阅读说明：本技术 一种高阻燃性dcpc复合材料及应用 (High-flame-retardancy DCPC composite material and application thereof ) 是由 陈吉清 程仁杰 周云郊 兰凤崇 于 2019-10-30 设计创作，主要内容包括：本发明属于复合材料领域,公开了一种高阻燃性DCPC复合材料及应用。所述高阻燃性DCPC复合材料由原料A料和B料按质量比A:B＝0.6～1.6的比例混合制成,其中,A料包括如下重量份配比的组分：DCPD82～93份、催化剂1～6份、稳定剂0.3～4份、添加剂1～10份；B料包括如下重量份配比的组分：DCPD82～93份、活化剂2～4份、调节剂9～12份。将A料和B料按质量比配好后混合,然后充入模具中,固化定型后脱模,得到车用动力电池内部模组保持架。本发明所提供的DCPD复合材料车用动力电池内部模组保持架,具有耐热、耐酸碱、耐磨、质量轻等优良性能,并且具有良好的绝缘性和阻燃性,成本低廉。(The invention belongs to the field of composite materials, and discloses a high-flame-retardancy DCPC composite material and application thereof. The high-flame-retardancy DCPC composite material is prepared by mixing a material A and a material B according to the mass ratio of 0.6-1.6, wherein the material A comprises the following components in parts by weight: 82-93 parts of DCPD, 1-6 parts of catalyst, 0.3-4 parts of stabilizer and 1-10 parts of additive; the material B comprises the following components in parts by weight: 82-93 parts of DCPD, 2-4 parts of an activator and 9-12 parts of a regulator. And mixing the material A and the material B according to the mass ratio, then filling the mixture into a mold, curing and shaping the mixture, and demolding the solidified mixture to obtain the internal module retainer of the vehicle power battery. The DCPD composite material vehicle power battery internal module retainer provided by the invention has excellent performances of heat resistance, acid and alkali resistance, wear resistance, light weight and the like, and has good insulativity and flame retardance and low cost.)

1. A DCPC composite material with high flame retardance is characterized in that: the material A and the material B are mixed according to the mass ratio of A to B being 0.6-1.6, wherein,

the material A comprises the following components in parts by weight: 82-93 parts of DCPD, 1-6 parts of catalyst, 0.3-4 parts of stabilizer and 1-10 parts of additive;

the material B comprises the following components in parts by weight: 82-93 parts of DCPD, 2-4 parts of an activating agent and 9-12 parts of a regulator.

2. The high flame retardant DCPC composite according to claim 1, wherein: the high-flame-retardancy DCPC composite material is prepared by mixing a material A and a material B according to the mass ratio of 0.8-1.3.

3. The high flame retardant DCPC composite according to claim 1, wherein: the high-flame-retardancy DCPC composite material is prepared by mixing a material A and a material B according to the mass ratio of A to B to l.

4. The high flame retardant DCPC composite according to claim 1, wherein: the catalyst is a tungsten catalyst or lithium manganite; the stabilizing agent is an alkene soil stabilizing agent; the additive is at least one of glass fiber, carbon fiber and aramid fiber; the activating agent is at least one of alkyl aluminum, toluene and 2, 6-di-tert-butyl-4-methylphenol; the regulator is at least one of benzophenone and petroleum ether.

5. The high flame retardant DCPC composite according to claim 4, wherein: the tungsten catalyst is selected from tungsten hexachloride or simple substance tungsten.

6. The application of the high flame retardant DCPC composite material of any one of claims 1 to 5 in the preparation of an internal module retainer of a power battery for a vehicle is characterized by comprising the following application steps:

and mixing the material A and the material B according to the mass ratio, then filling the mixture into a mold of the internal module retainer of the vehicle power battery, curing and shaping the mixture, and demolding the solidified mixture to obtain the internal module retainer of the vehicle power battery.

7. The use of the high flame retardant DCPC composite material according to claim 6 in the preparation of module holders inside power batteries for vehicles is characterized in that: the temperature of the mixed material of the material A and the material B is 20 +/-2 ℃, and the mixing time is 5 +/-2 seconds.

8. The use of the high flame retardant DCPC composite material according to claim 6 in the preparation of module holders inside power batteries for vehicles is characterized in that: the temperature of the female mold filled into the mold is 70 +/-3 ℃, the temperature of the male mold is 50 +/-3 ℃, the injection pressure of the material is 50 +/-5 bar, and the mold filling time is 10 +/-2 seconds.

9. The use of the high flame retardant DCPC composite material according to claim 6 in the preparation of module holders inside power batteries for vehicles is characterized in that: the curing and setting are to keep a stable pressure for 27 seconds after filling the mold so as to cure and set the part.

10. The use of the high flame retardant DCPC composite material according to claim 6 in the preparation of module holders inside power batteries for vehicles is characterized in that: after demolding, burrs and the like existing in the workpiece are further modified.

Technical Field

The invention belongs to the field of composite materials, and particularly relates to a high-flame-retardancy DCPC composite material and application thereof.

Background

With the increasing global energy crisis and environmental pollution, people are forced to take new measures for the development of the automobile industry, and electric automobiles are a world-recognized solution. The power battery box of the electric automobile is a key part of the electric automobile as a power source carried by the electric automobile, and the quality of the performance of the power battery box can have great influence on the application prospect of the electric automobile. After years of development, the types of the existing power batteries for the vehicles are very many, different requirements are also provided for the components of the power batteries for the vehicles, and the internal module retainer of the power batteries for the vehicles is mainly made of PP plastic at first, so that the power batteries for the vehicles have the advantages of light weight, low cost and poor strength, thermal conductivity and flame retardant property. With the popularization of lithium ion power batteries and the great improvement of specific energy of the batteries, the module holder in the battery is required to have good heat dissipation, strength, insulativity, corrosion resistance and flame retardance, and the material selection begins to develop towards metal materials, mainly by using 3003 aluminum alloy. At present, the lithium ion battery of the electric automobile generally uses aluminum alloy to manufacture the internal module retainer and the whole battery box shell, but the metal material still has obvious defects, the production cost is higher, the weight is heavier, and the strength and the fatigue resistance are insufficient.

DCPD (Dicyclopentadiene) is short for C₁₀H₁₂The molecular weight is 132, the melting point is 32 ℃, the boiling point is 170 ℃, and the liquid is colorless or light yellow liquid at normal temperature. DCPD has excellent physical properties, is an excellent engineering plastic, and has been widely used in the automobile industry to produce automobile bumpers, spoilers, instrument panel boxes, trunk covers, lamp holders, and the like. However, no one has applied this material to the inner module holder of the power battery for vehicles.

Disclosure of Invention

Aiming at the defects and shortcomings of the prior art, the invention mainly aims to provide a DCPC composite material with high flame retardance.

The invention also aims to provide application of the high-flame-retardancy DCPC composite material in preparation of an internal module retainer of a power battery for a vehicle.

The purpose of the invention is realized by the following technical scheme:

a high-flame-retardancy DCPC composite material is prepared by mixing a material A and a material B according to the mass ratio of A to B being 0.6-1.6,

the material A comprises the following components in parts by weight: 82-93 parts of DCPD, 1-6 parts of catalyst, 0.3-4 parts of stabilizer and 1-10 parts of additive;

the material B comprises the following components in parts by weight: 82-93 parts of DCPD, 2-4 parts of an activating agent and 9-12 parts of a regulator.

Further, the high-flame-retardancy DCPC composite material is prepared by mixing a material A and a material B according to the mass ratio of A to B being 0.8-1.3.

Furthermore, the high-flame-retardancy DCPC composite material is prepared by mixing the material A and the material B according to the mass ratio of A to B to l.

Further, the catalyst is a tungsten catalyst or lithium manganite.

Further, the tungsten-based catalyst is selected from tungsten hexachloride or elemental tungsten.

Further, the stabilizer is an alkene soil stabilizer.

Further, the additive is at least one of glass fiber, carbon fiber and aramid fiber.

Further, the activating agent is at least one of alkyl aluminum, toluene and 2, 6-di-tert-butyl-4-methylphenol.

Further, the regulator is at least one of benzophenone and petroleum ether.

The application of the high-flame-retardancy DCPC composite material in preparing the module retainer in the power battery for the vehicle comprises the following application steps:

and mixing the material A and the material B according to the mass ratio, then filling the mixture into a mold of the internal module retainer of the vehicle power battery, curing and shaping the mixture, and demolding the solidified mixture to obtain the internal module retainer of the vehicle power battery.

Further, the temperature of the mixed material of the material A and the material B is 20 +/-2 ℃, and the mixing time is 5 +/-2 seconds.

Further, the temperature of the female mold filled into the mold is 70 +/-3 ℃, the temperature of the male mold is 50 +/-3 ℃, the injection pressure of the material is 50 +/-5 bar, and the mold filling time is 10 +/-2 seconds.

Further, the curing and setting means that the pressure is kept for 27 seconds after the mold is filled, so that the part is cured and set.

Further, burrs and the like present in the article are further modified after the demolding.

The principle of the invention is as follows: A. under the catalysis of a catalyst, the DCPD in the material B leads the raw materials to have polymerization reaction, and polydicyclopentadiene is obtained through ring-opening metathesis polymerization; additives such as glass fiber, carbon fiber and the like are added to change the performance of the polymer material and increase the strength and the flame retardance of the material; adding stabilizer to maintain chemical balance, reduce surface tension of the product and prevent decomposition and aging of the polymer product; adding an activator to increase the activation of the reaction substance and promote the polymerization or polycondensation among molecules in the high molecular polymer; the regulator is added to control the relative molecular mass in the polymerization reaction and prevent the polymer from gelling. The invention mixes the material A and the material B according to the proportion: one is that the respective pre-proportioning mixing process of the A, B materials is also an important step of the finished product with excellent final performance from the viewpoint of material performance; and secondly, from the aspects of process and equipment, the quality proportion can be controlled more easily and accurately by directly adding the premixed A, B material, and the mass production is facilitated.

Compared with the prior art, the invention has the following advantages and beneficial effects:

the DCPD composite material vehicle power battery internal module retainer provided by the invention has excellent performances of heat resistance, acid and alkali resistance, wear resistance, light weight and the like, and has good insulativity and flame retardance and low cost.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.