WO2019114004A1

WO2019114004A1 - High temperature resistant intelligent on-board charger

Info

Publication number: WO2019114004A1
Application number: PCT/CN2017/117249
Authority: WO
Inventors: 陆晨华
Original assignee: 陆晨华
Priority date: 2017-12-15
Filing date: 2017-12-19
Publication date: 2019-06-20
Also published as: CN107955474A

Abstract

Provided is a high temperature resistant intelligent on-board charger, comprising a housing and a main circuit board disposed inside the housing; a protective layer is provided on both the inner and outer surfaces of the housing, the protective layer including the following components in parts by mass: acrylic resin, polyaryl ether sulfone ketone modified resin, polyvinyl methyl ether, fluorinated graphene, talc powder, chlorinated paraffin, a stabilizer, a ADC foaming agent, silicone oil, a composite flame retardant, a chain extender, a neutralizer, a catalyst and a rare earth element. The charger has good high temperature resistance, long service life and low cost.

Description

High temperature resistant intelligent car charger

Technical field

The invention relates to a charger, in particular to a high temperature resistant intelligent vehicle charger, belonging to the field of smart home equipment.

Background technique

With the rapid development of the global economy, people's living standards continue to improve, and more and more portable electronic products, such as IPAD, IPHONE, notebook computers, tablets, other mobile phones, digital cameras, camcorders, portable DVDs. , PDA, MP3, MP4, GPS navigator, health care equipment, etc.; however, with the frequent use, the charging time of several hours, the portability of these mobile digital devices has been greatly restricted.

With the development of the automotive industry, car chargers are widely used, showing the characteristics of versatility, portability, and fashion. The car charger can charge mobile digital devices such as mobile phones and GPS navigators while driving. The two most important requirements for car chargers are safety and versatility. When used, the temperature may cause excessive temperature. Raising, it will damage the quality of the charger itself, shorten the service life and increase the cost.

Summary of the invention

The technical problem to be solved by the present invention is to provide a high temperature resistant intelligent vehicle charger with the advantages of the above prior art, which has good high temperature resistance, long service life and low cost.

The technical solution of the present invention to solve the above technical problems is:

A high temperature resistant intelligent vehicle charger includes a casing and a main circuit board disposed inside the casing, and a protective layer is respectively disposed on the inner and outer surfaces of the casing, and the protective layer comprises the following components in mass parts:

Acrylic resin: 12-15 parts, polyaryl ether sulfone ketone modified resin: 15-20 parts, polyvinyl methyl ether: 1-3 parts, fluorinated graphene: 2-4 parts, talcum powder: 1-3 parts Chlorinated paraffin: 1-2 parts, stabilizer: 5-7 parts, ADC foaming agent: 3-5 parts, silicone oil: 3-5 parts, composite flame retardant: 5-9 parts, chain extender: 2 -3 parts, neutralizing agent: 1-2 parts, catalyst: 0.5-1 part, rare earth element: 0.2-0.4 part, wherein:

The rare earth elements include the following components in terms of mass percentage:

铈: 1-3%, 镝: 7-9%, bait: 10-12%, 铽: 3-6%, 镥: 3-5%, 镨: 11-13%, the balance is lanthanide, above The sum of the components is 100%.

The technical solution further defined by the present invention is:

In the foregoing high temperature resistant intelligent car charger, the protective layer comprises the following components in parts by mass:

Acrylic resin: 12 parts, polyaryl ether sulfone ketone modified resin: 15 parts, polyvinyl methyl ether: 1 part, fluorinated graphene: 2 parts, talc: 1 part, chlorinated paraffin: 1 part, stabilizer : 5 parts, ADC foaming agent: 3 parts, silicone oil: 3 parts, composite flame retardant: 5 parts, chain extender: 2 parts, neutralizer: 1 part, catalyst: 0.5 part, rare earth element: 0.2 part, among them:

铈: 1%, 镝: 7%, bait: 10%, 铽: 3%, 镥: 3%, 镨: 11%, the balance is lanthanide, and the sum of the above components is 100%.

Acrylic resin: 13 parts, polyaryl ether sulfone ketone modified resin: 18 parts, polyvinyl methyl ether: 2 parts, fluorinated graphene: 3 parts, talc: 2 parts, chlorinated paraffin: 1.5 parts, stabilizer : 6 parts, ADC foaming agent: 4 parts, silicone oil: 4 parts, composite flame retardant: 7 parts, chain extender: 2 parts, neutralizer: 1 part, catalyst: 0.8 parts, rare earth element: 0.3 parts, among them:

铈: 2%, 镝: 8%, bait: 11%, 铽: 5%, 镥: 4%, 镨: 12%, the balance is lanthanide, and the sum of the above components is 100%.

The aforementioned high temperature resistant intelligent car charger, the preparation method of the silicone oil is as follows:

Isopropanol was added to a three-necked flask equipped with a stirrer, and then the amino polyether and the epoxy blocking agent were added together to a three-necked flask, the stirring speed was adjusted to 100-120 r/min, and the temperature was raised to 80-90 ° C under stirring, and the reaction was carried out. -3h, then adding octamethylcyclotetrasiloxane, coupling agent DL-602 and tetramethylammonium hydroxide, vacuuming at 60-70 ° C, 60kPa for 20-30min, to obtain colorless to pale yellow transparent A thick liquid is a silicone oil.

The aforementioned high temperature resistant intelligent vehicle charger has a stabilizer of calcium and zinc; the composite flame retardant is a proportionally mixed phosphorous nitrous oxide ternary flame retardant and melamine urate; the chain extender is N-methyldiethanolamine, neutralizing The agent is sodium carbonate and glacial acetic acid, and the catalyst is dibutyltin dilaurate;

The above-mentioned high temperature resistant intelligent vehicle charger, polyaryl ether sulfone ketone modified resin preparation method is specifically operated as follows: polyaryl ether sulfone ketone and epoxy resin are mixed in a ratio of 1:2, and the mixture is melted to obtain a prepolymer PEK/ EP, the melting temperature is 280-300 ° C, and then the prepolymer is powdered by a powder machine to obtain a polyaryl ether sulfone ketone modified resin.

The aforementioned high temperature intelligent car charger, the preparation process of the protective layer is as follows:

(1) The acrylic resin and the poly(aryl ether sulfone ketone) modified resin are sieved to remove larger particles, and then sent to an internal mixer to add polyvinyl methyl ether, fluorinated graphene, silicone oil, chlorine to the internal mixer. Paraffin wax, talc powder and stabilizer, evenly mixed;

(2) adding the composite flame retardant and the chain extender to the mixture of the step (1), stirring for 20-30 min, controlling the stirring speed to be 100-150 r/min, and then adding the catalyst, the rare earth element, the neutralizing agent, and mixing. Evenly, a protective layer coating can be obtained;

(3) The protective layer coating is then sprayed on the inner and outer surfaces of the casing to form a protective layer.

The beneficial effects of the invention are:

The protective layer of the present invention is added with fluorinated graphene, which is the latest generation of carbon-based two-dimensional nano material, which combines the advantages of high strength, high toughness, high electrical conductivity and high thermal conductivity, but due to the poor dispersibility of graphene, Zero-gap, non-magnetic and other problems have limited its wider application. Fluorination modification is one of the effective means to solve the problems faced by graphene. Fluorinated graphene has adjustable resistivity and adjustable energy gap. Good dispersibility, high transparency and excellent functional integration. By direct fluorination of graphene oxide, the in-situ coupling of fluorine radicals in the process of leaving oxygen-containing groups is achieved. Macro-preparation of F/C ratio of fluorinated graphene (FG) [15]. On the basis of this, as the fluorine content increases, the dielectric constant and dielectric loss decrease gradually, and the dielectric strength gradually increases. The performance is continuously improved, and the dielectric constant is as low as 1.5, which is lower than the dielectric constant of the currently reported fluorocarbon, and has low dielectric loss and surface resistivity of 10 12 Ω or more.

The composite flame retardant used in the invention has the advantages of non-toxicity, high flame retardant efficiency, and the like, and can achieve the purpose of flame retardant by sublimation and decomposition of the inert gas released, and the phosphorus and nitrogen have synergistic flame retardant effect under certain conditions. The compound flame retardant is used to make the flame retardant substrate have better flame retarding effect, and the limiting oxygen index can also be improved. At the same time, the added composite flame retardant has high temperature resistance, water resistance and migration resistance, and the general resistance is improved. The fuel is not resistant to water and easy to precipitate and has low temperature resistance. It can be smoothly extruded at a processing temperature of 200°C-280°C without decomposition. In the 98% humidity+85°C high temperature and high humidity environment, there is no crack on the surface of the sample for 7 days. No precipitates.

In the present invention, the use of talc as a solid filler has excellent physical and chemical properties such as lubricity and anti-adhesion, and can improve the leveling property of the coating film and adsorb gas.

In the present invention, chlorinated paraffin is used as a liquid filler, and the chlorinated paraffin has low viscosity and good miscibility with each component, which can reduce the viscosity of the system and improve the performance of the coating film.

The composite rare earth of the present invention has a large metal atom radius and a high activity of the rare earth element, and it is easy to fill the voids between the materials. At the same time, the rare earth element is easily combined with elements such as oxygen and sulfur to form a compound having a high melting point, and is compounded. The addition of rare earth improves the dispersibility and compatibility of the prepared materials to a certain extent, so that the uniform mixing of the products also improves the flame retardancy of the protective layer.

Detailed ways

Example 1

The embodiment provides a high temperature resistant intelligent vehicle charger, comprising a casing and a main circuit board disposed inside the casing, wherein a protective layer is respectively disposed on the inner and outer surfaces of the casing, and the protective layer includes the following according to the mass fraction; Component:

铈: 1%, 镝: 7%, bait: 10%, 铽: 3%, 镥: 3%, 镨: 11%, the balance is lanthanide, the sum of the above components is 100%;

The stabilizer is calcium zinc; the composite flame retardant is a proportionally mixed phosphazene ternary flame retardant and melamine urate; the chain extender is N-methyldiethanolamine, and the neutralizing agent is sodium carbonate and glacial acetic acid. The catalyst was dibutyltin dilaurate.

The above preparation method of the silicone oil is as follows:

Isopropanol was added to a three-necked flask equipped with a stirrer, and then the amino polyether and the epoxy blocking agent were added together to a three-necked flask, the stirring speed was adjusted to 100 r/min, and the temperature was raised to 80 ° C under stirring, and the reaction was carried out for 2 hours, and then eight were added. Methylcyclotetrasiloxane, coupling agent DL-602 and tetramethylammonium hydroxide were vacuumed at 60 ° C and 60 kPa for 20 min to obtain a colorless to pale yellow transparent thick liquid which was a silicone oil.

The preparation method of the above polyaryl ether sulfone ketone modified resin is specifically as follows: the polyaryl ether sulfone ketone and the epoxy resin are mixed in a ratio of 1:2, and the mixture is melted to obtain a prepolymer PEK/EP, and the melting temperature is 280 ° C. Then, the prepolymer is powdered by a powder machine to obtain a polyaryl ether sulfone ketone modified resin.

The preparation process of the above protective layer is as follows:

(2) adding the composite flame retardant and the chain extender to the mixture of step (1), stirring for 20 min, controlling the stirring speed to 100 r/min, then adding the catalyst, the rare earth element, the neutralizing agent, and uniformly mixing to obtain protection. Layer coating

Example 2

铈: 2%, 镝: 8%, bait: 11%, 铽: 5%, 镥: 4%, 镨: 12%, the balance is lanthanide, the sum of the above components is 100%;

The above preparation method of the silicone oil is as follows:

Isopropanol was added to a three-necked flask equipped with a stirrer, and then the amino polyether and the epoxy blocking agent were added together into a three-necked flask, the stirring speed was adjusted to 110 r/min, and the temperature was raised to 85 ° C under stirring, and the reaction was carried out for 2 hours, and then eight were added. Methylcyclotetrasiloxane, coupling agent DL-602 and tetramethylammonium hydroxide were vacuumed at 65 ° C and 60 kPa for 25 min to obtain a colorless to pale yellow transparent thick liquid which was a silicone oil.

The preparation method of the above polyaryl ether sulfone ketone modified resin is specifically as follows: the polyaryl ether sulfone ketone and the epoxy resin are mixed in a ratio of 1:2, and the mixture is melted to obtain a prepolymer PEK/EP, and the melting temperature is 290 ° C. Then, the prepolymer is powdered by a powder machine to obtain a polyaryl ether sulfone ketone modified resin.

The preparation process of the above protective layer is as follows:

(2) Adding the composite flame retardant and the chain extender to the mixture of step (1), stirring for 25 minutes, controlling the stirring speed to be 130r/min, then adding the catalyst, rare earth element, neutralizing agent, and evenly mixing can be protected. Layer coating

Other than the above-described embodiments, the present invention may have other embodiments. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

A high temperature resistant intelligent vehicle charger, comprising: a housing and a main circuit board disposed inside the housing, wherein the inner and outer surfaces of the housing are respectively provided with a protective layer, and the protective layer is massed The number of copies includes the following components:

Acrylic resin: 12-15 parts, polyaryl ether sulfone ketone modified resin: 15-20 parts, polyvinyl methyl ether: 1-3 parts, fluorinated graphene: 2-4 parts, talcum powder: 1-3 parts Chlorinated paraffin: 1-2 parts, stabilizer: 5-7 parts, ADC foaming agent: 3-5 parts, silicone oil: 3-5 parts, composite flame retardant: 5-9 parts, chain extender: 2 -3 parts, neutralizing agent: 1-2 parts, catalyst: 0.5-1 part, rare earth element: 0.2-0.4 part, wherein:

The rare earth element includes the following components in terms of mass percentage:

铈: 1-3%, 镝: 7-9%, bait: 10-12%, 铽: 3-6%, 镥: 3-5%, 镨: 11-13%, the balance is lanthanide, above The sum of the components is 100%.
The high temperature resistant intelligent vehicle charger according to claim 1, wherein the protective layer comprises the following components in parts by mass:

Acrylic resin: 12 parts, polyaryl ether sulfone ketone modified resin: 15 parts, polyvinyl methyl ether: 1 part, fluorinated graphene: 2 parts, talc: 1 part, chlorinated paraffin: 1 part, stabilizer : 5 parts, ADC foaming agent: 3 parts, silicone oil: 3 parts, composite flame retardant: 5 parts, chain extender: 2 parts, neutralizer: 1 part, catalyst: 0.5 part, rare earth element: 0.2 part, among them:

The rare earth element includes the following components in terms of mass percentage:

铈: 1%, 镝: 7%, bait: 10%, 铽: 3%, 镥: 3%, 镨: 11%, the balance is lanthanide, and the sum of the above components is 100%.
The high temperature resistant intelligent vehicle charger according to claim 1, wherein the protective layer comprises the following components in parts by mass:

Acrylic resin: 13 parts, polyaryl ether sulfone ketone modified resin: 18 parts, polyvinyl methyl ether: 2 parts, fluorinated graphene: 3 parts, talc: 2 parts, chlorinated paraffin: 1.5 parts, stabilizer : 6 parts, ADC foaming agent: 4 parts, silicone oil: 4 parts, composite flame retardant: 7 parts, chain extender: 2 parts, neutralizer: 1 part, catalyst: 0.8 parts, rare earth element: 0.3 parts, among them:

The rare earth element includes the following components in terms of mass percentage:

铈: 2%, 镝: 8%, bait: 11%, 铽: 5%, 镥: 4%, 镨: 12%, the balance is lanthanide, and the sum of the above components is 100%.
The high temperature resistant intelligent vehicle charger according to any one of claims 1 to 3, wherein the preparation method of the silicone oil is as follows:

Isopropanol was added to a three-necked flask equipped with a stirrer, and then the amino polyether and the epoxy blocking agent were added together to a three-necked flask, the stirring speed was adjusted to 100-120 r/min, and the temperature was raised to 80-90 ° C under stirring, and the reaction was carried out. -3h, then adding octamethylcyclotetrasiloxane, coupling agent DL-602 and tetramethylammonium hydroxide, vacuuming at 60-70 ° C, 60kPa for 20-30min, to obtain colorless to pale yellow transparent A thick liquid is a silicone oil.
The high temperature resistant intelligent vehicle charger according to any one of claims 1 to 3, wherein the stabilizer is calcium zinc; and the composite flame retardant is a mixture of phosphorus oxynitrides in an equal proportion. a flame retardant and a melamine urate; the chain extender is N-methyldiethanolamine, the neutralizing agent is sodium carbonate and glacial acetic acid, and the catalyst is dibutyltin dilaurate;
The high temperature resistant intelligent vehicle charger according to any one of claims 1 to 3, characterized in that the polyaryl ether sulfone ketone modified resin preparation method is specifically operated as follows: polyaryl ether sulfone ketone and ring The oxygen resin is mixed in a ratio of 1:2, and the mixture is melted to obtain a prepolymer PEK/EP, the melting temperature is 280-300 ° C, and then the prepolymer is powdered into a powder to obtain a polyaryl ether sulfone ketone modified Resin.
The high temperature resistant intelligent vehicle charger according to any one of claims 1 to 3, characterized in that the preparation process of the protective layer is as follows:

(1) The acrylic resin and the poly(aryl ether sulfone ketone) modified resin are sieved to remove larger particles, and then sent to an internal mixer to add polyvinyl methyl ether, fluorinated graphene, silicone oil, chlorine to the internal mixer. Paraffin wax, talc powder and stabilizer, evenly mixed;

(2) adding the composite flame retardant and the chain extender to the mixture of the step (1), stirring for 20-30 min, controlling the stirring speed to be 100-150 r/min, and then adding the catalyst, the rare earth element, the neutralizing agent, and mixing. Evenly, a protective layer coating can be obtained;

(3) The protective layer coating is then sprayed on the inner and outer surfaces of the casing to form a protective layer.