CN112277349A - Processing technology of foaming type reinforcing rubber sheet for automobile - Google Patents
Processing technology of foaming type reinforcing rubber sheet for automobile Download PDFInfo
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- CN112277349A CN112277349A CN202011173130.7A CN202011173130A CN112277349A CN 112277349 A CN112277349 A CN 112277349A CN 202011173130 A CN202011173130 A CN 202011173130A CN 112277349 A CN112277349 A CN 112277349A
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- foaming
- automobile
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- nitrile rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
Abstract
The invention discloses a processing technology of a foaming type reinforcing rubber sheet for an automobile, and belongs to the technical field of automobile damping plate manufacturing. The processing technology of the application is as follows: preparing a slow release agent: uniformly mixing the foaming agent and the segmented nitrile rubber soft rubber tube to prepare a slow release agent; stirring and synthesizing: sequentially putting the components and the slow-release agent of the foaming type reinforcing rubber sheet for the automobile into a heating stirrer for hot-melting stirring synthesis; extruding: transferring the semi-fluid material synthesized by hot melting into an extruder and extruding into a strip-shaped body; rolling: rolling the strip into a sheet; film covering: and (4) carrying out film-coated isolation on the semi-finished product after the sheet forming. 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 processing technology of a foaming type reinforcing rubber sheet for an automobile.
Background
With the rapid development of the automobile industry, the requirements of consumers on the comprehensive performance of automobiles are higher and higher, especially the performance and the appearance. The thickness of the steel plate of the automobile body is controlled more and more strictly, the steel plate of the automobile body becomes weaker due to stamping and stretching in the automobile body forming process, and in addition, in the long-term use process of the automobile, the weak parts such as the corners of the automobile door, a handle and the like are opened and closed frequently under the stress action of repeated pulling force, impact, vibration and the like, so that the metal plate at the weak parts can be fatigued, and cracks can be generated at the parts under the condition that the stress energy can not be dispersed and consumed. Therefore, the reinforcing films are required to be adhered to the parts of the automobile to improve the fatigue tear strength, the bending strength and the rigidity of the steel plate, and impact energy is absorbed through self deformation during collision, so that the collision resistance of the automobile body is improved, and the safety performance index of the automobile body is effectively improved. However, the existing reinforcing rubber sheets on the market have complex storage conditions and unstable performance, so that the stable foaming type reinforcing rubber sheets can be produced at the same time.
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 processing technology of 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 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; the foaming agent is added by 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, and the technical effect of uniform distribution of bubbles is achieved, and the prepared foaming type reinforcing rubber sheet for the automobile is uniform and stable in overall quality and long in service life;
s2, stirring and synthesizing: sequentially putting the components and the slow-release agent of the foaming type reinforcing rubber sheet for the automobile 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.
In the whole process, the nitrile rubber part is added in the form of a segment nitrile rubber soft rubber tube, a powdery foaming agent can be filled in the soft rubber tube, the foaming agent is gradually brought into a gradually hot-melted semi-fluid material by the rubber tube along with the proceeding of hot melting and stirring, the segment nitrile rubber soft rubber tube is gradually hot-melted in the subsequent gradual heating process, the foaming agent in the segment nitrile rubber soft rubber tube is released, and the segment nitrile rubber soft rubber tube fully participates in 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 gradually and in batches is realized.
The further processing technology is that the components of the foaming type reinforced rubber sheet for the automobile comprise a lubricant; in the step S1, the lubricant is melted and then added with the segmented nitrile rubber soft rubber tube and the foaming agent to be uniformly mixed to prepare the slow release agent. The lubricant can be used for mixing the foaming agent into the segmented nitrile rubber soft rubber hose in an adhesion manner, so that the slow release effect is more ideal, and the lubricating effect is improved.
The further processing technology is characterized in that 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 slow release effect of the nitrile rubber flexible rubber hose of the specification in the material accords with the technical purpose of the application, the length is too long, the pipe diameter is too small, the foaming agent is not easy to be added into the hose in the stirring process, and the bearing capacity is limited due to too short length.
In the further processing technology, the lubricant is stearic acid; the foaming agent is any one or any combination of toluene sulfonyl hydrazide, benzene sulfonyl hydrazide, azodicarbonamide and compound azodicarbonamide.
In the step S5, the silicon-coated release paper is used for isolation, and can be used for synergistic action with the lubricant which is remained and released in the calendering process, so that excessive adhesion can be avoided, and the technical effect of isolation can be achieved.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the processing technology of the foaming type reinforcing rubber sheet 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, the overall quality of the prepared foaming type reinforcing rubber sheet for the automobile is uniform and stable, and the service life is long;
(2) according to the processing technology of 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 also 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 processing technology of the foaming type reinforcing rubber sheet for the automobile, stearic acid can be used for mixing a foaming agent into a segmented nitrile rubber flexible rubber tube in an adhesion mode, the slow release effect is more ideal, and the silicon-coated release paper can be used for realizing the synergistic effect with a lubricant which is remained and released in the calendering process, so that excessive adhesion can be avoided, and the technical effect of isolation can be achieved;
(4) according to the processing technology of the foaming type reinforcing rubber sheet for the automobile, the stearic acid, the segment-shaped 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 reinforced rubber sheet for the automobile comprises the following components: epoxy resin, nitrile rubber, an epoxy curing agent, light calcium carbonate, carbon black, a lubricant, inorganic filler and a foaming agent; the foaming agent is selected from any one or any combination of tosyl hydrazide, benzenesulfonyl hydrazide, azodicarbonamide and compound azodicarbonamide foaming agents, and in this embodiment, the amount of tosyl hydrazide is about 2% of the total weight. The lubricant is stearic acid; the nitrile rubber part is added in the form of a segment-shaped nitrile rubber soft rubber hose, in the embodiment, the nitrile rubber can be divided into two parts, wherein each half is the segment-shaped nitrile rubber soft hose, and the rest half is added in the general raw material state of the nitrile rubber. The length of the segmental nitrile rubber flexible rubber hose is 3-15 mm, the diameter is 2-5 mm, the thickness is less than or equal to 1.5mm, the slow release effect of the nitrile rubber flexible rubber hose of the specification in the material meets the technical purpose of the application, the length is too long, the pipe diameter is too small, a foaming agent is not easily added into the hose in the stirring process, and the bearing capacity is limited if the foaming agent is too short. The length of this middle section form nitrile rubber flexible glue pipe is 15mm in this embodiment, and the diameter is 2mm, and thickness is 1.5 mm.
The specific manufacturing steps are as follows:
s1, preparation of a slow release agent: uniformly mixing the segmented nitrile rubber soft rubber tube and the toluenesulfonyl hydrazide to prepare a slow release agent, and filling at least half of the toluenesulfonyl hydrazide into the nitrile rubber soft rubber tube in the uniform stirring process;
s2, stirring and synthesizing: sequentially putting the epoxy resin, the rest half of the 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 in parts by weight 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 (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 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 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 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 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 segmented nitrile rubber soft rubber hose is 3mm, the diameter of the segmented nitrile rubber soft rubber hose is 3mm, and the thickness of the segmented nitrile rubber soft rubber hose is 1.0 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 mix the azodicarbonamide into the segmented nitrile rubber soft rubber hose in an attached manner, so that more than half of the 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; the semi-finished product after slicing is isolated in a film covering mode by using silicon-coated isolation paper, and a test sample 4 is taken.
The test samples 1 to 4 of examples 1 to 4 were examined, and the 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 sample 1 | 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 common reinforcing film, the reinforcing film is lighter, the lightweight development of an automobile is promoted, the pore diameter of bubbles of a foamed product is smaller than the micron-sized pore diameter, 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 due to the large number of nano-sized pores in the product, so that the reinforcing multiplying power is increased. Under the condition of small amount (not more than 2%) of foaming agent, the reinforcing multiplying power can also reach 6-7 times. Meanwhile, due to the existence of uniformly distributed micropore structures, the damping and shock absorption effects are better, and the existence of micropores can disperse reinforcement in epoxy curingThe stress of the rubber sheet can not deform the steel plate when the reinforcing rubber sheet is applied. 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 adhesively mix the foaming agent into the segmented nitrile rubber flexible hose, which indicates that the slow release effect is more ideal, and in the whole production process, operators also find that the material is smoothly extruded, the extrusion port has the least residual material, the roller sticking phenomenon is rarely generated in the calendering process, which indicates that the stearic acid has a certain slow release effect and improves the lubricating effect, and the silicon-coated release paper is used for isolation in the step S5, which can cooperate with the lubricant remained and released in the calendering process, so that the excessive adhesion can be avoided, and the technical effect of isolation can be achieved.
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 (5)
1. A processing technology of a foaming type reinforcing rubber sheet for an automobile is characterized by comprising the following steps: the method 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 components and the slow-release agent of the foaming type reinforcing rubber sheet for the automobile 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.
2. The process for processing the foamed reinforcing rubber sheet for the automobile according to claim 1, wherein the components of the foamed reinforcing rubber sheet for the automobile comprise a lubricant; in the step S1, the lubricant is melted and then added with the segmented nitrile rubber soft rubber tube and the foaming agent to be uniformly mixed to prepare the slow release agent.
3. The processing technology of the foamed reinforcing rubber sheet for the automobile according to claim 1, wherein the length of the segmented nitrile rubber flexible rubber tube is 3-15 mm, the diameter is 2-5 mm, and the thickness is less than or equal to 1.5 mm.
4. The process for producing an automotive foamed reinforcing sheet according to claim 2, wherein said lubricant is stearic acid; the foaming agent is any one or any combination of toluene sulfonyl hydrazide, benzene sulfonyl hydrazide, azodicarbonamide and compound azodicarbonamide.
5. The process of claim 2, wherein the step S5 is performed by using a silicone-coated release paper for release.
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| JPH09123211A (en) * | 1995-11-01 | 1997-05-13 | Hiroshima Kasei Ltd | Manufacture of composite of foamed extrusion of thermoplastic elastomer and rubber molding |
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| CN104962213A (en) * | 2015-07-23 | 2015-10-07 | 北京龙苑伟业新材料有限公司 | Low-density high-strength reinforced rubber sheet convenient for low-temperature construction and preparation method thereof |
| CN105667057A (en) * | 2016-03-31 | 2016-06-15 | 马鞍山联洪合成材料有限公司 | Production device for foaming type reinforced rubber slice and production technique thereof |
| CN106566259A (en) * | 2016-11-07 | 2017-04-19 | 山东非金属材料研究所 | Silicone rubber foaming material and preparation method thereof |
| CN110003644A (en) * | 2019-03-18 | 2019-07-12 | 军事科学院系统工程研究院军需工程技术研究所 | A kind of thermoplastic polyamide elastomer's physical chemistry joint foamed material and preparation method thereof |
| CN111423836A (en) * | 2020-04-15 | 2020-07-17 | 重庆钧业新材料科技股份有限公司 | High foaming reinforcement film |
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2020
- 2020-10-28 CN CN202011173130.7A patent/CN112277349B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09123211A (en) * | 1995-11-01 | 1997-05-13 | Hiroshima Kasei Ltd | Manufacture of composite of foamed extrusion of thermoplastic elastomer and rubber molding |
| CN103360690A (en) * | 2013-07-31 | 2013-10-23 | 饭田（佛山）橡塑有限公司 | Foamed reinforcing material |
| CN104962213A (en) * | 2015-07-23 | 2015-10-07 | 北京龙苑伟业新材料有限公司 | Low-density high-strength reinforced rubber sheet convenient for low-temperature construction and preparation method thereof |
| CN105667057A (en) * | 2016-03-31 | 2016-06-15 | 马鞍山联洪合成材料有限公司 | Production device for foaming type reinforced rubber slice and production technique thereof |
| CN106566259A (en) * | 2016-11-07 | 2017-04-19 | 山东非金属材料研究所 | Silicone rubber foaming material and preparation method thereof |
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| CN111423836A (en) * | 2020-04-15 | 2020-07-17 | 重庆钧业新材料科技股份有限公司 | High foaming reinforcement film |
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