CN112266510B - Foaming type reinforcing film for automobile - Google Patents
Foaming type reinforcing film for automobile Download PDFInfo
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- CN112266510B CN112266510B CN202011172945.3A CN202011172945A CN112266510B CN 112266510 B CN112266510 B CN 112266510B CN 202011172945 A CN202011172945 A CN 202011172945A CN 112266510 B CN112266510 B CN 112266510B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2309/02—Copolymers with acrylonitrile
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
Abstract
The invention discloses a foaming type reinforcing rubber sheet for an automobile, and belongs to the technical field of automobile damping plate manufacturing. The formula of the application comprises the following components in parts by weight: 30-35 parts of epoxy resin, 300-350 parts of nitrile rubber, 420-440 parts of epoxy curing agent, 140-160 parts of light calcium carbonate, 40-42 parts of carbon black, 5-7 parts of stearic acid, 3-5 parts of inorganic filler and 5-15 parts of foaming agent; wherein the foaming agent is added by a slow release method. According to the invention, the foaming agent is added in combination with other components through a slow release method, and the foaming agent is gradually and batchwise mixed uniformly in the material and then participates in the foaming reaction, so that the foaming process is prolonged, and the technical effect of uniform distribution of bubbles is achieved. The problem of foaming unevenness in the concrete application of the foaming type reinforcing rubber sheet for the automobile in the prior art is solved.
Description
Technical Field
The invention belongs to the technical field of manufacturing of automobile damping plates, and particularly relates to a foaming type reinforcing rubber sheet for an automobile.
Background
With the development of science and technology, the quality of automobiles is continuously improved, automobiles are developing towards high speed, light weight, energy saving and comfort, so that the requirements of automobiles on NVH performance (Noise, Vibration and Harshness) are also higher, and the development trend of automobile light weight causes the structure of automobile bodies to change, such as thinning of outer plates, hollowing of structural components and the like, which affects the NVH performance of automobiles, and the potential safety hazard thereof can cause injuries to passengers. In order to solve the problem that the thin steel plate is used as a vehicle body material to achieve the purposes of energy conservation and consumption reduction, the weight of the vehicle body is reduced, and the mechanical strength of the vehicle body is not high, a reinforcing rubber sheet can be locally used on the vehicle body steel plate to enhance the shock resistance of the vehicle body, and the safety protection is achieved to improve the bending strength of the steel plate, increase the rigidity of the steel plate and achieve the shock absorption effect.
The resin layer of the reinforcing rubber sheet in the prior art is prepared by blending materials, and the product has the defects of heavy weight, more consumables, high cost and the like. Generally, the physical and chemical properties and various indexes of the reinforced film are improved by optimizing the foaming treatment process and the material formula, and the reinforced film is light in weight under the same thickness, has the advantage of light weight, effectively improves the product performance and the use efficiency, reduces the raw material consumption, reduces the production cost and improves the resource utilization rate. However, in order to ensure the strength of the film, the amount of the foaming agent is not too much, which generally accounts for about 5%, and the technical problem of uneven foaming caused by uneven premixing is easily generated in the mixing process with the rubber material due to the small amount, so that the service life of the whole film product is influenced.
Through retrieval, the Chinese patent application publication number: CN111423836A, publication date: 2020.7.17 discloses a high-foaming reinforced film. The reinforcing rubber sheet is composed of the following substances in parts by mass: 1-10 parts of carboxyl-terminated liquid nitrile rubber; 5-50 parts of calcium carbonate; 10-40 parts of hydantoin epoxy resin; 1-5 parts of foaming agent; 5-20 parts of dibutyl phthalate; 0.1-1 parts of peroxide vulcanizing agent; 1-10 parts of curing agent. The invention aims to provide a light reinforcing rubber sheet which is applied to the reinforcing rubber sheet, and is beneficial to promoting the light weight of an automobile. And the microcellular foaming of the reinforcing rubber sheet can increase the strength of the reinforcing rubber sheet, but the technical problem of uneven foaming still exists.
Disclosure of Invention
1. Problems to be solved
The invention provides a foaming type reinforcing film for an automobile, aiming at the problem that the foaming of the foaming type reinforcing film for the automobile in the prior art is uneven in specific application. The foaming agent is added in combination with other components through a slow release method, and the foaming agent is gradually and batchwise mixed uniformly in the materials and then participates in the foaming reaction, so that the foaming process is prolonged, and the technical effect of uniform distribution of bubbles is achieved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A foaming type reinforcing rubber sheet for automobiles comprises the following components in parts by weight: 30-35 parts of epoxy resin, 300-350 parts of nitrile rubber, 420-440 parts of epoxy curing agent, 140-160 parts of light calcium carbonate, 40-42 parts of carbon black, 5-7 parts of stearic acid, 3-5 parts of inorganic filler and 5-15 parts of foaming agent; the foaming agent is added by a slow release method, and the foaming agent gradually and in batches participates in a foaming reaction after all the components are uniformly hot-melted, stirred and mixed, so that the foaming process is prolonged, and the technical effect of uniform distribution of bubbles is achieved.
Furthermore, the nitrile rubber part is added in a sectional nitrile rubber soft rubber hose form, a powdery foaming agent can be filled in the soft rubber hose, the foaming agent is gradually brought into the gradually hot-melted semi-fluid material by the rubber hose along with the proceeding of hot melting and stirring, the sectional nitrile rubber soft hose is gradually hot-melted in the subsequent gradual temperature rise heating process, the foaming agent in the sectional nitrile rubber soft hose is released, and the sectional nitrile rubber soft hose fully participates in the foaming reaction in the subsequent continuous stirring process, so that the aim that the foaming agent fully participates in the foaming reaction in the process of uniformly mixing the materials through hot melting and stirring in batches gradually is fulfilled.
Furthermore, the length of the section-shaped nitrile rubber flexible rubber hose is 3-15 mm, the diameter of the section-shaped nitrile rubber flexible rubber hose is 2-5 mm, the thickness of the section-shaped nitrile rubber flexible rubber hose is less than or equal to 1.5mm, and the slow release effect of the section-shaped nitrile rubber flexible rubber hose in materials meets the technical purpose of the application.
A processing technology of a foaming type reinforcing rubber sheet for an automobile comprises the following steps:
s1, preparation of a slow release agent: uniformly mixing the foaming agent and the segmented nitrile rubber soft rubber tube to prepare a slow release agent;
s2, stirring and synthesizing: sequentially putting the epoxy resin, the residual nitrile rubber, the epoxy curing agent, the light calcium carbonate, the carbon black, the stearic acid, the inorganic filler and the slow-release agent in parts by weight into a heating stirrer for hot-melting stirring synthesis;
s3, extrusion: transferring the semi-fluid material synthesized by hot melting into an extruder and extruding into a strip-shaped body;
s4, rolling: rolling the strip into a sheet;
s5, coating: and (4) carrying out film-coated isolation on the semi-finished product after the sheet forming.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the foaming type reinforcing film for the automobile, the foaming agent is added through a slow release method, and the foaming agent gradually and batchwise participates in a foaming reaction after all components are uniformly hot-melted, stirred and mixed, so that the foaming process is prolonged, the technical effect of uniform distribution of bubbles is achieved, and the prepared foaming type reinforcing film for the automobile is uniform and stable in overall quality and long in service life;
(2) according to the foaming type reinforcing rubber sheet for the automobile, the nitrile rubber part is added in a sectional nitrile rubber soft rubber pipe form, the powdery foaming agent can be filled in the soft rubber pipe, the foaming agent is gradually brought into a gradually hot-melted semi-fluid material by the rubber pipe along with the proceeding of hot melting and stirring, the sectional nitrile rubber soft rubber pipe is gradually hot-melted in the subsequent gradual heating process, the foaming agent in the sectional nitrile rubber soft rubber pipe is released, and the foaming agent fully participates in the foaming reaction in the subsequent continuous stirring process, so that the purpose that the foaming agent fully participates in the foaming reaction in the process of uniformly mixing the materials through hot melting and stirring in batches gradually is achieved;
(3) according to the foaming type reinforcing rubber sheet for the automobile, stearic acid can be used for mixing the foaming agent into the segmented nitrile rubber flexible rubber tube in an adhesion manner, the slow release effect is more ideal, and the lubricating effect is improved;
(4) according to the foaming type reinforcing rubber sheet for the automobile, the stearic acid, the segmented nitrile rubber soft rubber tube and the foaming agent are uniformly mixed, and then other components are added, so that the slow release effect of the foaming agent is further improved.
Detailed Description
The invention is further described with reference to specific examples.
Example 1
The formula of the foamed reinforcing rubber sheet for the automobile comprises the following components in parts by weight: 30-35 parts of epoxy resin, 300-350 parts of nitrile rubber, 420-440 parts of epoxy curing agent, 140-160 parts of light calcium carbonate, 40-42 parts of carbon black, 5-7 parts of stearic acid, 3-5 parts of inorganic filler and 5-15 parts of foaming agent; in this embodiment, the epoxy resin 30, the nitrile rubber 300, the epoxy curing agent 420, the precipitated calcium carbonate 140, the carbon black 40, the stearic acid 5, the inorganic filler 3, and the foaming agent 5 are selected from any one of tosylhydrazide, benzenesulfonylhydrazide, azodicarbonamide, and built azodicarbonamide foaming agents. The nitrile rubber part is added in the form of a segmented nitrile rubber soft rubber hose, in the embodiment, 300 parts of nitrile rubber are divided into two parts, each 150 parts is the segmented nitrile rubber soft hose 150 parts, and the rest 150 parts are added in the normal raw material state of the nitrile rubber. The length of section form nitrile rubber flexible glue pipe is 3~15mm, and the diameter is 2~5mm, and thickness ≦ 1.5mm, and the length of section form nitrile rubber flexible glue pipe is 15mm in this embodiment, and the diameter is 2mm, and thickness 1.5 mm.
The specific manufacturing steps are as follows:
s1, preparation of a slow release agent: uniformly mixing 150 parts of segmented nitrile rubber soft rubber tube, 5 parts of tosylhydrazide and the mixture to prepare a slow release agent, and filling at least half of the tosylhydrazide into the nitrile rubber soft rubber tube;
s2, stirring and synthesizing: sequentially putting the epoxy resin, the rest 150 parts of nitrile rubber, the epoxy curing agent, the light calcium carbonate, the carbon black, the stearic acid, the inorganic filler and the slow release agent prepared in the step S1 into a heating stirrer for hot melting and stirring synthesis, wherein the stirring time is 40-60 min, the oil outlet temperature of the stirrer is 225 +/-25 ℃, the oil return temperature is 210 +/-20 ℃, and the discharging temperature is ensured to be more than or equal to 110 ℃;
s3, extrusion: transferring the semi-fluid material synthesized by hot melting into an extruder and extruding into a strip-shaped body;
s4, rolling: rolling the strip into a sheet;
s5, coating a film; and (3) carrying out film-coated isolation on the semi-finished product after slicing, and taking a test sample 1.
Example 2
The formula of the foamed reinforcing rubber sheet for the automobile comprises the following components in parts by weight: the foaming agent comprises 35 parts of epoxy resin, 350 parts of nitrile rubber, 440 parts of epoxy curing agent, 160 parts of light calcium carbonate, 42 parts of carbon black, 5 parts of stearic acid, 5 parts of inorganic filler and 15 parts of foaming agent, wherein the foaming agent is benzene sulfonyl hydrazide. The nitrile rubber part is added in the form of a segment-shaped nitrile rubber soft rubber hose, in the embodiment, 300 parts of nitrile rubber are divided into two parts, namely 200 parts of the segment-shaped nitrile rubber soft hose, and the rest 150 parts of nitrile rubber are added in the general raw material state of nitrile rubber. The length of the section-shaped nitrile rubber soft rubber hose is 10mm, the diameter is 3mm, and the thickness is 1.0 mm.
The specific manufacturing steps are as follows:
s1, preparation of a slow release agent: uniformly mixing 200 parts of segmented nitrile rubber soft rubber tube, 15 parts of tosylhydrazide and the mixture to prepare a slow release agent, and filling at least half of the tosylhydrazide into the nitrile rubber soft rubber tube;
s2, stirring and synthesizing: sequentially putting the epoxy resin, the remaining 150 parts of nitrile rubber, the epoxy curing agent, the light calcium carbonate, the carbon black, the stearic acid, the inorganic filler and the slow-release agent prepared in the step S1 into a heating stirrer for hot-melting stirring synthesis, wherein the stirring time is 40-60 min, the oil outlet temperature of the stirrer is 225 +/-25 ℃, the oil return temperature is 210 +/-20 ℃, and the discharging temperature is not less than 110 ℃;
s3, extrusion: transferring the semi-fluid material synthesized by hot melting into an extruder and extruding into a strip-shaped body;
s4, rolling: rolling the strip into a sheet;
s5, coating a film; and (3) carrying out film-coated isolation on the semi-finished product after slicing, and taking a test sample 2.
Example 3
The formula of the foamed reinforcing rubber sheet for the automobile comprises the following components in parts by weight: epoxy resin 33, nitrile rubber 330, epoxy curing agent 432, light calcium carbonate 150, carbon black 41, stearic acid 6, inorganic filler 4 and foaming agent 10, wherein the foaming agent is azodicarbonamide. 330 parts of nitrile rubber are divided into two parts, namely 200 parts of segmented nitrile rubber soft rubber hose, and the rest 130 parts of nitrile rubber are added in a common raw material state. The length of the segmented nitrile rubber soft rubber hose is 6mm, the diameter is 2mm, and the thickness is 1.0 mm.
The specific manufacturing steps are as follows:
s1, preparation of a slow release agent: uniformly mixing 200 parts of segmented nitrile rubber soft rubber hose, 10 parts of azodicarbonamide to prepare a slow release agent, and filling at least half of azodicarbonamide into the nitrile rubber soft rubber hose;
s2, stirring and synthesizing: sequentially putting the epoxy resin, the rest 130 parts of nitrile rubber, the epoxy curing agent, the light calcium carbonate, the carbon black, the stearic acid, the inorganic filler and the slow release agent prepared in the step S1 into a heating stirrer for hot melting and stirring synthesis, wherein the stirring time is 40-60 min, the oil outlet temperature of the stirrer is 225 +/-25 ℃, the oil return temperature is 210 +/-20 ℃, and the discharging temperature is ensured to be more than or equal to 110 ℃;
s3, extrusion: transferring the semi-fluid material after hot melting synthesis into an extruder to extrude the semi-fluid material into a strip-shaped body;
s4, rolling: rolling the strip into a sheet;
s5, coating a film; and (3) carrying out film-coated isolation on the semi-finished product after slicing, and taking a test sample 3.
In the foamed reinforcing rubber sheet for automobiles and the manufacturing process thereof of embodiments 1 to 3, at least half of the nitrile rubber is added in the form of a segmented nitrile rubber soft rubber hose, the powdery foaming agent can be filled in the soft rubber hose, the foaming agent is gradually brought into a gradually hot-melted semi-fluid material by the rubber hose along with the proceeding of hot-melting stirring, the segmented nitrile rubber soft rubber hose is gradually hot-melted in the subsequent gradual heating process, the foaming agent therein is released, and the foaming agent fully participates in the foaming reaction in the subsequent continuous stirring process, so that the purpose that the foaming agent fully participates in the foaming reaction in the process of uniformly mixing the materials by hot-melting stirring gradually and in batches is realized.
Example 4
The formula of the foamed reinforcing rubber sheet for the automobile comprises the following components in parts by weight: epoxy resin 33, nitrile rubber 330, epoxy curing agent 432, light calcium carbonate 150, carbon black 41, stearic acid 6, inorganic filler 4 and foaming agent 10, wherein the foaming agent is azodicarbonamide. 330 parts of nitrile rubber are divided into two parts, namely 100 parts of segmented nitrile rubber soft rubber hose, and the rest 230 parts of nitrile rubber are added in the normal raw material state of nitrile rubber. The length of the section-shaped nitrile rubber soft rubber hose is 3mm, the diameter of the section-shaped nitrile rubber soft rubber hose is 3mm, and the thickness of the section-shaped nitrile rubber soft rubber hose is 0.5 mm.
The specific manufacturing steps are as follows:
s1, preparation of a slow release agent: firstly, 6 parts by weight of stearic acid is melted, then 100 parts of segmented nitrile rubber soft rubber hose and 10 parts of azodicarbonamide are added and uniformly mixed to prepare a slow release agent, and the stearic acid can be used for adhesively mixing the azodicarbonamide into the segmented nitrile rubber soft rubber hose, so that more than half of azodicarbonamide can be filled into the nitrile rubber soft rubber hose;
s2, stirring and synthesizing: sequentially putting the other parts by weight of epoxy resin, the rest 230 parts of nitrile rubber, an epoxy curing agent, light calcium carbonate, carbon black, stearic acid, an inorganic filler and the slow release agent prepared in the step S1 in the formula into a heating stirrer for hot-melting stirring synthesis, wherein the stirring time is 40-60 min, the oil outlet temperature of the stirrer is 225 +/-25 ℃, the oil return temperature is 210 +/-20 ℃, and the discharging temperature is ensured to be more than or equal to 110 ℃;
s3, extrusion: transferring the semi-fluid material synthesized by hot melting into an extruder and extruding into a strip-shaped body;
s4, rolling: rolling the strip into a sheet;
s5, coating a film; and (4) carrying out film-coated isolation on the semi-finished product after slicing, and taking a test sample 4.
The test samples 1 to 4 of examples 1 to 4 were tested, and the test results are shown in Table 1:
TABLE 1 detection table for foaming type reinforced film for automobile
| Test specimen | Thickness of | Maximum reinforcement ratio | Initial adhesion | Viscosity retention property | Section micropore |
| Test specimen1 | 1.1mm | 6.0 | 6.5N | 155s | 100nm +/-and uniformly distributed |
| Test sample 2 | 1.1mm | 6.6 | 6.8N | 145s | 100nm +/-and uniformly distributed |
| Test sample 3 | 1.1mm | 6.5 | 6.7N | 150s | 100nm +/-and uniformly distributed |
| Test sample 4 | 1.1mm | 6.8 | 7.5N | 175s | 80nm +/-and uniformly distributed |
Examples 1 to 4 products having a density of 1.4g/cm3Compared with the existing general reinforcing film, the automobile reinforcing film is lighter, the lightweight development of an automobile can be promoted, the pore diameter of bubbles of a foamed product is smaller than that of a micron, the mechanical strength of the foamed product is far higher than that of a non-foamed product, and the mechanical strength of the product is also improved and the reinforcing multiplying power is increased due to the fact that a large number of nano-scale air holes exist in the product. The amount of the foaming agent is small (not more than 2)%) was also used, the reinforcement ratio was 6 to 7 times. Simultaneously because the existence of evenly distributed's microporous structure, damping shock attenuation effect is more excellent to and the stress of reinforcement film when the micropore exists can disperse the epoxy solidification, when the reinforcement film is used, can not make the steel sheet produce the deformation. As can be seen from the data in Table 1, the film prepared by the test sample 4 has the best effect, which indicates that the slow release process of the foaming agent can affect various technical parameters of the film, while the stearic acid in the example 4 can be used for adhesively mixing the foaming agent into the segmented nitrile rubber flexible hose, which indicates that the slow release effect is more ideal.
The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.
Claims (1)
1. The foaming type reinforcing rubber sheet for the automobile is characterized by comprising the following components in parts by weight: 30-35 parts of epoxy resin, 300-350 parts of nitrile rubber, 420-440 parts of epoxy curing agent, 140-160 parts of light calcium carbonate, 40-42 parts of carbon black, 5-7 parts of stearic acid, 3-5 parts of inorganic filler and 5-15 parts of foaming agent; the foaming agent is any one of tosyl hydrazide, benzenesulfonyl hydrazide, azodicarbonamide and compound azodicarbonamide foaming agents; wherein the foaming agent is added by a slow release method;
the nitrile rubber part is added in a form of a segmented nitrile rubber soft rubber pipe;
the length of the section-shaped nitrile rubber flexible rubber hose is 3-15 mm, the diameter of the section-shaped nitrile rubber flexible rubber hose is 2-5 mm, and the thickness of the section-shaped nitrile rubber flexible rubber hose is less than or equal to 1.5 mm;
the manufacturing steps are as follows:
s1, preparation of a slow release agent: uniformly mixing the foaming agent and the segmented nitrile rubber soft rubber tube to prepare a slow release agent;
s2, stirring and synthesizing: sequentially putting the epoxy resin, the residual nitrile rubber, the epoxy curing agent, the light calcium carbonate, the carbon black, the stearic acid, the inorganic filler and the slow-release agent in parts by weight into a heating stirrer for hot-melting stirring synthesis;
s3, extrusion: transferring the semi-fluid material synthesized by hot melting into an extruder and extruding into a strip-shaped body;
s4, rolling: rolling the strip into a sheet;
s5, coating: and (4) carrying out film-coated isolation on the semi-finished product after the sheet forming.
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| CN113354880A (en) * | 2021-06-21 | 2021-09-07 | 海程新材料(芜湖)有限公司 | Vehicle foaming high-damping vibration isolation adhesive and preparation method thereof |
| CN113321900A (en) * | 2021-06-23 | 2021-08-31 | 天津辰弘新材料科技有限公司 | Physical foaming high-strength reinforcing rubber sheet for vehicle and preparation method thereof |
| CN117327374B (en) * | 2023-12-01 | 2024-02-20 | 饭田（佛山）橡塑有限公司 | Reinforcing film for automobile and preparation method thereof |
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| KR20010011778A (en) * | 1999-07-30 | 2001-02-15 | 정몽규 | Expandable reinforcement pad for automative panel |
| CN103087663A (en) * | 2011-10-31 | 2013-05-08 | 比亚迪股份有限公司 | Reinforcing film matrix composition and its preparation method, reinforcing film and steel plate composite material |
| CN103360690A (en) * | 2013-07-31 | 2013-10-23 | 饭田（佛山）橡塑有限公司 | Foamed reinforcing material |
| CN108130019A (en) * | 2018-01-19 | 2018-06-08 | 重庆中田化工有限公司 | A kind of automotive sheet reinforced rubber sheet and preparation method thereof |
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2020
- 2020-10-28 CN CN202011172945.3A patent/CN112266510B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010011778A (en) * | 1999-07-30 | 2001-02-15 | 정몽규 | Expandable reinforcement pad for automative panel |
| CN103087663A (en) * | 2011-10-31 | 2013-05-08 | 比亚迪股份有限公司 | Reinforcing film matrix composition and its preparation method, reinforcing film and steel plate composite material |
| CN103360690A (en) * | 2013-07-31 | 2013-10-23 | 饭田（佛山）橡塑有限公司 | Foamed reinforcing material |
| CN108130019A (en) * | 2018-01-19 | 2018-06-08 | 重庆中田化工有限公司 | A kind of automotive sheet reinforced rubber sheet and preparation method thereof |
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Denomination of invention: A type of foam reinforced film for automobiles Effective date of registration: 20230627 Granted publication date: 20220506 Pledgee: China Postal Savings Bank Co.,Ltd. Ma'anshan Branch Pledgor: MAANSHAN LIANHONG SYNTHETIC MATERIALS CO.,LTD. Registration number: Y2023980045993 |