CN117866328A - Heat-resistant polypropylene material and preparation method and application thereof - Google Patents
Heat-resistant polypropylene material and preparation method and application thereof Download PDFInfo
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- CN117866328A CN117866328A CN202311819043.8A CN202311819043A CN117866328A CN 117866328 A CN117866328 A CN 117866328A CN 202311819043 A CN202311819043 A CN 202311819043A CN 117866328 A CN117866328 A CN 117866328A
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 81
- -1 polypropylene Polymers 0.000 title claims abstract description 81
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 81
- 239000000463 material Substances 0.000 title claims abstract description 74
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000003365 glass fiber Substances 0.000 claims abstract description 25
- 239000010445 mica Substances 0.000 claims abstract description 18
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 18
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 9
- 239000003963 antioxidant agent Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 13
- 230000003078 antioxidant effect Effects 0.000 claims description 11
- 239000000314 lubricant Substances 0.000 claims description 8
- 239000012760 heat stabilizer Substances 0.000 claims description 6
- 239000002656 Distearyl thiodipropionate Substances 0.000 claims description 5
- PWWSSIYVTQUJQQ-UHFFFAOYSA-N distearyl thiodipropionate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCCCCCCC PWWSSIYVTQUJQQ-UHFFFAOYSA-N 0.000 claims description 5
- 235000019305 distearyl thiodipropionate Nutrition 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- ODJQKYXPKWQWNK-UHFFFAOYSA-L 3-(2-carboxylatoethylsulfanyl)propanoate Chemical compound [O-]C(=O)CCSCCC([O-])=O ODJQKYXPKWQWNK-UHFFFAOYSA-L 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- TXQVDVNAKHFQPP-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(CO)CO TXQVDVNAKHFQPP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 11
- 230000032683 aging Effects 0.000 description 8
- 238000009472 formulation Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 244000179970 Monarda didyma Species 0.000 description 1
- 235000010672 Monarda didyma Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 241000195974 Selaginella Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a heat-resistant polypropylene material, a preparation method and application thereof, wherein the heat-resistant polypropylene material comprises the following components in parts by weight: 60-70 parts of polypropylene, 20-30 parts of glass fiber, 5-10 parts of mica and 4-10 parts of auxiliary agent. The heat-resistant polypropylene material has excellent heat-resistant, oxygen-aging-resistant performance, low warping property, excellent mechanical strength and high and low temperature resistance, and can meet various performance requirements of household appliances on the material. In addition, the mica is introduced into the polypropylene material, so that the gloss and the flatness of the polypropylene material can be obviously improved, and the material has an excellent appearance.
Description
Technical Field
The invention belongs to the field of materials, and particularly relates to a heat-resistant polypropylene material, and a preparation method and application thereof.
Background
Polypropylene materials have high rigidity and low relative density, high tensile strength, good stress cracking resistance and chemical resistance, and therefore are widely used in the fields of automobiles, home appliances, medical treatment, etc., for example: the housing material of many household appliances is polypropylene material, but polypropylene material has the following disadvantages: (1) Poor thermal-oxidative aging resistance, and can obviously show the aging of the appearance after being used for a period of time, thereby affecting the appearance and strength; (2) Because the kitchen appliance is often in a high-temperature state when in use, the polypropylene material is easy to warp at a high temperature for a long time; (3) In order to improve the strength of the polypropylene material, glass fiber filling reinforcement is often used, some components contained in the glass fiber and some treating agent components used in surface treatment of the glass fiber generally accelerate the ageing of the polypropylene, and a compatibilizer, such as organic acid or anhydride grafted functionalized polypropylene, needs to be introduced in the preparation of the glass fiber reinforced polypropylene material, and the grafted functionalized polypropylene compatibilizer has adverse effects on the thermal oxidative ageing resistance of the polypropylene material, so that the thermal oxidative ageing resistance of the glass fiber reinforced polypropylene material does not reach the standard.
Disclosure of Invention
In order to overcome the problems of the prior art, one of the purposes of the present invention is to provide a heat-resistant polypropylene material.
The second purpose of the invention is to provide a preparation method of the heat-resistant polypropylene material.
The invention further aims to provide a kitchen appliance.
The invention aims at providing an application of the heat-resistant polypropylene material in the field of household appliances.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the first aspect of the invention provides a heat-resistant polypropylene material, which comprises the following components in parts by weight: 60-70 parts of polypropylene, 20-30 parts of glass fiber, 5-10 parts of mica and 4-10 parts of auxiliary agent.
Preferably, the auxiliary agent is at least one selected from a compatilizer, a heat stabilizer, an antioxidant and a lubricant.
Preferably, the auxiliary agent comprises the following components in parts by weight: 4 to 8 parts of compatilizer, 0.1 to 0.5 part of heat stabilizer, 0.3 to 0.5 part of antioxidant and 0.1 to 0.5 part of lubricant.
Preferably, the heat-resistant polypropylene material comprises the following components in parts by weight: 60-70 parts of polypropylene, 20-30 parts of glass fiber, 5-10 parts of mica, 4-8 parts of compatilizer, 0.1-0.5 part of heat stabilizer, 0.3-0.5 part of antioxidant and 0.1-0.5 part of lubricant.
Preferably, the heat-resistant polypropylene material comprises the following components in parts by weight: 60-70 parts of polypropylene, 20-30 parts of glass fiber, 5-10 parts of mica, 4-8 parts of compatilizer, 0.1-0.5 part of heat stabilizer, 0.3-0.5 part of antioxidant and 0.1-0.5 part of lubricant.
Preferably, the compatilizer is at least one selected from PC-1B and maleic anhydride grafted polypropylene.
Preferably, the heat stabilizer is at least one selected from distearyl thiodipropionate, dialkyl thiodipropionate and distearyl thiodipropionate.
Preferably, the antioxidant is at least one selected from hindered phenol antioxidants and phosphite antioxidants.
Preferably, the hindered phenolic antioxidant is selected from the group consisting of antioxidants 1010, namely pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
Preferably, the phosphite antioxidant is selected from the group consisting of antioxidants 168, namely tris (2, 4-di-t-butylphenyl) phosphite.
Preferably, the antioxidant is a mixture of antioxidant 1010 and antioxidant 168; further preferably, the antioxidant is a compound having a mass ratio of 1: (0.5-2) a mixture of antioxidant 1010 and antioxidant 168.
Preferably, the lubricant is at least one selected from N, N' - (ethane-1, 2-diyl) distearamide and pentaerythritol stearate.
Preferably, the polypropylene is a homo-polypropylene.
Preferably, the polypropylene has a melt index of 23 to 27g/10min measured at 230℃and 2.16 kg.
Preferably, the glass fiber is alkali-free short glass fiber, the diameter of the glass fiber is 11-14 mu m, and the length of the glass fiber is 0.5-1 mm.
Preferably, the mica is sericite; more preferably, the mica is sericite having a mesh number of 500 to 700 mesh.
The invention introduces mica into the heat-resistant polypropylene material, the mica is a rock-making mineral, presents hexagonal lamellar crystal form, is aluminosilicate of metals such as potassium, aluminum, magnesium, iron, lithium and the like, has a layered structure and a special surface structure, and is beneficial to solving the problem of surface warping of the polypropylene material caused by the influences of crystallization, orientation, shrinkage and the like. In addition, the mica powder in the invention has synergistic effect with other components, and can also improve the mechanical strength of the heat-resistant polypropylene material and enhance the performances of toughness, adhesive force, ageing resistance, corrosion resistance and the like.
The second aspect of the invention provides a method for preparing the heat-resistant polypropylene material provided by the first aspect of the invention, which comprises the following steps: and mixing polypropylene, mica and an auxiliary agent, adding the mixture into a main feeding port, adding glass fibers into a side feeding port, and extruding the mixture through a double-screw extruder to obtain the heat-resistant polypropylene material.
Preferably, the extrusion temperature is 180-230 ℃.
Preferably, the mixing rotating speed is 200-400 rpm.
Preferably, the mixing time is 6 to 10 minutes.
Preferably, the rotating speed of the main machine of the double-screw extruder is 350-550 rpm.
The third object of the invention is to provide a kitchen appliance comprising the heat-resistant polypropylene material provided in the first aspect of the invention.
It is a fourth object of the present invention to provide the use of the heat resistant polypropylene material provided in the first aspect of the present invention in the field of household appliances.
The beneficial effects of the invention are as follows: the heat-resistant polypropylene material has excellent heat-resistant, oxygen-aging-resistant performance, low warping property, excellent mechanical strength and high and low temperature resistance, and can meet various performance requirements of household appliances on the material. In addition, the mica is introduced into the polypropylene material, so that the gloss and the flatness of the polypropylene material can be obviously improved, and the material has excellent appearance, and specifically:
(1) The heat-resistant polypropylene material has excellent mechanical properties, and concretely comprises the following components: the tensile strength can reach 80-100 MPa, the bending strength can reach 110-130 MPa, the bending modulus can reach 6500-6800 MPa, the notch impact strength can reach 10-11 MPa, the low-temperature notch impact strength can reach 9-10 MPa, the Rockwell hardness can reach 102R, and no crack exists on the surface of a falling ball impact test.
(2) The heat-resistant polypropylene material has excellent high temperature resistance and heat aging resistance, and concretely comprises the following components: the thermal deformation temperature reaches 150-170 ℃, the appearance of the aged xenon lamp has no foaming, cracking or chalking phenomenon, and the color difference of the aged xenon lamp is 0.58-0.61.
(3) The heat-resistant polypropylene material has lower warping property.
Detailed Description
Specific implementations of the invention are described in further detail below with reference to examples, but the practice and protection of the invention is not limited thereto. It should be noted that the following processes, if not specifically described in detail, can be realized or understood by those skilled in the art with reference to the prior art. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
The raw material information used in the examples and comparative examples of the present invention are as follows:
polypropylene (PP), trade name: Z30S, purchased from the Ministry of China petrochemical Co., ltd;
mica, available from Xuzhou gold powder, inc.;
glass fiber, trade name: ECS305-4.5-K, available from International composite materials, inc. of Selaginella, inc.;
compatibilizers, maleic anhydride grafted polypropylene (PC-1B), purchased from south maritime morning polymer limited in the city of bergamot;
heat resistant stabilizers, namely distearyl thiodipropionate (DSDTP), tianjin Li Anlong New Material Co., ltd;
n, N' - (ethane-1, 2-diyl) distearamide (EBS), available from Indonesia Kogyo Chemie.
Example 1
The formulation of the heat-resistant polypropylene material in this example is shown in example 1 of table 1;
table 1 formulations of heat-resistant polypropylene materials in examples 1 to 2 and comparative examples 1 to 2
The preparation method of the heat-resistant polypropylene material in this example is as follows:
the raw materials were weighed according to the formulation of example 1 in table 1, and the raw materials except for glass fibers were put into a high-speed stirrer at a rotation speed of 300 rpm for 5 minutes for mixing. Adding the mixed raw materials into a main feeding port of a double-screw extruder, extruding through a glass fiber adding side feeding port, wherein 11 temperature areas of the double-screw extruder are respectively set to 170 ℃,215 ℃,225 ℃,230 ℃,220 ℃,220 ℃,220 ℃,220 ℃,225 ℃,220 ℃,220 ℃, the feeding speed of the side feeding port for adding the glass fiber is 15 revolutions per minute, the feeding speed of the main feeding port for adding the mixture is 50 revolutions per minute, the main machine rotating speed is 350 revolutions per minute, and then cooling, granulating and drying the materials extruded by the extruder to obtain the heat-resistant polypropylene material in the example.
Example 2
The formulation of the heat-resistant polypropylene material in this example is shown in example 2 of table 1;
the preparation method of the heat-resistant polypropylene material in this example is the same as that of example 1.
Comparative example 1
The formulation of the heat-resistant polypropylene material in this example is shown in comparative example 1 in table 1;
the preparation method of the heat-resistant polypropylene material in this example was carried out with reference to the preparation method of example 1.
Comparative example 2
The formulation of the heat-resistant polypropylene material in this example is shown in comparative example 2 in table 1;
the preparation method of the heat-resistant polypropylene material in this example was carried out with reference to the preparation method of example 1.
The heat-resistant polypropylene materials in examples 1 to 2 and comparative examples 1 to 2 of the present invention can be injection molded into practical application products, for example, into housings of household appliances, according to the use requirements.
Performance testing
The heat-resistant polypropylene materials of examples 1 to 2 and comparative examples 1 to 2 were injection-molded according to national standard related requirements to prepare test samples, and then were placed in a standard laboratory box (temperature 23 ℃ C., humidity 50%) for 24 hours to test the heat distortion temperature. And simultaneously preparing a finished product, namely a 5VA plate with the thickness of 2.5mm, placing a standard experiment box (the temperature is 23 ℃ and the humidity is 50%) for 24 hours, and then testing the height by using a height gauge. To verify the low temperature effect (-30 ℃) of the material, ball drop impact experiments were performed from a height difference of 50cm using 1kg of balls for a 2.5mm 5VA panel, and whether cracks were generated on the surface of the 5VA panel was observed. To verify the weatherability of the materials, a xenon lamp aging resistance 168h test was performed using a 5VA panel, the outer surface condition of the materials was evaluated, and each property measured according to the above test method is shown in table 2.
Table 2 results of respective performance tests of the heat-resistant polypropylene materials of examples 1 to 2 and comparative examples 1 to 2
As is clear from Table 2, the heights of the heat-resistant polypropylene materials of examples 1 to 2 after the mica was introduced into the polypropylene material were 0.22 to 0.25mm, which is significantly lower than that of comparative example 1, indicating that the polypropylene materials of examples 1 to 2 were more stable and less likely to warp, and further indicating that examples 1 to 2 were excellent in improving flatness and low warp. In examples 1 to 2, the amounts of polypropylene, glass fiber and mica were adjusted to form a synergistic effect between the three, so that the heat-resistant polypropylene material had low warpage, high tensile and flexural strength, and the like, as compared with comparative example 2.
In summary, the polypropylene material of the present invention has excellent low warpage properties while maintaining excellent high temperature resistance, and can maintain excellent low temperature resistance in low temperature environments, and is suitable for products applied in low temperature or high temperature environments, such as kitchen electrical parts, etc.
While the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, embodiments of the invention and features of the embodiments may be combined with each other without conflict.
Claims (10)
1. A heat resistant polypropylene material characterized by: comprises the following components in parts by weight: 60-70 parts of polypropylene, 20-30 parts of glass fiber, 5-10 parts of mica and 4-10 parts of auxiliary agent.
2. The heat resistant polypropylene material according to claim 1, wherein: the auxiliary agent is at least one selected from a compatilizer, a heat-resistant stabilizer, an antioxidant and a lubricant.
3. The heat resistant polypropylene material according to claim 1 or 2, characterized in that: the auxiliary agent comprises the following components in parts by weight: 4 to 8 parts of compatilizer, 0.1 to 0.5 part of heat stabilizer, 0.3 to 0.5 part of antioxidant and 0.1 to 0.5 part of lubricant.
4. A heat resistant polypropylene material according to claim 3, wherein: the compatilizer is at least one selected from PC-1B and maleic anhydride grafted polypropylene; and/or the heat-resistant stabilizer is at least one selected from distearyl thiodipropionate, dialkyl thiodipropionate and distearyl thiodipropionate; and/or the antioxidant is selected from at least one of hindered phenol antioxidants and phosphite antioxidants; and/or the lubricant is at least one selected from N, N' - (ethane-1, 2-diyl) distearamide and pentaerythritol stearate.
5. The heat resistant polypropylene material according to claim 1, wherein: the polypropylene is homo-polypropylene, and the melt index of the polypropylene measured at 230 ℃ and 2.16kg is 23-27 g/10min.
6. The heat resistant polypropylene material according to claim 1, wherein: the glass fiber is alkali-free short glass fiber, the diameter of the glass fiber is 11-14 mu m, and the length of the glass fiber is 0.5-1 mm.
7. The heat resistant polypropylene material according to claim 1, wherein: the mica is sericite.
8. The method for producing a heat-resistant polypropylene material as claimed in any one of claims 1 to 7, characterized in that: the method comprises the following steps:
and mixing polypropylene, mica and an auxiliary agent, adding the mixture into a main feeding port, adding glass fibers into a side feeding port, and extruding the mixture through a double-screw extruder to obtain the heat-resistant polypropylene material.
9. A kitchen appliance, characterized in that: comprising the heat-resistant polypropylene material as defined in any one of claims 1 to 7.
10. Use of the heat-resistant polypropylene material as defined in any one of claims 1 to 7 in the field of household appliances.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311819043.8A CN117866328A (en) | 2023-12-27 | 2023-12-27 | Heat-resistant polypropylene material and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311819043.8A CN117866328A (en) | 2023-12-27 | 2023-12-27 | Heat-resistant polypropylene material and preparation method and application thereof |
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| CN117866328A true CN117866328A (en) | 2024-04-12 |
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