CN110922814A - Double-layer spraying type steel plate reinforcing damping material and preparation and construction methods and coating thereof - Google Patents

Double-layer spraying type steel plate reinforcing damping material and preparation and construction methods and coating thereof Download PDF

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CN110922814A
CN110922814A CN201911148151.0A CN201911148151A CN110922814A CN 110922814 A CN110922814 A CN 110922814A CN 201911148151 A CN201911148151 A CN 201911148151A CN 110922814 A CN110922814 A CN 110922814A
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rubber
layer
epoxy
steel plate
coating
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陈杰
王野
李玉磊
于江波
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Baoguang (tianjin) Automotive Parts Co Ltd
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Baoguang (tianjin) Automotive Parts Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D109/00—Coating compositions based on homopolymers or copolymers of conjugated diene hydrocarbons
    • C09D109/06—Copolymers with styrene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • B05D7/542—No clear coat specified the two layers being cured or baked together
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2504/00—Epoxy polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2530/00—Rubber or the like

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  • Inorganic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

The application discloses a double-layer spraying type steel plate reinforcing damping material, and a preparation method, a construction method and a coating thereof; the steel plate reinforced damping material comprises the following raw materials in percentage by mass: 15-25% of modified epoxy resin, 2-3% of organic bentonite, 3-5% of bisphenol A epoxy resin, 0.5-1% of vulcanizing agent, 0.1% of white carbon black, 0.5-2% of dicyandiamide, 5-15% of wollastonite, 1-3% of diluent, 20-30% of nano filler, 3-5% of carbon black, 15-26% of modified rubber and 1-5% of moisture absorbent; the modified rubber comprises liquid styrene-butadiene rubber and anion active polymerization modified liquid isoprene rubber in a mass ratio of 3-5.5: 1. The application provides a steel sheet reinforcement damping material, existing damping effect can the stiffening steel sheet again, and can promote the production efficiency and the stability of quality of this process through the spraying of robot arm.

Description

Double-layer spraying type steel plate reinforcing damping material and preparation and construction methods and coating thereof
Technical Field
The application belongs to the technical field of automobile body steel plate reinforcing materials for automobiles, and particularly relates to a double-layer spraying type steel plate reinforcing damping material, and a preparation method, a construction method and a coating thereof.
Background
At present, the reinforcing material for the steel plate of the automobile body is a rubber sheet material prepared by mixing rubber serving as a main material with raw materials such as a rubber vulcanizing agent, a vulcanization accelerator, a flame retardant, a moisture absorbent, a nano filler, heavy calcium carbonate and the like. The vehicle body reinforcing material is mainly constructed by manually pasting in China market, so that the production efficiency is low while the automation degree is low, the quality control is difficult, the damping effect is avoided, the using amount is large, and the NVH improvement of the whole vehicle is influenced to a certain extent. Therefore, the use of the spray-coating type steel plate damping reinforcing material is a problem to be solved by the prior art.
With the development of the times, energy conservation and noise reduction become important challenges for automobile manufacturing, and the improvement of the light weight and comfort of automobiles becomes an important direction for automobile development. The specific gravity of the commonly used reinforcing rubber sheet for the automobile is 1.5-1.6 g/cm3The amount of the adhesive used for a single vehicle is 10-15 sheets, and the adhesive is one of the most widely used adhesives on the body of the vehicle. Therefore, the improvement of the working efficiency of the working procedure, the reduction of the total weight of the product and the improvement of the NVH of the whole automobile are important development directions of the existing automobile body reinforcing material, and have important significance on the automation, the high efficiency and the light weight of the automobile.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a double-layer spray-type steel plate reinforced damping material, a preparation method thereof, a construction method thereof and a coating layer thereof.
In a first aspect, the application provides a double-layer spraying type steel plate reinforcing and damping material, which comprises the following raw materials in percentage by mass:
Figure BDA0002282792810000011
Figure BDA0002282792810000021
the modified rubber comprises liquid styrene-butadiene rubber and anion active polymerization modified liquid isoprene rubber in a mass ratio of 3-5.5: 1.
The traditional rubber (such as butyl rubber) used for automobile reinforcing materials has poor spraying property, and if the spraying is carried out, the gun is easily blocked, and a construction mode of manual pasting is needed; the application provides a double-deck spraying type steel sheet reinforcement damping material, the epoxy that uses high strength high tenacity and the outstanding modified rubber of damping effect are the main part, the spraying type product that the existing damping effect of preparation can the reinforcing steel sheet again, change the construction mode of reinforcing film into the spraying of robot arm by the manual work, promote the production efficiency and the stability of quality of this process, upgrade the single reinforcement function of reinforcing film for can not only reinforce the steel sheet but also can promote the difunctional product of whole car damping effect, solve traditional reinforcing film and produce the problem of negative effects to automobile body NVH. The modified liquid isoprene rubber through anion active polymerization is creatively added on the basis of the liquid styrene-butadiene rubber with better spraying property, the mass ratio of the liquid styrene-butadiene rubber to the liquid isoprene rubber is 3.5: 1-5.5: 1, and the liquid isoprene rubber through anion active polymerization can play a role of a reactive plasticizer in a traditional rubber system, so that the product toughness is improved, and the Mooney viscosity of a rubber layer is effectively reduced. More importantly, the modified liquid isoprene rubber polymerized by anion activity has better compatibility with epoxy resin, and the stability of the product is ensured.
Preferably, the double-layer spraying type steel plate reinforcing and damping material comprises a rubber layer component and an epoxy layer component; the rubber layer component comprises the following raw materials in percentage by mass, wherein the sum of the rubber layer component and the epoxy layer component is 100 percent:
Figure BDA0002282792810000022
Figure BDA0002282792810000031
the modified rubber comprises liquid styrene-butadiene rubber and anion active polymerization modified liquid isoprene rubber in a mass ratio of 3-5.5: 1;
the rubber layer comprises the following components in percentage by mass, wherein the sum of the rubber layer components and the epoxy layer components is 100 percent:
Figure BDA0002282792810000032
the total amount of carbon black in the rubber layer component and the epoxy layer component accounts for 3-5% of the total mass of the rubber layer component and the epoxy layer component.
The total amount of the nano filler in the rubber layer component and the epoxy layer component accounts for 20-30% of the sum of the mass of the rubber layer component and the epoxy layer component.
The total amount of the moisture absorbing agent in the rubber layer component and the epoxy layer component accounts for 1-5% of the total mass of the rubber layer component and the epoxy layer component.
The epoxy layer component plays a role in enhancing the rigidity of the steel plate, and the rubber layer component plays a role in damping the steel plate. Experiments prove that the rigidity of the steel plate of the car body can be improved by simply spraying the rubber layer and the epoxy layer, but the shear strength and the shock resistance of a product are greatly reduced due to poor compatibility and weak adhesion of two layers of materials, so that the application cannot be met. According to the application, through introducing the liquid isoprene rubber subjected to anion active polymerization, the modified liquid isoprene rubber subjected to anion active polymerization has better compatibility with epoxy resin, a stable double-layer structure can be formed after the two layers of products are cured, the compatibility problem of the two layers of materials is effectively solved, and the shear strength and the shock resistance of the products can meet the practical application while the spraying performance of the products is realized. The modified materials added in the two-layer structure can improve the spraying property of the product and ensure the field construction property.
Preferably, the modified epoxy resin is a small-molecule dimer acid modified bisphenol A epoxy resin. The epoxy layer adopts micromolecular dimer acid modified bisphenol A epoxy resin, so that the flexibility and the toughness of the resin after curing can be greatly improved, and the deformation of a steel plate is avoided; the rotational viscosity at 25 ℃ is close to 7000CP, and the overall viscosity of the product can be effectively reduced. The material has good spraying property and certain damping effect.
In a second aspect, the present application further provides a steel plate reinforcement damping coating, comprising a rubber coating sprayed on a steel plate and an epoxy coating sprayed on the rubber coating; the epoxy coating is formed by spraying the epoxy layer components in the double-layer spraying type steel plate reinforcing damping material; the rubber coating is formed by spraying the rubber layer components in the double-layer spraying type steel plate reinforcing and damping material.
Preferably, the area ratio of the rubber coating to the epoxy coating is 5: 4-5.
In a third aspect, the application further provides a preparation method of the double-layer spraying type steel plate reinforcing and damping material, which is summarized as that the epoxy layer and the rubber layer are respectively manufactured according to the formula of the double-layer spraying type steel plate reinforcing and damping material.
The preparation method specifically comprises the following steps:
rubber layer banburying: adding the modified rubber and the organic bentonite into an internal mixer according to the proportion of the raw materials in the rubber layer component, heating to 100-110 ℃, and stirring for 25-40 min; cooling to 95-100 ℃, adding a vulcanizing agent and a moisture absorbent, and stirring for 25-40 min; cooling to 40-60 ℃ and packaging to obtain the rubber layer component of the double-layer spraying type steel plate reinforcing damping material;
stirring the epoxy layer: according to the proportion of each raw material in the epoxy component, putting bisphenol A epoxy resin, organic bentonite, white carbon black, dicyandiamide, wollastonite, carbon black and a moisture absorbent into a planetary stirrer, and stirring for 5-10 min by a slow paddle; then adding a nano filler into the mixture, and stirring the mixture for 30 to 60min by using a slow paddle; and finally, adding the modified epoxy resin and the diluent, stirring for 5-10 min by slow paddle, and then stirring for 20-30 min by fast paddle.
Adjusting the viscosity of the epoxy layer: adding a certain amount of diluent according to the actual viscosity of the extracted sample, and adjusting the viscosity to 20-30 ten thousand CP;
vacuum of epoxy layer: after the viscosity is adjusted to 20-30 ten thousand CP, vacuumizing for 20-30 min under the vacuum pressure of-0.06 MPa to-0.09 MPa;
filtering and packaging the epoxy layer: and filtering the product, and packaging after filtering to obtain the epoxy layer component of the double-layer spraying type steel plate reinforcing damping material.
In a fourth aspect, the application further provides a construction method of the double-layer spray-coating steel plate reinforced damping material, which includes the following steps:
spraying of the rubber layer: spraying a rubber layer component on the steel plate to form a rubber coating;
spraying of the epoxy layer: spraying an epoxy layer component on the rubber coating to form an epoxy coating;
baking: baking the steel plate at 170-180 ℃ for 20min, and compounding the rubber coating and the epoxy coating to form the steel plate reinforcing damping coating.
Preferably, the step of spraying the rubber layer comprises: spraying rubber layer components on the steel plate through a robot arm to form a rubber coating; the temperature of the glue outlet is controlled to be 80-85 ℃ in the spraying process.
Preferably, the step of spraying the epoxy layer comprises: spraying an epoxy component on the rubber coating through a robot arm to form an epoxy coating; the temperature of the glue outlet is controlled to be 50-55 ℃ in the spraying process.
The application has the advantages and positive effects that: the application provides a double-deck spraying shaped steel board reinforcement damping material, use this spraying shaped steel board damping reinforcement material to replace traditional reinforcement film, the epoxy that uses high strength high tenacity and the outstanding modified rubber of damping effect are the main part, the spraying type product that the preparation has existing damping effect and can the reinforcement steel board again, change the construction method of reinforcement film into the spraying of robot arm by the manual work, promote the production efficiency and the stability of quality of this process, upgrade the single reinforcement function of reinforcement film for not only can the reinforcement steel board but also can promote the difunctional product of whole car damping effect, solve traditional reinforcement film and produce the problem of negative impact to automobile body NVH.
In addition to the technical problems addressed by the present application, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems solved by the present application, other technical features included in the technical solutions, and advantages brought by the technical features will be described in further detail below.
Drawings
FIG. 1 is a schematic structural view of a steel plate reinforcing and damping coating provided in example 1 of the present application.
In the figure: 1. a steel plate; 2. a rubber coating; 3. and (4) epoxy coating.
Detailed Description
The present application will be described in further detail with reference to examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example 1
The embodiment provides a double-layer spraying type steel plate reinforcing and damping material which comprises a rubber layer component and an epoxy layer component; the rubber layer component comprises the following raw materials in percentage by mass, wherein the sum of the rubber layer component and the epoxy layer component is 100 percent:
Figure BDA0002282792810000061
wherein, the modified liquid isoprene rubber of anion living polymerization is selected from Cololi LIR-410;
the rubber layer comprises the following components in percentage by mass, wherein the sum of the rubber layer components and the epoxy layer components is 100 percent:
Figure BDA0002282792810000062
the preparation method of the double-layer spray-coating steel plate reinforcing and damping material provided by the embodiment comprises the following steps:
rubber layer banburying: adding 2000g of liquid styrene-butadiene rubber, 500g of anion living polymerization modified liquid isoprene rubber and 31.3g of carbon black into an internal mixer, heating to 100-110 ℃, and stirring for 30 min; cooling to 95-100 ℃, adding 87g of vulcanizing agent, 250g of moisture absorbing agent and 1850g of nano filler, and stirring for 30 min; cooling to 40-60 ℃ and packaging to obtain the rubber layer component of the double-layer spraying type steel plate reinforcing damping material;
stirring the epoxy layer: 389g of bisphenol A epoxy resin, 204g of organic bentonite, 27g of white carbon black, 93g of dicyandiamide, 949g of wollastonite, 49g of carbon black and 212g of moisture absorbent are put into a planetary stirrer and stirred slowly for 5 min; then 1022g of nano filler is added, and the mixture is stirred for 40min at a slow speed; and finally adding 1934g of micromolecule dimer acid modified bisphenol A epoxy resin and 121g of diluent, slowly stirring for 5min, and then quickly stirring for 20 min.
Adjusting the viscosity of the epoxy layer: adding a certain amount of diluent according to the actual viscosity of the extracted sample, and adjusting the viscosity to 20-30 ten thousand CP;
vacuum of epoxy layer: after the viscosity is adjusted to 20-30 ten thousand CP, vacuumizing for 20-30 min under the vacuum pressure of-0.06 MPa to-0.09 MPa;
filtering and packaging the epoxy layer: and filtering the product by using a 40-mesh filter screen, and packaging after filtering to obtain the epoxy layer component of the double-layer spraying type steel plate reinforcing damping material.
The construction method of the double-layer spraying type steel plate reinforcing damping material comprises the following steps:
the robot arm is adopted for spraying on site, a single-arm double-pipeline mode or two single-arm single-pipeline modes can be selected for operation, the robot arm needs to be provided with heating equipment, the temperature of a rubber layer rubber outlet is controlled to be 80-85 ℃, the temperature of an epoxy layer rubber outlet is controlled to be 50-55 ℃, one end of a robot pipeline is respectively connected with an epoxy layer and a rubber layer product glue pump, the rubber outlet at the other end is provided with a spraying mode, the spraying mode comprises the rubber outlet temperature, the rubber outlet sequence, the rubber outlet proportion, the rubber outlet amount and the like of two layers of products, rubber layer components are firstly sprayed, and then the rubber layer components are covered on the rubber layer components to form a set of double-layer damping reinforcing materials. The epoxy layer composition can be continuously sprayed without waiting for the rubber layer to cure.
After the spraying of the double-layer spraying type steel plate reinforcing and damping material is finished, a steel plate reinforcing and damping coating is formed on the surface of the steel plate, the specific structure of the steel plate reinforcing and damping coating is shown in figure 1, the steel plate reinforcing and damping coating comprises a rubber coating 2 sprayed on the steel plate 1 and an epoxy coating 3 sprayed on the rubber coating 2, and the area ratio of the rubber coating 2 to the epoxy coating 3 is 5: 4. The rubber coating 2 is formed by spraying rubber layer components in the double-layer spraying type steel plate reinforcing damping material; the epoxy coating 3 is formed by spraying epoxy layer components in the double-layer spraying type steel plate reinforcing damping material.
Example 2
The embodiment provides a double-layer spraying type steel plate reinforcing and damping material which comprises a rubber layer component and an epoxy layer component; the rubber layer component comprises the following raw materials in percentage by mass, wherein the sum of the rubber layer component and the epoxy layer component is 100 percent:
Figure BDA0002282792810000081
23% of nano filler;
wherein, the modified liquid isoprene rubber of anion living polymerization is selected from Cololi LIR-410;
the rubber layer comprises the following components in percentage by mass, wherein the sum of the rubber layer components and the epoxy layer components is 100 percent:
Figure BDA0002282792810000082
the preparation method of the double-layer spray-coating steel plate reinforcing and damping material provided by the embodiment comprises the following steps:
rubber layer banburying: 1550g of liquid styrene-butadiene rubber, 500g of anion living polymerization modified liquid isoprene rubber and 350g of carbon black are added into an internal mixer, and the mixture is heated to 100-110 ℃ and stirred for 30 min; cooling to 95-100 ℃, adding 100g of vulcanizing agent, 200g of moisture absorbent and 2300g of nano filler, and stirring for 30 min; cooling to 40-60 ℃ and packaging to obtain the rubber layer component of the double-layer spraying type steel plate reinforcing damping material;
stirring the epoxy layer: putting 400g of bisphenol A epoxy resin, 30g of white carbon black, 170g of dicyandiamide, 500g of wollastonite, 50g of carbon black and 250g of moisture absorbent into a planetary stirrer, and slowly stirring for 5 min; then 700g of nano filler is added, and the mixture is stirred for 40min at a slow speed; and finally adding 2500g of micromolecule dimer acid modified bisphenol A epoxy resin and 200g of diluent, slowly stirring for 5min, and then quickly stirring for 20 min.
Adjusting the viscosity of the epoxy layer: adding a certain amount of diluent according to the actual viscosity of the extracted sample, and adjusting the viscosity to 20-30 ten thousand CP;
vacuum of epoxy layer: after the viscosity is adjusted to 20-30 ten thousand CP, vacuumizing for 20-30 min under the vacuum pressure of-0.06 MPa to-0.09 MPa;
filtering and packaging the epoxy layer: and filtering the product by using a 40-mesh filter screen, and packaging after filtering to obtain the epoxy layer component of the double-layer spraying type steel plate reinforcing damping material.
The construction method of the double-layer spraying type steel plate reinforcing damping material comprises the following steps:
the robot arm is adopted for spraying on site, a single-arm double-pipeline mode or two single-arm single-pipeline modes can be selected for operation, the robot arm needs to be provided with heating equipment, the temperature of a rubber layer rubber outlet is controlled to be 80-85 ℃, the temperature of an epoxy layer rubber outlet is controlled to be 50-55 ℃, one end of a robot pipeline is respectively connected with an epoxy layer and a rubber layer product glue pump, the rubber outlet at the other end is provided with a spraying mode, the spraying mode comprises the rubber outlet temperature, the rubber outlet sequence, the rubber outlet proportion, the rubber outlet amount and the like of two layers of products, rubber layer components are firstly sprayed, and then the rubber layer components are covered on the rubber layer components to form a set of double-layer damping reinforcing materials. The rubber layer component does not need to wait to be cured before the epoxy layer component is sprayed, and continuous spraying can be carried out.
After the spraying of the double-layer spraying type steel plate reinforcing and damping material is finished, a steel plate reinforcing and damping coating is formed on the surface of the steel plate, the specific structure of the steel plate reinforcing and damping coating is shown in figure 1, the steel plate reinforcing and damping coating comprises a rubber coating 2 sprayed on the steel plate 1 and an epoxy coating 3 sprayed on the rubber coating 2, and the area ratio of the rubber coating 2 to the epoxy coating 3 is 1: 1. The rubber coating 2 is formed by spraying rubber layer components in the double-layer spraying type steel plate reinforcing damping material; the epoxy coating 3 is formed by spraying epoxy layer components in the double-layer spraying type steel plate reinforcing damping material.
Example 3
The embodiment provides a double-layer spraying type steel plate reinforcing and damping material which comprises a rubber layer component and an epoxy layer component; the rubber layer component comprises the following raw materials in percentage by mass, wherein the sum of the rubber layer component and the epoxy layer component is 100 percent:
Figure BDA0002282792810000091
Figure BDA0002282792810000101
19.5% of nano filler;
wherein, the modified liquid isoprene rubber of anion living polymerization is selected from Cololi LIR-410;
the rubber layer comprises the following components in percentage by mass, wherein the sum of the rubber layer components and the epoxy layer components is 100 percent:
Figure BDA0002282792810000102
the preparation method of the double-layer spray-coating steel plate reinforcing and damping material provided by the embodiment comprises the following steps:
rubber layer banburying: adding 2000g of liquid styrene-butadiene rubber, 400g of anion living polymerization modified liquid isoprene rubber and 200g of carbon black into an internal mixer, heating to 100-110 ℃, and stirring for 30 min; cooling to 95-100 ℃, adding 100g of vulcanizing agent, 350g of moisture absorbent and 1950g of nano filler, and stirring for 30 min; cooling to 40-60 ℃ and packaging to obtain the rubber layer component of the double-layer spraying type steel plate reinforcing damping material;
stirring the epoxy layer: putting 500g of bisphenol A epoxy resin, 10g of white carbon black, 190g of dicyandiamide, 600g of wollastonite, 300g of carbon black and 150g of moisture absorbent into a planetary stirrer, and slowly stirring for 5 min; then adding 1000g of nano filler, and slowly stirring for 40 min; and finally adding 1900g of micromolecule dimer acid modified bisphenol A epoxy resin and 100g of diluent, slowly stirring for 5min, and then quickly stirring for 20 min.
Adjusting the viscosity of the epoxy layer: adding a certain amount of diluent according to the actual viscosity of the extracted sample, and adjusting the viscosity to 20-30 ten thousand CP;
vacuum of epoxy layer: after the viscosity is adjusted to 20-30 ten thousand CP, vacuumizing for 20-30 min under the vacuum pressure of-0.06 MPa to-0.09 MPa;
filtering and packaging the epoxy layer: and filtering the product by using a 40-mesh filter screen, and packaging after filtering to obtain the epoxy layer component of the double-layer spraying type steel plate reinforcing damping material.
The construction method of the double-layer spraying type steel plate reinforcing damping material comprises the following steps:
the robot arm is adopted for spraying on site, a single-arm double-pipeline mode or two single-arm single-pipeline modes can be selected for operation, the robot arm needs to be provided with heating equipment, the temperature of a rubber layer rubber outlet is controlled to be 80-85 ℃, the temperature of an epoxy layer rubber outlet is controlled to be 50-55 ℃, one end of a robot pipeline is respectively connected with an epoxy layer and a rubber layer product glue pump, the rubber outlet at the other end is provided with a spraying mode, the spraying mode comprises the rubber outlet temperature, the rubber outlet sequence, the rubber outlet proportion, the rubber outlet amount and the like of two layers of products, rubber layer components are firstly sprayed, and then the rubber layer components are covered on the rubber layer components to form a set of double-layer damping reinforcing materials. The rubber layer component does not need to wait to be cured before the epoxy layer component is sprayed, and continuous spraying can be carried out.
After the spraying of the double-layer spraying type steel plate reinforcing and damping material is finished, a steel plate reinforcing and damping coating is formed on the surface of the steel plate, the specific structure of the steel plate reinforcing and damping coating is shown in figure 1, the steel plate reinforcing and damping coating comprises a rubber coating 2 sprayed on the steel plate 1 and an epoxy coating 3 sprayed on the rubber coating 2, and the area ratio of the rubber coating 2 to the epoxy coating 3 is 5: 4. The rubber coating 2 is formed by spraying rubber layer components in the double-layer spraying type steel plate reinforcing damping material; the epoxy coating 3 is formed by spraying epoxy layer components in the double-layer spraying type steel plate reinforcing damping material.
Example 4
The embodiment provides a double-layer spraying type steel plate reinforcing and damping material which comprises a rubber layer component and an epoxy layer component; the rubber layer component comprises the following raw materials in percentage by mass, wherein the sum of the rubber layer component and the epoxy layer component is 100 percent:
Figure BDA0002282792810000111
21% of nano filler;
wherein, the modified liquid isoprene rubber of anion living polymerization is selected from Cololi LIR-410;
the rubber layer comprises the following components in percentage by mass, wherein the sum of the rubber layer components and the epoxy layer components is 100 percent:
Figure BDA0002282792810000121
the preparation method of the double-layer spray-coating steel plate reinforcing and damping material provided by the embodiment comprises the following steps:
rubber layer banburying: adding 1800g of liquid styrene-butadiene rubber, 560g of anion living polymerization modified liquid isoprene rubber and 150g of carbon black into an internal mixer, heating to 100-110 ℃, and stirring for 30 min; cooling to 95-100 ℃, adding 50g of vulcanizing agent, 340g of moisture absorbing agent and 2100g of nano filler, and stirring for 30 min; cooling to 40-60 ℃ and packaging to obtain the rubber layer component of the double-layer spraying type steel plate reinforcing damping material;
stirring the epoxy layer: putting 350g of bisphenol A epoxy resin, 20g of white carbon black, 180g of dicyandiamide, 1250g of wollastonite, 250g of carbon black and 150g of moisture absorbent into a planetary stirrer, and slowly stirring for 5 min; then adding 800g of nano filler, and slowly stirring for 40 min; and finally, 1600g of micromolecule dimer acid modified bisphenol A epoxy resin and 200g of diluent are added, the mixture is stirred at a low speed for 5min and then is stirred at a high speed for 20 min.
Adjusting the viscosity of the epoxy layer: adding a certain amount of diluent according to the actual viscosity of the extracted sample, and adjusting the viscosity to 20-30 ten thousand CP;
vacuum of epoxy layer: after the viscosity is adjusted to 20-30 ten thousand CP, vacuumizing for 20-30 min under the vacuum pressure of-0.06 MPa to-0.09 MPa;
filtering and packaging the epoxy layer: and filtering the product by using a 40-mesh filter screen, and packaging after filtering to obtain the epoxy layer component of the double-layer spraying type steel plate reinforcing damping material.
The construction method of the double-layer spraying type steel plate reinforcing damping material comprises the following steps:
the robot arm is adopted for spraying on site, a single-arm double-pipeline mode or two single-arm single-pipeline modes can be selected for operation, the robot arm needs to be provided with heating equipment, the temperature of a rubber layer rubber outlet is controlled to be 80-85 ℃, the temperature of an epoxy layer rubber outlet is controlled to be 50-55 ℃, one end of a robot pipeline is respectively connected with an epoxy layer and a rubber layer product glue pump, the rubber outlet at the other end is provided with a spraying mode, the spraying mode comprises the rubber outlet temperature, the rubber outlet sequence, the rubber outlet proportion, the rubber outlet amount and the like of two layers of products, rubber layer components are firstly sprayed, and then the rubber layer components are covered on the rubber layer components to form a set of double-layer damping reinforcing materials. The rubber layer component does not need to wait to be cured before the epoxy layer component is sprayed, and continuous spraying can be carried out.
After the spraying of the double-layer spraying type steel plate reinforcing and damping material is finished, a steel plate reinforcing and damping coating is formed on the surface of the steel plate, the specific structure of the steel plate reinforcing and damping coating is shown in figure 1, the steel plate reinforcing and damping coating comprises a rubber coating 2 sprayed on the steel plate 1 and an epoxy coating 3 sprayed on the rubber coating 2, and the area ratio of the rubber coating 2 to the epoxy coating 3 is 5: 4. The rubber coating 2 is formed by spraying rubber layer components in the double-layer spraying type steel plate reinforcing damping material; the epoxy coating 3 is formed by spraying epoxy layer components in the double-layer spraying type steel plate reinforcing damping material.
Comparative example 1
This comparative example provides a double-deck spraying type steel sheet reinforcement damping material, and the main part is the same with embodiment 1, and the same parts are no longer repeated. This comparative example differs from example 1 in that no anionically polymerized modified liquid isoprene rubber was added.
Comparative example 2
This comparative example provides a double-deck spraying type steel sheet reinforcement damping material, and the main part is the same with embodiment 1, and the same parts are no longer repeated. The difference between the comparative example and the example 1 is that the common bisphenol F epoxy resin is used for replacing the small molecule dimer acid modified bisphenol A epoxy resin in the example 1, and the rest raw materials and the mixture ratio are unchanged.
Test analysis
The performance test of the two-layer spray-coated steel plate reinforced damping material provided in examples 1 to 4 and comparative examples 1 to 2 was performed, the test method is shown in table 1, and the test results are shown in table 2.
TABLE 1 Performance test methods
Figure BDA0002282792810000131
Figure BDA0002282792810000141
Table 2 results of performance testing
Figure BDA0002282792810000142
Figure BDA0002282792810000151
It can be seen from table 2 that the double-deck spraying type steel sheet reinforcement damping material that this application provided has both the damping effect and can the stiffening steel sheet, upgrades the single reinforcement function of stiffening film for both can the stiffening steel sheet can promote the difunctional product of whole car damping effect again, solves the problem that traditional stiffening film produced negative impact to automobile body NVH. It can be seen from the comparison between example 1 and comparative example 1 that the modified liquid isoprene rubber obtained by anionic living polymerization can play a role of a "reactive plasticizer" in the traditional rubber system, thereby improving the toughness of the product and simultaneously effectively reducing the Mooney viscosity of the rubber layer. The modified liquid isoprene rubber polymerized by anion activity has better compatibility with epoxy resin, can ensure that a stable double-layer structure can be formed after two layers of products are cured, effectively solves the problem of compatibility of two layers of materials, and ensures the shear strength and the shock resistance of the products to meet practical application while realizing the spraying performance of the products. Compared with the embodiment 1 and the comparative example 2, the addition of the small-molecular dimer acid modified bisphenol A epoxy resin can greatly improve the flexibility and the toughness of the resin after curing, avoid the deformation of a steel plate and also have a certain damping effect.
The steel plate with the damping effect and the reinforcing function is prepared, and the specific gravity is lowAt 1.50g/cm3The spray-coating steel plate damping reinforcing product. The construction mode of reinforcing film is changed into the spraying of robot arm by the manual work, promotes the production efficiency and the stability of quality of this process. Compared with the traditional reinforcing rubber sheet, the proportion can be reduced by 5-10%, the construction cost is reduced by 40% (ten years according to the service life of the machine), and the reinforcing rubber sheet has very important application value for light weight and lean production of automobile bodies.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (10)

1. The double-layer spraying type steel plate reinforcing and damping material is characterized by comprising the following raw materials in percentage by mass:
Figure FDA0002282792800000011
the modified rubber comprises liquid styrene-butadiene rubber and anion active polymerization modified liquid isoprene rubber in a mass ratio of 3-5.5: 1.
2. A double-layer spraying type steel plate reinforcing damping material is characterized by comprising a rubber layer component and an epoxy layer component; the rubber layer component comprises the following raw materials in percentage by mass, based on the sum of the rubber layer component and the epoxy layer component being 100 percent:
Figure FDA0002282792800000012
the modified rubber comprises liquid styrene-butadiene rubber and anion active polymerization modified liquid isoprene rubber in a mass ratio of 3-5.5: 1;
the rubber layer comprises the following components in percentage by mass, wherein the sum of the rubber layer components and the epoxy layer components is 100 percent:
Figure FDA0002282792800000013
Figure FDA0002282792800000021
the total amount of carbon black in the rubber layer component and the epoxy layer component accounts for 3-5% of the total mass of the rubber layer component and the epoxy layer component;
the total amount of the nano filler in the rubber layer component and the epoxy layer component accounts for 20-30% of the sum of the mass of the rubber layer component and the epoxy layer component;
the total amount of the moisture absorbing agent in the rubber layer component and the epoxy layer component accounts for 1-5% of the total mass of the rubber layer component and the epoxy layer component.
3. The double-layer spray-coating steel plate reinforcing and damping material as claimed in claim 2, wherein the modified epoxy resin is a small molecule dimer acid modified bisphenol A epoxy resin.
4. A steel plate reinforcing damping coating is characterized by comprising a rubber coating sprayed on a steel plate and an epoxy coating sprayed on the rubber coating; the epoxy coating is formed by spraying the epoxy layer component in the double-layer spraying type steel plate reinforcing and damping material according to claim 2 or 3; the rubber coating is formed by spraying the rubber layer component in the double-layer spraying type steel plate reinforcing and damping material of claim 2 or 3.
5. The steel plate reinforcing and damping coating of claim 4, wherein the area ratio of the rubber coating to the epoxy coating is 5:4 to 5.
6. A preparation method of a double-layer spraying type steel plate reinforcing and damping material is characterized in that the epoxy layer and the rubber layer are respectively manufactured according to the formula of the double-layer spraying type steel plate reinforcing and damping material disclosed by claim 2 or 3.
7. The method of claim 6, comprising the steps of:
rubber layer banburying: adding the modified rubber, the nano filler and the carbon black into an internal mixer according to the proportion of the raw materials in the rubber layer components, heating to 100-110 ℃, and stirring for 25-40 min; cooling to 95-100 ℃, adding a vulcanizing agent and a moisture absorbent, and stirring for 25-40 min; cooling to 40-60 ℃ and packaging to obtain the rubber layer component of the double-layer spraying type steel plate reinforcing damping material;
stirring the epoxy layer: putting bisphenol A epoxy resin, organic bentonite, white carbon black, dicyandiamide, wollastonite, carbon black and a moisture absorbent into a planetary stirrer according to the proportion of the raw materials in the epoxy component, and stirring for 5-10 min by a slow paddle; then adding a nano filler into the mixture, and stirring the mixture for 30 to 60min by using a slow paddle; and finally, adding the modified epoxy resin and the diluent, stirring for 5-10 min by slow paddle, and then stirring for 20-30 min by fast paddle.
Adjusting the viscosity of the epoxy layer: adding a certain amount of diluent according to the actual viscosity of the extracted sample, and adjusting the viscosity to 20-30 ten thousand CP;
vacuum of epoxy layer: after the viscosity is adjusted to 20-30 ten thousand CP, vacuumizing for 20-30 min under the vacuum pressure of-0.06 MPa to-0.09 MPa;
filtering and packaging the epoxy layer: and filtering the product, and packaging after filtering to obtain the epoxy layer component of the double-layer spraying type steel plate reinforcing damping material.
8. A construction method of the double-layer spray type steel plate reinforcing and damping material according to claim 2 or 3, characterized by comprising the steps of:
spraying of the rubber layer: spraying the rubber layer component on the steel plate to form a rubber coating;
spraying of the epoxy layer: spraying the epoxy layer component onto the rubber coating to form an epoxy coating;
baking: and baking for 20min at 170-180 ℃, and compounding the rubber coating and the epoxy coating to form the steel plate reinforcing damping coating.
9. The construction method according to claim 8, wherein the rubber layer spraying step specifically comprises: spraying the rubber layer component on the steel plate through a robot arm to form a rubber coating; the temperature of the glue outlet is controlled to be 80-85 ℃ in the spraying process.
10. The construction method according to claim 8, wherein the epoxy layer spraying step specifically comprises: spraying the epoxy component on the rubber coating through a robot arm to form an epoxy coating; the temperature of the glue outlet is controlled to be 50-55 ℃ in the spraying process.
CN201911148151.0A 2019-11-21 2019-11-21 Double-layer spraying type steel plate reinforcing damping material and preparation and construction methods and coating thereof Pending CN110922814A (en)

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CN111500238A (en) * 2020-06-19 2020-08-07 昆明耐维科技有限公司 Protective adhesive for ultrasonic real-time rail breakage monitoring system and preparation method thereof
CN112322184A (en) * 2020-11-25 2021-02-05 德清品高新材料有限公司 Manufacturing method of spraying type damping material

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CN108299697A (en) * 2017-01-11 2018-07-20 中国石油化工股份有限公司 A kind of rubber and preparation method thereof and rubber composition and vulcanized rubber

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CN111500238A (en) * 2020-06-19 2020-08-07 昆明耐维科技有限公司 Protective adhesive for ultrasonic real-time rail breakage monitoring system and preparation method thereof
CN111500238B (en) * 2020-06-19 2021-10-15 昆明耐维科技有限公司 Protective adhesive for ultrasonic real-time rail breakage monitoring system and preparation method thereof
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