CN-116587694-B - Ablation-resistant composite protection plate and preparation method thereof

Abstract

The invention relates to an ablation-resistant composite protection plate, which comprises a base layer, a transition layer and a composite material layer, wherein the base layer, the transition layer and the composite material layer are sequentially laminated and compounded to form the ablation-resistant composite protection plate, the base layer is a metal plate, the transition layer is a PUR hot melt adhesive and glass fiber mixed layer, and the composite material layer is a phenolic resin-based prepreg glass fiber layer. According to the ablation-resistant composite protection plate and the preparation method thereof, through compounding of the phenolic resin-based prepreg glass fiber layer, the PUR hot melt adhesive and the glass fiber mixed layer and the metal panel layer, the ablation-resistant composite protection plate has excellent performances of ablation resistance, load resistance, impact resistance, heat preservation, sound insulation and the like, and is simple in structure and low in manufacturing cost.

Inventors

• DAI CHUFA
• ZHANG YANHUI
• MAO XIAOKE
• LIN LIJUN
• CHEN HAOYONG
• LI DANDAN
• XIA SHUMEI

Assignees

• 宁波市阳光汽车配件有限公司

Dates

Publication Date

20260508

Application Date

20230523

Claims (1)

1. 1. The ablation-resistant composite protection plate comprises a base layer (1), a transition layer (2) and a composite material layer (3), and is characterized in that the base layer (1), the transition layer (2) and the composite material layer (3) are sequentially laminated and compounded to form the ablation-resistant composite protection plate, the base layer (1) is a metal plate, the transition layer (2) is a PUR hot melt adhesive and glass fiber mixed layer, and the composite material layer (3) is a phenolic resin-based prepreg glass fiber layer; The base layer (1) is formed by stamping any one of a cold-rolled plate, a galvanized plate and a stainless steel plate, and the thickness of the base layer (1) is 0.6-1mm; The preparation method of the ablation-resistant composite protection plate comprises the following steps: S1, preparing a base layer (1) by adopting any one of a cold-rolled plate, a galvanized plate and a stainless steel plate to be stamped and formed, and coating a layer of fireproof paint on the outer surface of the prepared base layer (1); S2, preparing a glass fiber felt by adopting a needling process, and placing the prepared glass fiber felt into a phenolic resin-based pre-dipping solution for pre-dipping to prepare a phenolic resin-based pre-dipping glass fiber layer, and taking at least one phenolic resin-based pre-dipping glass fiber layer for hot press molding to prepare a composite material layer (3); S3, uniformly spraying the PUR hot melt adhesive on the back surface of the panel of the base layer (1) in a spiral adhesive spraying mode, and simultaneously, synchronously carrying out glass fiber chopping and uniformly covering on the PUR hot melt adhesive liquid in the spraying process to prepare a transition layer (2); s4, placing the prepared composite material layer (3) on the back of the substrate panel, and bonding and compounding the base layer (1) and the composite material layer (3) through the transition layer (2) by a compounding and shaping tool to prepare an ablation-resistant composite protection plate; The base layer (1) is provided with a plurality of bolt holes (11) and rivet holes (12) which are integrally formed on the plate surface, the bolt holes (11) are formed, the plurality of bolt holes (11) are respectively formed in four corners and the middle part of the base layer (1), the plurality of rivet holes (12) are formed in a plurality of mode, and the plurality of rivet holes (12) are distributed at intervals along the peripheral side of the edge of the base layer (1); the distance between adjacent rivet holes (12) is 100mm; In the step S1, the thickness of a base layer (1) formed by stamping any one of a cold-rolled plate, a galvanized plate and a stainless steel plate is 0.6-1mm, and a bolt hole (11) and a rivet hole (12) are integrally formed on a panel of the base layer (1); In the step S2, the glass fiber felt dosage is 50-100 g/square, the temperature of a thermal forming die is 180-200 ℃ when the phenolic resin-based presoaked glass fiber layer is formed in a hot-press mode, the pressure is 6-7MPa, and the pressure maintaining time is 35-45S; In the step S3, the spraying amount of the PUR hot melt adhesive is 80-100 g/square, and the glass fiber is paved at 200 g/square; in the step S4, the pressure of the pressing and shaping of the composite shaping tool is 0.5-0.6MPa, and the pressure maintaining time is 15+/-2S.

Description

Ablation-resistant composite protection plate and preparation method thereof Technical Field The invention relates to the technical field of composite protection plates, in particular to an ablation-resistant composite protection plate and a preparation method thereof. Background In the prior art, a battery pack of a new energy automobile is an important component part of the battery pack, and a protection plate is one of protection measures for the battery pack. For new energy automobiles, the energy density (the electric quantity of the potential volume) of the battery pack is a key factor. The higher the energy density of the battery pack with the same volume is, the more electric quantity is stored in the battery pack, and accordingly, the longer the endurance mileage of the new energy automobile is. In order to increase the energy density of the battery pack, the outer case, the protection plate, and the like of the battery pack should be as small or thin as possible. The prior protection plates are generally made of single materials, such as plates made of metal materials, and the plates may have the problems of different thermal expansion coefficients, easy rust, excessive weight and the like in the use process, so that the use effect and the service life of the plates are affected. To solve these problems, a combination of materials, such as metal-ceramic, metal-polyimide, and other composite materials, has been introduced in the prior art to make composite shields. However, these composite protection plates still have some problems, such as complex structure, high processing difficulty, high cost, etc. Disclosure of Invention In order to solve the problems, the invention provides the composite protection plate with simple structure, low manufacturing cost and excellent protection performance and the preparation method thereof. In order to achieve the purpose, the ablation-resistant composite protection plate comprises a base layer, a transition layer and a composite material layer, wherein the base layer, the transition layer and the composite material layer are sequentially laminated and compounded to form the ablation-resistant composite protection plate, the base layer is a metal plate, the transition layer is a PUR hot melt adhesive and glass fiber mixed layer, and the composite material layer is a phenolic resin-based prepreg glass fiber layer. The base layer is formed by stamping any one of a cold-rolled plate, a galvanized plate and a stainless steel plate, and the thickness of the base layer is 0.6-1mm. Further scheme is, integrated into one piece has bolt hole and rivet hole on the basic unit's face, the bolt hole is equipped with a plurality ofly, and basic unit four corners and mid portion are located respectively to a plurality of bolt holes, the rivet hole is provided with a plurality ofly, and a plurality of rivet holes are laid along basic unit edge week side interval. Further, the distance between adjacent rivet holes is 100mm. The preparation method of the ablation-resistant composite protection plate comprises the following steps: S1, preparing a base layer by adopting any one of a cold-rolled plate, a galvanized plate and a stainless steel plate to form a stamping forming mode, and coating a layer of fireproof paint on the outer surface of the prepared base layer; s2, preparing a glass fiber felt by adopting a needling process, and placing the prepared glass fiber felt into a phenolic resin-based pre-dipping solution for pre-dipping to prepare a phenolic resin-based pre-dipping glass fiber layer, and taking at least one phenolic resin-based pre-dipping glass fiber layer for hot press molding to prepare a composite material layer; S3, uniformly spraying the PUR hot melt adhesive on the back surface of the base layer panel in a spiral adhesive spraying mode, and synchronously carrying out glass fiber chopping in the spraying process and uniformly covering the PUR hot melt adhesive to prepare a transition layer; S4, placing the prepared composite material layer on the back surface of the substrate panel, and bonding and compounding the base layer and the composite material layer through a transition layer by using a compound shaping tool to prepare the ablation-resistant composite protection plate. In the further scheme, in the step S1, the thickness of a base layer formed by stamping any one of a cold-rolled plate, a galvanized plate and a stainless steel plate is 0.6-1mm, and a bolt hole and a rivet hole are integrally formed in a panel of the base layer. In the further scheme, in the step S2, the glass fiber felt dosage is 50-100 g/square, and when the phenolic resin-based presoaked glass fiber layer is hot-pressed and formed, the temperature of a hot forming die is 180-200 ℃, the pressure is 6-7MPa, and the pressure maintaining time is 35-45S. In a further proposal, in the step S3, the spraying amount of the PUR hot melt adhesive is 80-100 g/square, and the glass fiber is paved