CN104479229A - Spray-free baking varnish metal-like polypropylene material and preparation method thereof - Google Patents
Spray-free baking varnish metal-like polypropylene material and preparation method thereof Download PDFInfo
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- CN104479229A CN104479229A CN201410788352.8A CN201410788352A CN104479229A CN 104479229 A CN104479229 A CN 104479229A CN 201410788352 A CN201410788352 A CN 201410788352A CN 104479229 A CN104479229 A CN 104479229A
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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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- 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
- B29C2948/92514—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- 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
-
- 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
Abstract
The invention belongs to the technical field of modification of high polymer materials, and provides a spray-free baking varnish metal-like polypropylene material and a preparation method thereof. The spray-free baking varnish metal-like polypropylene material is prepared from the following raw materials in percentage by weight: 62-66% of polypropylene, 23-27% of composite metal powder, 8% of polypropylene compatilizer, 0.4% of nucleator, 2% of lubricant and 0.6% of antioxidant. The polypropylene is used as the substrate, composite metal powder for endowing the material with spray-free baking varnish metal-like properties is used as the main component, and the polypropylene compatilizer, nucleator, lubricant and antioxidant are proportionally used as the auxiliary materials; the proportions of appropriate resin raw material, various other assistants and the composite metal powder are selected to obtain the spray-free baking varnish metal-like polypropylene material. The spray-free baking varnish metal-like polypropylene material maintains excellent properties of the propylene, and can have the beautiful metal-like effect under the condition of no spraying of baking varnish, thereby overcoming the defect that the metal-like effect can only be obtained by spraying the baking varnish in the traditional polypropylene.
Description
Technical field
The invention belongs to field of high polymer material modification, particularly relate to one exempt from spraying baking vanish imitate metallocene polypropylene material and preparation method.
Background technology
Polypropylene (PP) is one of general-purpose plastics, have that production cost is low, comprehensive mechanical property good, nontoxic, corrosion-resistant, be easy to the advantages such as recovery, be widely used in the fields such as chemical industry, chemical fibre, building, packaging, automobile.
Due to the high speed development of polypropylene modification technology in the last few years, the application of Composite Modification for Polypropylene material is more and more extensive, more Composite Modification for Polypropylene material is directly used in and does appearance component, " to mould Dai Gang " and " lightweight " object to be reached as appearance component, requirement product is often had not only to have excellent performance, also to there is the outward appearance of metal, and traditional technology needs spraying or baking vanish just can reach this effect often, and this traditional technique has following shortcoming: 1. spray and cross UV baking vanish length consuming time, affecting delivery date; 2. product fraction defective is at more than 20%-30%, and can not recycling; 3. spray and cross UV baking vanish costly, middle loss is large, raises cost; 4. to affect employee healthy for operation process, harm global environment.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide one exempt from spraying baking vanish imitate metallocene polypropylene material and preparation method, be intended to solve conventional polypropylene only have by spraying baking vanish can obtain imitative metal effect shortcoming.
The present invention is achieved in that on the one hand, provides a kind of when not carrying out spraying baking vanish, and metallocene polypropylene material imitated by the spraying baking vanish of exempting from beautiful imitative metal effect, comprises the component of following weight percent:
Particularly, described polypropylene is melting index 30 ± 10g/10min, Izod notched impact strength is greater than the Co-polypropylene particle of 8KJ/M2.
Particularly, described composite metal powder is calcium sulfate, pearlescence and argentine powder obtain according to weight ratio 7:1:2 is composite.
Particularly, described polypropylene compatilizer is maleic anhydride inoculated polypropylene compatilizer.
Particularly, described nucleator is aryl phosphate ester salt nucleator.
Particularly, described lubricant is at least one in polyethylene wax, calcium stearate or OP wax.
Particularly, described oxidation inhibitor is that four [β-(3,5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol esters and tricresyl phosphite (2,4-di-tert-butyl-phenyl) ester obtain by weight 1:2 is composite.
On the other hand, provide a kind of exempting from and spray the preparation method that metallocene polypropylene material imitated by baking vanish, comprise the following steps:
(1) recipe ingredient is taken
Imitate metallocene polypropylene material prescription take described polypropylene, polypropylene compatilizer, nucleator, lubricant and oxidation inhibitor respectively according to above-mentioned spraying baking vanish of exempting from;
(2) mixture is prepared
The mixing of the described polypropylene, polypropylene compatilizer, nucleator, lubricant and the oxidation inhibitor that take in step (1) added in slow-speed mixer and mix 3 ~ 5min, mixing fully, obtains mixture;
(3) melt extrude
The mixture obtained in step (2) is added in twin screw extruder by main feed system, again composite metal powder is added twin screw extruder by side feed system, through melt extruding, granulation, obtain exempting from spraying baking vanish and imitate metallocene polypropylene material, processing condition are: district's temperature is 200-210 DEG C, two district's temperature are 230-250 DEG C, three district's temperature are 230-250 DEG C, and four district's temperature are 220-240 DEG C, head temperature 230-250 DEG C, residence time 3-4min, pressure is 12-18MPa.
Beneficial effect of the present invention is: the present invention exempt from spraying baking vanish imitate metallocene polypropylene material with polypropylene be base material and give material exempt from spraying baking vanish imitate the composite metal powder of metallicity for main component, be aided with the polypropylene compatilizer of specified proportion, nucleator, lubricant, and oxidation inhibitor, specifically technique is added by the present invention, make the present invention exempt from spraying baking vanish to imitate metal propylene material and not only remain propylene excellent properties, and when not carrying out spraying baking vanish, just have beautiful imitative metal effect, solve conventional polypropylene and only have the shortcoming that can be obtained imitative metal effect by spraying baking vanish.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is that exempting from of providing of the embodiment of the present invention sprays baking vanish and imitate preparation method's schema of metallocene polypropylene material.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
The embodiment of the present invention provides one to exempt from spraying baking vanish and imitates metallocene polypropylene material, comprises the component of following weight percent:
Particularly, above-mentioned polypropylene component is as one of matrix component, its density is little, odorless is nontoxic, there is excellent erosion resistance, secondly, polypropylene has good thermotolerance, polypropylene material material products temperature to carry out disinfection sterilizing more than 100 DEG C, under the condition not being subject to external force, 150 DEG C also indeformable, but, it is general to there is mechanical property in polypropylene, low-temperature impact resistance is poor, and more aging deficiency, therefore, when polypropylene being used for the product to mechanical property requirements is higher, needs make improvements, as preferred embodiment, polypropylene is melting index 30 ± 10g/10min, Izod notched impact strength is greater than the Co-polypropylene particle of 8KJ/M2, polypropylene can purchase the PPB-MM30-S in China Petrochemical Industry, in a particular embodiment, this polyacrylic mass percentage can be 62%, 63%, 64%, 65%, concrete component such as 66% grade.
In order to give exempt from spraying baking vanish imitate metallocene polypropylene material have exempt from spraying baking vanish imitate metallicity, the embodiment of the present invention is imitated in metallocene polypropylene material and is added composite metal powder exempting from spraying baking vanish, this composite metal powder is calcium sulfate, pearlescence and argentine powder obtain according to weight ratio 7:1:2 is composite, as preferred embodiment, it is the GX03-4 of the Sichuan Guangyuan of more than 90 that above-mentioned composite metal powder can be purchased in whiteness value, it is the 153# of 100-600 object Merck KGaA that pearlescence can be purchased in particle diameter, argentine powder can purchase the PCR212 of the Germany's love card in 300-400 order heatproof more than 250 DEG C, in a particular embodiment, the mass percentage of this composite metal powder can be 23%, 24%, 25%, 26%, concrete component such as 27% grade.
Above-mentioned polypropylene compatilizer is maleic anhydride inoculated polypropylene compatilizer, and as preferred embodiment, above-mentioned polypropylene compatilizer can purchase the light GPM-200A in energy, in specific embodiment, and the mass percentage of this polypropylene compatilizer preferably 8%.
Above-mentioned nucleator is aryl phosphate ester salt nucleator, and as preferred embodiment, above-mentioned nucleator can purchase the nucleator generated in GCH Technology Co., Ltd., in specific embodiment, and the mass percentage of this nucleator preferably 8%.
In order to improve mobility and the release property of material in processing further, and improve above-mentioned each component in preparation process as melt extruded the dispersing uniformity in process, example of the present invention is imitated in metallocene polypropylene material and be with the addition of lubricant exempting from spraying baking vanish, this lubricant is at least one in polyethylene wax, calcium stearate or OP wax, as preferred embodiment, it is the lubricant that Indonesia produces that this lubricant can be purchased in the place of production, in a particular embodiment, and the mass percentage of this lubricant preferably 2%.
The antibacterial ability that metallocene polypropylene material imitated by baking vanish is sprayed in order to improve above-mentioned exempting from, strengthen its automatically cleaning ability, improve its security, the other industry field higher to antibacterial requirement can be applicable to, example of the present invention is imitated in metallocene polypropylene material and be with the addition of antiseptic-germicide exempting from spraying baking vanish, as preferred embodiment, above-mentioned oxidation inhibitor is four [β-(3, 5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2, 4-di-tert-butyl-phenyl) ester obtains by weight 1:2 is composite, above-mentioned oxidation inhibitor can be purchased in Taiwan double bond Chemical Group 1010 and 168, in a particular embodiment, the mass percentage of this antiseptic-germicide preferably 0.6%.
The present invention has following beneficial effect: the present invention exempt from spraying baking vanish imitate metallocene polypropylene material with polypropylene be base material and give material exempt from spraying baking vanish imitate the composite metal powder of metallicity for main component, be aided with the polypropylene compatilizer of specified proportion, nucleator, lubricant and oxidation inhibitor, specifically technique is added by the present invention, make the present invention exempt from spraying baking vanish to imitate metallocene polypropylene material and not only remain propylene excellent properties, and when not carrying out spraying baking vanish, just have beautiful imitative metal effect.
Correspondingly, embodiments provide a kind of exempting from and spray the preparation method that metallocene polypropylene material imitated by baking vanish, comprise the following steps:
(1) recipe ingredient is taken
Imitate metallocene polypropylene material prescription take described polypropylene, polypropylene compatilizer, nucleator, lubricant and oxidation inhibitor respectively according to above-mentioned spraying baking vanish of exempting from;
(2) mixture is prepared
The mixing of the described polypropylene, polypropylene compatilizer, nucleator, lubricant and the oxidation inhibitor that take in step (1) added in slow-speed mixer and mix 3 ~ 5min, mixing fully, obtains mixture;
(3) melt extrude
The mixture obtained in step (2) is added in twin screw extruder by main feed system, again composite metal powder is added twin screw extruder by side feed system, through melt extruding, granulation, obtain exempting from spraying baking vanish and imitate metallocene polypropylene material, processing condition are: district's temperature is 200-210 DEG C, two district's temperature are 230-250 DEG C, three district's temperature are 230-250 DEG C, and four district's temperature are 220-240 DEG C, head temperature 230-250 DEG C, residence time 3-4min, pressure is 12-18MPa.
Particularly, exempting to spray baking vanish in above-mentioned steps S01 and imitate the formula of metallocene polypropylene material and each component preferred content in filling a prescription and kind as described above, in order to save length, not repeating them here.
Above-mentionedly exempt to spray preparation method that baking vanish imitates metallocene polypropylene material and only each component mixing need be melt extruded at a proper temperature and can obtain product by formula, melt extruding the temperature and time that only need control in process to melt extrude, therefore, its preparation method technique is simple, condition is easily controlled, with low cost, feature low for equipment requirements, is suitable for suitability for industrialized production.
Comparative example 1
Present embodiment discloses a kind of exempting from and spray the preparation method that metallocene polypropylene material imitated by baking vanish, carry out in accordance with the following steps:
(1) take polypropylene 89%, polypropylene compatilizer 8%, nucleator 0.4%, lubricant 2% and oxidation inhibitor 0.6% by weight to add in slow-speed mixer and mix 4min, mixing fully;
(2) the above-mentioned five kinds of raw materials mixed are joined in twin screw extruder by main feed system, through melt extruding, granulation, processing condition are: district's temperature is 200 DEG C, two district's temperature are 230 DEG C, three district's temperature are 240 DEG C, and four district's temperature are 230 DEG C, head temperature 240 DEG C, residence time 4min, pressure is 15MPa.
Below in conjunction with specific embodiment, the present invention is explained in detail:
Embodiment 1
Metallocene polypropylene material imitated by the spraying baking vanish of exempting from of this embodiment, by weight, composed of the following components: polypropylene 62%, polypropylene compatilizer 8%, nucleator 0.4%, lubricant 2%, composite metal powder 27% and oxidation inhibitor 0.6%;
Its preparation method is as follows:
(1) each component is taken by above-mentioned parts by weight;
(2) polypropylene, polypropylene compatilizer, nucleator, lubricant and the oxidation inhibitor that take in step (1) are added in slow-speed mixer and mix 4min, mixing fully, obtains mixture;
(3) mixture obtained in step (2) is joined in twin screw extruder by main feed system, again composite metal powder is added twin screw extruder by side feed system, through melt extruding, granulation, obtain exempting from spraying baking vanish and imitate metallocene polypropylene material, processing condition are: district's temperature is 200 DEG C, two district's temperature are 230 DEG C, three district's temperature are 240 DEG C, and four district's temperature are 230 DEG C, head temperature 240 DEG C, residence time 4min, pressure is 15MPa.
Embodiment 2
Metallocene polypropylene material imitated by the spraying baking vanish of exempting from of this embodiment, by weight, composed of the following components: polypropylene 66%, polypropylene compatilizer 8%, nucleator 0.4%, lubricant 2%, composite metal powder 23% and oxidation inhibitor 0.6%;
Its preparation method is as follows:
(1) each component is taken by above-mentioned parts by weight;
(2) polypropylene, polypropylene compatilizer, nucleator, lubricant and the oxidation inhibitor that take in step (1) are added in slow-speed mixer and mix 4min, mixing fully, obtains mixture;
(3) mixture obtained in step (2) is joined in twin screw extruder by main feed system, again composite metal powder is added twin screw extruder by side feed system, through melt extruding, granulation, obtain exempting from spraying baking vanish and imitate metallocene polypropylene material, processing condition are: district's temperature is 200 DEG C, two district's temperature are 230 DEG C, three district's temperature are 240 DEG C, and four district's temperature are 230 DEG C, head temperature 240 DEG C, residence time 4min, pressure is 15MPa.
Embodiment 3
Metallocene polypropylene material imitated by the spraying baking vanish of exempting from of this embodiment, by weight, composed of the following components: polypropylene 64%, polypropylene compatilizer 8%, nucleator 0.4%, lubricant 2%, composite metal powder 25% and oxidation inhibitor 0.6%;
Its preparation method is as follows:
(1) each component is taken by above-mentioned parts by weight;
(2) polypropylene, polypropylene compatilizer, nucleator, lubricant and the oxidation inhibitor that take in step (1) are added in slow-speed mixer and mix 4min, mixing fully, obtains mixture;
(3) mixture obtained in step (2) is joined in twin screw extruder by main feed system, again composite metal powder is added twin screw extruder by side feed system, through melt extruding, granulation, obtain exempting from spraying baking vanish and imitate metallocene polypropylene material, processing condition are: district's temperature is 200 DEG C, two district's temperature are 230 DEG C, three district's temperature are 240 DEG C, and four district's temperature are 230 DEG C, head temperature 240 DEG C, residence time 4min, pressure is 15MPa.
Embodiment 1-3 and comparative example 1 are filled a prescription and material result confirms in table 1.
Table 1
As can be seen from the above table, comparative example 1 is not adding composite metal powder, and when compatilizer, lubricant, oxidation inhibitor are identical with nucleator addition, the material produced does not have metal effect.In embodiment 1-3, have adjusted the consumption of composite metal powder, and when compatilizer, lubricant, oxidation inhibitor are identical with nucleator addition, all can have good metal effect, object of the present invention can be reached.
The present invention is by selecting the interpolation proportioning of suitable resin raw material and other auxiliary agents various and composite metal powder, obtain exempt from spraying baking vanish imitate metallocene polypropylene, this is exempted to spray baking vanish and imitates needs that metal propylene solves conventional polypropylene and obtain the shortcoming that imitative metal effect needs to spray baking vanish, its product has excellent imitative metal effect, can meet the product of imitative metallocene polypropylene and the requirement in field.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (8)
1. exempt from spraying baking vanish and imitate a metallocene polypropylene material, comprise the component of following weight percent:
2. exempt from spraying baking vanish as claimed in claim 1 and imitate metallocene polypropylene material, it is characterized in that, the Co-polypropylene particle that described polypropylene is melting index 30 ± 10g/10min, Izod notched impact strength is greater than 8KJ/M2.
3. exempt from spraying baking vanish as claimed in claim 1 and imitate metallocene polypropylene material, it is characterized in that, described composite metal powder is calcium sulfate, pearlescence and argentine powder obtain according to weight ratio 7:1:2 is composite.
4. exempt from spraying baking vanish as claimed in claim 1 and imitate metallocene polypropylene material, it is characterized in that, described polypropylene compatilizer is maleic anhydride inoculated polypropylene compatilizer.
5. exempt from spraying baking vanish as claimed in claim 1 and imitate metallocene polypropylene material, it is characterized in that, described nucleator is aryl phosphate ester salt nucleator.
6. exempt from spraying baking vanish as claimed in claim 1 and imitate metallocene polypropylene material, it is characterized in that, described lubricant is at least one in polyethylene wax, calcium stearate or OP wax.
7. exempt from spraying baking vanish as claimed in claim 1 and imitate metallocene polypropylene material, it is characterized in that, described oxidation inhibitor is four [β-(3,5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2,4-di-tert-butyl-phenyl) ester obtain by weight 1:2 is composite.
8. metallocene polypropylene material preparation method imitated by the spraying baking vanish of exempting from as described in any one of claim 1-7, it is characterized in that, comprises the following steps:
(1) recipe ingredient is taken
Imitate metallocene polypropylene material prescription take described polypropylene, polypropylene compatilizer, nucleator, lubricant and oxidation inhibitor respectively according to spraying baking vanish of exempting from according to claim 1;
(2) mixture is prepared
The mixing of the described polypropylene, polypropylene compatilizer, nucleator, lubricant and the oxidation inhibitor that take in step (1) added in slow-speed mixer and mix 3 ~ 5min, mixing fully, obtains mixture;
(3) melt extrude
The mixture obtained in step (2) is added in twin screw extruder by main feed system, again composite metal powder is added twin screw extruder by side feed system, through melt extruding, granulation, obtain exempting from spraying baking vanish and imitate metallocene polypropylene material, processing condition are: district's temperature is 200-210 DEG C, two district's temperature are 230-250 DEG C, three district's temperature are 230-250 DEG C, and four district's temperature are 220-240 DEG C, head temperature 230-250 DEG C, residence time 3-4min, pressure is 12-18MPa.
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| CN106479034A (en) * | 2015-08-25 | 2017-03-08 | 中国石油化工股份有限公司 | A kind of impact resistance PP/PE alloy draw-bar box proprietary material with microstructure and preparation method thereof |
| CN107353491A (en) * | 2016-05-10 | 2017-11-17 | 合肥杰事杰新材料股份有限公司 | One kind is exempted to spray bumper oil resistant PP composite material and preparation method thereof |
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| CN110819008A (en) * | 2019-12-06 | 2020-02-21 | 广东圆融新材料有限公司 | Easy-to-clean spray-free polypropylene material and preparation method thereof |
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