CN114183490A - Air spring air bag and preparation method and application thereof - Google Patents
Air spring air bag and preparation method and application thereof Download PDFInfo
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- CN114183490A CN114183490A CN202111482654.9A CN202111482654A CN114183490A CN 114183490 A CN114183490 A CN 114183490A CN 202111482654 A CN202111482654 A CN 202111482654A CN 114183490 A CN114183490 A CN 114183490A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D22/00—Producing hollow articles
- B29D22/02—Inflatable articles
- B29D22/023—Air springs; Air bellows
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
The invention relates to an air spring airbag and a preparation method and application thereof, wherein the air spring airbag comprises an airbag elastic body inner layer, at least one airbag reinforcing layer and an airbag elastic body outer layer from inside to outside; the material of the inner layer and the outer layer of the air bag elastomer is thermoplastic polyester elastomer with Shore D hardness of 50-70. The air spring air bag can adopt a continuous production process, and the method is simple and easy to operate, has long service life, and has excellent service performance and processing performance.
Description
Technical Field
The invention relates to the technical field of air bags, in particular to an air spring air bag and a preparation method and application thereof.
Background
With the rapid development of the automobile industry and the continuous improvement of the living standard of people, the requirement on the NVH performance of the automobile is increasingly improved, and the automobile vibration reduction technology is also greatly developed. At present, high-end passenger vehicles at home and abroad gradually adopt air springs to replace spiral springs and hydraulic shock absorbers. The passenger car adopts the air spring, can improve riding comfort, control stationarity, security and realize the lightweight. The rigidity of the air spring is variable, high-frequency vibration can be filtered, the smoothness of the whole vehicle is improved, and the comfort level of drivers and passengers is increased. The air spring can change rigid impact into flexible impact, so that the driving control stability is improved, and the driving safety is further improved. The air spring mainly comprises an air bag and air, can reduce weight by more than 50% compared with a spiral spring, and can effectively reduce the mass of a suspension.
CN101137714B discloses a polyurethane elastomer having excellent flexural elasticity and durability and having a flexural elasticity of 2500 to 4600kgf/cm2A polyetherester thermoplastic elastomer resin composition comprising 10 to 70% by weight of a low-hardness polyetherester block copolymer having a shore hardness of not more than 40D, 15 to 55% by weight of a high-hardness polyetherester block copolymer having a shore hardness of not less than 50D, and 15 to 35% by weight of polybutylene terephthalate. The polyetherester thermoplastic elastomer resin composition disclosed therein is excellent in durability, workability, formability and scratch resistance, and satisfactory flexibility and mechanical properties, particularly flexural elasticity. In addition, the polyetherester thermoplastic elastomer resin composition disclosed therein has advantages such as excellent scattering property and horn workability when it is used for manufacturing a cover for an airbag of an automobile.
CN112358667A discloses a rubber composition, a preparation method and an application thereof, wherein the rubber composition comprises the following components in parts by weight: 80-99 parts of mercaptan-regulated chloroprene rubber, 9-11 parts of a vulcanizing agent, 19-36 parts of a reinforcing agent, 15-25 parts of a softening agent, 3-5 parts of a primary anti-aging agent and 2-4 parts of an auxiliary anti-aging agent; the rubber composition is prepared by selecting mercaptan-regulated chloroprene rubber and matching a main anti-aging agent and an auxiliary anti-aging agent, so that the rubber composition has excellent mechanical property and wear resistance and also has excellent aging property within a specific addition range, and can meet the requirements of high reliability and long service life of long-term use of an air spring air bag of a passenger car.
The most important part in the air spring assembly is the air bag, the air bag is generally made of rubber at present, the problems of short service life, easy aging, poor fatigue performance and the like exist, rubber needs the working procedures of mixing, vulcanizing and the like, the process difficulty is high, the working procedures are complex, the production period is long, the efficiency is low, and the cost is high. The rubber strength is low, the large-caliber thin-wall air bag is difficult to extrude and mold, the rubber and the reinforced cord fabric are rolled into the adhesive fabric, then the adhesive fabric is wound and molded, the molding is difficult, the product precision is low, the processing difficulty is high, the automatic production is difficult to realize, the wall thickness uniformity and the molding consistency of the air bag are difficult to ensure, and the product quality is difficult to control.
In view of the above, it is important to develop an air spring airbag that can be mass-produced, is inexpensive, and has excellent performance.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an air spring airbag, and a preparation method and application thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides an air spring bellows, which comprises, from inside to outside, a bellows elastomer inner layer, at least one bellows reinforcement layer, and a bellows elastomer outer layer;
the material of the inner layer and the outer layer of the balloon elastomer is thermoplastic polyester elastomer with Shore D hardness of 50-70 (such as 55, 60, 65, etc.).
The air spring air bag disclosed by the invention consists of a thermoplastic elastomer and a reinforcing layer, the Shore D hardness is 50-70, the air spring air bag is suitable for thin-wall extrusion molding, the formed air spring air bag has good mechanical properties, excellent high and low temperature resistance and aging resistance, long-term use fatigue durability and good appearance quality.
Preferably, the outer diameter of the air spring bellows is 80-120mm, such as 90mm, 100mm, 110mm, etc.
Preferably, the wall thickness of the air spring bellows is 2-3mm, such as 2.2mm, 2.4mm, 2.6mm, 2.8mm, etc.
Preferably, the thickness of the elastomeric inner layer of the balloon is 1.0-1.5mm, e.g., 1.1mm, 1.2mm, 1.3mm, 1.4mm, etc.
Preferably, the balloon reinforcement layer is a reinforcing cord.
Preferably, the reinforcing cords are 1-2 layers, e.g. 1 layer, e.g. 2 layers.
Preferably, the reinforcing cords comprise polyester cords and/or polyamide cords.
Preferably, the reinforcing cords have a diameter of 0.3 to 0.6mm, such as 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, and the like.
Preferably, the outer layer of the balloon elastomer has a thickness of 0.3-1.0mm, such as 0.4mm, 0.6mm, 0.8mm, etc.
In a second aspect, the present invention provides a method for manufacturing an air spring air bag according to the first aspect, the method comprising the steps of:
step 1: carrying out extrusion molding on the thermoplastic polyester elastomer to form an inner layer of the air bag elastomer;
step 2: arranging an air bag reinforcing layer on the surface of the inner layer of the air bag elastic body;
and step 3: and extruding and molding the thermoplastic polyester elastomer on the surface of the air bag reinforcing layer to form an outer layer of the air bag elastomer, so as to obtain the air spring air bag.
The air spring air bag is formed by adopting a continuous extrusion process instead of a rubber material through a thermoplastic polyester elastomer, complex processes such as mixing, calendering, single air bag forming, vulcanization and the like are not needed, the production efficiency is high, the energy consumption is reduced, continuous automatic production is realized, the product consistency is good, the quality is stable, and the production cost is low.
Preferably, step 1 further comprises drying the thermoplastic polyester elastomer before the extrusion molding.
Preferably, in step 1, the extrusion temperature of the extrusion molding is 205-.
Preferably, in step 2, the manner of disposing the balloon reinforcement layer is: the reinforcing cord is dipped by the adhesive, and then the reinforcing cord is wound on the inner layer surface of the air bag elastomer in a single layer or double layers to form the air bag reinforcing layer.
Preferably, in step 3, the extrusion temperature of the extrusion molding is 205-.
Preferably, the forming of the outer layer of the balloon elastomer further comprises cooling and cutting.
In a third aspect, the present invention provides a use of an air spring bellows according to the first aspect in an automobile.
Compared with the prior art, the invention has the following beneficial effects:
the air spring air bag can adopt a continuous production process, and the method is simple and easy to operate, has long service life, and has excellent service performance and processing performance. The service life of the air spring air bag rack is more than 2190 ten thousand times, the bursting strength can reach more than 3.05MPa, and the air spring air bag rack can be used for a long time at the temperature of between 40 ℃ below zero and 120 ℃.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
The present embodiment provides an air spring bellows, which comprises, from inside to outside, a bellows elastomer inner layer, a single-layer bellows reinforcement layer, and a bellows elastomer outer layer.
The outer diameter of the air spring air bag is 90mm, and the length of the air spring air bag is 400 mm.
The inner layer and the outer layer of the air bag elastomer are both made of thermoplastic polyester elastomer with Shore D hardness of 60, and are purchased from DuPont company under the trade name of Hytrel HTR 8241.
The thickness of the inner layer of the air bag elastic body is 1.0mm, and the thickness of the outer layer of the air bag elastic body is 0.5 mm.
The air bag reinforcing layer is a reinforcing cord (polyester cord, purchased from Suzhou limited, east Asian industry, with a specification of 1000D/2), is subjected to dipping treatment by an adhesive RFL dipping solution, has a diameter of 0.5mm, and is formed by single-layer winding.
The preparation method of the air spring air bag comprises the following steps:
(1) drying the thermoplastic polyester elastomer in a dehumidifying drying oven at 110 ℃ for 4 h;
(2) carrying out extrusion molding on the dried thermoplastic polyester elastomer, wherein the specific process parameters are as follows: extruding at 220 deg.C, screw rotating speed of 60rpm, and traction speed of 10m/min to form inner layer of air bag elastomer;
(3) winding a reinforcing thread rope on the surface of the inner layer of the air bag elastomer in a single layer at a winding angle of 90 degrees relative to the extrusion direction to form an air bag reinforcing layer;
(4) the thermoplastic polyester elastomer is extruded and molded on the surface of the air bag reinforced layer, and the specific process parameters are as follows: extruding at 220 deg.c, screw rotation speed of 70rpm and drawing speed of 10m/min to form the outer layer of the elastic body;
(5) and (4) cooling the product obtained in the step (4), cutting, drying and packaging to obtain the air spring airbag.
Example 2
The present embodiment provides an air spring bellows, which comprises, from inside to outside, a bellows elastomer inner layer, a single-layer bellows reinforcement layer, and a bellows elastomer outer layer.
The outer diameter of the air spring air bag is 94mm, and the length of the air spring air bag is 400 mm.
The inner layer and the outer layer of the air bag elastomer are both made of thermoplastic polyester elastomer with Shore D hardness of 54, and are purchased from Dismann corporation under the trademark EM 550.
The thickness of the inner layer of the air bag elastic body is 1.2mm, and the thickness of the outer layer of the air bag elastic body is 0.5 mm.
The air bag reinforcing layer is made of reinforcing thread ropes (nylon 66, available from Neuma industries, Ltd., specification of 930dtex/2), is subjected to impregnation treatment by an adhesive RFL impregnation liquid, has a diameter of 0.35mm, and is formed by double-layer winding.
The preparation method of the air spring air bag comprises the following steps:
(1) drying the thermoplastic polyester elastomer in a dehumidifying drying oven at 110 ℃ for 6 h;
(2) carrying out extrusion molding on the dried thermoplastic polyester elastomer, wherein the specific process parameters are as follows: the extrusion temperature is 205 ℃, the screw rotation speed is 15rpm, and the traction speed is 5m/min, so that an inner layer of the air bag elastomer is formed;
(3) forming by double-layer winding, wherein a first layer of cord thread is wound on the surface of the inner layer of the air bag elastomer at a winding angle of 40 degrees relative to the extrusion direction, a second layer of cord thread is wound on the surface of the inner layer of the air bag elastomer at a winding angle of-40 degrees relative to the extrusion direction to form an air bag double-layer cord thread reinforcing layer, and the included angle of the double-layer cord thread is 80 degrees;
(4) the thermoplastic polyester elastomer is extruded and molded on the surface of the air bag reinforced layer, and the specific process parameters are as follows: the extrusion temperature is 205 ℃, the screw rotation speed is 20rpm, and the traction speed is 5m/min, so as to form an outer layer of the air bag elastomer;
(5) and (4) cooling the product obtained in the step (4), cutting, drying and packaging to obtain the air spring airbag.
Example 3
The present embodiment provides an air spring bellows, which comprises, from inside to outside, a bellows elastomer inner layer, a single-layer bellows reinforcement layer, and a bellows elastomer outer layer.
The outer diameter of the air spring air bag is 120mm, and the length of the air spring air bag is 400 mm.
The inner layer and the outer layer of the air bag elastomer are both made of thermoplastic polyester elastomer with Shore D hardness of 60, and are purchased from DuPont company under the trade name of Hytrel HTR 8241.
The thickness of the inner layer of the air bag elastic body is 1.1mm, and the thickness of the outer layer of the air bag elastic body is 0.6 mm.
The air bag reinforcing layer is made of reinforcing thread ropes (nylon 66, available from Neuma industries, Ltd., specification of 930dtex/2), is subjected to impregnation treatment by an adhesive RFL impregnation liquid, has a diameter of 0.4mm, and is formed by single-layer winding.
The preparation method of the air spring air bag comprises the following steps:
(1) drying the thermoplastic polyester elastomer in a dehumidifying drying oven at 110 ℃ for 4 h;
(2) carrying out extrusion molding on the dried thermoplastic polyester elastomer, wherein the specific process parameters are as follows: the extrusion temperature is 245 ℃, the rotating speed of a screw is 80rpm, and the traction speed is 15m/min, so that an inner layer of the air bag elastomer is formed;
(3) winding a reinforcing thread rope on the surface of the inner layer of the air bag elastomer in a single layer at a winding angle of 90 degrees relative to the extrusion direction to form an air bag reinforcing layer;
(4) the thermoplastic polyester elastomer is extruded and molded on the surface of the air bag reinforced layer, and the specific process parameters are as follows: the extrusion temperature is 245 ℃, the rotating speed of the screw is 90rpm, and the traction speed is 20m/min, so as to form an outer layer of the air bag elastomer;
(5) and (4) cooling the product obtained in the step (4), cutting, drying and packaging to obtain the air spring airbag.
Examples 4 to 7
Examples 4 to 7 are different from example 2 in that the thicknesses of the elastic inner layers of the balloons were 1.0mm (example 4), 1.5mm (example 5), 0.8mm (example 6), 1.8mm (example 7), etc., respectively, and the rest was the same as example 1.
Examples 8 to 11
Examples 8 to 11 are different from example 2 in that the thicknesses of the outer layers of the elastic bodies of the balloons were 0.3mm (example 8), 1.0mm (example 9), 0.2mm (example 10), 1.2mm (example 11), etc., respectively, and the rest was the same as example 1.
Examples 12 to 15
Examples 12 to 15 are different from example 2 in that the reinforcing cords have diameters of 0.3mm (example 12), 0.6mm (example 13), 0.2mm (example 14), 0.8mm (example 15) and the like, respectively, and the rest is the same as example 1.
Comparative example 1
The inner rubber layer and the outer rubber layer of the comparison example adopt a mixed rubber formula of natural rubber and chloroprene rubber, the air bag reinforcing layer is a reinforcing cord (nylon 66, purchased from the stock company of the Ach-Med, with the specification of 930dtex/2), the diameter of the air bag reinforcing layer is 0.35mm after the dipping treatment of an adhesive RFL dipping solution, the air bag reinforcing layer is formed by double-layer winding, wherein a first layer of cord is wound on the surface of the inner layer of the air bag elastomer at a winding angle of 40 degrees relative to the extrusion direction, a second layer of cord is wound on the surface of the inner layer of the air bag elastomer at a winding angle of-40 degrees relative to the extrusion direction to form an air bag double-layer cord reinforcing layer, and the included angle of the double-layer cord is 80 degrees.
Performance testing
The air spring bladders described in examples 1-15 and comparative example 1 were tested as follows:
(1) and (3) blasting strength: injecting water with the temperature of (20 +/-2) DEG C into the air spring at the pressurizing rate of 0.5MPa/min under the assembly condition of the air spring air bag until the air spring is damaged, and recording the maximum pressure value (namely the blasting pressure) before the air spring is damaged;
(2) high-temperature vertical fatigue durability: assembling the air spring airbag according to the actual use state, loading the air spring airbag into a high-temperature test box for a reciprocating cycle test, wherein the test temperature is 80 ℃, the test frequency is 3Hz, the test amplitude is 25mm (the stroke is 50mm), and recording the test times when cracks appear for the first time.
The test results are summarized in table 1.
TABLE 1
| Burst strength (MPa) | High temperature vertical fatigue durability (for ten thousand times) | |
| Example 1 | 3.05 | 2500 |
| Example 2 | 3.89 | 2700 |
| Example 3 | 3.12 | 2200 |
| Example 4 | 3.78 | 2600 |
| Example 5 | 3.94 | 2700 |
| Example 6 | 3.59 | 2350 |
| Example 7 | 3.41 | 2480 |
| Example 8 | 3.65 | 2500 |
| Example 9 | 3.69 | 2580 |
| Example 10 | 3.32 | 2190 |
| Example 11 | 3.43 | 2240 |
| Example 12 | 3.76 | 2780 |
| Example 13 | 3.69 | 2810 |
| Example 14 | 3.34 | 2300 |
| Example 15 | 3.45 | 2350 |
| Comparative example 1 | 2.8 | 1000 |
The data in the table 1 are analyzed, so that in each embodiment, the service life of the air spring air bag rack is more than 2190 ten thousand times, the bursting strength can reach more than 3.05MPa, and the air spring air bag rack can be used for a long time at the temperature of minus 40-120 ℃.
Analysis of comparative example 1 and example 2 revealed that comparative example 1 was inferior in performance to example 2, demonstrating that the air spring bellows formed using a thermoplastic elastomer performed better.
Analysis of examples 4-7 reveals that examples 6-7 do not perform as well as examples 4-5, demonstrating that air spring bellows performance is better with an inner layer of the bladder elastomer having a thickness in the range of 1.0-1.5 mm.
Analysis of examples 8-11 reveals that examples 10-11 do not perform as well as examples 8-9, demonstrating that air spring bellows performance is better with an outer layer of the bellows elastomer having a thickness in the range of 0.3-1.0 mm.
Analysis of examples 12-15 reveals that examples 14-15 do not perform as well as examples 12-13, demonstrating that air spring bellows having reinforcing cords with diameters in the range of 0.3-0.6mm perform better.
The present invention is illustrated in detail by the examples described above, but the present invention is not limited to the details described above, i.e., it is not intended that the present invention be implemented by relying on the details described above. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. An air spring airbag is characterized by comprising an airbag elastic body inner layer, at least one airbag reinforcing layer and an airbag elastic body outer layer from inside to outside;
the material of the inner layer and the outer layer of the air bag elastomer is thermoplastic polyester elastomer with Shore D hardness of 50-70.
2. Air spring bellows according to claim 1, wherein the outer diameter of the air spring bellows is 80-120 mm.
3. Air spring bellows according to claim 1 or 2, characterized in that the wall thickness of the air spring bellows is 2-3 mm.
4. Air spring bellows according to any one of claims 1 to 3, wherein the thickness of the inner layer of the elastomer of the bellows is 1.0 to 1.5 mm.
5. Air spring bellows according to any one of claims 1 to 4, wherein the bladder reinforcing layer is a reinforcing cord.
6. Air spring bellows according to any one of claims 1 to 5, wherein the reinforcing cord is 1-2 layers;
preferably, the reinforcing cords comprise polyester cords and/or polyamide cords;
preferably, the reinforcing cords have a diameter of 0.3 to 0.6 mm.
7. Air spring bellows according to any one of claims 1 to 6, wherein the thickness of the outer layer of the bellows elastomer is 0.3 to 1.0 mm.
8. A method of manufacturing an air spring bellows according to any one of claims 1 to 7, characterized in that it comprises the steps of:
step 1: carrying out extrusion molding on the thermoplastic polyester elastomer to form an inner layer of the air bag elastomer;
step 2: arranging an air bag reinforcing layer on the surface of the inner layer of the air bag elastic body;
and step 3: and extruding and molding the thermoplastic polyester elastomer on the surface of the air bag reinforcing layer to form an outer layer of the air bag elastomer, so as to obtain the air spring air bag.
9. The method according to claim 8, wherein the step 1 further comprises drying the thermoplastic polyester elastomer before the extrusion molding;
preferably, in the step 1, the extrusion temperature of the extrusion molding is 205-245 ℃, the screw rotation speed is 15-80rpm, and the traction speed is 5-15 m/min;
preferably, in step 2, the manner of disposing the balloon reinforcement layer is: firstly, dipping the reinforcing cord by using an adhesive, and then winding the reinforcing cord on the inner layer surface of the air bag elastomer in a single layer or double layers to form an air bag reinforcing layer;
preferably, in the step 3, the extrusion temperature of the extrusion molding is 205-245 ℃, the screw rotation speed is 20-90rpm, and the traction speed is 5-20 m/min;
preferably, the forming of the outer layer of the balloon elastomer further comprises cooling and cutting.
10. Use of an air spring bellows according to any one of claims 1 to 7 in a motor vehicle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111482654.9A CN114183490A (en) | 2021-12-07 | 2021-12-07 | Air spring air bag and preparation method and application thereof |
| PCT/CN2022/136064 WO2023103892A1 (en) | 2021-12-07 | 2022-12-02 | Air spring airbag and preparation method therefor and application thereof |
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| CN202111482654.9A CN114183490A (en) | 2021-12-07 | 2021-12-07 | Air spring air bag and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023103892A1 (en) * | 2021-12-07 | 2023-06-15 | 中国第一汽车股份有限公司 | Air spring airbag and preparation method therefor and application thereof |
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| DE102012023616B4 (en) * | 2012-12-04 | 2019-06-19 | Carl Freudenberg Kg | warehouse |
| CN111059366A (en) * | 2018-10-16 | 2020-04-24 | 湖南易净环保科技有限公司 | Continuous fiber reinforced thermoplastic pipeline and production method thereof |
| CN110159695B (en) * | 2019-05-17 | 2020-12-22 | 中国人民解放军海军工程大学 | Cord integrated winding reinforced rubber air spring |
| CN114183490A (en) * | 2021-12-07 | 2022-03-15 | 中国第一汽车股份有限公司 | Air spring air bag and preparation method and application thereof |
-
2021
- 2021-12-07 CN CN202111482654.9A patent/CN114183490A/en active Pending
-
2022
- 2022-12-02 WO PCT/CN2022/136064 patent/WO2023103892A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1505741A (en) * | 2001-04-27 | 2004-06-16 | �����ؿ˿�������ϵͳ�������ι�˾ | Pneumatic bellow |
| CN108026999A (en) * | 2015-09-17 | 2018-05-11 | 康蒂泰克空气弹簧系统有限公司 | Product, especially air-spring bellows, metal to rubber element or damper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023103892A1 (en) * | 2021-12-07 | 2023-06-15 | 中国第一汽车股份有限公司 | Air spring airbag and preparation method therefor and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023103892A1 (en) | 2023-06-15 |
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