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A flame-retardant electric vehicle plastic shell

A technology for plastic shells and electric vehicles, applied in the field of flame retardant materials, can solve the problems of uneven surface, easy fire, poor flame retardant performance, etc., to prevent melting and dripping, improve mechanical properties and heat resistance, heat good stability

Active Publication Date: 2021-01-15
长沙盾甲新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing plastic casings used in electric vehicles are mainly composed of plastic substrates and coatings coated on the surface of the plastic body. Although they have the advantages of being seamless and easy to construct, they also have the following disadvantages: 1. Poor flame retardancy It is easy to cause problems such as fire, and the cost of some existing plastics with good flame-retardant properties is very high, and it is difficult to be widely used in electric vehicles
2. The existing electric vehicle casing is mainly made of rotomolding material, and its surface is uneven and difficult to clean

Method used

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  • A flame-retardant electric vehicle plastic shell
  • A flame-retardant electric vehicle plastic shell
  • A flame-retardant electric vehicle plastic shell

Examples

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preparation example Construction

[0037] The present invention also provides a kind of preparation method of polyurea resin, comprises the following steps:

[0038] (1) Mix the dehydrated siloxane polyether diol with diisocyanate and diluent evenly in a reaction kettle, and then react at 80-95°C for 2-4 hours to obtain component A;

[0039] (2) Mix the dehydrated amino-terminated polyether, the dehydrated amine chain extender with organic aluminum hypophosphite, polytetrafluoroethylene, ammonium polyphosphate, dipentaerythritol, and additives in a reactor, Stir at 120°C for 1-2 hours to obtain component B.

[0040] According to the present invention, in order to optimize the reaction efficiency, before the reaction, the present invention also dehydrates the raw materials under reduced pressure. Under the preferred conditions, the dehydration process of the siloxane polyether diol is as follows: the temperature is 100-120°C, The pressure is 0.02-0.1 MPa, and the time is 1-3 hours.

[0041]According to the pre...

Embodiment 1

[0053] The contents of each raw material in component A and component B in this embodiment are shown in Table 1.

[0054] (1) Preparation of polyurea resin:

[0055] Dehydrate 40 parts by weight of siloxane polyether diol at a temperature of 110°C and a pressure of 0.05 MPa for 2 hours, then mix the dehydrated siloxane polyether diol with 55 parts by weight of 4,4'- MDI and 5 parts by weight of DOP were mixed uniformly in the reactor, and then reacted at 90°C for 3 hours to obtain component A;

[0056] 50 parts by weight of D-2000 and 30 parts by weight of Ethacure300 were dehydrated for 1.5 hours at a temperature of 110°C and a pressure of 0.05 MPa, and then the dehydrated D-2000, dehydrated Ethacure300 and 8 parts by weight of organic hypophosphorous acid Aluminum, 1 part by weight of polytetrafluoroethylene, 8 parts by weight of ammonium polyphosphate, and 3 parts by weight of dipentaerythritol were uniformly mixed in a reactor, and stirred at 90° C. for 1.5 hours to obtai...

Embodiment 2

[0063] The contents of each raw material in component A and component B in this embodiment are shown in Table 2.

[0064] (1) Preparation of polyurea resin:

[0065] Dehydrate 50 parts by weight of siloxane polyether diol at a temperature of 110°C and a pressure of 0.02 MPa for 2 hours, then mix the dehydrated siloxane polyether diol with 45 parts by weight of 4,4'- MDI and 5 parts by weight of DBP were mixed uniformly in the reactor, and then reacted at 85°C for 3 hours to obtain component A;

[0066] 50 parts by weight of D-2000 and 30 parts by weight of Unilink4200 were dehydrated for 2 hours at a temperature of 110°C and a pressure of 0.05 MPa, and then the dehydrated D-2000, dehydrated Unilink4200 and 6 parts by weight of organic aluminum hypophosphite , 1 part by weight of polytetrafluoroethylene, 12 parts by weight of ammonium polyphosphate, and 1 part by weight of dipentaerythritol were mixed uniformly in a reaction kettle, and stirred at 100° C. for 1 hour to obtain ...

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Abstract

The invention relates to the technical field of a flame-retardant material, in particular to a flame-retardant type electromobile plastic shell. The flame-retardant type electromobile plastic shell comprises a plastic matrix, primer and a flame-retardant coating sequentially from top to bottom; the flame-retardant coating is prepared from polyurea resin; the polyurea resin comprises a component Aand a component B; the component A is prepared from a raw material composition 1; the raw material composition 1 comprises siloxane polyether polyol, diisocyanate and a diluent; the component B is prepared from a raw material composition 2; the raw material composition 2 comprises amine-terminated polyether, an amine chain extender, a composite flame retardant and an additive; and the composite flame retardant comprises organic aluminum hypophosphite, polytetrafluoroethylene, ammonium polyphosphate and dipentaerythritol. The surface of the plastic matrix is coated with the flame-retardant coating containing a flame retardant, so that the flame retardance of the plastic matrix is improved, the surface smoothness of the plastic matrix is improved and later cleaning is facilitated.

Description

technical field [0001] The invention relates to the technical field of flame-retardant materials, in particular to a flame-retardant electric vehicle plastic casing. Background technique [0002] Electric vehicles are energy-saving and environmentally friendly, and play an important role in the national economy by saving and protecting energy and the environment. With the development of society, the share of electric vehicles in the national economy is also increasing. Most existing electric vehicles include an electric motor that generates rotational force, a battery that supplies power to the motor, an inverter that controls the RPM of the motor, a battery charger that charges the battery by using electricity, and plastic that protects the above components shell. [0003] The existing plastic casings used in electric vehicles are mainly composed of plastic substrates and coatings coated on the surface of the plastic body. Although they have the advantages of being seamles...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/05C09D175/02C09D5/18C08G18/50C08G18/61
CPCC08G18/5024C08G18/61C08J7/042C08J2475/02C08K2003/323C09D5/18C09D175/02C08L27/18C08K5/5313C08K3/32C08K5/06
Inventor 罗世彬裘航盛
Owner 长沙盾甲新材料科技有限公司
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