CN110819127A - Door sealing strip LIP, door sealing strip manufacturing method and automobile - Google Patents
Door sealing strip LIP, door sealing strip manufacturing method and automobile Download PDFInfo
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- CN110819127A CN110819127A CN201911204767.5A CN201911204767A CN110819127A CN 110819127 A CN110819127 A CN 110819127A CN 201911204767 A CN201911204767 A CN 201911204767A CN 110819127 A CN110819127 A CN 110819127A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
- C08L91/06—Waxes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J10/00—Sealing arrangements
- B60J10/15—Sealing arrangements characterised by the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J10/00—Sealing arrangements
- B60J10/80—Sealing arrangements specially adapted for opening panels, e.g. doors
- B60J10/84—Sealing arrangements specially adapted for opening panels, e.g. doors arranged on the vehicle body
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention provides a door sealing strip LIP, a door sealing strip, a manufacturing method of the door sealing strip and an automobile. According to the invention, the short fibers are added and polished to expose part of the short fibers, so that the skin texture imitating effect can be formed on the appearance surface of the sealing strip LIP, and the appearance of the sealing strip LIP can be improved.
Description
Technical Field
The invention relates to the technical field of automobile sealing strips, in particular to a door sealing strip LIP, and also relates to the door sealing strip with the door sealing strip LIP, a preparation method of the door sealing strip and an automobile using the door sealing strip.
Background
In the automobile sealing strip, taking the automobile sealing strip as an example, the automobile sealing strip is installed on an automobile door and mainly plays the functions of water prevention, dust prevention, wind prevention, noise reduction and the like. In the door weather strip, LIP of the weather strip is matched with the interior trim to play a role in decoration, and the LIP is an important component of the overall quality of the automobile in the opening and closing states of the automobile door.
At present, the surface treatment of the vehicle door sealing strip LIP mainly comprises embossing, sponge coating, cloth coating and flocking. Embossing is to form concave-convex lines on the LIP surface through a rolling piece, so that the cost is low, but the embossing has the defect of poor taste. The sponge sticking and sticking cloth is characterized in that a sponge layer or a cloth layer is covered on the surface of the LIP, the sponge layer or the cloth layer is used as an external decoration surface, and the appearance of the LIP is improved by utilizing the sponge layer or the cloth layer, but the two treatment forms have the problems of complex process and high cost.
Flocking is to utilize the physical characteristic that like charges repel each other and opposite charges attract each other, make the villus carry the negative charge, put LIP needing flocking under the condition of zero potential or earthing, the villus receives the attraction of different potential LIP, take the form of vertical accelerating to fly to the LIP surface needing flocking, because LIP surface is coated with the adhesive, thus make the villus be stuck on LIP vertically. The flocking effect is better than the flocking effect, but the LIP flocking treatment has the defects of long extruded line body and high cost
Disclosure of Invention
In view of this, the present invention is directed to provide a door weatherstrip LIP, which can improve the appearance of the LIP and avoid the defects of the prior art, such as complicated process and high cost.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a door sealing strip LIP is prepared from the following raw materials in parts by weight: EPDM 3110M: 50-90 parts; EPDM 3092M: 10-50 parts; carbon black BC 1031: 150-; paraffin oil R-2291: 70-110 parts; calcium carbonate: 30-70 parts; zinc oxide: 6-10 parts; stearic acid: 1-3 parts; polyethylene glycol: 1-3 parts; flow aid L-24: 1-3 parts; short fiber: 20-80 parts; accelerator (b): 2.3-4.6 parts; sulfur S-80: 1.0-1.4 parts;
the length of the short fibers is 2-6mm, and after the rubber material is extruded, molded and vulcanized, one side surface of the rubber material is polished along a single direction through a grinding wheel, so that the short fibers are partially exposed on the surface.
Further, the short fiber is PA-66 short fiber.
Further, the accelerator comprises: accelerator M-75: 1.0-2.0 parts; accelerator DPTT-70: 0.3-0.7 part; accelerator DTDM-80: 0.6-1.0 part; accelerator DM-75: 0.3-0.7 part; accelerator DCP-80: 0.1-0.2.
Further, the rubber material for preparing the vehicle door sealing strip LIP comprises the following raw materials in parts by weight: EPDM 3110M: 60 parts; EPDM 3092M: 40 parts of a mixture; carbon black BC 1031: 160 parts of (B); paraffin oil R-2291: 90 parts of a mixture; calcium carbonate: 50 parts of a mixture; zinc oxide: 6 parts of (1); stearic acid: 2 parts of (1); polyethylene glycol: 2 parts of (1); flow aid L-24: 2 parts of (1); short fiber: 50 parts of a mixture; accelerator M-75: 1.5 parts; accelerator DPTT-70: 0.5 part; accelerator DTDM-80: 0.8 part; accelerator DM-75: 0.5 part; accelerator DCP-80: 0.15; sulfur S-80: 1.2 parts.
According to the door sealing strip LIP, the short fibers are added into the prepared rubber material, and after the LIP is molded and vulcanized, the grinding wheel is used for grinding to expose part of the short fibers, so that the skin-imitated effect can be formed on the appearance surface of the LIP, and the appearance of the door sealing strip LIP can be improved. And because short fibers are added into the sizing material, and the sizing material can be formed only by grinding in one direction through a grinding wheel, compared with the existing modes of adhering sponge, cloth, flocking and the like, the method also has the advantages of simple process and low cost, and further can overcome the defects in the existing mode.
Another object of the present invention is to provide a door weather strip, which includes a main body made of dense rubber and having a mounting groove and a frame embedded therein, and a sponge tube made of sponge rubber located at one side of the main body, and further includes the door weather strip LIP as described above located at the other side of the main body with respect to the sponge tube and extending to the top of the main body, and the exposed surface of the short fibers of the door weather strip LIP constitutes an appearance surface of the door weather strip LIP.
Meanwhile, the invention also provides a preparation method of the vehicle door sealing strip, which comprises the following steps:
a. proportioning, namely weighing each raw material component;
b. mixing rubber materials, namely mixing the rubber materials of the main body, the sponge tube and the door sealing strip LIP respectively;
c. extruding, by using a rubber screw extruder, a door weather strip from the compounded rubber of the body, the sponge tube and the door weather strip LIP;
d. vulcanizing, namely vulcanizing the extruded vehicle door sealing strip by adopting a microwave hot air vulcanizing furnace;
e. polishing, namely polishing the surface of the door seal LIP in a single direction by using a grinding wheel to expose short fiber parts on the surface to form an appearance surface of the door seal LIP;
f. and cutting, namely cutting and segmenting the vehicle door sealing strip.
Further, the mixing of the rubber compound of the door weatherstrip LIP includes:
s1. mixing, adding EPDM raw rubber, zinc oxide, stearic acid and polyethylene glycol to mix for 60s by using an internal mixer, then adding carbon black, paraffin oil and a flow aid to mix until 105 ℃ and exhausting, adding short fiber while exhausting, then mixing again until 140 ℃ and discharging rubber, tabletting the mixed rubber by using an open mill, and storing the cut pieces after air cooling;
and s2, two-stage mixing, namely mixing the first-stage mixed rubber for 60s by using an internal mixer, then adding calcium carbonate, an accelerator and sulfur, mixing to 75 ℃ to discharge rubber, and tabletting and stripping by using an open mill.
Further, the extrusion speed in the step c is 18m/min, the five-section microwave hot air vulcanizing furnace is used for vulcanizing in the step d, the first two sections are in a microwave hot air adding mode, the last three sections are in a pure hot air mode, and the vulcanizing temperature of each section is 250 ℃, 260 ℃ and 260 ℃ in sequence.
In addition, the invention also provides an automobile, and the door sealing strip is arranged at the door of the automobile.
According to the automobile and the door sealing strip, the door sealing strip LIP is arranged, the addition and polishing of short fibers can be utilized, so that the appearance surface of the door sealing strip LIP forms a skin-like effect, the appearance of the door sealing strip LIP can be improved, and the practicability is good.
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 door weather strip according to an embodiment of the present invention;
FIG. 2 is a schematic view of a sample of LIP fraction prepared based on preparation example 2 in example of the present invention;
description of reference numerals:
1-main body, 2-framework, 3-sponge tube, 4-sealing lip edge, 5-car body sheet metal and 6-car door sheet metal.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
The embodiment relates to a door sealing strip LIP, this door sealing strip LIP also is the sealing LIP part in the door sealing strip, and its overall arrangement in the door sealing strip can see and show in fig. 1, and this door sealing strip LIP not only plays waterproof, dustproof, prevent wind and separation noise etc. effect in use, and it is a main outward appearance position of door sealing strip simultaneously, and under the car door opens and close the condition, door sealing strip LIP is all visible, therefore is an important outward appearance point of whole car door position.
The design of the door sealing strip LIP of the embodiment is to improve the outer facing effect of the LIP, so as to achieve the purpose of improving the quality of the whole vehicle.
Specifically, for the door weatherstrip LIP of the present embodiment, first, the rubber material for manufacturing the door weatherstrip LIP includes the following raw materials in parts by weight: EPDM 3110M: 50-90 parts; EPDM 3092M: 10-50 parts; carbon black BC 1031: 150-; paraffin oil R-2291: 70-110 parts; calcium carbonate: 30-70 parts; zinc oxide: 6-10 parts; stearic acid: 1-3 parts; polyethylene glycol: 1-3 parts; flow aid L-24: 1-3 parts; short fiber: 20-80 parts; accelerator (b): 2.3-4.6 parts; sulfur S-80: 1.0 to 1.4 portions.
Secondly, after the above compound is extruded and vulcanized, this embodiment also specifically contemplates that one side surface of the compound, which is generally the outward facing surface of the weatherstrip LIP, is ground in a single direction by a grinding wheel, and that a portion of the short fibers incorporated in the compound is exposed to the surface by the grinding. Therefore, the outer decorative surface of the LIP can form a leather-like effect by exposing the short fibers, and the purpose of improving the outer decorative surface of the LIP can be achieved. The improvement of the appearance of the door weather strip LIP indirectly also improves the grade of the whole vehicle.
In the embodiment, through the selection of two raw rubbers of EPDM3110M and EPDM3092M, the characteristic of high Mooney molecular weight of the raw rubbers can be utilized to ensure that the raw rubbers have good wrapping property so as to avoid the separation of short fibers. Moreover, the length of the short fiber adopted in the embodiment can be between 2mm and 6mm, and preferably 2.5mm to 3.5mm, and for example, the short fiber with the length of 2.5mm, 2.7mm, 3.0mm, 3.2mm and 3.5mm can be adopted, and meanwhile, when the short fiber is specifically implemented, the short fiber can be, for example, PA-66 short fiber which is produced by the new material of short fiber of Heilongjiang hong Yu.
In addition, the accelerator used in the embodiment may specifically include the following types in parts by weight: accelerator M-75: 1.0-2.0 parts of accelerator DPTT-70: 0.3-0.7 part of accelerator DTDM-80: 0.6-1.0 part of accelerator DM-75: 0.3-0.7 parts, and accelerator DCP-80: 0.1-0.2.
Based on the above, a further preferable embodiment of the rubber compound for manufacturing the door weatherstrip LIP of the present embodiment may be the following raw materials, still by weight: EPDM 3110M: 60 parts; EPDM 3092M: 40 parts of a mixture; carbon black BC 1031: 160 parts of (B); paraffin oil R-2291: 90 parts of a mixture; calcium carbonate: 50 parts of a mixture; zinc oxide: 6 parts of (1); stearic acid: 2 parts of (1); polyethylene glycol: 2 parts of (1); flow aid L-24: 2 parts of (1); short fiber: 50 parts of a mixture; accelerator M-75: 1.5 parts; accelerator DPTT-70: 0.5 part; accelerator DTDM-80: 0.8 part; accelerator DM-75: 0.5 part; accelerator DCP-80: 0.15; sulfur S-80: 1.2 parts.
The specific production of the door weather strip LIP of this example will be described in the production of the door weather strip of example two.
The door sealing strip LIP of the embodiment is added with the short fibers, and part of the short fibers are exposed by grinding with the grinding wheel after LIP molding and vulcanization, so that a skin-imitated effect can be formed on the appearance surface of the LIP, and the appearance of the door sealing strip LIP can be improved.
Example two
The embodiment relates to a door sealing strip, which is arranged on the edge of a door frame of an automobile body and used for being matched with an automobile door to play a role in sealing the interior of a cockpit, and meanwhile, the door sealing strip is also matched with an automobile interior part, so that the door sealing strip also has a decorative effect on the whole automobile.
Specifically, as shown in fig. 1, as a general structure of the door weather strip of the present embodiment, it includes a main body 1 made of solid rubber having a mounting groove and a skeleton embedded therein, and a sponge tube 2 made of sponge rubber located at one side of the main body 1, and further includes a sealing lip 3 located at the other side of the main body 1 with respect to the sponge tube 2.
The sealing LIP 3, i.e. the door weather strip LIP, is designed to extend to the top of the main body 1, and the sealing LIP 3, i.e. the door weather strip LIP described in the first embodiment, is used, and the surface of the door weather strip LIP where the short fibers are exposed, i.e. the appearance surface of the door weather strip LIP.
This embodiment is through the door sealing strip LIP structure of using in the embodiment one, and the imitative dermatoglyph effect that can its outward appearance face form also, and then improve the outward appearance quality of self.
In addition, when the door sealing strip of the embodiment is manufactured, the specific manufacturing method specifically includes weighing each raw material component to mix, then mixing the rubber material, and respectively mixing the rubber material of the main body 1, the sponge tube 2, the door sealing strip LIP 3, and the door sealing strip LIP 2 in the door sealing strip. Then, the door weather strip was extruded from the rubber compound of the main body 1, the sponge tube 2 and the sealing lip 3 kneaded as above using a rubber screw extruder. And then vulcanizing the extruded door sealing strip by using a microwave hot air vulcanizing furnace, and then polishing the surface of the vulcanized door sealing strip LIP along a single direction by using a grinding wheel so that short fibers are partially exposed on the surface to form the appearance surface of the door sealing strip LIP. And finally, cutting the door sealing strip into sections according to the set size, and cutting to obtain the door sealing strip product.
In the preparation method, the extrusion speed of the sealing strip during extrusion can be 18m/min, five sections of microwave hot air vulcanizing furnaces can be used for vulcanizing during vulcanization, specifically, the first two sections adopt a microwave hot air adding mode, the second three sections adopt a pure hot air mode, and the vulcanizing temperatures of all the sections of the vulcanizing furnaces are 250 ℃, 260 ℃ and 260 ℃ in sequence.
Of course, in the above method for manufacturing the door weather strip, other steps can be optionally added according to the actual product design requirements, for example, spraying can be generally performed after the weather strip is vulcanized so as to increase the wear resistance of the weather strip, and a punching step can be performed after grinding so as to form a plurality of ventilation micropores at the position of the sponge tube 2 of the weather strip.
It should be noted that, in the embodiment, because the door sealing strip of the embodiment mainly relates to the LIP, that is, the improvement of the sealing LIP 3, for the main body 1 and the sponge tube 2 of the sealing strip, when the sealing strip is integrally prepared, the main body 1 is made of a dense adhesive formula commonly used in the field, and the sponge tube 2 is made of a sponge adhesive formula commonly used in the field, and a skilled person can correspondingly select the two formulas according to the actual design requirement of the door sealing strip. The specific formulations of the two will not be illustrated in this example.
In addition, it should be noted that, as a preferred embodiment, the mixing of the door weatherstrip LIP compound of the present embodiment specifically includes the following steps:
s1. mixing, adding EPDM raw rubber, zinc oxide, stearic acid and polyethylene glycol to mix for 60s by using an internal mixer, then adding carbon black, paraffin oil and a flow aid to mix until 105 ℃ and exhausting, adding short fiber while exhausting, then mixing again until 140 ℃ and discharging rubber, tabletting the mixed rubber by using an open mill, and storing the cut pieces after air cooling.
And step S2, two-stage mixing, namely mixing the first-stage mixed rubber for 60s by using an internal mixer, then adding calcium carbonate, an accelerator and sulfur, mixing until the temperature reaches 75 ℃ to discharge rubber, and tabletting and stripping by using an open mill.
The LIP rubber material obtained by the mixing step is co-extruded with the rubber material of the main body 1 and the sponge tube 2 to form the car door sealing strip.
The preparation of the door weather strip of the present embodiment will be further described below in several preparation examples.
Preparation of example 1
In the preparation of the door sealing strip of the embodiment, the main body 1 and the sponge tube 2 in the sealing strip are prepared by adopting a conventional formula in the field, and the sealing lip 3 comprises the following raw materials in parts by weight: EPDM 3110M: 60 parts; EPDM 3092M: 40 parts of a mixture; carbon black BC 1031: 160 parts of (B); paraffin oil R-2291: 90 parts of a mixture; calcium carbonate: 50 parts of a mixture; zinc oxide: 6 parts of (1); stearic acid: 2 parts of (1); polyethylene glycol: 2 parts of (1); flow aid L-24: 2 parts of (1); short fiber: 30 parts of (1); accelerator M-75: 1.5 parts; accelerator DPTT-70: 0.5 part; accelerator DTDM-80: 0.8 part; accelerator DM-75: 0.5 part; accelerator DCP-80: 0.15; sulfur S-80: 1.2 parts.
The compounding of the rubber compound for each constituent part of the door weather strip of this example and the molding of the integrated weather strip can be described with reference to the foregoing production methods.
Preparation of example 2
In the preparation of the door sealing strip of the embodiment, the main body 1 and the sponge tube 2 in the sealing strip are prepared by adopting a conventional formula in the field, and the sealing lip 3 comprises the following raw materials in parts by weight: EPDM 3110M: 60 parts; EPDM 3092M: 40 parts of a mixture; carbon black BC 1031: 160 parts of (B); paraffin oil R-2291: 90 parts of a mixture; calcium carbonate: 50 parts of a mixture; zinc oxide: 6 parts of (1); stearic acid: 2 parts of (1); polyethylene glycol: 2 parts of (1); flow aid L-24: 2 parts of (1); short fiber: 50 parts of a mixture; accelerator M-75: 1.5 parts; accelerator DPTT-70: 0.5 part; accelerator DTDM-80: 0.8 part; accelerator DM-75: 0.5 part; accelerator DCP-80: 0.15; sulfur S-80: 1.2 parts.
The compounding of the rubber compound for each constituent part of the door weather strip of this example and the molding of the integrated weather strip can be described with reference to the foregoing production methods.
Preparation of example 3
In the preparation of the door sealing strip of the embodiment, the main body 1 and the sponge tube 2 in the sealing strip are prepared by adopting a conventional formula in the field, and the sealing lip 3 comprises the following raw materials in parts by weight: EPDM 3110M: 60 parts; EPDM 3092M: 40 parts of a mixture; carbon black BC 1031: 160 parts of (B); paraffin oil R-2291: 90 parts of a mixture; calcium carbonate: 50 parts of a mixture; zinc oxide: 6 parts of (1); stearic acid: 2 parts of (1); polyethylene glycol: 2 parts of (1); flow aid L-24: 2 parts of (1); short fiber: 80 parts of a mixture; accelerator M-75: 1.5 parts; accelerator DPTT-70: 0.5 part; accelerator DTDM-80: 0.8 part; accelerator DM-75: 0.5 part; accelerator DCP-80: 0.15; sulfur S-80: 1.2 parts.
The compounding of the rubber compound for each constituent part of the door weather strip of this example and the molding of the integrated weather strip can be described with reference to the foregoing production methods.
In the three preparation examples, the inventor finds that the sizing material has the leather-like texture effect by adding 30 parts of the short fibers in the example 1, but the leather-like texture effect is not obvious, and the appearance of LIP is not improved sufficiently. In example 2, the amount of the short fibers added was increased to 50 parts, and it was found that the effect of simulating skin lines was more remarkable after polishing, the appearance of LIP was improved well to achieve the desired effect, and a part of the LIP sample prepared according to example 2 is shown in FIG. 2. In example 3, the amount of the short fibers added was further increased to 80 parts, and the inventors found that the rubber Mooney greatly increased due to the increase in the amount of the short fibers, and that the extrusion was difficult in molding the weatherstrip, and that the addition was not suitable for the extrusion production.
Therefore, in the door weather strip of the present embodiment, the preferable addition amount of the short fibers for the LIP thereof is about 50 parts, so that a significant imitation leather effect can be obtained, and the appearance quality of the door weather strip LIP can be improved well.
Finally, the present embodiment also relates to a motor vehicle, in which a door is provided with a door weather strip as described above.
The automobile of this embodiment adopts foretell door sealing strip, and the apparent surface that can utilize door sealing strip LIP forms imitative dermatoglyph effect, and improves door sealing strip LIP's outward appearance nature to indirect can make whole car grade obtain promoting.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A kind of door weather strip LIP, characterized by: the rubber material for preparing the vehicle door sealing strip LIP comprises the following raw materials in parts by weight: EPDM 3110M: 50-90 parts; EPDM 3092M: 10-50 parts; carbon black BC 1031: 150-; paraffin oil R-2291: 70-110 parts; calcium carbonate: 30-70 parts; zinc oxide: 6-10 parts; stearic acid: 1-3 parts; polyethylene glycol: 1-3 parts; flow aid L-24: 1-3 parts; short fiber: 20-80 parts; accelerator (b): 2.3-4.6 parts; sulfur S-80: 1.0-1.4 parts;
the length of the short fibers is 2-6mm, and after the rubber material is extruded, molded and vulcanized, one side surface of the rubber material is polished along a single direction through a grinding wheel, so that the short fibers are partially exposed on the surface.
2. The door weather strip LIP according to claim 1, wherein: the short fiber is PA-66 short fiber.
3. The door weather strip LIP according to claim 1, wherein: the promoter comprises: accelerator M-75: 1.0-2.0 parts; accelerator DPTT-70: 0.3-0.7 part; accelerator DTDM-80: 0.6-1.0 part; accelerator DM-75: 0.3-0.7 part; accelerator DCP-80: 0.1-0.2.
4. The door weather strip LIP according to claim 3, wherein: the rubber material for preparing the vehicle door sealing strip LIP comprises the following raw materials in parts by weight: EPDM 3110M: 60 parts; EPDM 3092M: 40 parts of a mixture; carbon black BC 1031: 160 parts of (B); paraffin oil R-2291: 90 parts of a mixture; calcium carbonate: 50 parts of a mixture; zinc oxide: 6 parts of (1); stearic acid: 2 parts of (1); polyethylene glycol: 2 parts of (1); flow aid L-24: 2 parts of (1); short fiber: 50 parts of a mixture; accelerator M-75: 1.5 parts; accelerator DPTT-70: 0.5 part; accelerator DTDM-80: 0.8 part; accelerator DM-75: 0.5 part; accelerator DCP-80: 0.15; sulfur S-80: 1.2 parts.
5. The utility model provides a door sealing strip, has the mounting groove including what closely knit glue was made, and embedded have main part (1) of skeleton (2), and be located sponge pipe (3) that the sponge rubber of main part (1) one side was made, its characterized in that: further comprising the door weather strip LIP as set forth in any one of claims 1 to 4 on the other side of the body with respect to the sponge tube (3) and extending to the top of the body (1), and the surface of the door weather strip LIP where the short fibers are exposed constitutes an appearance surface of the door weather strip LIP.
6. The method for producing a door weather strip according to claim 5, wherein: the preparation method comprises the following steps:
a. proportioning, namely weighing each raw material component;
b. mixing rubber materials, namely mixing the rubber materials of the main body (1), the sponge tube (3) and the door sealing strip LIP respectively;
c. extruding, by using a rubber screw extruder, a door weatherstrip from the compounded rubber of the body (1), the sponge tube (3) and the door weatherstrip LIP;
d. vulcanizing, namely vulcanizing the extruded vehicle door sealing strip by adopting a microwave hot air vulcanizing furnace;
e. polishing, namely polishing the surface of the door seal LIP in a single direction by using a grinding wheel to expose short fiber parts on the surface to form an appearance surface of the door seal LIP;
f. and cutting, namely cutting and segmenting the vehicle door sealing strip.
7. The method for producing a door weather strip according to claim 6, characterized in that: the rubber mixing of the door sealing strip LIP comprises the following steps:
s1. mixing, adding EPDM raw rubber, zinc oxide, stearic acid and polyethylene glycol to mix for 60s by using an internal mixer, then adding carbon black, paraffin oil and a flow aid to mix until 105 ℃ and exhausting, adding short fiber while exhausting, then mixing again until 140 ℃ and discharging rubber, tabletting the mixed rubber by using an open mill, and storing the cut pieces after air cooling;
and s2, two-stage mixing, namely mixing the first-stage mixed rubber for 60s by using an internal mixer, then adding calcium carbonate, an accelerator and sulfur, mixing to 75 ℃ to discharge rubber, and tabletting and stripping by using an open mill.
8. The method for producing a door weather strip according to claim 6, characterized in that: the extrusion speed in the step c is 18m/min, the five-section microwave hot air vulcanizing furnace is used for vulcanizing in the step d, the first two sections are in a microwave hot air adding mode, the last three sections are in a pure hot air mode, and the vulcanizing temperature of each section is 250 ℃, 260 ℃ and 260 ℃ in sequence.
9. An automobile, characterized in that: a door weather strip according to claim 5 is provided at a door of the automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911204767.5A CN110819127B (en) | 2019-11-29 | 2019-11-29 | Door sealing strip LIP, door sealing strip manufacturing method and automobile |
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Effective date of registration: 20221214 Address after: No. 15-21, Century Avenue, Huaiyuan Economic Development Zone, Bengbu, Anhui 233440 Patentee after: Nobo automobile rubber and plastic (Anhui) Co.,Ltd. Address before: 072550 Chaoyang North Street (Xu) 299, Xushui District, Baoding City, Hebei Province Patentee before: NUOBO RUBBER PRODUCTION CO.,LTD. |