CN108639159B - Engine cover - Google Patents
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- CN108639159B CN108639159B CN201810373955.XA CN201810373955A CN108639159B CN 108639159 B CN108639159 B CN 108639159B CN 201810373955 A CN201810373955 A CN 201810373955A CN 108639159 B CN108639159 B CN 108639159B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
- B62D25/12—Parts or details thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0085—Use of fibrous compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- 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
- C08J9/10—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 developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/26—Porous or cellular plastics
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/08—Cellulose derivatives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/18—Homopolymers or copolymers of tetrafluoroethylene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2463/00—Presence of epoxy resin
Abstract
The invention discloses an engine hood and a preparation method thereof, the engine hood comprises a steel body, two ends of the steel body are bent downwards, two grooves are symmetrically distributed in the middle of the steel body, threaded holes are formed in the grooves, a connecting groove is formed between the grooves, three arc-shaped bulges are correspondingly arranged on the outer sides of the grooves, the tail ends of the arc-shaped bulges extend to the bent parts of the steel body, and damping pastes are attached to the upper end and the lower end of the steel body. This engine bonnet structural strength is high, and the antidetonation is effectual, and the shock attenuation of adoption is pasted long service life, and high temperature resistant effect and corrosion-resistant are effectual.
Description
Technical Field
The invention relates to an engine cover and a preparation method thereof.
Background
The existing engine cover (also called engine hood) is the most striking body component and is one of the parts that the buyer needs to see frequently. The main requirements for the engine cover are heat insulation and sound insulation, light weight and strong rigidity. The engine cover is generally structurally composed of an intermediate heat insulating material and an inner plate which plays a role in enhancing rigidity, and the geometric shape of the engine cover is selected by a manufacturer and is basically in a framework form. When the engine cover is opened, the engine cover is generally turned backwards, and a small part of the engine cover is also turned forwards.
The rearwardly-turned bonnet is opened to a predetermined angle, should not contact the windshield, and should have a minimum spacing of about 10 mm. In order to prevent the self-opening of the automobile caused by vibration during running, the front end of the engine cover is provided with a safety lock hook locking device, a switch of the locking device is arranged below an instrument board of a carriage, and the engine cover is locked when a door is locked.
The engine cover is opened after being disassembled and covered on the automobile body by soft cloth so as to prevent the finish paint from being damaged; detaching the windshield washer nozzle and hose from the engine cover; marking marks on the position of the hinge on the engine cover so as to facilitate later installation; the bonnet and the hinge are fixed by bolts, and the bonnet is prevented from sliding off after the bolts are removed. Mounting and adjusting bonnet
The mounting of the bonnet should be performed in reverse order of the dismounting. Before the engine cover is screwed with the fixing bolt of the hinge, the engine cover is adjusted front and back and left and right, and the upper and lower parts of the engine cover can be adjusted by the hinge gasket and the buffer rubber, so that the gap matching is uniform. Before the engine cover lock is adjusted by the engine cover lock control mechanism, the engine cover needs to be properly corrected, then the fixing bolt is loosened, the lock head moves forwards and backwards and leftwards and rightwards to be aligned with the lock seat, and the front end of the engine cover can also be adjusted through the height of the dovetail bolt of the lock head.
The existing engine hood has low structural strength and poor anti-seismic effect, and the shock absorption paste is not adopted.
Disclosure of Invention
The invention aims to provide the engine hood which is high in structural strength, good in anti-seismic effect, long in service life of the adopted damping paste, and good in high-temperature resistance effect and corrosion resistance effect.
In order to solve the problems, the invention adopts the following technical scheme:
the utility model provides an engine hood, includes the steel body, the steel body both ends are the setting of buckling downwards, the steel body middle part is symmetric distribution and has two recesses, be provided with the screw hole in the recess, be provided with the spread groove between the recess, every the recess outside correspondence is provided with three arc arch, the protruding end of arc extends to the department of buckling of steel body, the laminating of both ends has the shock attenuation subsides about the steel body.
Preferably, the grooves are arranged in a rectangular shape.
Preferably, the groove and the arc-shaped protrusion are formed by stamping.
Preferably, the thickness of the shock absorption paste is 4-8 mm.
The shock absorption paste for the engine hood is prepared from the following materials in parts by mass: 15-22 parts of polytetrafluoroethylene, 7-10 parts of graphite, 9-16 parts of glass fiber, 4-11 parts of silicon dioxide, 6-10 parts of organic arsenic, 9-15 parts of butadiene rubber, 20-24 parts of copper ammonia fiber, 3-8 parts of polyisocyanate, 7-11 parts of vinyl bis-stearamide, 20-22 parts of calcium fluoride, 5-9 parts of ethyl hydrogen-containing silicone oil, 16-18 parts of aluminum powder, 3-9 parts of sodium pyrophosphate, 4-11 parts of guar gum, 13-18 parts of titanate coupling agent, 9-16 parts of polyoxyethylene ether, 20-25 parts of borax, 4-8 parts of potassium chloride and 2-5 parts of azodicarbonamide.
The preparation method of the damping patch comprises the following steps:
1) putting 15-22 parts of polytetrafluoroethylene, 7-10 parts of graphite, 9-16 parts of glass fiber, 4-11 parts of silicon dioxide, 6-10 parts of organic arsenic, 9-15 parts of butadiene rubber, 20-24 parts of copper ammonia fiber, 3-8 parts of polyisocyanate, 7-11 parts of vinyl bis stearamide, 20-22 parts of calcium fluoride, 5-9 parts of ethyl hydrogen silicone oil, 16-18 parts of aluminum powder, 3-9 parts of sodium pyrophosphate, 4-11 parts of Guel rubber, 13-18 parts of titanate coupling agent, 9-16 parts of polyoxyethylene ether, 20-25 parts of borax, 4-8 parts of potassium chloride and 2-5 parts of azodicarbonamide into a reaction kettle, adjusting the heating temperature to 155-160 ℃, the stirring speed to 2250-2800r/min and the reaction time to 3-8 min, standby;
2) putting the raw materials obtained in the step 1) into an internal mixer, and heating the raw materials to be in a molten state for later use;
3) injecting the raw materials obtained in the step 2) into an injection molding machine, adjusting the temperature in the injection molding machine to be 280-320 ℃, and injecting the raw materials into a mold for molding to obtain a blank for later use;
4) polishing the upper surface of the blank obtained in the step 3), and performing frosting treatment on the lower surface of the blank to obtain a damping patch for later use;
5) and (3) attaching the lower surface of the damping patch obtained in the step 4) to the inner side of the steel body through epoxy glue.
The invention has the beneficial effects that: the steel body is high in structural strength, two grooves are symmetrically distributed in the middle of the steel body, a connecting groove is formed between the grooves, three arc-shaped protrusions are correspondingly arranged on the outer side of each groove, so that air inside the steel body circulates, and a good heat dissipation effect is achieved; the shock absorption paste has the advantages that polytetrafluoroethylene, graphite, glass fiber, silicon dioxide, organic arsenic and butadiene rubber have a high-temperature resistant effect, sodium pyrophosphate, guar gum, titanate coupling agent, polyoxyethylene ether, borax, potassium chloride and azodicarbonamide have a good anti-aging function, and the shock absorption paste is guaranteed to be long in service life.
Drawings
Fig. 1 is a structural view of an engine cover according to the present invention.
Detailed Description
The invention is further described below with reference to the following figures and examples.
Example 1
As shown in fig. 1, an engine hood comprises a steel body 1, the two ends of the steel body 1 are bent downwards, two grooves 2 are symmetrically distributed in the middle of the steel body 1, threaded holes 3 are formed in the grooves 2, connecting grooves 4 are formed between the grooves 2, three arc-shaped protrusions 5 are correspondingly arranged on the outer sides of the grooves 2, the tail ends of the arc-shaped protrusions 5 extend to the bent parts of the steel body 1, and damping pastes 6 are attached to the upper end and the lower end of the steel body 1.
The groove 2 is arranged in a rectangular shape.
The groove 2 and the arc-shaped protrusion 5 are formed by punch forming.
The thickness of the shock absorption paste 6 is 4-8 mm.
The shock absorption paste for the engine hood is prepared from the following materials in parts by mass: 15 parts of polytetrafluoroethylene, 7 parts of graphite, 9 parts of glass fiber, 4 parts of silicon dioxide, 6 parts of organic arsenic, 9 parts of butadiene rubber, 20 parts of cuprammonium fiber, 3 parts of polyisocyanate, 7 parts of vinyl bis stearamide, 20 parts of calcium fluoride, 5 parts of ethyl hydrogen silicone oil, 16 parts of aluminum powder, 3 parts of sodium pyrophosphate, 4 parts of guar gum, 13 parts of titanate coupling agent, 9 parts of polyoxyethylene ether, 20 parts of borax, 4 parts of potassium chloride and 2 parts of azodicarbonamide.
The preparation method of the damping patch comprises the following steps:
1) putting 15 parts of polytetrafluoroethylene, 7 parts of graphite, 9 parts of glass fiber, 4 parts of silicon dioxide, 6 parts of organic arsenic, 9 parts of butadiene rubber, 20 parts of cuprammonium fiber, 3 parts of polyisocyanate, 7 parts of vinyl bis stearamide, 20 parts of calcium fluoride, 5 parts of ethyl hydrogen silicone oil, 16 parts of aluminum powder, 3 parts of sodium pyrophosphate, 4 parts of guar gum, 13 parts of titanate coupling agent, 9 parts of polyoxyethylene ether, 20 parts of borax, 4 parts of potassium chloride and 2 parts of azodicarbonamide into a reaction kettle, adjusting the heating temperature to 155-;
2) putting the raw materials obtained in the step 1) into an internal mixer, and heating the raw materials to be in a molten state for later use;
3) injecting the raw materials obtained in the step 2) into an injection molding machine, adjusting the temperature in the injection molding machine to be 280-320 ℃, and injecting the raw materials into a mold for molding to obtain a blank for later use;
4) polishing the upper surface of the blank obtained in the step 3), and performing frosting treatment on the lower surface of the blank to obtain a damping patch for later use;
5) and (3) attaching the lower surface of the damping patch obtained in the step 4) to the inner side of the steel body through epoxy glue.
Example 2
As shown in fig. 1, an engine hood comprises a steel body 1, the two ends of the steel body 1 are bent downwards, two grooves 2 are symmetrically distributed in the middle of the steel body 1, threaded holes 3 are formed in the grooves 2, connecting grooves 4 are formed between the grooves 2, three arc-shaped protrusions 5 are correspondingly arranged on the outer sides of the grooves 2, the tail ends of the arc-shaped protrusions 5 extend to the bent parts of the steel body 1, and damping pastes 6 are attached to the upper end and the lower end of the steel body 1.
The groove 2 is arranged in a rectangular shape.
The groove 2 and the arc-shaped protrusion 5 are formed by punch forming.
The thickness of the shock absorption paste 6 is 4-8 mm.
The shock absorption paste for the engine hood is prepared from the following materials in parts by mass: 18.5 parts of polytetrafluoroethylene, 8.5 parts of graphite, 12.5 parts of glass fiber, 7.5 parts of silicon dioxide, 8 parts of organic arsenic, 12 parts of butadiene rubber, 22 parts of cuprammonia fiber, 5.5 parts of polyisocyanate, 9 parts of vinyl bis-stearamide, 21 parts of calcium fluoride, 7 parts of ethyl hydrogen-containing silicone oil, 17 parts of aluminum powder, 6 parts of sodium pyrophosphate, 7.5 parts of guar gum, 15.5 parts of titanate coupling agent, 12.5 parts of polyoxyethylene ether, 22.5 parts of borax, 6 parts of potassium chloride and 3.5 parts of azodicarbonamide.
The preparation method of the damping patch comprises the following steps:
1) 18.5 parts of polytetrafluoroethylene, 8.5 parts of graphite, 12.5 parts of glass fiber, 7.5 parts of silicon dioxide, 8 parts of organic arsenic, 12 parts of butadiene rubber, 22 parts of cuprammonium fiber, 5.5 parts of polyisocyanate, 9 parts of vinyl bis stearamide, 21 parts of calcium fluoride, 7 parts of ethyl hydrogen-containing silicone oil, 17 parts of aluminum powder, 6 parts of sodium pyrophosphate, 7.5 parts of Guel gum, 15.5 parts of titanate coupling agent, 12.5 parts of polyoxyethylene ether, 22.5 parts of borax, 6 parts of potassium chloride and 3.5 parts of azodicarbonamide are put into a reaction kettle, the heating temperature is adjusted to 155-160 ℃, the stirring speed is 2250-2800r/min, and the reaction time is 3-8 minutes for later use;
2) putting the raw materials obtained in the step 1) into an internal mixer, and heating the raw materials to be in a molten state for later use;
3) injecting the raw materials obtained in the step 2) into an injection molding machine, adjusting the temperature in the injection molding machine to be 280-320 ℃, and injecting the raw materials into a mold for molding to obtain a blank for later use;
4) polishing the upper surface of the blank obtained in the step 3), and performing frosting treatment on the lower surface of the blank to obtain a damping patch for later use;
5) and (3) attaching the lower surface of the damping patch obtained in the step 4) to the inner side of the steel body through epoxy glue.
Example 3
As shown in fig. 1, an engine hood comprises a steel body 1, the two ends of the steel body 1 are bent downwards, two grooves 2 are symmetrically distributed in the middle of the steel body 1, threaded holes 3 are formed in the grooves 2, connecting grooves 4 are formed between the grooves 2, three arc-shaped protrusions 5 are correspondingly arranged on the outer sides of the grooves 2, the tail ends of the arc-shaped protrusions 5 extend to the bent parts of the steel body 1, and damping pastes 6 are attached to the upper end and the lower end of the steel body 1.
The groove 2 is arranged in a rectangular shape.
The groove 2 and the arc-shaped protrusion 5 are formed by punch forming.
The thickness of the shock absorption paste 6 is 4-8 mm.
The shock absorption paste for the engine hood is prepared from the following materials in parts by mass: 22 parts of polytetrafluoroethylene, 10 parts of graphite, 16 parts of glass fiber, 11 parts of silicon dioxide, 10 parts of organic arsenic, 15 parts of butadiene rubber, 24 parts of cuprammonia fiber, 8 parts of polyisocyanate, 11 parts of vinyl bis-stearamide, 22 parts of calcium fluoride, 9 parts of ethyl hydrogen-containing silicone oil, 18 parts of aluminum powder, 9 parts of sodium pyrophosphate, 11 parts of guar gum, 18 parts of titanate coupling agent, 16 parts of polyoxyethylene ether, 25 parts of borax, 8 parts of potassium chloride and 5 parts of azodicarbonamide.
The preparation method of the damping patch comprises the following steps:
1) putting 22 parts of polytetrafluoroethylene, 10 parts of graphite, 16 parts of glass fiber, 11 parts of silicon dioxide, 10 parts of organic arsenic, 15 parts of butadiene rubber, 24 parts of cuprammonium fiber, 8 parts of polyisocyanate, 11 parts of vinyl bis stearamide, 22 parts of calcium fluoride, 9 parts of ethyl hydrogen silicone oil, 18 parts of aluminum powder, 9 parts of sodium pyrophosphate, 11 parts of guar gum, 18 parts of titanate coupling agent, 16 parts of polyoxyethylene ether, 25 parts of borax, 8 parts of potassium chloride and 5 parts of azodicarbonamide into a reaction kettle, adjusting the heating temperature to 155-;
2) putting the raw materials obtained in the step 1) into an internal mixer, and heating the raw materials to be in a molten state for later use;
3) injecting the raw materials obtained in the step 2) into an injection molding machine, adjusting the temperature in the injection molding machine to be 280-320 ℃, and injecting the raw materials into a mold for molding to obtain a blank for later use;
4) polishing the upper surface of the blank obtained in the step 3), and performing frosting treatment on the lower surface of the blank to obtain a damping patch for later use;
5) and (3) attaching the lower surface of the damping patch obtained in the step 4) to the inner side of the steel body through epoxy glue.
Examples of the experiments
Subject: and selecting a common damping patch, a common plastic patch and the damping patch of the invention for test comparison.
The experimental requirements are as follows: the common damping patch, the common plastic patch and the damping patch of the invention are detected by adopting the same thickness and area.
The experimental method comprises the following steps: carrying out anti-aging detection on the damping patch, detecting through a corrosion test box, and adjusting the temperature of the test to be 120 ℃, the relative humidity to be 85%, the air pressure to be 106kPa, the ozone concentration to be 45%, and the ultraviolet illumination intensity to be 25uw/cm2 to obtain the corrosion time; the heat resistance is detected by GB1035-70 to obtain the highest heat-resistant working temperature; the compressive strength is detected by adopting a GBT228-2002 method.
The test data are as follows:
by combining the above table and comparing data obtained by different damping pastes under the same experimental method, the damping paste provided by the invention has the advantages of higher structural strength, better anti-aging effect and higher heat-resisting temperature.
The invention has the beneficial effects that: the steel body is high in structural strength, two grooves are symmetrically distributed in the middle of the steel body, a connecting groove is formed between the grooves, three arc-shaped protrusions are correspondingly arranged on the outer side of each groove, so that air inside the steel body circulates, and a good heat dissipation effect is achieved; the shock absorption paste has the advantages that polytetrafluoroethylene, graphite, glass fiber, silicon dioxide, organic arsenic and butadiene rubber have a high-temperature resistant effect, sodium pyrophosphate, guar gum, titanate coupling agent, polyoxyethylene ether, borax, potassium chloride and azodicarbonamide have a good anti-aging function, and the shock absorption paste is guaranteed to be long in service life.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention.
Claims (1)
1. An engine cover, includes steel body, its characterized in that: the steel body both ends are the downward setting of buckling, the steel body middle part is that the symmetric distribution has two recesses, be provided with the screw hole in the recess, be provided with the spread groove between the recess, every the recess outside corresponds and is provided with three arc arch, the protruding end of arc extends to the department of buckling of steel body, both ends laminating has the shock attenuation subsides about the steel body, the recess is the rectangle setting, recess and arc arch are formed by stamping forming, shock attenuation subsides thickness is 4-8mm, the shock attenuation subsides are made by following material according to the part by mass ratio: 15-22 parts of polytetrafluoroethylene, 7-10 parts of graphite, 9-16 parts of glass fiber, 4-11 parts of silicon dioxide, 6-10 parts of organic arsenic, 9-15 parts of butadiene rubber, 20-24 parts of copper ammonia fiber, 3-8 parts of polyisocyanate, 7-11 parts of vinyl bis stearamide, 20-22 parts of calcium fluoride, 5-9 parts of ethyl hydrogen silicone oil, 16-18 parts of aluminum powder, 3-9 parts of sodium pyrophosphate, 4-11 parts of guar gum, 13-18 parts of titanate coupling agent, 9-16 parts of polyoxyethylene ether, 20-25 parts of borax, 4-8 parts of potassium chloride and 2-5 parts of azodicarbonamide, wherein the preparation method of the damping patch comprises the following steps:
1) putting 15-22 parts of polytetrafluoroethylene, 7-10 parts of graphite, 9-16 parts of glass fiber, 4-11 parts of silicon dioxide, 6-10 parts of organic arsenic, 9-15 parts of butadiene rubber, 20-24 parts of copper ammonia fiber, 3-8 parts of polyisocyanate, 7-11 parts of vinyl bis stearamide, 20-22 parts of calcium fluoride, 5-9 parts of ethyl hydrogen silicone oil, 16-18 parts of aluminum powder, 3-9 parts of sodium pyrophosphate, 4-11 parts of Guel rubber, 13-18 parts of titanate coupling agent, 9-16 parts of polyoxyethylene ether, 20-25 parts of borax, 4-8 parts of potassium chloride and 2-5 parts of azodicarbonamide into a reaction kettle, adjusting the heating temperature to 155-160 ℃, the stirring speed to 2250-2800r/min and the reaction time to 3-8 min, standby;
2) putting the raw materials obtained in the step 1) into an internal mixer, and heating the raw materials to be in a molten state for later use;
3) injecting the raw materials obtained in the step 2) into an injection molding machine, adjusting the temperature in the injection molding machine to be 280-320 ℃, and injecting the raw materials into a mold for molding to obtain a blank for later use;
4) polishing the upper surface of the blank obtained in the step 3), and performing frosting treatment on the lower surface of the blank to obtain a damping patch for later use;
5) and (3) attaching the lower surface of the damping patch obtained in the step 4) to the inner side of the steel body through epoxy glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810373955.XA CN108639159B (en) | 2018-04-24 | 2018-04-24 | Engine cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810373955.XA CN108639159B (en) | 2018-04-24 | 2018-04-24 | Engine cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108639159A CN108639159A (en) | 2018-10-12 |
| CN108639159B true CN108639159B (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810373955.XA Expired - Fee Related CN108639159B (en) | 2018-04-24 | 2018-04-24 | Engine cover |
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| CN106750690A (en) * | 2016-12-05 | 2017-05-31 | 苏州英得福机电科技有限公司 | A kind of yielding rubber material |
| CN206446672U (en) * | 2017-02-20 | 2017-08-29 | 重庆同捷工业设计有限公司 | A kind of car trunk lid mechanism |
| CN206552119U (en) * | 2017-03-22 | 2017-10-13 | 北京现代汽车有限公司 | Bonnet inner panel, hood and vehicle |
| CN206569147U (en) * | 2016-11-23 | 2017-10-20 | 攀枝花学院 | A kind of new automobile hood |
| CN206813115U (en) * | 2017-05-22 | 2017-12-29 | 广州汽车集团股份有限公司 | A kind of hood |
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2018
- 2018-04-24 CN CN201810373955.XA patent/CN108639159B/en not_active Expired - Fee Related
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| JP2009154595A (en) * | 2007-12-25 | 2009-07-16 | Nippon Steel Corp | Automobile hood panel superior in pedestrian protective property |
| CN201784701U (en) * | 2010-08-25 | 2011-04-06 | 浙江吉利汽车研究院有限公司 | Liquid draining structure of engine cover |
| CN103571111A (en) * | 2012-07-22 | 2014-02-12 | 上海利隆化工化纤有限公司 | Polytetrafluoroethylene sealing gasket and preparation method thereof |
| CN203332224U (en) * | 2013-05-27 | 2013-12-11 | 北京汽车股份有限公司 | A hood buffer block installing structure, a hood and an automobile |
| CN206569147U (en) * | 2016-11-23 | 2017-10-20 | 攀枝花学院 | A kind of new automobile hood |
| CN106750690A (en) * | 2016-12-05 | 2017-05-31 | 苏州英得福机电科技有限公司 | A kind of yielding rubber material |
| CN206446672U (en) * | 2017-02-20 | 2017-08-29 | 重庆同捷工业设计有限公司 | A kind of car trunk lid mechanism |
| CN206552119U (en) * | 2017-03-22 | 2017-10-13 | 北京现代汽车有限公司 | Bonnet inner panel, hood and vehicle |
| CN206813115U (en) * | 2017-05-22 | 2017-12-29 | 广州汽车集团股份有限公司 | A kind of hood |
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| Publication number | Publication date |
|---|---|
| CN108639159A (en) | 2018-10-12 |
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