CN118480250A - PET material composition for preparing electric fan blade, application of PET material composition, electric fan blade and preparation method of PET material composition - Google Patents
PET material composition for preparing electric fan blade, application of PET material composition, electric fan blade and preparation method of PET material composition Download PDFInfo
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- 239000000203 mixture Substances 0.000 title claims abstract description 54
- 239000000463 material Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 46
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 43
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 43
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 30
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 30
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 claims abstract description 19
- 239000011112 polyethylene naphthalate Substances 0.000 claims abstract description 19
- 239000012745 toughening agent Substances 0.000 claims abstract description 19
- 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 abstract description 18
- 239000003112 inhibitor Substances 0.000 claims abstract description 15
- 238000005809 transesterification reaction Methods 0.000 claims abstract description 15
- 229920002545 silicone oil Polymers 0.000 claims abstract description 14
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 11
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical group OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000001746 injection moulding Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 5
- 239000012321 sodium triacetoxyborohydride Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 6
- 238000005452 bending Methods 0.000 abstract description 5
- 239000002861 polymer material Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 229920000638 styrene acrylonitrile Polymers 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 3
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002285 poly(styrene-co-acrylonitrile) Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of high polymer materials, and discloses a PET material composition for preparing electric fan blades, application of the PET material composition, the electric fan blades and a preparation method of the electric fan blades. The composition comprises the following components: polyethylene terephthalate, silicone oil, pentaerythritol stearate, a toughening agent and an antioxidant; optionally further comprising polyethylene naphthalate and a transesterification inhibitor; wherein, the intrinsic viscosity of the polyethylene terephthalate is 0.8-0.9dL/g, and the intrinsic viscosity of the polyethylene naphthalate is 0.75-1dL/g; purity of pentaerythritol stearate is not less than 98%; the antioxidant is phosphite antioxidant with decomposition temperature higher than 310 ℃. The scheme provided by the invention can ensure that the manufactured fan blade of the electric fan has excellent mechanical properties such as tensile strength, bending modulus, bending strength and the like, and has the advantages of good transparency, strong shock resistance, no cracking and high wind speed.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a PET material composition for preparing electric fan blades, application of the PET material composition, the electric fan blades and a preparation method of the electric fan blades.
Background
The fan blade is one of key components of the electric fan, and is required to run stably in the running process, and has no edge rubbing, collision, deformation, obvious vibration and noise. Therefore, the blade material needs to have good strength and rigidity, and the blade cannot break during operation. In addition, the fan blade material also needs to have good molding processability to meet the assembly precision requirement.
For the demands of clients and beauty, many fan blade materials for the current electric fan are transparent plastic materials, mainly comprising transparent polypropylene (hereinafter referred to as "PP"), transparent acrylonitrile-butadiene-styrene copolymer (hereinafter referred to as "ABS") and styrene-acrylonitrile copolymer (hereinafter referred to as "SAN"). In the actual use process, the transparent PP material fan blade has the problems of soft deflection, deformation and small wind speed; the SAN fan blade has the advantages of good strength and rigidity, poor impact resistance, easiness in cracking, good impact resistance and moderate strength and rigidity, but high material price, and is mainly used for some high-end products at present.
Polyethylene terephthalate (hereinafter referred to as "PET") is a crystalline transparent material, has good comprehensive mechanical properties, strong fatigue resistance, abrasion resistance, weather resistance and chemical resistance, and is widely used in film sheets, bottles, medical sanitation, electronic appliances and automobile parts. The PET material has the advantages of convenient market recovery, high domestic self-control rate of raw materials, sufficient supply, low cost of PET raw materials and lower comprehensive cost than transparent ABS and SAN. Therefore, the PET transparent fan blade has better economic value.
However, the PET material has high molding temperature and wide crystallization temperature range, and has obvious crystallization behavior between 120 ℃ and 200 ℃, so that the PET transparent product usually has blushing and opaqueness caused by high crystallinity in the injection molding process, and is not easy to demould.
Disclosure of Invention
The invention aims to solve the problems of poor shock resistance, easiness in cracking and deformation and low wind speed of fan blades of an electric fan in the prior art.
In order to achieve the above object, a first aspect of the present invention provides a PET material composition for preparing fan blades of an electric fan, which comprises the following components stored independently or in a mixture of two or more of the following components:
Polyethylene terephthalate, silicone oil, pentaerythritol stearate, a toughening agent and an antioxidant; optionally further comprising polyethylene naphthalate and a transesterification inhibitor;
Based on the total mass of the composition, the content of polyethylene terephthalate is 83.2-98.8wt%, the content of silicone oil is 0.2-0.5wt%, the content of pentaerythritol stearate is 0.3-0.6wt%, the content of toughening agent is 0.5-3wt%, the content of antioxidant is 0.2-0.4wt%, the content of polyethylene naphthalate is 0-12wt%, and the content of transesterification inhibitor is 0-0.3wt%;
The intrinsic viscosity of the polyethylene terephthalate is 0.8-0.9dL/g, and the intrinsic viscosity of the polyethylene naphthalate is 0.75-1dL/g;
The purity of the pentaerythritol stearate is not less than 98%;
The antioxidant is phosphite antioxidant with decomposition temperature higher than 310 ℃.
In a second aspect, the invention provides an application of the composition in the first aspect in preparing electric fan blades.
In a third aspect of the present invention, there is provided an electric fan blade formed from the composition of the first aspect.
A fourth aspect of the present invention provides a method for preparing the fan blade of the third aspect, the method comprising:
(1) Contacting and mixing the components in the composition A to obtain a first mixed material; the composition A is the composition of the first aspect;
(2) Injection molding the first mixed material; wherein the temperature of the die for injection molding treatment is 10-25 ℃.
Compared with the existing electric fan blade material technology, the PET material composition for preparing the electric fan blade and the electric fan blade provided by the invention have at least the following advantages:
According to the scheme provided by the invention, the polyethylene terephthalate with the intrinsic viscosity of 0.8-0.9dL/g, the high-purity pentaerythritol stearate and the antioxidant with high decomposition temperature are compounded, so that the prepared fan blade of the electric fan has excellent mechanical properties such as tensile strength, flexural modulus, flexural strength and the like, and is strong in shock resistance, free from cracking and high in wind speed.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.
In the present invention, unless otherwise stated, the room temperature or the normal temperature represents 25.+ -. 2 ℃.
As described above, the first aspect of the present invention provides a PET material composition for preparing fan blades of an electric fan, which comprises the following components stored independently or in a mixture of two or more of them:
Polyethylene terephthalate, silicone oil, pentaerythritol stearate, a toughening agent and an antioxidant; optionally further comprising polyethylene naphthalate and a transesterification inhibitor;
Based on the total mass of the composition, the content of polyethylene terephthalate is 83.2-98.8wt%, the content of silicone oil is 0.2-0.5wt%, the content of pentaerythritol stearate is 0.3-0.6wt%, the content of toughening agent is 0.5-3wt%, the content of antioxidant is 0.2-0.4wt%, the content of polyethylene naphthalate is 0-12wt%, and the content of transesterification inhibitor is 0-0.3wt%;
The intrinsic viscosity of the polyethylene terephthalate is 0.8-0.9dL/g, and the intrinsic viscosity of the polyethylene naphthalate is 0.75-1dL/g;
The purity of the pentaerythritol stearate is not less than 98%;
The antioxidant is phosphite antioxidant with decomposition temperature higher than 310 ℃.
Preferably, the content of polyethylene terephthalate is 88.4 to 94.2wt%, the content of silicone oil is 0.2 to 0.4wt%, the content of pentaerythritol stearate is 0.3 to 0.5wt%, the content of toughening agent is 1 to 2wt%, the content of antioxidant is 0.2 to 0.4wt%, the content of polyethylene naphthalate is 4 to 8wt%, and the content of transesterification inhibitor is 0.1 to 0.3wt%, based on the total mass of the composition. The inventors found that with this preferred embodiment, a PET composite material having more excellent mechanical properties can be obtained.
Preferably, the polyethylene naphthalate has an intrinsic viscosity of 0.75 to 0.9dL/g. The inventor finds that the electric fan blade with more excellent comprehensive performance can be prepared by adopting the specific embodiment under the preferred condition.
Preferably, the antioxidant is phosphite antioxidant with decomposition temperature of 310-360 ℃. The inventor finds that the specific implementation mode under the preferred condition can avoid the whitening of the fan blade and improve the transparency of the fan blade while ensuring the mechanical property and the shock resistance of the fan blade of the electric fan in the research process.
According to a particularly preferred embodiment of the present invention, the antioxidant is selected from at least one of Hostanox P-EPQ from Craien, REVONOX 608,608 from Dover, USA, ADK STAB-PEP-36 from Japan Ai Dike.
Preferably, the silicone oil has a kinematic viscosity of 300-500cst at 25 ℃.
Preferably, the toughening agent is selected from at least one of toughening agent PTW of DuPont of the United states and toughening agent A-868 of Shenzhen Dazhen full-tech company.
Preferably, the transesterification inhibitor is at least one selected from ADK STAB AX-71 of Ai Dike, SA-PGP-B of Guangdong chemical Co., ltd.
As mentioned above, the second aspect of the present invention provides the use of the composition of the first aspect for the preparation of fan blades for electric fans.
In the application of the composition in preparing the fan blade of the electric fan, the specific application method is a technology well known to those skilled in the art, and the invention is not described herein.
As described above, according to a third aspect of the present invention, there is provided an electric fan blade made of the composition according to the first aspect.
It should be noted that, the corresponding substances related to the fan blade of the third aspect of the present invention are the corresponding substances in the composition according to the first aspect of the present invention, and those skilled in the art will not be able to reiterate the types and the contents of the corresponding substances in the present aspect, which should not be construed as limiting the present invention.
As described above, a fourth aspect of the present invention provides a method for preparing the fan blade of the third aspect, the method comprising:
(1) Contacting and mixing the components in the composition A to obtain a first mixed material; the composition A is the composition of the first aspect;
(2) Injection molding the first mixed material; wherein the temperature of the die for injection molding treatment is 10-25 ℃.
The inventor finds that the composition A provided by the invention can avoid the phenomenon that a fan blade product is whitened and opaque due to high crystallinity of PET when being subjected to injection molding at a low mold temperature in the research process, so that the fan blade of the electric fan with excellent shock resistance and good transparency is obtained.
The order and method of adding the components in the composition a are not particularly limited as long as the requirements of the present invention can be satisfied. Preferably, in step (1), the step of mixing the components of composition a comprises: and mixing the polyethylene terephthalate, the polyethylene naphthalate and the silicone oil to obtain a mixture I, and mixing the mixture I with the pentaerythritol stearate, the toughening agent, the antioxidant and the transesterification inhibitor to obtain a first mixed material II.
Preferably, in step (1), the conditions of the mixing I include at least: the stirring speed is 40-60rpm, the temperature is 10-30 ℃, and the time is 1-2min.
Preferably, in step (1), the conditions of the mixture II include at least: the stirring speed is 10-30rpm, the temperature is 10-30 ℃, and the time is 3-6min.
Preferably, in step (1), the method further comprises: prior to the time of the contact mixing, the said poly-pair is first ethylene glycol phthalate phthalic acid ethylene glycol ester.
Preferably, the drying process is performed in a dehumidifying dryer, and the conditions of the drying process include at least: the thickness of the material layer is not more than 5cm, the temperature is 150-160 ℃, and the time is 6-7h.
According to a particularly preferred embodiment of the present invention, in step (2), the injection molding is performed in an injection molding machine, and the conditions of the injection molding further include: the temperature of the hopper of the injection molding machine is 110-130 ℃, the temperature of the nozzle is 280-300 ℃, the temperature of the front section is 270-285 ℃, the temperature of the middle section is 270-280 ℃, the temperature of the rear section is 250-270 ℃, and the injection molding pressure is 80-140MPa.
The invention will be described in detail below by way of examples. In the following examples, unless otherwise specified, the materials and equipment involved are commercially available.
Polyethylene terephthalate: the brand is CR8863, the intrinsic viscosity is 0.820+/-0.020 dL/g, and the product is purchased from Huarun company;
Polyethylene terephthalate: the brand is V010, the intrinsic viscosity is 0.684+/-0.010 dL/g, and the product is purchased from Zhejiang three-dimensional materials science and technology Co., ltd;
polycarbonate: the brand PC IR2200, available from Japanese light emitting company;
silicone oil: the brand is BX-120A, the kinematic viscosity at 25 ℃ is 300cst, and the product is purchased from Dongguan Baoxing lubricating oil Co., ltd;
Pentaerythritol stearate: purity 99%, purchased from american dragon sand company;
Toughening agent: the trade mark is A-868, purchased from Shenzhen gold full-tech company;
Toughening agent: PTW, available from DuPont, U.S.A.;
an antioxidant: the brand ADK STAB-PEP-36, the decomposition temperature 314 ℃, available from Japanese Ai Dike;
An antioxidant: the brand number REVONOX 608,608, decomposition temperature 330 ℃, available from Dover, usa;
An antioxidant: the brand is SONOX and 168, the decomposition temperature is 267 ℃, and the product is purchased from Sanfeng chemical industry Co., ltd in Yi-city of Shandong province;
Polyethylene naphthalate: the brand is TN8050SC, the intrinsic viscosity is 0.800+/-0.020 dL/g, and the product is purchased from Japanese imperial company;
transesterification inhibitors: the trademark ADK STAB AX-71, available from Japanese Ai Dike;
Transesterification inhibitors: the brand is SA-PGP-B, which is purchased from Guangdong bolt-containing chemical industry Co., ltd;
Unless otherwise specified, the following examples refer to the formulation in which the amounts of the components are expressed in mass percent, and the method of calculation is as follows: the mass percentage of polyethylene terephthalate= (mass of polyethylene terephthalate)/(sum of the mass of each component in example 1) ×100%.
In the examples below, 1000g are represented per 1% by weight.
Example 1
The electric fan blades were prepared according to the following preparation method and the amounts shown in table 1. The preparation method comprises the following steps:
(1) Firstly, putting polyethylene terephthalate and polyethylene naphthalate into a dehumidifying dryer with the temperature of 160 ℃ for drying treatment for 6 hours in a mode that the thickness of a material layer is 4cm for standby;
(2) Mixing the polyethylene terephthalate, the polyethylene naphthalate and the silicone oil which are dried in the step (1) at room temperature for 1.5min at a stirring speed of 42rpm to obtain a mixture I, and mixing the mixture I with the pentaerythritol stearate, the toughening agent, the antioxidant and the transesterification inhibitor at a stirring speed of 20rpm for 6min to obtain a first mixed material;
(2) Adding the first mixed material into a hopper of an injection molding machine for injection molding;
Wherein, in the injection molding process, the temperature of a hopper of an injection molding machine is 110 ℃; the temperature of the nozzle is 295 ℃, the temperature of the front section is 280 ℃, the temperature of the middle section is 275 ℃, the temperature of the rear section is 260 ℃, the injection pressure is 90MPa, and the temperature of the die is 15 ℃.
The composition of the fan blades and specific operation information of example 1 are shown in table 1. The remaining examples and comparative examples were carried out using procedures similar to those of example 1, with the details set forth in Table 1.
TABLE 1
Comparative example 3
An electric fan blade was produced in a similar manner to example 2, except that polyethylene terephthalate was replaced with an equal mass of polycarbonate.
The electric fan blade DS3 is obtained.
Test example 1
The pre-injection molded materials obtained in examples and comparative examples were made into standard test bars according to the ISO standard, and the test bars were subjected to performance test, wherein transparent PP/HT9025NX and SAN/PN-138H were injection molded into ISO standard test bars at 190-220℃and 200-240℃respectively, as control group 1 and control group 2, and the specific test results are shown in Table 2.
Wherein the tensile strength is tested according to the method specified in ISO 527;
flexural strength and flexural modulus were tested according to the methods specified in ISO 178;
The charpy impact strength (no defects) was tested according to the method specified in ISO 179.
Light transmittance test the test was performed according to the method specified in ASTM D1003, with a test piece thickness of 2mm.
TABLE 2
The results of the table show that the electric fan blade material obtained by adopting the scheme provided by the invention has excellent mechanical properties such as tensile strength, bending modulus, bending strength and the like, has higher light transmittance, and also has the characteristics of strong impact resistance and no cracking, wherein the tensile strength, the bending modulus and the light transmittance are far higher than those of the transparent PP material, the problem that the transparent PP blade is deformed due to softness can be solved, and the impact resistance is superior to that of the SAN material.
Test example 2
The electric fan blades of the examples, the comparative examples and the comparative groups are injection molded into 5-blade fan blades and assembled into a whole machine, the test is compared with a standard fan of American FSA40XDR model as a test model, and the vibration performance, wind speed, noise and other performances of the fan blades in the running process are respectively tested, and the specific test results are shown in Table 3.
The testing method of the vibration performance of the fan blade comprises the following steps: according to the production procedure, the fan blades of the embodiment, the comparison example and the comparison group are assembled into a whole machine by the same steps, the speed is regulated to the highest gear according to the GB/T13380-2018 standard requirement, and the shaking and vibration conditions of the fan during operation are observed;
the testing method of the wind speed and the noise of the electric fan is carried out according to the specification of GB/T13380-2018.
TABLE 3 Table 3
| Running condition of fan blade after installation | High gear noise/dB | High gear wind speed/m/min | |
| Example 1 | Stable running, no obvious shaking and vibration phenomenon | 63.55 | 108.26 |
| Example 2 | Stable running, no obvious shaking and vibration phenomenon | 62.13 | 109.73 |
| Example 3 | Stable running, no obvious shaking and vibration phenomenon | 62.24 | 109.51 |
| Example 4 | Stable running, no obvious shaking and vibration phenomenon | 63.17 | 108.80 |
| Comparative example 1 | Stable running, no obvious shaking and vibration phenomenon | 63.30 | 107.18 |
| Comparative example 2 | Stable running, no obvious shaking and vibration phenomenon | 63.78 | 107.31 |
| Comparative example 3 | The operation has the shaking and vibrating phenomena | 67.22 | 107.02 |
| Control group 1 | Stable running, no obvious shaking and vibration phenomenon | 64.04 | 106.87 |
| Control group 2 | Stable running, no obvious shaking and vibration phenomenon | 63.10 | 110.11 |
As can be seen from the results of the table, the fan blade prepared by the embodiment provided by the invention runs stably after being installed, the whole machine has no obvious shake and vibration, the noise is lower than 67dB, the requirements of the standard fan specified by GB/T13380-2018 are met, and particularly, when the fan blade runs in a high gear, the fan blade prepared by the material provided by the invention has higher wind speed than a transparent PP fan blade and lower noise.
In summary, the scheme provided by the invention adopts the polyethylene terephthalate with the intrinsic viscosity of 0.8-0.9dL/g, the high-purity pentaerythritol stearate and the antioxidant with high decomposition temperature to compound, so that the prepared fan blade of the electric fan has excellent mechanical properties such as tensile strength, flexural modulus, flexural strength and the like, and has the advantages of high light transmittance, strong shock resistance, no cracking and high wind speed.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of the individual technical features in any other suitable way, which simple variants and combinations should likewise be regarded as being disclosed by the invention, all falling within the scope of protection of the invention.
Claims (11)
1. The PET material composition for preparing the fan blade of the electric fan is characterized by comprising the following components which are stored independently or are stored in a mixed mode of more than two of the following components:
Polyethylene terephthalate, silicone oil, pentaerythritol stearate, a toughening agent and an antioxidant; optionally further comprising polyethylene naphthalate and a transesterification inhibitor;
Based on the total mass of the composition, the content of polyethylene terephthalate is 83.2-98.8wt%, the content of silicone oil is 0.2-0.5wt%, the content of pentaerythritol stearate is 0.3-0.6wt%, the content of toughening agent is 0.5-3wt%, the content of antioxidant is 0.2-0.4wt%, the content of polyethylene naphthalate is 0-12wt%, and the content of transesterification inhibitor is 0-0.3wt%;
The intrinsic viscosity of the polyethylene terephthalate is 0.8-0.9dL/g, and the intrinsic viscosity of the polyethylene naphthalate is 0.75-1dL/g;
The purity of the pentaerythritol stearate is not less than 98%;
The antioxidant is phosphite antioxidant with decomposition temperature higher than 310 ℃.
2. The composition according to claim 1, wherein the polyethylene terephthalate is contained in an amount of 88.4 to 94.2wt%, the silicone oil is contained in an amount of 0.2 to 0.4wt%, the pentaerythritol stearate is contained in an amount of 0.3 to 0.5wt%, the toughening agent is contained in an amount of 1 to 2wt%, the antioxidant is contained in an amount of 0.2 to 0.4wt%, the polyethylene naphthalate is contained in an amount of 4 to 8wt%, and the transesterification inhibitor is contained in an amount of 0.1 to 0.3wt%, based on the total mass of the composition.
3. The composition of claim 2, wherein the polyethylene naphthalate has an intrinsic viscosity of 0.75-0.9dL/g.
4. A composition according to any one of claims 1 to 3, wherein the antioxidant is a phosphite antioxidant having a decomposition temperature of 310 to 360 ℃;
Preferably, the antioxidant is at least one selected from Hostanox P-EPQ from Crain, REVONOX 608,608 from Dover, USA, ADK STAB-PEP-36 from Japan Ai Dike.
5. The composition of any of claims 1-4, wherein the silicone oil has a kinematic viscosity of 300-500cst at 25 ℃.
6. The composition of any of claims 1-5, wherein the toughening agent is selected from at least one of toughener PTW of dupont, toughener a-868 of shenzhen large full tech;
preferably, the transesterification inhibitor is at least one selected from ADK STAB AX-71 of Ai Dike, SA-PGP-B of Guangdong chemical Co., ltd.
7. Use of a composition according to any one of claims 1 to 6 for the preparation of fan blades for electric fans.
8. An electric fan blade, characterized in that the material forming the electric fan blade is a composition according to any one of claims 1-6.
9. A method of making an electric fan blade as claimed in claim 8, comprising:
(1) Contacting and mixing the components in the composition A to obtain a first mixed material; the composition A is the composition according to any one of the claims 1-6;
(2) Injection molding the first mixed material; wherein the temperature of the die for injection molding treatment is 10-25 ℃.
10. The method of claim 9, wherein in step (1), the method further comprises: prior to the time of the contact mixing, the said poly-pair is first ethylene glycol phthalate phthalic acid ethylene glycol ester;
Preferably, the drying process is performed in a dehumidifying dryer, and the conditions of the drying process include at least: the thickness of the material layer is not more than 5cm, the temperature is 150-160 ℃, and the time is 6-7h.
11. The method according to claim 9 or 10, wherein in step (2), the injection molding is performed in an injection molding machine, and the conditions of the injection molding further include: the temperature of the hopper of the injection molding machine is 110-130 ℃, the temperature of the nozzle is 280-300 ℃, the temperature of the front section is 270-285 ℃, the temperature of the middle section is 270-280 ℃, the temperature of the rear section is 250-270 ℃, and the injection molding pressure is 80-140MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310098339.9A CN118480250A (en) | 2023-02-10 | 2023-02-10 | PET material composition for preparing electric fan blade, application of PET material composition, electric fan blade and preparation method of PET material composition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310098339.9A CN118480250A (en) | 2023-02-10 | 2023-02-10 | PET material composition for preparing electric fan blade, application of PET material composition, electric fan blade and preparation method of PET material composition |
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| CN118480250A true CN118480250A (en) | 2024-08-13 |
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| CN202310098339.9A Pending CN118480250A (en) | 2023-02-10 | 2023-02-10 | PET material composition for preparing electric fan blade, application of PET material composition, electric fan blade and preparation method of PET material composition |
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| Country | Link |
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| CN (1) | CN118480250A (en) |
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