surface decoration layer is made by the raw materials of following part by weight: 98 parts of low-melting-index impact-resistant co-polypropylene resin, 2 parts of aluminum silver powder, 8 parts of pearl powder, 2 parts of UV (ultraviolet) absorbent, 0.8 part of antioxidant 1010 and 0.8 part of antioxidant 168, wherein the base material layer is prepared from the following raw materials in parts by weight: 99 parts of low-melting-point impact-resistant copolymerized polypropylene resin, 8 parts of titanium dioxide, 2 parts of light stabilizer, 0.8 part of antioxidant 1010 and 0.8 part of antioxidant 168.
The method comprises the following steps: weighing the raw materials according to the formula of the surface decoration layer, adding the raw materials into a vertical mixer for mixing, then adding the mixture into a double-screw extruder for melt extrusion, and cooling and granulating the mixture to prepare a raw material of the surface decoration layer; the temperature of each zone of the double-screw extruder is as follows: the temperature in the T1 zone was 155 deg.C, the temperature in the T2 zone was 175 deg.C, the temperature in the T3 zone was 185 deg.C, the temperature in the T4-T9 zone was 205 deg.C, and the temperature in the T die zone was 200 deg.C.
Step two: weighing the materials according to the formula of the base material layer, adding the materials into a vertical mixer for mixing, then adding the materials into a double-screw extruder for melt extrusion, and preparing the raw materials of the base material layer through cooling and granulation; the temperature of each zone of the double-screw extruder is as follows: the temperature in the T1 zone was 155 deg.C, the temperature in the T2 zone was 175 deg.C, the temperature in the T3 zone was 185 deg.C, the temperature in the T4-T9 zone was 200 deg.C, and the temperature in the T die zone was 200 deg.C.
Step three: introducing the surface decorative layer raw material and the base material layer raw material prepared in the first step and the second step into a three-roll calender, wherein the temperature of a roller is 195 ℃, and rolling into a coating-free metallic polypropylene plate continuously produced in the length direction; the temperatures in the various zones of the main extruder were: the temperature of a T1 area is 155 ℃, the temperature of a T2 area is 160 ℃, the temperature of a T3 area is 170 ℃, the temperature of a T4-T9 area is 185 ℃, and the temperature of a T die area is 190 ℃; the temperature of each zone of the auxiliary extruder is as follows: the temperature in the T1 zone was 165 deg.C, the temperature in the T2 zone was 175 deg.C, the temperature in the T3 zone was 185 deg.C, the temperature in the T4 zone was 205 deg.C, and the temperature in the T die zone was 200 deg.C.
The panels prepared in examples 1 to 3 and the sprayed panels were tested by a color difference meter test and a comparative test. The data are as follows in table 1:
TABLE 1
| L | a | b | |
| Spraying plate | 80.32 | 0.15 | -0.8 |
| Example 1 | 79.8 | 0.09 | -1.02 |
| Example 2 | 79.1 | 0.06 | -1.1 |
| Example 3 | 79.3 | 0.07 | -1.05 |
As can be seen from Table 1, when the polypropylene plate without metallic color coating prepared by the invention is compared with a sprayed plate, the delta a representing the difference between red and green is 0.06-0.09, the delta b representing the difference between blue and yellow is-0.22-0.3, the delta L representing the difference between brightness is 0.52-1.22, and the three reach the quality control range.
And in addition, preparing samples of the base material raw material and the spraying piece raw material in the second step, and respectively testing the tensile strength and the notch impact strength of the cantilever beam. The results are given in table 2 below:
TABLE 2
| Tensile Strength (MPa) | Elongation at Break (%) | Notched Izod impact Strength (KJ/m)2) | |
| Spray-coated member | 18.4 | 29 | 12.3 |
| Examples1 | 23.2 | 43.2 | 48.3 |
| Example 2 | 20.9 | 39.1 | 42.6 |
| Example 3 | 21.7 | 41.8 | 43.1 |
Compared with the physical properties of a sprayed part, the polypropylene plate without metallic color coating prepared by the invention has obviously more advantages in performance.
Claims (6)
1. The polypropylene plate free of metal color coating is characterized by comprising a surface decoration layer and a substrate layer, wherein the surface decoration layer is prepared from the following raw materials in parts by weight: 90-98 parts of low-melting-index impact-resistant co-polypropylene resin, 0.02-2 parts of aluminum silver powder, 0.5-8 parts of pearl powder, 0.1-2 parts of UV absorbent, 0.1-0.8 part of antioxidant 1010 and 0.2-0.8 part of antioxidant 168, wherein the base material layer is prepared from the following raw materials in parts by weight: 95-99 parts of low-melting-index impact-resistant copolymerized polypropylene resin, 0.5-8 parts of titanium dioxide, 0.1-2 parts of light stabilizer, 0.1-0.8 part of antioxidant 1010 and 0.2-0.8 part of antioxidant 168.
2. The polypropylene board free of metallic color coating as claimed in claim 1, wherein the thickness of the surface decoration layer is 0.1-0.5mm, and the thickness of the substrate layer is 1-5 mm.
3. The preparation method of the polypropylene plate without metallic color coating of claim 1 or 2, which is characterized by comprising the following steps:
the method comprises the following steps: weighing the raw materials according to the formula of the surface decorative layer, adding the raw materials into a vertical mixer for mixing, then adding the mixture into a double-screw extruder for melt extrusion, and cooling and granulating the mixture to prepare the surface decorative layer;
step two: weighing the raw materials according to the formula of the substrate layer, adding the raw materials into a vertical mixer for mixing, then adding the mixture into a double-screw extruder for melt extrusion, and cooling and granulating the mixture to prepare the substrate layer;
step three: and (3) guiding the surface decorative layer and the substrate layer into a three-roll press for roll-in extrusion molding, and rolling to obtain the coating-free metallic polypropylene plate continuously produced in the length direction.
4. The method for preparing the polypropylene sheet material without being coated with metallic color according to claim 3, wherein in the first step, the temperature of each zone of the twin-screw extruder is as follows: the temperature of the T1 zone is 140-155 ℃, the temperature of the T2 zone is 165-175 ℃, the temperature of the T3 zone is 180-185 ℃, the temperature of the T4-T9 zone is 195-205 ℃, and the temperature of the T mold zone is 190-200 ℃.
5. The method for preparing the polypropylene sheet material without being coated with metallic color according to claim 3, wherein in the second step, the temperature of each zone of the twin-screw extruder is as follows: the temperature of the T1 zone is 140-155 ℃, the temperature of the T2 zone is 165-175 ℃, the temperature of the T3 zone is 180-185 ℃, the temperature of the T4-T9 zone is 190-200 ℃, and the temperature of the T mold zone is 190-200 ℃.
6. The method for preparing the polypropylene sheet material without being coated with metallic color according to claim 3, wherein the temperature of each zone of the main extruder in the third step is as follows: the temperature of the T1 zone is 140-155 ℃, the temperature of the T2 zone is 150-160 ℃, the temperature of the T3 zone is 155-170 ℃, the temperature of the T4-T9 zone is 165-185 ℃, and the temperature of the T mold zone is 180-190 ℃; the temperature of each zone of the auxiliary extruder is as follows: the temperature of the T1 zone is 160-165 ℃, the temperature of the T2 zone is 165-175 ℃, the temperature of the T3 zone is 180-185 ℃, the temperature of the T4 zone is 195-205 ℃, and the temperature of the T mold zone is 190-200 ℃.
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| CN109881865A (en) * | 2019-04-04 | 2019-06-14 | 江苏贝尔装饰材料有限公司 | A kind of environment-friendly polypropylene floor and its manufacturing method |
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Application publication date: 20200512 |