阅读说明：本技术 一种耐暴晒老化的汽车充电桩壳体 (Anti-exposure and anti-aging automobile charging pile shell ) 是由 韦佑喜 韦荏文 黄汉 叶家乐 陈永艺 黄初抗 于 2020-10-22 设计创作，主要内容包括：本发明公开了一种耐暴晒老化的汽车充电桩壳体的制备方法,包括如下步骤：将聚丙烯、钛白粉、粉煤灰、润滑剂混合,预热至80-90℃,搅拌状态依次加入热稳定剂、增塑剂,继续搅拌,干燥得到预混料α；采用尼龙1214、聚四亚甲基醚二醇为原料,两者混合后真空干燥,搅拌状态下升温,加入催化剂反应,加入预混料α、纳米石墨烯、带疏水基团的硅氧烷继续搅拌,冷却,粉碎得到预混料γ；将预混料γ升温翻炼,薄通,静置以进行熟化,将熟化后物料返炼,加压处理,重复加压-泄压方式2-4次,160-170℃预热,再升温至195-210℃,6-8MPa成型10-12min,降温降压得到耐暴晒老化的汽车充电桩壳体。(The invention discloses a preparation method of an automobile charging pile shell resistant to exposure and aging, which comprises the following steps: mixing polypropylene, titanium dioxide, fly ash and a lubricant, preheating to 80-90 ℃, sequentially adding a heat stabilizer and a plasticizer in a stirring state, continuously stirring, and drying to obtain a premix alpha; adopting nylon 1214 and polytetramethylene ether glycol as raw materials, mixing the raw materials, drying in vacuum, heating under stirring, adding a catalyst for reaction, adding premix alpha, nano graphene and siloxane with hydrophobic groups, continuously stirring, cooling and crushing to obtain premix gamma; heating and turning the premix gamma, thinly passing the premix gamma, standing the premix gamma for curing, remilling the cured material, performing pressure treatment, repeating the pressure-relief mode for 2 to 4 times, preheating at the temperature of 160-.)

1. The preparation method of the exposure and aging resistant automobile charging pile shell is characterized by comprising the following steps:

s1, mixing polypropylene, titanium dioxide, fly ash and a lubricant, preheating to 80-90 ℃, sequentially adding a heat stabilizer and a plasticizer in a stirring state, continuously stirring, and drying to obtain a premix alpha;

s2, mixing nylon 1214 and polytetramethylene ether glycol serving as raw materials, drying in vacuum, heating to 140 ℃ under a stirring state, adding a catalyst, reacting for 2-6min, adding premix alpha, nano graphene and siloxane with hydrophobic groups, continuously stirring, cooling and crushing to obtain premix gamma;

s3, heating the premix gamma to the temperature of 120-.

2. The method for preparing the exposure and aging resistant automobile charging pile shell according to claim 1, wherein in S1, the mass ratio of polypropylene, titanium dioxide, fly ash, lubricant, heat stabilizer and plasticizer is 60-100: 10-20: 6-10: 1-3: 1-2: 1-2.

3. The method for preparing the exposure-aging-resistant automobile charging pile shell according to claim 1, wherein in S1, the drying temperature is 90-100 ℃.

4. The method for preparing the sunproof and aging-resistant automobile charging pile housing according to claim 1, wherein in S2, the melt index of the nylon 1214 is 0.5g/10 min.

5. The method for preparing the exposure-aging-resistant automobile charging pile shell according to claim 1, wherein in S2, the mass ratio of nylon 1214, polytetramethylene ether glycol, the catalyst, the premix alpha, the nano graphene and the siloxane with the hydrophobic group is 20-30: 4-12: 0.1-0.16: 80-120: 2-6: 0.1-0.6.

6. The method for preparing the sunproof and aging-resistant automobile charging pile housing according to claim 1, wherein in S2, the siloxane with the hydrophobic group is vinyltriethoxysilane.

7. The method for preparing the exposure-aging-resistant automobile charging pile shell according to claim 1, wherein in S2, the catalyst is at least one of antimony acetate, ethylene glycol antimony, germanium oxide and titanium silicon catalyst C-94.

8. The method for preparing the sun exposure and aging resistant automobile charging pile shell according to claim 1, wherein in the thin passing process of S3, the roller spacing is 0.4-0.6 mm.

9. An exposure-aging-resistant automobile charging pile shell, which is prepared by the method for preparing the exposure-aging-resistant automobile charging pile shell according to any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of automobile charging piles, in particular to an exposure and aging resistant automobile charging pile shell and a preparation method thereof.

Background

The new energy automobile fills electric pile can provide energy supply for the operation, is the important basic braced system of new energy automobile, also is the important link in new energy automobile commercialization, industrialization process. The input and the alternating current network lug connection of car stake of charging, the output of car stake of charging install with the car input socket matched charge the end structure be used for charging for electric automobile, can charge for various model cars according to the voltage class of difference.

The function of the automobile charging pile is similar to that of an oiling machine in a gas station, and the automobile charging pile can be fixed on the ground or on the wall and installed in public environments, residential quarters, charging stations and the like. However, the existing outdoor charging pile is exposed outside for a long time and is easy to suffer from sunlight erosion, and particularly, the existing outdoor charging pile is difficult to maintain stability and easy to age when exposed to the sun for a long time, so that a solution is needed urgently.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides an automobile charging pile shell resistant to exposure and aging and a preparation method thereof.

A preparation method of an exposure and aging resistant automobile charging pile shell comprises the following steps:

s1, mixing polypropylene, titanium dioxide, fly ash and a lubricant, preheating to 80-90 ℃, sequentially adding a heat stabilizer and a plasticizer in a stirring state, continuously stirring, and drying to obtain a premix alpha;

s2, mixing nylon 1214 and polytetramethylene ether glycol serving as raw materials, drying in vacuum, heating to 140 ℃ under a stirring state, adding a catalyst, reacting for 2-6min, adding premix alpha, nano graphene and siloxane with hydrophobic groups, continuously stirring, cooling and crushing to obtain premix gamma;

s3, heating the premix gamma to the temperature of 120-.

Preferably, in S1, the mass ratio of polypropylene, titanium dioxide, fly ash, lubricant, heat stabilizer and plasticizer is 60-100: 10-20: 6-10: 1-3: 1-2: 1-2.

Preferably, in S1, the drying temperature is 90-100 ℃.

Preferably, in S2, the nylon 1214 has a melt index of 0.5g/10 min.

Preferably, in S2, the mass ratio of the nylon 1214, the polytetramethylene ether glycol, the catalyst, the premix alpha, the nano graphene and the siloxane with the hydrophobic group is 20-30: 4-12: 0.1-0.16: 80-120: 2-6: 0.1-0.6.

Preferably, in S2, the siloxane with hydrophobic groups is vinyltriethoxysilane.

Preferably, in S2, the catalyst is at least one of antimony acetate, ethylene glycol antimony, germanium oxide and titanium silicalite catalyst C-94.

Preferably, the roll gap in the thin-passing process of S3 is 0.4-0.6 mm.

The exposure and aging resistant automobile charging pile shell is prepared by the preparation method of the exposure and aging resistant automobile charging pile shell.

The technical effects of the invention are as follows:

according to the invention, nylon 1214 and polytetramethylene ether glycol are used as raw materials and combined under the action of the catalyst, the obtained product has good elasticity and excellent aging resistance, and can effectively absorb external damage by matching with nano-graphene to avoid aging fatigue cracking;

under the action of siloxane with hydrophobic groups, adsorption points and chemical action points can be formed on the inner surface of filler particles and polymer chains under the action of the alpha of the premix, so that a chemical cross-linked network and a winding network are formed, and the nano graphene forms a multi-phase composite structure in the network, so that the stability of the charging pile shell can be effectively maintained even if the charging pile shell is exposed outdoors for a long time, the aging, fatigue and cracking are not easy to occur, and the sun exposure and aging resistance is further enhanced;

the impact resistance and the thermal aging resistance of the obtained automobile charging pile shell are obviously improved, and even if the automobile charging pile shell is exposed outside for a long time and is subjected to the conditions of exposure to wind, rain and erosion, the problems of short service life and easy aging of the new energy automobile charging pile shell can be effectively solved, and the service life and the safety of the new energy automobile charging pile are improved.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to specific examples.

Example 1

A preparation method of an exposure and aging resistant automobile charging pile shell comprises the following steps:

s1, adding 100kg of polypropylene, 10kg of titanium dioxide, 10kg of fly ash and 1kg of lubricant into a high-speed mixer, stirring for 2min at the speed of 800r/min, preheating to 90 ℃, sequentially adding 1kg of organic phosphite ester and 2kg of dimethyl phthalate in a stirring state, stirring for 2min, and drying in an oven at the temperature of 100 ℃ to obtain premix alpha;

s2, using 20kg of nylon 1214 with a melt index of 0.5g/10min and 12kg of polytetramethylene ether glycol as raw materials, mixing the raw materials and drying the raw materials in a vacuum drying oven, wherein the drying temperature is 80 ℃, the drying time is 4 hours, heating to 140 ℃ under a stirring state, adding 0.16kg of ethylene glycol antimony for reaction, the reaction time is 2 minutes, adding 120kg of premix alpha, 2kg of nano graphene and 0.6kg of vinyl triethoxysilane, continuing stirring for 2 minutes, cooling and crushing to obtain premix gamma;

s3, feeding the premix gamma into a double-roll open mill, turning for 2min at 130 ℃, thinly passing for 2 times at a roll gap of 0.6mm, standing for 4h for curing, remilling the cured material for 5min to eliminate bubbles, feeding the material into a pressurizing machine for pressurizing treatment, repeating the pressurizing-pressure releasing mode for 4 times, feeding the material into a forming die, preheating for 6min at 160 ℃, further heating to 195 ℃, forming for 10min at 8MPa, and cooling and reducing the pressure to obtain the insolation and aging resistant automobile charging pile shell.

Example 2

A preparation method of an exposure and aging resistant automobile charging pile shell comprises the following steps:

s1, adding 60kg of polypropylene, 20kg of titanium dioxide, 6kg of fly ash and 3kg of lubricant into a high-speed mixer, stirring for 6min at the speed of 600r/min, preheating to 80 ℃, sequentially adding 2kg of organic phosphite ester and 1kg of dimethyl phthalate in a stirring state, stirring for 6min, and drying in an oven at the temperature of 90 ℃ to obtain premix alpha;

s2, mixing 30kg of nylon 1214 with a melt index of 0.5g/10min and 4kg of polytetramethylene ether glycol serving as raw materials, drying the mixture in a vacuum drying oven at 90 ℃ for 2h, heating to 150 ℃ under a stirring state, adding 0.1kg of ethylene glycol antimony for reaction for 6min, adding 80kg of premix alpha, 6kg of nano-graphene and 0.1kg of vinyltriethoxysilane, continuously stirring for 4min, cooling and crushing to obtain premix gamma;

s3, feeding the premix gamma into a double-roll open mill, turning for 6min at 120 ℃, thinly passing for 5 times at a roll gap of 0.4mm, standing for 2h for curing, remilling the cured material for 10min to eliminate bubbles, feeding the material into a pressurizing machine for pressurizing treatment, repeating the pressurizing-pressure releasing mode for 2 times, feeding the material into a forming die, preheating for 4min at 170 ℃, heating to 210 ℃, forming for 12min at 6MPa, cooling and reducing the pressure to obtain the insolation and aging resistant automobile charging pile shell.

Example 3

A preparation method of an exposure and aging resistant automobile charging pile shell comprises the following steps:

s1, adding 85kg of polypropylene, 14kg of titanium dioxide, 8.5kg of fly ash and 1.8kg of lubricant into a high-speed mixer, stirring at the speed of 720r/min for 4min, preheating to 84 ℃, sequentially adding 1.4kg of organic phosphite ester and 1.6kg of dimethyl phthalate under the stirring state, stirring for 3min, and drying in an oven at the temperature of 96 ℃ to obtain premix alpha;

s2, using 23kg of nylon 1214 with a melt index of 0.5g/10min and 10kg of polytetramethylene ether glycol as raw materials, mixing the raw materials and drying the raw materials in a vacuum drying oven, wherein the drying temperature is 82-86 ℃, the drying time is 2 hours, heating to 143 ℃ under a stirring state, adding 0.13kg of germanium oxide for reaction, the reaction time is 4 minutes, adding 105kg of premix alpha, 4kg of nano graphene and 0.3kg of vinyl triethoxysilane, continuously stirring for 2 minutes, cooling and crushing to obtain premix gamma;

s3, feeding the premix gamma into a double-roll open mill, turning for 4min at 126 ℃, thinly passing for 4 times at a roll gap of 0.5mm, standing for 3h for curing, remilling the cured material for 7min to eliminate bubbles, feeding the material into a pressurizing machine for pressurizing treatment, repeating the pressurizing-pressure releasing mode for 3 times, feeding the material into a forming die, preheating for 5min at 165 ℃, heating to 202 ℃, forming for 11min at 7MPa, cooling and reducing the pressure to obtain the insolation and aging resistant automobile charging pile shell.

Example 4

A preparation method of an exposure and aging resistant automobile charging pile shell comprises the following steps:

s1, adding 80kg of polypropylene, 12kg of titanium dioxide, 8kg of fly ash and 1.5kg of lubricant into a high-speed mixer, stirring at the speed of 700r/min for 3min, preheating to 82 ℃, sequentially adding 1.2kg of organic phosphite ester and 1.5kg of dimethyl phthalate in a stirring state, stirring for 3min, and drying in an oven at the temperature of 95 ℃ to obtain a premix alpha;

s2, using 22kg of nylon 1214 with a melt index of 0.5g/10min and 10kg of polytetramethylene ether glycol as raw materials, mixing the raw materials and drying the raw materials in a vacuum drying oven, wherein the drying temperature is 82 ℃, the drying time is 2 hours, heating to 142 ℃ under a stirring state, adding 0.12kg of germanium oxide for reaction, the reaction time is 3 minutes, adding 100kg of premix alpha, 3kg of nano graphene and 0.2kg of vinyltriethoxysilane, continuing stirring for 2 minutes, cooling and crushing to obtain premix gamma;

s3, feeding the premix gamma into a double-roll open mill, turning for 3min at 125 ℃, thinly passing for 3 times at a roll gap of 0.4mm, standing for 2h for curing, remilling the cured material for 6min to eliminate bubbles, feeding the material into a pressurizing machine for pressurizing treatment, repeating the pressurizing-pressure releasing mode for 2 times, feeding the material into a forming die, preheating for 4min at 162 ℃, heating to 200 ℃, forming for 10min at 6MPa, cooling and reducing the pressure to obtain the insolation and aging resistant automobile charging pile shell.

Example 5

A preparation method of an exposure and aging resistant automobile charging pile shell comprises the following steps:

s1, adding 90kg of polypropylene, 16kg of titanium dioxide, 9kg of fly ash and 2kg of lubricant into a high-speed mixer, stirring for 5min at the speed of 750r/min, preheating to 86 ℃, sequentially adding 1.6kg of organic phosphite ester and 1.8kg of dimethyl phthalate in a stirring state, stirring for 4min, and drying in an oven at the temperature of 98 ℃ to obtain premix alpha;

s2, adopting 25kg of nylon 1214 with a melt index of 0.5g/10min and 11kg of polytetramethylene ether glycol as raw materials, mixing the raw materials and drying the raw materials in a vacuum drying oven, wherein the drying temperature is 86 ℃, the drying time is 3 hours, heating to 146 ℃ under a stirring state, adding 0.14kg of ethylene glycol antimony for reaction, the reaction time is 5 minutes, adding 110kg of premix alpha, 5kg of nano graphene and 0.5kg of vinyl triethoxysilane, continuing stirring for 3 minutes, cooling and crushing to obtain premix gamma;

s3, feeding the premix gamma into a double-roll open mill, turning at 129 ℃ for 5min, thinly passing for 5 times at a roll gap of 0.6mm, standing for 4h for curing, remilling the cured material for 8min to eliminate bubbles, feeding the material into a pressurizing machine for pressurizing treatment, repeating the pressurizing-pressure releasing mode for 4 times, feeding the material into a forming die, preheating at 166 ℃ for 6min, heating to 206 ℃, forming at 8MPa for 12min, cooling and reducing the pressure to obtain the insolation and aging resistant automobile charging pile shell.

The examples 3 to 5 were processed into test specimens by injection molding and subjected to mechanical property testing. The specific test method is as follows: tensile properties were tested according to ISO 527-2; bending performance testing was performed according to ISO 178; the simple beam notched impact strength was carried out according to ISO 179. The specific test method of the long-term thermal aging test is as follows: evaluating the long-term thermal stability of a test sample by exposing the test sample to a hot air aging oven at 150 ℃, the test time of the heat aging resistance test being 1000 hours, the test sample after aging in the hot air oven being tested for tensile strength according to ISO527-2 test method; the impact strength of the notch of the simply supported beam is tested according to the ISO179 test method, and the test result is as follows:

the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.