CN112724514A - PP composite material suitable for extruded sheet plastic uptake and preparation method and application thereof - Google Patents
PP composite material suitable for extruded sheet plastic uptake and preparation method and application thereof Download PDFInfo
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- CN112724514A CN112724514A CN202011561190.6A CN202011561190A CN112724514A CN 112724514 A CN112724514 A CN 112724514A CN 202011561190 A CN202011561190 A CN 202011561190A CN 112724514 A CN112724514 A CN 112724514A
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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
- C08L23/12—Polypropene
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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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- 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
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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
- 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
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- 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)
Abstract
The invention discloses a PP composite material suitable for extruded sheet plastic uptake and a preparation method thereof, wherein the PP composite material comprises the following components in parts by weight: 20-70 parts of PP resin, 10-50 parts of reinforced resin, 2-20 parts of reinforcing agent, 0.05-0.3 part of initiator, 2-20 parts of compatilizer, 0.1-1 part of antioxidant and 0.2-2 parts of lubricant. The PP composite material provided by the invention has good oil resistance, corrosion resistance and aging resistance, high melt strength and wider melting range, can replace the current general purpose extruded plate grade HIPS to be applied to extruded plates and plastics of refrigerator liners and the like, solves the pain point problems of 'liner crack' and the like which troubles the refrigerator industry, and has great market application value.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a PP composite material suitable for extruded sheet plastic uptake and a preparation method and application thereof.
Background
At present, the inner container of the refrigerator is mostly extruded and formed by plastic suction by using amorphous HIPS (high impact polystyrene), but the HIPS has poor corrosion resistance to edible oil and foaming agent, is easy to age, causes the phenomenon of 'liner cracking' of the inner container of the refrigerator, and becomes a pain point which troubles the industry of the refrigerator. The highly-crystallized PP (polypropylene) material has excellent oil resistance and chemical corrosion resistance, but has low melt strength, a softening point and a melting point which are very close to each other, and a narrow melting range, and the melt strength can be rapidly reduced when the temperature is higher than the crystallization melting point for thermoforming, namely, a viscoelastic region of PP can not be kept stable in a wider temperature range during thermoforming, so that the extruded sheet blister forming can not be realized.
Therefore, the problem to be solved by the technical personnel in the field is to provide the PP composite material suitable for extruded sheet plastic uptake and the preparation method and application thereof.
Disclosure of Invention
In view of the above, the invention provides a PP composite material suitable for extruded sheet plastic uptake, which has good oil resistance, foaming agent corrosion resistance and aging resistance, high melt strength and wider melting range, can meet the technological requirements of extruded sheet plastic uptake, and has great market application value.
In order to achieve the purpose, the invention adopts the following technical scheme:
the PP composite material suitable for extruded sheet plastic uptake comprises the following components in parts by weight:
20-70 parts of PP resin;
10-50 parts of reinforced resin;
2-20 parts of a reinforcing agent;
0.05-0.3 part of initiator;
0.1-1 part of antioxidant;
2-20 parts of a compatilizer;
0.2-2 parts of a lubricant.
The invention has the beneficial effects that: (1) the PP composite material suitable for extruded sheet plastic uptake provided by the invention has good oil resistance, foaming agent corrosion resistance and aging resistance, can meet the technological requirements of extruded sheet plastic uptake of refrigerator liners and the like, and has great market application value.
(2) The invention firstly proposes that the reinforced resin is applied to the modification of the composite PP material, well solves the compatibility problem, effectively improves the melt strength of the composite PP material and widens the melting range, so that the composite PP material can well meet the requirements of the plate-extruding and plastic-absorbing process of refrigerator liners and the like.
Further, the PP composite material suitable for extruded sheet plastic uptake comprises the following components in parts by weight:
60 parts of PP resin;
28 parts of reinforcing resin;
5 parts of a reinforcing agent;
0.1 part of an initiator;
0.4 part of antioxidant;
5.5 parts of a compatilizer;
1 part of lubricant.
Adopt above-mentioned further beneficial effect: the plastic has good oil resistance, foaming agent corrosion resistance and aging resistance, and can meet the technical requirements of plastic uptake of extruded plates such as refrigerator liners and the like.
Further, the PP resin is a homo polypropylene and/or a co polypropylene.
Adopt above-mentioned further beneficial effect: has good oil resistance, foaming agent corrosion resistance and aging resistance.
Further, the reinforced resin is one or a mixture of polystyrene, high impact polystyrene and ABS plastic.
Adopt above-mentioned further beneficial effect: the melting range of the PP composite material can be widened and the melt strength can be improved.
Further, the reinforcing agent is talcum powder and/or crystal whisker.
Adopt above-mentioned further beneficial effect: the rigidity and tensile strength of the PP composite material can be further improved.
Further, the initiator is DTBP.
Adopt above-mentioned further beneficial effect: the initiator is introduced into the PP to generate macromolecular free radicals, then the recombination of C-C bonds is carried out, and the intermolecular grafting is carried out to form a branched structure in the crosslinking process, so that the melt strength of the composite PP is greatly improved.
Further, the antioxidant is one or more of antioxidant 168, antioxidant 1010 and antioxidant 1076.
Adopt above-mentioned further beneficial effect: can control and reduce the degradation and aging of the resin.
Further, the lubricant is one or a mixture of PE wax, stearate, lubricant EBS and silicone powder.
Adopt above-mentioned further beneficial effect: effective lubrication and improved dispersion properties can be provided.
Further, the compatilizer is one or a mixture of maleic anhydride, a compatilizer POE, a compatilizer SBS and a compatilizer SEBS.
Adopt above-mentioned further beneficial effect: the compatibility of the resin can be effectively improved.
The invention also provides a preparation method of the PP composite material suitable for extruded sheet plastic uptake, which comprises the following steps:
(1) weighing the components according to the PP composite material suitable for extruded sheet plastic uptake, and uniformly mixing PP resin, reinforced resin, a reinforcing agent, an initiator, an antioxidant, a compatilizer and a lubricant to obtain a mixture;
(2) and adding the mixture into a double-screw extruder, and performing melt extrusion granulation to obtain the PP composite material suitable for extruded sheet plastic uptake.
The invention has the beneficial effects that: the preparation method is simple, easy to operate and suitable for large-scale production and application.
Further, in the step (1), the mixing speed is 400-500rpm, and the mixing time is 5-30 minutes.
Adopt above-mentioned further beneficial effect: can mix all the components evenly and fully.
Further, in the step (2), the temperatures of the sections of the twin-screw extruder from the feeding port to the head are respectively 170-.
Adopt above-mentioned further beneficial effect: can ensure that all components are fully mixed and smoothly processed in the screw.
The invention also provides application of the PP composite material suitable for extruded sheet plastic uptake in preparation of refrigerator liner materials.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The preparation method of the PP composite material suitable for extruded sheet plastic uptake comprises the following steps:
(1) uniformly mixing 60kg of homo-polypropylene, 13kg of polystyrene, 0.1kg of DTBP (di-tert-butyl peroxide), 10kg of talcum powder, 10kg of crystal whisker, 1680.1kg of antioxidant, 10100.3kg of antioxidant and 5.5kg of SMA-maleic anhydride to obtain a mixture, wherein the mixing speed is 400rpm, and the mixing time is 5 minutes;
(2) and adding the mixture into a double-screw extruder through a main feeding port, wherein the temperature of each section of the double-screw extruder from the feeding port to the head is respectively 170-.
Example 2
The preparation method of the PP composite material suitable for extruded sheet plastic uptake comprises the following steps:
(1) uniformly mixing 50kg of polypropylene copolymer, 23kg of high impact polystyrene, 0.1kg of DTBP, 10kg of talcum powder, 10kg of crystal whisker, 1680.1kg of antioxidant, 10760.3kg of antioxidant, 5.5kg of compatilizer SBS and 1kg of calcium stearate to obtain a mixture, wherein the mixing speed is 450rpm, and the mixing time is 10 minutes;
(2) and adding the mixture into a double-screw extruder through a main feeding port, wherein the temperature of each section of the double-screw extruder from the feeding port to the head is respectively 170-.
Example 3
The preparation method of the PP composite material suitable for extruded sheet plastic uptake comprises the following steps:
(1) uniformly mixing 25kg of homo-polypropylene, 25kg of co-polypropylene, 10kg of polystyrene, 23kg of high impact polystyrene, 0.1kg of DTBP, 5kg of talcum powder, 5kg of whisker, 1680.2kg of antioxidant, 10100.1kg of antioxidant, 10760.1kg of antioxidant, 5.5kg of compatilizer SEBS, 0.5kg of PE wax and 0.5kg of silicone powder to obtain a mixture, wherein the mixing speed is 500rpm, and the mixing time is 15 minutes;
(2) and adding the mixture into a double-screw extruder through a main feeding port, wherein the temperature of each section of the double-screw extruder from the feeding port to the head is respectively 170-.
Example 4
The preparation method of the PP composite material suitable for extruded sheet plastic uptake comprises the following steps:
(1) uniformly mixing 30kg of homopolymerized polypropylene, 30kg of copolymerized polypropylene, 10kg of polystyrene, 18kg of high impact polystyrene, 0.1kg of DTBP, 2.5kg of talcum powder, 2.5kg of crystal whisker, 1680.2kg of antioxidant, 10100.2kg of antioxidant, 2.5kg of compatilizer SBS, 3kg of compatilizer SEBS, 0.5kg of calcium stearate and 0.5kg of silicone powder to obtain a mixture, wherein the mixing speed is 40rpm, and the mixing time is 20 minutes;
(2) and adding the mixture into a double-screw extruder through a main feeding port, wherein the temperature of each section of the double-screw extruder from the feeding port to the head is respectively 170-.
Example 5
The preparation method of the PP composite material suitable for extruded sheet plastic uptake comprises the following steps:
(1) uniformly mixing 30kg of homopolymerized polypropylene, 30kg of copolymerized polypropylene, 23kg of ABS plastic, 0.1kg of DTBP, 5kg of talcum powder, 5kg of crystal whisker, 1680.2kg of antioxidant, 10100.1kg of antioxidant, 10760.1kg of antioxidant, 2kg of compatilizer SBS, 3.5kg of compatilizer SEBS, 0.5kg of calcium stearate and 0.5kg of silicone powder to obtain a mixture, wherein the mixing speed is 500rpm, and the mixing time is 25 minutes;
(2) and adding the mixture into a double-screw extruder through a main feeding port, wherein the temperature of each section of the double-screw extruder from the feeding port to the head is respectively 170-.
Example 6
The preparation method of the PP composite material suitable for extruded sheet plastic uptake comprises the following steps:
(1) uniformly mixing 30kg of homopolymerized polypropylene, 30kg of copolymerized polypropylene, 28kg of ABS plastic, 0.1kg of DTBP, 2.5kg of talcum powder, 2.5kg of crystal whisker, 1680.2kg of antioxidant, 10760.2kg of antioxidant, SBS2kg of compatilizer, 3.5kg of compatilizer SEBS, 0.5kg of calcium stearate and 0.5kg of silicone powder to obtain a mixture, wherein the mixing speed is 450rpm, and the mixing time is 30 minutes;
(2) and adding the mixture into a double-screw extruder through a main feeding port, wherein the temperature of each section of the double-screw extruder from the feeding port to the head is respectively 170-.
Effect test
The comparative example is the HIPS2710 raw material of Yangziba generally used in the refrigerator inner container in the current market.
In order to further illustrate the oil resistance, the foaming agent corrosion resistance, the aging resistance and other properties of the PP composite material suitable for extruded sheet plastic uptake, the applicant also carries out a related property comparison test, and the specific experimental process is as follows:
the corrosion resistance test method comprises the following steps: the PP composite materials of examples 1 to 6 and comparative materials were respectively prepared into 200 × 150 × 2mm sample plates, uniformly coated with a foaming agent, placed in a 25 ℃ incubator for 168H, and then tensile sample bars were prepared according to the ASTM D638-2003 standard, and the retention rates of tensile strength and elongation at break were measured.
Oil resistance test method: tensile bars were prepared from the PP composites of examples 1-6 and the comparative examples according to the ASTM D638-2003 standard, the bars were bent and clamped in a jig having a width 2cm shorter than the bars, and the bars were covered with an oil-absorbing paper and coated with edible salad oil (sesame salad oil for this test) and the breaking of the bars after being coated with oil 8H and 24H was observed and recorded.
The method for testing the light aging resistance comprises the following steps: examples 1-6PP composites and comparative materials were injection molded into plaques measuring 200mm x 150mm x 2mm and irradiated with UVA-340 lamps according to GB/T14522 with an irradiance (w/m2 x nm) of 0.89 ± 0.02 black panel thermometer temperature of 60 ± 3 dry 8H irradiance (w/m2 x nm) of 0.00 black panel thermometer temperature of 50 ± 3 condensation 4H for 20 cycles.
The test results are shown in table 1:
table 1 table of physical property test results
In order to further illustrate the stability of the extruding and plastic-sucking processes of the PP composite material suitable for extruding and plastic-sucking the extruded plate and the plastic-sucking process of the PP composite material, and the longitudinal and transverse mechanical properties of the plate, the applicant also carries out a related performance comparison test, and the specific experimental process is as follows:
the manufacturability is as follows: the PP composite materials of examples 1 to 6 and the comparative example material were produced on a plate extrusion line and a blister line respectively, and the process stability and whether the processing and molding were good were observed.
The performance of the plate is as follows: after extruding the PP composite materials of examples 1 to 6 and the comparative example materials respectively, standard sample bars were produced in the longitudinal and transverse directions respectively by a sample maker, and the tensile strength, elongation and breaking strength were measured.
The test results are shown in table 2:
TABLE 2 extrusion moulding manufacturability and sheet Performance test contrast test results
As can be seen from the test data in Table 1, the oil resistance, the foaming agent corrosion resistance and the aging resistance of the PP composite material suitable for extruded sheet plastic uptake are obviously superior to those of the extruded sheet grade HIPS which is normally used at present; as can be seen from the tests of the extruded sheet plastic-suction manufacturability and the sheet physical property in the table 2, the physical properties of the invention are close to or better than (especially the elongation at break of) the extruded sheet grade HIPS which is normally used at present, and the requirements of the extruded sheet and the plastic-suction technology can be completely met. The successful application of the material in the refrigerator liner can thoroughly solve the problem of liner cracking which puzzles the refrigerator industry for a long time, thoroughly change the market pattern of the special material for the liner in the refrigerator industry, and have great economic and social benefits and wide application prospect.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The PP composite material suitable for extruded sheet plastic uptake is characterized by comprising the following components in parts by weight:
20-70 parts of PP resin;
10-50 parts of reinforced resin;
2-20 parts of a reinforcing agent;
0.05-0.3 part of initiator;
0.1-1 part of antioxidant;
2-20 parts of a compatilizer;
0.2-2 parts of a lubricant.
2. The PP composite material suitable for extruded sheet plastic uptake of claim 1, wherein the PP resin is homo polypropylene and/or co polypropylene.
3. The PP composite material suitable for extruded sheet plastic uptake of claim 1, wherein the reinforcing resin is one or more of polystyrene, high impact polystyrene, and ABS plastic.
4. The PP composite material suitable for extruded sheet plastic uptake of claim 1, wherein the reinforcing agent is talc powder and/or whiskers.
5. The PP composite material suitable for extruded sheet plastic uptake of claim 1, wherein the initiator is DTBP.
6. The PP composite material suitable for extruded sheet plastic uptake of claim 1, wherein the antioxidant is a mixture of one or more of antioxidant 168, antioxidant 1010 and antioxidant 1076.
7. The PP composite material suitable for extruded sheet plastic uptake of claim 1, wherein the lubricant is one or more of PE wax, stearate, EBS lubricant and silicone powder.
8. The PP composite material suitable for extruded sheet plastic uptake of claim 1, wherein the compatibilizer is one or more of maleic anhydride, POE, SBS and SEBS.
9. A preparation method of a PP composite material suitable for extruded sheet plastic uptake is characterized by comprising the following steps:
(1) weighing the components of the PP composite material suitable for extruded sheet plastic uptake according to any one of claims 1 to 8, and uniformly mixing PP resin, reinforced resin, a reinforcing agent, an initiator, an antioxidant, a compatilizer and a lubricant to obtain a mixture;
(2) and adding the mixture into a double-screw extruder, and performing melt extrusion granulation to obtain the PP composite material suitable for extruded sheet plastic uptake.
10. Use of the PP composite material suitable for extruded sheet plastics sucking of any one of claims 1 to 8 in the preparation of refrigerator liner material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011561190.6A CN112724514A (en) | 2020-12-25 | 2020-12-25 | PP composite material suitable for extruded sheet plastic uptake and preparation method and application thereof |
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| CN202011561190.6A CN112724514A (en) | 2020-12-25 | 2020-12-25 | PP composite material suitable for extruded sheet plastic uptake and preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116120669A (en) * | 2023-03-22 | 2023-05-16 | 得力集团有限公司 | Anti-drop high-stiffness file box material and preparation method thereof |
| CN117700883A (en) * | 2023-12-25 | 2024-03-15 | 合肥科拜尔新材料股份有限公司 | Low-shrinkage high-gloss temperature-resistant PP composite material and preparation method thereof |
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