CN115197502A - Micro-hair-hole glass wool groove sizing material and preparation thereof, and vehicle sealing strip and preparation thereof - Google Patents
Micro-hair-hole glass wool groove sizing material and preparation thereof, and vehicle sealing strip and preparation thereof Download PDFInfo
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- CN115197502A CN115197502A CN202211116972.8A CN202211116972A CN115197502A CN 115197502 A CN115197502 A CN 115197502A CN 202211116972 A CN202211116972 A CN 202211116972A CN 115197502 A CN115197502 A CN 115197502A
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- 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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- 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
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- C08J9/0066—Use of inorganic compounding ingredients
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- 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
- C08J9/06—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 by a chemical blowing agent
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J2203/18—Binary blends of expanding agents
- C08J2203/184—Binary blends of expanding agents of chemical foaming agent and physical blowing agent, e.g. azodicarbonamide and fluorocarbon
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- 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
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- C08J2205/04—Foams characterised by their properties characterised by the foam pores
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention provides a micro-hair hole glass groove rubber material and preparation thereof, and a vehicle sealing strip and preparation thereof, wherein the micro-hair hole glass groove rubber material comprises the following raw materials: ethylene propylene diene monomer K3470C, ethylene propylene diene monomer K2450, active zinc oxide, stearic acid, a dispersing agent, polyethylene glycol PEG-4000, paraffin oil 25110, a fluorine-containing auxiliary agent TP200, carbon black BC1029, carbon black N774, sulfur S-80, a moisture absorbent GR, an accelerator and a foaming agent, wherein the foaming agent is formed by compounding a chemical foaming agent EM80NA-P and a physical foaming agent expansion microsphere DU 1420P. The micro-porous glass trough sizing material disclosed by the invention can improve the rigidity of the sizing material and reduce the density of the sizing material, and is favorable for realizing light weight of a product, so that the application value of the sizing material is improved.
Description
Technical Field
The invention relates to the technical field of sealing strip preparation, in particular to a micro-hair-hole glass wool groove rubber material, a preparation method of the rubber material, a vehicle sealing strip adopting the rubber material and a preparation method of the vehicle sealing strip.
Background
The automobile glass groove sealing strip mainly plays roles of guiding, sealing, dust prevention, water prevention, decoration and the like, and is a key component for ensuring accurate positioning of a vehicle door and glass and guiding the lifting of the glass. The glass groove sealing strip is installed in the automobile door guide rail, and under the closing state of an automobile door, the glass groove sealing strip plays a sealing role through matching with glass, and can prevent external wind, rain, dust and the like from invading into the automobile. Moreover, the vibration of the glass can be reduced during the running process of the automobile, and meanwhile, the cleanness, the comfort and the delicate perception in the automobile are also greatly influenced.
Current glass groove sealing strip adopts closely knit ebonite to make in the sealing strip and column mouting's part main part for guaranteeing the loading effect usually, however, the closely knit ebonite part of this position, its density value is great for whole sealing strip weight is big, is unfavorable for the lightweight. In order to improve the hardness of the sealing strip product, the sealing strip product is reinforced by adopting a mode of increasing carbon black, but the mooney viscosity is increased while the hardness is improved, so that the flowability is poor, and the plasticity is difficult to realize. Therefore, there is a need for a rubber compound formula which has high hardness, does not affect the Mooney viscosity of the rubber compound, and can realize light weight.
Disclosure of Invention
In view of this, the invention aims to provide a micro-pore glass wool groove sizing material, so that the hardness of the sizing material is improved, the density of the sizing material can be reduced, and lightweight design is facilitated.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the micro-hair-hole glass wool groove sizing material is prepared from the following raw materials in parts by weight: ethylene propylene diene monomer K3470C: 50-70 parts; ethylene propylene diene monomer K2450: 30-50 parts; active zinc oxide: 5-7 parts; stearic acid: 1-2 parts; dispersing agent: 1-3 parts; polyethylene glycol PEG-4000: 1-2 parts; paraffin oil 25110: 55-65 parts; fluorine-containing additive TP200: 5-15 parts; carbon black BC1029: 120-140 parts; carbon black N774: 50-70 parts; sulfur S-80:0.7 to 1.7 portions; moisture absorbent GR: 5-9 parts of a solvent; accelerator (b): 4-8.5 parts; foaming agent: 6.5 to 8.5 portions of; the foaming agent is compounded by a chemical foaming agent EM80NA-P and a physical foaming agent expanded microsphere DU 1420P.
Further, the weight part of the chemical foaming agent EM80NA-P is 1.5-2.5 parts; the weight portion of the physical foaming agent expanded microsphere DU1420P is 3.75-6.25.
Further, the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P are compounded according to the mass ratio of 2.
Further, S-70G is adopted as the active zinc oxide, SA-1801 is adopted as the stearic acid, and L-24 is adopted as the dispersant.
Further, the accelerator comprises the following components in parts by weight: accelerator M-75:0.5 to 1.5 portions; accelerator DM-75:0.4 to 1.0 portion; accelerator ZBEC-70:0.6 to 1.0 portion; accelerator TP-50:1.0 to 2.0 portions; accelerator ZAT-70:0.5 to 1.0 portion; promoter CLD-80:1.0 to 2.0 portions.
Compared with the prior art, the invention has the following advantages:
according to the micro-porous glass trough rubber material, a raw rubber system with high ethylene content and low Mooney is used, so that the filling rate of the material can be improved, the physical properties of the material can be ensured, the hardness of a matrix can be improved due to the high ethylene content, and the processability of a rubber compound can be ensured due to the low Mooney. And the foaming technology of using the chemical foaming agent EM80NA-P and the physical foaming agent expanded microsphere DU1420P together can reduce the density of non-functional parts and reduce the weight of products, and meanwhile, the rigidity of the foamed material can be improved through the formula design, the clamping performance of the products can be improved, and the lightweight design can also be realized.
Meanwhile, the fluorine-containing additive TP200 used in the formula does not affect the Mooney viscosity of the rubber material basically, is beneficial to improving the hardness of the rubber material and the rigidity of the foamed material, and can improve the surface lubricity and wear resistance of the product and solve the problem of difficulty in loading. In addition, the combination of the low-Mooney high-ethylene raw rubber K3470C and the fluorine-containing additive TP200 can improve the hardness of rubber and reduce the Mooney viscosity, so that the application value of the rubber can be improved, and a new solution is provided for lightweight design.
The invention also provides a preparation method of the micro-pore glass wool groove sizing material, which comprises the following steps:
s1, preparing a foaming agent master batch sheet:
s11, weighing part of ethylene propylene diene monomer K3470C, ethylene propylene diene monomer K2450, paraffin oil 25110, fluorine-containing auxiliary agent TP200, carbon black BC1029, carbon black N774, active zinc oxide, stearic acid, a dispersing agent and polyethylene glycol PEG-4000, and mixing to obtain a section A glue;
s12, mixing a chemical foaming agent EM80NA-P and physical foaming agent expanded microspheres DU1420P to obtain a mixed foaming agent, adding a certain amount of the mixed foaming agent into the section A glue obtained in the step s11 according to the weight ratio of the section A glue to the mixed foaming agent of 10, then putting the mixed foaming agent into an internal mixer for mixing for 2-3min, then discharging the glue to an open mill for thin passing and smashing, and then discharging and cooling to obtain a foaming agent master batch;
s2, preparing a micro-pore glass wool groove sizing material:
weighing the rest ethylene propylene diene monomer K3470C, the rest ethylene propylene diene monomer K2450, active zinc oxide, stearic acid, a dispersing agent and polyethylene glycol PEG-4000, and adding the materials into an internal mixer for banburying for 1.0-1.1min at the rotating speed of 40rpm; then adding the rest paraffin oil 25110, fluorine-containing additive TP200, carbon black BC1029 and carbon black N774, banburying for 3-4min, exhausting at 120 ℃, and discharging rubber at 150 ℃; and secondly, smashing and refining in an open mill to reduce the temperature to be below 90 ℃, adding sulfur S-80, a moisture absorbent GR, an accelerator, the residual mixed foaming agent in the step S12 and the prepared foaming agent masterbatch, conveying to the smashing and refining machine to smash and refine for 2-3min after the feeding is finished, filtering in a rubber filter, discharging strips through a metal strip of the rubber filter, and finally cooling through a cooling line to obtain the micro-porous glass wool groove rubber material.
Further, in the step s1, compounding the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P according to a mass ratio of 2; in the step s2, the smashing and mixing machine adopts an automatic smashing and mixing machine, and the rubber filter adopts a gear pump rubber filter.
According to the preparation method of the micro-porous glass wool groove rubber material, the foaming agent master rubber sheet pre-mixing technology is adopted, and the chemical foaming agent EM80NA-P and the physical foaming agent expansion microspheres DU1420P are mixed with the A-section rubber in advance, so that the problem of uneven dispersion of the foaming agent can be solved, and the production efficiency of the rubber material can be improved.
It is a further object of the present invention to provide a vehicle weatherstrip, which includes a first body and a second body connected together, and a lip structure provided on the first body and/or the second body; the first main body is made of the micro-hair-hole glass groove sizing material, and a clamping groove is formed at one end of the first main body; the second main part is connected at one end of the first main part, which is far away from the clamping groove, an installation groove is formed in the second main part, and a framework is embedded in the second main part and provided with a ring in the installation groove.
In addition, the invention also provides a preparation method of the vehicle sealing strip, which comprises the steps of extruding a semi-finished product of the sealing strip by an extruder, carrying out microwave vulcanization and hot air vulcanization treatment, and carrying out surface spraying treatment, cooling, curing and cutting to obtain the vehicle sealing strip; wherein, the microwave vulcanization adopts two sections of microwave vulcanization furnaces, the microwave power is respectively 7.0 plus or minus 0.5KW/3.0 plus or minus 0.5KW, the vulcanization temperature is respectively 260 plus or minus 10 ℃/250 plus or minus 10 ℃, the hot air vulcanization adopts three sections of hot air vulcanization furnaces, and the vulcanization temperature is respectively 250 plus or minus 10 ℃/240 plus or minus 10 ℃.
Further, the curing is carried out on the spray paint sprayed on the semi-finished sealing strip by adopting a three-section hot air curing furnace, and the cooling is carried out by adopting a cooling water tank and air cooling.
By adopting the micro-hair-hole glass groove rubber material, the mechanical property of the sealing strip product can be improved, the density of the sealing strip can be reduced, and the lightweight design of the sealing strip product can be realized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a weather strip according to an embodiment of the present invention;
description of reference numerals:
1. a first body; 2. a second body; 3. a framework; 4. a lip structure; 10. a clamping groove; 20. and (4) mounting the groove.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inside", "outside", etc. appear, they are based on the orientation or positional relationship shown in the drawings and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.
In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The embodiment firstly relates to a micro-pore glass wool groove sizing material and a preparation method thereof.
The micro-pore glass wool groove sizing material comprises the following raw materials in parts by weight: ethylene propylene diene monomer K3470C: 50-70 parts; ethylene propylene diene monomer K2450: 30-50 parts; active zinc oxide: 5-7 parts; stearic acid: 1-2 parts; dispersing agent: 1-3 parts; polyethylene glycol PEG-4000: 1-2 parts; paraffin oil 25110: 55-65 parts; fluorine-containing additive TP200: 5-15 parts; carbon black BC1029: 120-140 parts; carbon black N774: 50-70 parts; sulfur S-80:0.7 to 1.7 portions; moisture absorbent GR: 5-9 parts of a solvent; accelerator (b): 4-8.5 parts; foaming agent: 6.5 to 8.5 portions of; the foaming agent is compounded by a chemical foaming agent EM80NA-P and physical foaming agent expanded microspheres DU 1420P.
In a preferred embodiment, the chemical blowing agent EM80NA — P is 1.5 to 2.5 parts by weight, and the physical blowing agent expanded microspheres DU1420P is 3.75 to 6.25 parts by weight. And in specific implementation, the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P are preferably compounded according to the mass ratio of 2.
It should be noted here that the above compounding specifically means that the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P are added into the rubber of section a in proportion, and are mixed by an internal mixer, so as to realize compounding of the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P, thereby enabling the two foaming agents to be more uniformly pre-dispersed in the rubber of section a.
Further, also as a preferred embodiment, the above-mentioned accelerator includes: accelerator M-75:0.5 to 1.5 portions; accelerator DM-75:0.4 to 1.0 portion; accelerator ZBEC-70:0.6 to 1.0 portion; accelerator TP-50:1.0 to 2.0 portions; accelerator ZAT-70:0.5 to 1.0 portion; promoter CLD-80:1.0 to 2.0 portions.
In this embodiment, S-70G is preferably used as the active zinc oxide, SA-1801 is preferably used as the stearic acid, and L-24 is preferably used as the dispersant.
The rubber material of the embodiment adopts a raw rubber system with high ethylene content and low Mooney, so that the filling rate of the material can be improved, the physical properties of the material can be ensured, the hardness of the matrix can be improved due to the high ethylene content, and the processability of the rubber compound can be ensured due to the low Mooney. And the foaming technology of using the chemical foaming agent EM80NA-P and the physical foaming agent expanded microsphere DU1420P together can reduce the density of non-functional parts and reduce the weight of products, and meanwhile, the rigidity of the foamed material can be improved through the formula design, the clamping performance of the products can be improved, and the lightweight design can also be realized.
In the embodiment, high-structure-degree low-reinforcement carbon black N774 and medium-reinforcement high-purity carbon black BC1029 of fast extrusion carbon black are adopted, the high-structure-degree low-reinforcement carbon black N774 and the medium-reinforcement high-purity carbon black BC1029 of fast extrusion carbon black are used together, so that the high-structure-degree low-reinforcement carbon black can ensure that a product has good elasticity, the BC1029 carbon black with fine particles is favorable for improving the hardness, and can absorb microwaves to ensure the pore-forming quality, thereby reducing the density of the product.
In the embodiment, the high-viscosity high-flash-point paraffin oil 25110 is used as a plasticizer, the mixing processability of rubber materials can be improved, and the flash point of the high-viscosity high-flash-point paraffin oil 25110 can reach more than 280 ℃, so that the precipitation and the generation of low molecular substances in the vulcanization process can be avoided, and the generation of oil smoke and harmful substances in the production process can be greatly reduced.
In addition, the foaming agent is prepared by premixing two foaming agents, namely the chemical foaming agent EM80NA-P and the physical foaming agent expanded microsphere DU1420P, so that the problem of nonuniform dispersion of the foaming agent can be solved. In the specific preparation process, the two foaming agents are premixed with the A-section glue in advance to form a foaming agent masterbatch sheet, and the foaming agent masterbatch sheet pre-accelerator and the sulfur S-80 are mixed together in the vulcanization process, so that the dispersion is more uniform, the foaming is more uniform in the product extrusion process, and the section stability of the product is improved.
Meanwhile, a nitrosamine-free environment-friendly vulcanization system is adopted in the embodiment, secondary amine is not generated in the vulcanization process, and the product is more environment-friendly and healthier.
Meanwhile, the fluorine-containing additive TP200 used in the formula is beneficial to improving the hardness of the sizing material and the rigidity of the foamed material, and can also improve the surface lubricity and wear resistance of the product and solve the problem of difficulty in loading. In addition, the combination of the low-Mooney high-ethylene raw rubber K3470C and the fluorine-containing additive TP200 can improve the hardness of the rubber and reduce the density of the rubber, so that the application value of the rubber can be improved, and a new solution is provided for lightweight design.
The preparation method of the micro-hair hole glass channel rubber material in this embodiment specifically includes the following steps, and it should be noted that, in the preparation of the micro-hair hole glass channel rubber material in this embodiment, there is no strict proportion limit between the parts of the relevant raw materials weighed in the following step s1 and the remaining parts of the relevant raw materials in the step s2, that is, the part proportion of the relevant raw materials in the two steps can be freely set in the preparation.
Meanwhile, the following is referred to as off-line and on-line in a relative sense, in which on-line means that the preparation is performed by a device continuously operated on a production line or a production site, and off-line means that the preparation is performed by a device which is not on the production line or outside the production line.
Firstly, step s1, namely preparing the foaming agent master batch sheet off line, is carried out, and the specific steps are as follows:
s11, weighing part of ethylene propylene diene monomer K3470C, ethylene propylene diene monomer K2450, paraffin oil 25110, fluorine-containing auxiliary agent TP200, carbon black BC1029, carbon black N774, active zinc oxide, stearic acid, a dispersing agent and polyethylene glycol PEG-4000, and mixing to obtain a section A glue;
s12, mixing the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P to obtain a mixed foaming agent, adding a certain amount of the mixed foaming agent into the section A glue obtained in the step s11 according to the weight ratio of the section A glue to the mixed foaming agent of 10;
secondly, step s2 is carried out, namely the micro-pore glass trough sizing material is prepared on line, and the process is as follows:
weighing the rest of ethylene propylene diene monomer K3470C, ethylene propylene diene monomer K2450, active zinc oxide, stearic acid, a dispersant and polyethylene glycol PEG-4000, and adding into an internal mixer for banburying for 1.0-1.1min at a rotation speed of 40rpm; then adding the rest paraffin oil 25110, fluorine-containing additive TP200, carbon black BC1029 and carbon black N774, banburying for 3-4min, exhausting at 120 ℃, and discharging rubber at 150 ℃; and then, smashing and refining in an open mill to reduce the temperature to below 90 ℃, adding sulfur S-80, a moisture absorbent GR, an accelerator, the mixed foaming agent left in the step S12 and the foaming agent master batch prepared in the step S1, conveying to the smashing and refining machine to smash and refine for 2-3min after the feeding is finished, filtering in a rubber filter, discharging strips through a metal opening of the rubber filter, and finally cooling through a cooling line to obtain the micro-porous glass wool groove rubber material.
Wherein, as a preferred embodiment, in the step s1, the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P are compounded in a mass ratio of 2; the smashing and mixing machine in the step s2 can adopt an automatic smashing and mixing machine, and the rubber filter can specifically adopt a gear pump rubber filter.
In addition, in the method for preparing the rubber material, by adopting a foaming agent master rubber sheet pre-mixing technology, the chemical foaming agent EM80NA-P and the physical foaming agent expansion microsphere DU1420P are mixed with the section A rubber in advance, so that the chemical foaming agent EM80NA-P and the physical foaming agent expansion microsphere DU1420P can be more fully pre-dispersed in the section A rubber, the problem of uneven dispersion of the foaming agent can be greatly solved, the production process for preparing the micro-porous glass wool groove rubber material is more stable, the stability of the section of the product can be improved, and the production efficiency of the rubber material can be improved.
The preparation of the micro-perforated glass slot sizing of the present example will be further described in several specific preparation examples.
Preparation of example 1
The micro-porous glass wool groove sizing material of the preparation example is prepared from the following raw materials in parts by weight:
ethylene propylene diene monomer K3470C:70 parts of (B); ethylene propylene diene monomer K2450:30 parts of a binder; active zinc oxide S-70G:6 parts of (1); stearic acid SA-1801:1.5 parts; dispersant L-24:1.5 parts; polyethylene glycol PEG-4000:1.5 parts; paraffin oil 25110:64 parts; fluorine-containing auxiliary agent TP200:10 parts of (A); carbon black BC1029:135 parts of (A); carbon black N774:65 parts of (1); sulfur S-80:1.5 parts; moisture absorbent GR:7 parts; accelerator M-75:1.0 part; accelerator DM-75:0.5 part; accelerator ZBEC-70:0.8 part; accelerator TP-50:1.5 parts; accelerator ZAT-70:0.6 part; promoter CLD-80:1.6 parts; 2 parts of chemical foaming agent EM80 NA-P; the weight part of physical blowing agent expanded microsphere DU1420P was 5.0 parts.
Wherein, the chemical foaming agent EM80NA-P and the physical foaming agent expanded microsphere DU1420P are compounded and prepared according to the mass ratio of 2.
When the micro-hair-hole glass wool groove sizing material of the preparation example is prepared, a nitrosamine-free environment-friendly vulcanization system is adopted, the foaming agent masterbatch piece is prepared off-line in the step s1, and then the micro-hair-hole glass wool groove sizing material is prepared on line in the step s 2.
Wherein, when the foaming agent master batch sheet is prepared in the step s1, the following raw materials are firstly weighed: ethylene propylene diene monomer K3470C:15 parts of ethylene propylene diene monomer K2450:7 parts of paraffin oil 25110:1.2 parts of fluorine-containing additive TP200:1 part of carbon black BC1029:30 parts of carbon black N774:15 parts of active zinc oxide: 1.5 parts, stearic acid: 0.5 part of dispersant: 0.5 part, polyethylene glycol PEG-4000:0.5 part by weight, and mixing to obtain the A-stage adhesive.
And then, mixing the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P according to the mixture ratio to obtain the mixed foaming agent. And then according to the weight ratio of the section A glue to the mixed foaming agent of 10, adding a certain amount of the mixed foaming agent into the section A glue, then putting the mixture into an internal mixer for mixing for 2-3min, then discharging the glue to an open mill for 5 times of thin passing and smashing for 120s, then discharging the strips according to the strip discharging size, and cooling to obtain the foaming agent master batch.
When the micro-hair hole glass channel sizing material is prepared on line, the rest ethylene propylene diene monomer K3470C is weighed: 55 parts of ethylene propylene diene monomer K2450:23 parts of active zinc oxide S-70G:4.5 parts, stearic acid SA-1801:1.0 part and a dispersant L-24:1.0 part and polyethylene glycol PEG-4000:1.0 part, adding the materials into an internal mixer for banburying for 1.0-1.1min at the rotating speed of 40rpm, and then adding the rest paraffin oil 25110:62.8 parts of fluorine-containing auxiliary agent TP200:9 parts of carbon black BC1029:105 parts of carbon black N774:50 parts, banburying for 3 to 4min, exhausting at 120 ℃, discharging rubber at 150 ℃, then, smashing and cooling to below 90 ℃ in an open mill, adding sulfur S-80, a moisture absorbent GR, six accelerators, the rest mixed foaming agent and the foaming agent masterbatch prepared in the step, after the feeding is finished, conveying to an automatic smashing and refining machine, smashing and refining for 2 to 3min, then filtering in a gear pump rubber filter, discharging strips through a metal opening of the rubber filter, and finally cooling through a cooling line to obtain the micro-porous glass wool groove rubber material.
Preparation of example 2
The micro-porous glass wool groove sizing material of the preparation example comprises the following raw materials in parts by weight: ethylene propylene diene monomer K3470C:60 parts; ethylene propylene diene monomer K2450:40 parts of a binder; active zinc oxide S-70G:6 parts; stearic acid SA-1801:1.5 parts; dispersant L-24:1.5 parts; polyethylene glycol PEG-4000:1.5 parts; paraffin oil 25110:64 parts; fluorine-containing additive TP200:10 parts of (A); carbon black BC1029:135 parts of (A); carbon black N774:65 parts of a binder; sulfur S-80:1.5 parts; moisture absorbent GR:7 parts; accelerator M-75:1.0 part; accelerator DM-75:0.5 part; accelerator ZBEC-70:0.8 part; accelerator TP-50:1.5 parts; accelerator ZAT-70:0.6 part; promoter CLD-80:1.6 parts; 2 parts of chemical foaming agent EM80 NA-P; the weight part of physical blowing agent expanded microsphere DU1420P was 5.0 parts.
Wherein, the chemical foaming agent EM80NA-P and the physical foaming agent expanded microsphere DU1420P are compounded and prepared according to the mass ratio of 2.
When the micro-hair-hole glass wool groove sizing material of the preparation example is prepared, a nitrosamine-free environment-friendly vulcanization system is adopted, the foaming agent masterbatch piece is prepared off-line in the step s1, and then the micro-hair-hole glass wool groove sizing material is prepared on line in the step s 2.
Wherein, when the foaming agent master batch sheet is prepared in the step s1, the following raw materials are firstly weighed: ethylene propylene diene monomer K3470C:20 parts of ethylene propylene diene monomer K2450:10 parts, paraffin oil 25110:5 parts of fluorine-containing auxiliary agent TP200:1 part of carbon black BC1029:40 parts of carbon black N774:10 parts of active zinc oxide: 1.5 parts, stearic acid: 0.5 part of dispersant: 0.5 part, polyethylene glycol PEG-4000:0.5 part, and mixing to obtain the A-stage adhesive.
And then, mixing the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P according to the proportion to obtain the mixed foaming agent. And then according to the weight ratio of the section A glue to the mixed foaming agent of 10, adding a certain amount of the mixed foaming agent into the section A glue, then putting the mixture into an internal mixer for mixing for 2-3min, then discharging the glue to an open mill for 5 times of thin passing and smashing for 120s, then discharging the strips according to the strip discharging size, and cooling to obtain the foaming agent master batch.
When the micro-pore glass wool groove sizing material is prepared on line, the rest ethylene propylene diene monomer K3470C is weighed: 40 parts of ethylene propylene diene monomer K2450:30 parts of active zinc oxide S-70G:4.5 parts, stearic acid SA-1801:1.0 part and a dispersant L-24:1.0 part and polyethylene glycol PEG-4000:1.0 part, banburying in an internal mixer for 1.0-1.1min at a rotating speed of 40rpm, and adding the rest paraffin oil 25110:59 parts of fluorine-containing additive TP200:9 parts of carbon black BC1029:95 parts of carbon black N774:55 parts, banburying for 3-4 min, exhausting at 120 ℃, discharging rubber at 150 ℃, then, smashing and cooling to below 90 ℃ in an open mill, adding sulfur S-80, a moisture absorbent GR, six accelerators, the rest foaming agent and the foaming agent master batch prepared in the previous step, after the feeding is finished, conveying to an automatic smashing and refining machine, smashing and refining for 2-3min, then filtering in a gear pump rubber filter, discharging strips through a metal opening of the rubber filter, and finally cooling through a cooling line to obtain the micro-porous glass wool groove rubber material.
Preparation of example 3
The micro-porous glass wool groove sizing material of the preparation example comprises the following raw materials in parts by weight: ethylene propylene diene monomer K3470C:50 parts of a mixture; ethylene propylene diene monomer K2450:50 parts of a mixture; active zinc oxide S-70G:6 parts of (1); stearic acid SA-1801:1.5 parts; dispersant L-24:1.5 parts; polyethylene glycol PEG-4000:1.5 parts; paraffin oil 25110:64 parts; fluorine-containing auxiliary agent TP200:10 parts of a binder; carbon black BC1029:135 parts of (A); carbon black N774:65 parts of (1); sulfur S-80:1.2 parts of; moisture absorbent GR:7 parts; accelerator M-75:1.0 part; accelerator DM-75:0.5 part; accelerator ZBEC-70:0.8 part; accelerator TP-50:1.5 parts; accelerator ZAT-70:0.6 part; promoter CLD-80:1.6 parts; 2 parts of chemical foaming agent EM80 NA-P; the weight part of physical blowing agent expanded microsphere DU1420P was 5.0 parts.
Wherein, the chemical foaming agent EM80NA-P and the physical foaming agent expanded microsphere DU1420P are compounded and prepared according to the mass ratio of 2.
When the micro-hair-hole glass channel sizing material of the preparation example is prepared, a nitrosamine-free environment-friendly vulcanization system is adopted, the foaming agent master batch sheet is prepared off-line in the step s1, and then the micro-hair-hole glass channel sizing material is prepared on line in the step s 2.
Wherein, when the foaming agent master batch sheet is prepared in the step s1, the following raw materials are firstly weighed:
ethylene propylene diene monomer K3470C:15 parts of ethylene propylene diene monomer K2450:15 parts of paraffin oil 25110:14 parts of fluorine-containing additive TP200:2 parts of carbon black BC1029:30 parts of carbon black N774:15 parts of active zinc oxide: 2 parts and stearic acid: 0.7 part of dispersant: 0.7 part, polyethylene glycol PEG-4000:0.7 part by weight, and mixing to obtain the A-stage adhesive.
And then, mixing the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P according to the mixture ratio to obtain the mixed foaming agent. And then according to the weight ratio of the section A glue to the mixed foaming agent of 10, adding a certain amount of the mixed foaming agent into the section A glue, then putting the mixture into an internal mixer for mixing for 2-3min, then discharging the glue to an open mill for 5 times of thin passing and smashing for 120s, then discharging the strips according to the strip discharging size, and cooling to obtain the foaming agent master batch.
When the micro-pore glass wool groove sizing material is prepared on line, the rest ethylene propylene diene monomer K3470C is weighed: 35 parts of ethylene propylene diene monomer K2450:35 parts of active zinc oxide S-70G:4 parts, stearic acid SA-1801:0.8 part, and a dispersant L-24:0.8 part and polyethylene glycol PEG-4000:0.8 part, feeding the mixture into an internal mixer for banburying for 1.0-1.1min at the rotating speed of 40rpm, and then adding the rest paraffin oil 25110:62.8 parts of fluorine-containing additive TP200:8 parts of carbon black BC1029:105 parts of carbon black N774:50 parts, banburying for 3 to 4min, exhausting at 120 ℃, discharging rubber at 150 ℃, then smashing and smelting in an open mill to reduce the temperature to below 90 ℃, adding sulfur S-80, a moisture absorbent GR, six accelerators, the rest foaming agent and the foaming agent masterbatch prepared in the step, after feeding, conveying to an automatic smashing and smelting machine for smashing and smelting for 2 to 3min, then filtering in a gear pump rubber filter, discharging strips through a metal opening of the rubber filter, and finally cooling through a cooling line to obtain the micro-porous glass slot rubber material.
Preparation of example 4
The micro-pore glass wool groove sizing material of the preparation example is prepared from the following raw materials in parts by weight:
ethylene propylene diene monomer K3470C:70 parts of (B); ethylene propylene diene monomer K2450:30 parts of (1); active zinc oxide S-70G:6 parts of (1); stearic acid SA-1801:1.5 parts; dispersant L-24:1.5 parts; polyethylene glycol PEG-4000:1.5 parts; paraffin oil 25110:65 parts of (1); fluorine-containing auxiliary agent TP200:5 parts of a mixture; carbon black BC1029:120 parts of (A); carbon black N774:50 parts of a mixture; sulfur S-80:1.5 parts; moisture absorbent GR:7 parts; accelerator M-75:1.0 part; accelerator DM-75:0.5 part; accelerator ZBEC-70:0.8 part; accelerator TP-50:1.5 parts; accelerator ZAT-70:0.6 part; promoter CLD-80:1.6 parts; 2 parts of chemical foaming agent EM80 NA-P; the weight part of physical blowing agent expanded microsphere DU1420P was 5.0 parts.
Wherein, the chemical foaming agent EM80NA-P and the physical foaming agent expanded microsphere DU1420P are compounded and prepared according to the mass ratio of 2.
When the micro-hair-hole glass channel sizing material of the preparation example is prepared, a nitrosamine-free environment-friendly vulcanization system is adopted, the foaming agent master batch sheet is prepared off-line in the step s1, and then the micro-hair-hole glass channel sizing material is prepared on line in the step s 2.
Wherein, when the foaming agent master batch sheet is prepared in the step s1, the following raw materials are firstly weighed: ethylene propylene diene monomer K3470C:25 parts of ethylene propylene diene monomer K2450:10 parts, paraffin oil 25110:5 parts of fluorine-containing auxiliary agent TP200:2 parts of carbon black BC1029:40 parts of carbon black N774:15 parts of active zinc oxide: 1.5 parts, stearic acid: 0.5 part of dispersant: 0.5 part, polyethylene glycol PEG-4000:0.5 part by weight, and mixing to obtain the A-stage adhesive.
And then, mixing the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P according to the mixture ratio to obtain the mixed foaming agent. And then according to the weight ratio of the section A glue to the mixed foaming agent of 10, adding a certain amount of the mixed foaming agent into the section A glue, then putting the mixture into an internal mixer for mixing for 2-3min, then discharging the glue to an open mill for 5 times of thin passing and smashing for 120s, then discharging the strips according to the strip discharging size, and cooling to obtain the foaming agent master batch.
When the micro-hair hole glass channel sizing material is prepared on line, the rest ethylene propylene diene monomer K3470C is weighed: 45 parts of ethylene propylene diene monomer K2450:20 parts of active zinc oxide S-70G:4.5 parts, stearic acid SA-1801:1.0 part and a dispersant L-24:1.0 part and polyethylene glycol PEG-4000:1.0 part, adding the materials into an internal mixer for banburying for 1.0-1.1min at the rotating speed of 40rpm, and then adding the rest paraffin oil 25110:60 parts of fluorine-containing auxiliary agent TP200:3 parts of carbon black BC1029:80 parts of carbon black N774: and 35 parts of the raw materials are subjected to internal mixing for 3 to 4min, the raw materials are exhausted at 120 ℃, the raw materials are discharged at 150 ℃, then the raw materials are subjected to smashing and mixing in an open mill and cooled to below 90 ℃, sulfur S-80, a moisture absorbent GR, six accelerators, the rest mixed foaming agent and the foaming agent masterbatch prepared in the step are added, after the raw materials are fed, the raw materials are conveyed to an automatic smashing and mixing machine and are subjected to smashing and mixing for 2 to 3min, then the raw materials are filtered in a gear pump rubber filter, strip discharging is carried out through a metal opening of the rubber filter, and finally the micro-porous glass wool groove rubber material is obtained through cooling of a cooling line.
Preparation of example 5
The micro-porous glass wool groove sizing material of the preparation example is prepared from the following raw materials in parts by weight:
ethylene propylene diene monomer K3470C:50 parts of a binder; ethylene propylene diene monomer K2450:50 parts of a binder; active zinc oxide S-70G:6 parts of (1); stearic acid SA-1801:1.5 parts; dispersant L-24:1.5 parts; polyethylene glycol PEG-4000:1.5 parts; paraffin oil 25110:55 parts of (1); fluorine-containing additive TP200:15 parts of (1); carbon black BC1029:140 parts of (B); carbon black N774:70 parts of (B); sulfur S-80:1.5 parts; moisture absorbent GR:7 parts; accelerator M-75:1.0 part; accelerator DM-75:0.5 part; accelerator ZBEC-70:0.8 part; accelerator TP-50:1.5 parts; accelerator ZAT-70:0.6 part; promoter CLD-80:1.6 parts; 2 parts of chemical foaming agent EM80 NA-P; the weight part of physical blowing agent expanded microsphere DU1420P was 5.0 parts.
Wherein, the chemical foaming agent EM80NA-P and the physical foaming agent expanded microsphere DU1420P are compounded and prepared according to the mass ratio of 2.
When the micro-hair-hole glass channel sizing material of the preparation example is prepared, a nitrosamine-free environment-friendly vulcanization system is adopted, the foaming agent master batch sheet is prepared off-line in the step s1, and then the micro-hair-hole glass channel sizing material is prepared on line in the step s 2.
Wherein, when the foaming agent master batch sheet is prepared in the step s1, the following raw materials are firstly weighed: ethylene propylene diene monomer K3470C:20 parts of ethylene propylene diene monomer K2450:25 parts of paraffin oil 25110:8 parts of fluorine-containing auxiliary agent TP200:3 parts of carbon black BC1029:30 parts of carbon black N774:20 parts of active zinc oxide: 1.5 parts, stearic acid: 0.5 part of dispersant: 0.5 part, polyethylene glycol PEG-4000:0.5 part, and mixing to obtain the A-stage adhesive.
And then, mixing the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P according to the mixture ratio to obtain the mixed foaming agent. And then according to the weight ratio of the section A glue to the mixed foaming agent of 10, adding a certain amount of the mixed foaming agent into the section A glue, then putting the mixture into an internal mixer for mixing for 2-3min, then discharging the glue to an open mill for 5 times of thin passing and smashing for 120s, then discharging the strips according to the strip discharging size, and cooling to obtain the foaming agent master batch.
When the micro-hair hole glass channel sizing material is prepared on line, the rest ethylene propylene diene monomer K3470C is weighed: 30 parts of ethylene propylene diene monomer K2450:25 parts of active zinc oxide S-70G:4.5 parts, stearic acid SA-1801:1.0 part and a dispersant L-24:1.0 part and polyethylene glycol PEG-4000:1.0 part, adding the materials into an internal mixer for banburying for 1.0-1.1min at the rotating speed of 40rpm, and then adding the rest paraffin oil 25110:47 parts of fluorine-containing additive TP200:12 parts of carbon black BC1029:110 parts, carbon black N774:50 parts, banburying for 3 to 4min, exhausting at 120 ℃, discharging rubber at 150 ℃, then, smashing and cooling to below 90 ℃ in an open mill, adding sulfur S-80, a moisture absorbent GR, six accelerators, the rest mixed foaming agent and the foaming agent masterbatch prepared in the step, after the feeding is finished, conveying to an automatic smashing and refining machine, smashing and refining for 2 to 3min, then filtering in a gear pump rubber filter, discharging strips through a metal opening of the rubber filter, and finally cooling through a cooling line to obtain the micro-porous glass wool groove rubber material.
The performance test of the micro-foamed glass wool slot rubber compound prepared in each preparation example is carried out, and the test results are shown in the following table:
as can be seen from the above table, the hardness of the rubber material product prepared by using the rubber material formula and the preparation method thereof of the embodiment is greater than or equal to 95A, the density is (0.9 ± 0.05) g/cm3, and the weight of the rubber material product is reduced by about 29% compared with the density of the existing dense rubber material which is about 1.27g/cm3, so that the hardness of the product can be improved, the density of the product can be reduced, and the light weight of the rubber material product can be realized.
In addition, the embodiment also relates to the vehicle sealing strip and the preparation method thereof.
As shown in fig. 1, the vehicle weather strip of the present embodiment specifically includes a first body 1 and a second body 2 connected to each other, and lip structures 4 are disposed on both the first body 1 and the second body 2.
The first body 1 is made of the micro-hair-hole glass groove rubber material, and one end of the first body 1 is bent towards one side to form a clamping groove 10. The second body 2 is connected to the end of the first body 1 far away from the clamping groove 10, and a mounting groove 20 is formed on the second body 2, and a lip structure 4 is also formed on the wall of the mounting groove 20. And a frame 3 disposed with a ring installation groove 20 is embedded in the second body 1.
It should be noted that, in this embodiment, the lip structure 4 is disposed on both the first body 1 and the second body 2, but it may also be disposed on only the first body 1 or only the second body 2, and the specific shape of the lip structure 4 may be designed accordingly according to actual needs.
In this embodiment, first main part 1 and second main part 2 are the holistic bearing structure of sealing strip, and first main part 1 is the holistic important support part of sealing strip, and it links to each other with the stand joint of vehicle, and its performance requirement is higher, and as the improvement of this embodiment, this first main part 1 adopts above-mentioned micro hair hole glass groove sizing material to make. And the second body 2, typically a solid glue with a hardness of 70A. The lip structure 4 mainly plays a role of sealing, and the dense glue used for manufacturing the lip structure generally has the hardness of 65A-70A. The frame 3 is typically made of steel and is used to improve the stability of the installed sealing strip.
The preparation method of the vehicle sealing strip specifically comprises the steps of extruding a semi-finished product of the sealing strip by an extruder, carrying out microwave vulcanization and hot air vulcanization, and carrying out surface spraying treatment, cooling, curing and cutting to obtain the vehicle sealing strip.
Wherein, the microwave vulcanization adopts two sections of microwave vulcanization furnaces, the microwave power is respectively 7.0 plus or minus 0.5KW/3.0 plus or minus 0.5KW, the vulcanization temperature is respectively 260 plus or minus 10 ℃/250 plus or minus 10 ℃, the hot air vulcanization adopts three sections of hot air vulcanization furnaces, and the vulcanization temperature is respectively 250 plus or minus 10 ℃/240 plus or minus 10 ℃.
In addition, the surface spraying treatment can make the surface of the sealing strip smooth and improve the wear resistance of the sealing strip. And the curing treatment adopts a three-section hot air curing furnace to cure the spray paint sprayed on the semi-finished product of the sealing strip, so that the coating is crosslinked and cured to meet the wear-resistant requirement. In addition, the cooling can be carried out by cooling with a cooling water tank or air cooling, an automatic cutting machine can be used for cutting, and the EU box can be used for packaging after cutting.
The vehicle sealing strip of this embodiment is favorable to improving the mechanical properties of sealing strip product through adopting foretell little hair hole glass groove sizing material to can reduce the density of sealing strip, also do benefit to the lightweight design that realizes the sealing strip product.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (10)
1. The micro-hair hole glass wool groove sizing material is characterized in that:
the rubber material is prepared from the following raw materials in parts by weight: ethylene propylene diene monomer K3470C: 50-70 parts; ethylene propylene diene monomer K2450: 30-50 parts; active zinc oxide: 5-7 parts; stearic acid: 1-2 parts; dispersing agent: 1-3 parts; polyethylene glycol PEG-4000: 1-2 parts; paraffin oil 25110: 55-65 parts; fluorine-containing additive TP200: 5-15 parts; carbon black BC1029: 120-140 parts; carbon black N774: 50-70 parts; sulfur S-80:0.7 to 1.7 portions; moisture absorbent GR: 5-9 parts of a solvent; accelerator (b): 4-8.5 parts; foaming agent: 6.5 to 8.5 portions of; the foaming agent is compounded by a chemical foaming agent EM80NA-P and a physical foaming agent expanded microsphere DU 1420P.
2. The micro-porous glass run size as claimed in claim 1, characterized in that:
the chemical foaming agent EM80NA-P accounts for 1.5-2.5 parts by weight; the weight portion of the physical foaming agent expanded microsphere DU1420P is 3.75-6.25.
3. The micro-perforated glass run compound according to claim 1, characterized in that:
the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P are compounded according to the mass ratio of 2.
4. The micro-porous glass run size as claimed in claim 1, characterized in that:
S-70G is adopted as the active zinc oxide, SA-1801 is adopted as the stearic acid, and L-24 is adopted as the dispersant.
5. Micro-cellular glass slot compound according to any one of claims 1 to 4, characterized in that:
the accelerant comprises the following components in parts by weight: accelerator M-75:0.5 to 1.5 portions; accelerator DM-75:0.4 to 1.0 portion; accelerator ZBEC-70:0.6 to 1.0 portion; accelerator TP-50:1.0 to 2.0 portions; accelerator ZAT-70:0.5 to 1.0 portion; promoter CLD-80:1.0 to 2.0 portions.
6. The method for preparing the micro-porous glass wool groove sizing material according to claim 1, characterized by comprising the following steps: the preparation method comprises the following steps:
s1, preparing a foaming agent master batch:
s11, weighing part of ethylene propylene diene monomer K3470C, ethylene propylene diene monomer K2450, paraffin oil 25110, fluorine-containing auxiliary agent TP200, carbon black BC1029, carbon black N774, active zinc oxide, stearic acid, a dispersing agent and polyethylene glycol PEG-4000, and mixing to obtain a section A glue;
s12, mixing a chemical foaming agent EM80NA-P and physical foaming agent expanded microspheres DU1420P to obtain a mixed foaming agent, adding a certain amount of the mixed foaming agent into the section A glue obtained in the step s11 according to the weight ratio of the section A glue to the mixed foaming agent of 10;
s2, preparing a micro-pore glass wool groove sizing material:
weighing the rest of ethylene propylene diene monomer K3470C, ethylene propylene diene monomer K2450, active zinc oxide, stearic acid, a dispersant and polyethylene glycol PEG-4000, and adding into an internal mixer for banburying for 1.0-1.1min at a rotation speed of 40rpm; then adding the rest paraffin oil 25110, fluorine-containing additive TP200, carbon black BC1029 and carbon black N774, banburying for 3-4min, exhausting at 120 ℃, and discharging rubber at 150 ℃; and then, smashing and smelting in an open mill to reduce the temperature to below 90 ℃, adding sulfur S-80, a moisture absorbent GR, an accelerator, the rest mixed foaming agent in the step S12 and the prepared foaming agent masterbatch sheet, conveying to the smashing and smelting machine to smash and smelt for 2-3min after the feeding is finished, then filtering in a filter, discharging strips through a metal of the filter, and finally cooling through a cooling line to obtain the micro-pore glass wool groove rubber material.
7. The method for preparing the micro-pore glass wool groove sizing material according to claim 6, wherein the method comprises the following steps:
in the step s1, compounding the chemical foaming agent EM80NA-P and the physical foaming agent expanded microspheres DU1420P according to a mass ratio of 2;
in the step s2, the smashing and mixing machine adopts an automatic smashing and mixing machine, and the rubber filter adopts a gear pump rubber filter.
8. A vehicle weather strip, characterized in that:
the vehicle sealing strip comprises a first main body (1) and a second main body (2) which are connected, and a lip structure (4) is arranged on the first main body (1) and/or the second main body (2);
the first body (1) is made of the micro-hair hole glass wool groove sizing material of any one of claims 1 to 5, and one end of the first body (1) is provided with a clamping groove (10);
the second main body (2) is connected to one end, far away from the clamping groove (10), of the first main body (1), an installation groove (20) is formed in the second main body (2), and a framework (3) is embedded in the second main body (2) and is provided with a ring in the installation groove (20).
9. The method of producing a weather strip for vehicles according to claim 8, wherein:
the preparation method comprises the steps of extruding a semi-finished product of the sealing strip by an extruder, carrying out microwave vulcanization and hot air vulcanization treatment, and carrying out surface spraying treatment, cooling, curing and cutting to obtain the vehicle sealing strip;
wherein, the microwave vulcanization adopts two sections of microwave vulcanization furnaces, the microwave power is respectively 7.0 plus or minus 0.5KW/3.0 plus or minus 0.5KW, the vulcanization temperature is respectively 260 plus or minus 10 ℃/250 plus or minus 10 ℃, the hot air vulcanization adopts three sections of hot air vulcanization furnaces, and the vulcanization temperature is respectively 250 plus or minus 10 ℃/240 plus or minus 10 ℃.
10. The method of producing a vehicle weather strip according to claim 9, wherein:
and solidifying the spray paint sprayed on the semi-finished sealing strip by adopting a three-section hot air curing furnace, and cooling by adopting a cooling water tank and air cooling.
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| CN202211116972.8A CN115197502A (en) | 2022-09-14 | 2022-09-14 | Micro-hair-hole glass wool groove sizing material and preparation thereof, and vehicle sealing strip and preparation thereof |
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