CN105257922A - Low-permeability automobile air conditioner hose and manufacturing method thereof - Google Patents
Low-permeability automobile air conditioner hose and manufacturing method thereof Download PDFInfo
- Publication number
- CN105257922A CN105257922A CN201510737817.1A CN201510737817A CN105257922A CN 105257922 A CN105257922 A CN 105257922A CN 201510737817 A CN201510737817 A CN 201510737817A CN 105257922 A CN105257922 A CN 105257922A
- Authority
- CN
- China
- Prior art keywords
- layer
- air conditioning
- automotive air
- conditioning hose
- hyposmosis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/049—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using steam or damp
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/005—Hoses, i.e. flexible
Abstract
The invention belongs to the technical field of air conditioner hoses, and relates to a low-permeability automobile air conditioner hose and a manufacturing method thereof. The low-permeability automobile air conditioner hose sequentially comprises a shielding layer, a middle rubber layer, a reinforcement layer and an outer rubber layer from inside to outside. The shielding layer comprises an inner polyamide layer, an ethylene/EVOH layer and an outer polyamide layer from inside to outside. The air conditioner hose totally comprises six layers. According to the air conditioner hose, a polyamide-EVOH-polyamide composite permeation-proof layer and a rubber permeation-proof layer are adopted, the high temperature resistance and permeation resistance of the air conditioner hose are improved, and especially the excellent high temperature resistance and resistance to refrigerant R34a and 1234YF permeation are achieved; the layers of the hose are good in bonding performance, and the hose is stable in structure; and the reinforcement layer and the outer rubber layer are adopted, so that the rubber hose can resist to high temperature of 150 DEG C, duration time is 168 hours, and high pressure of 15 MPa can be resisted.
Description
Technical field
The invention belongs to air conditioning hose technical field, specifically, relate to a kind of high temperature resistant, high pressure resistant and automotive air conditioning hose of hyposmosis and preparation method thereof.
Background technique
Along with the develop rapidly of automobile industry, the environmental consciousness of people is also more and more stronger, original R134A air conditioner rubber pipe can not meet the requirement of automotive performance and environmental protection, and within 2017, the universal new refrigeration agent 1234YF that takes the lead in is substituted R134A by America and Europe, and Germany also will adopt CO2 refrigerant replacement R134A.China also will require in the coming years to adopt new refrigerant 1234YF, and standard in succession has both increased the index of new cooling media at present.
The air conditioning hose structure of existing transmission refrigeration agent generally includes screen layer, inner glue layer, braid, outer glue-line four-layer structure or inner glue layer, screen layer, mesoglea, braid, outer glue-line five structure.But, the no matter air conditioning hose of which kind of structure, the general material such as nylon and rubber that all only adopts is formed, thus the refrigerant R134a/PAG mixed solution infiltration capacity causing environment friendly refrigerating fluid such as refrigeration agent 1234YF using now is large, and high-temperature-resistant high-pressure-resistant is poor, the demand of actual use cannot be met.
Summary of the invention
The object of the invention is to overcome the shortcoming that prior art exists, seek a kind of high temperature resistant, high pressure resistant and automotive air conditioning hose of hyposmosis and preparation method thereof of design.
To achieve these goals, the technical solution used in the present invention is: a kind of hyposmosis automotive air conditioning hose, comprises screen layer, mesoglea, enhancement layer and outer glue-line from inside to outside successively; Described screen layer comprises interior aramid layer, ethylene/vinyl alcohol copolymer (EVOH) layer and outer aramid layer from inside to outside, and described automotive air conditioning hose comprises 6 layers altogether;
Preferably, the interior aramid layer of described screen layer and outer aramid layer are polyamide 6;
Preferably, described mesoglea is butyl rubber;
Preferably, described enhancement layer is polyester PET, i.e. PETG;
Preferably, described outer glue-line is ethylene propylene diene rubber;
Preferably, the caliber of described automotive air conditioning hose is 15mm ~ 40mm, the thickness of screen layer is 0.24 ~ 0.3mm, and the thickness of interior aramid layer, ethylene/vinyl alcohol copolymer (EVOH) layer and outer aramid layer is respectively 0.08 ~ 0.1mm, and the thickness of mesoglea is 0.5 ~ 1mm; The thickness of outer glue-line is 1.5 ~ 2mm.
Polyamide/EVOH/polyamide alloy screen layer is positioned at the inner side of automotive air conditioning hose, in the process of transmission refrigeration agent, directly and refrigerant contact, three layers of composite of polyamide/EVOH/polyamide screen layer have the characteristic of the high temperature resistant PAG of resistance to refrigerant oil, can promote resistance to high temperature and the oil resistance of automotive air conditioning hose.
Mesoglea is rubber impermeable layer, be positioned at the outside of polyamide/EVOH/polyamide screen layer, rubber impermeable layer coordinates adhesive power high with the outermost polyamide 6 of screen layer, make sebific duct have the high adhesiveness of glue and lower permeability, the osmotic-pressure-tolerant of automotive air conditioning hose to refrigeration agent can be promoted.
The material of enhancement layer is polyesters braided material, be positioned at the outside of rubber impermeable layer, enhancement layer can adopt one or more layers braiding structure, and enhancement layer significantly can strengthen rigidity and the withstand voltage properties of automotive air conditioning hose, thus promotes the high voltage performance of automotive air conditioning hose.
Outer glue-line is ethylene-propylene-diene monomer compound protective layer, has excellent resistance to weather, resistance to ozone, heat-resisting, acid resistant alkali, resistance to water vapor, colour stability, electrical property, oil-filled property and normal temperature mobility.Ethylene propylene rubber goods can Long-Time Service at 135 DEG C, can of short duration or interval use at 170-200 DEG C, adds suitable age resister and peroxide crosslinking can improve its serviceability temperature, and can use under severe conditions.Ethylene propylene diene rubber, under the condition of ozone concentration 50pphm, stretching 30%, can reach more than 150h and not chap.Outer glue-line is positioned at the outside of enhancement layer.
The present invention also provides a kind of making method of hyposmosis automotive air conditioning hose, and it comprises the following steps:
Step 1: extrude screen layer, by polyamide, ethylene/vinyl alcohol copolymer layer and polyamide by extruder three layers of co-extrusion;
Step 2: form mesoglea, join in extruder by butyl rubber rubber, extrude sizing material on the shielding layer coated;
Step 3: use knitting machine to weave last layer polyester PET yarn on mesoglea, form pipe embryo;
Step 4: use Rubber Extruder to extrude ethylene propylene diene rubber, be coated on pipe embryo, form flexible pipe embryo;
Step 5: carry out baking to flexible pipe embryo, is placed in sulfurizing pot by flexible pipe embryo, take saturated vapour as heat transfer medium, carries out heating press vulcanization, and saturation vapour pressure is 0.5 ~ 0.65MPa, and sulfurize temperature is 150 DEG C ~ 165 DEG C; Hyposmosis automotive air conditioning hose is obtained after the flexible pipe hard-off core of hot-press vulcanization.
The invention has the beneficial effects as follows: air conditioning hose is by adopting polyamide/EVOH/polyamide composite anti-penetrating permeable layers and rubber impermeable layer, improve heat-resisting quantity and the osmotic-pressure-tolerant of air conditioning hose, particularly there is the performance that excellent high temperature resistant, the R34a of resistance to refrigeration agent, 1234YF permeate.Between each layer of flexible pipe, adhesive property is good, and hose construction is stablized; By adopting reinforced layer and outer glue-line, make sebific duct of the present invention can resistance to 150 DEG C of high temperature, 168 hours endurance can high pressure resistantly be 15MPa.
Embodiment
Below by concrete enforcement, the invention will be further described:
Embodiment 1
The hyposmosis automotive air conditioning hose of the present embodiment, comprises screen layer, mesoglea, enhancement layer and outer glue-line from inside to outside successively; Described screen layer comprises interior aramid layer, ethylene/vinyl alcohol copolymer (EVOH) layer and outer aramid layer from inside to outside, and described automotive air conditioning hose comprises 6 layers altogether;
In screen layer, aramid layer and outer aramid layer are polyamide 6; Mesoglea is butyl rubber; Enhancement layer is polyester PET; Outer glue-line is ethylene propylene diene rubber;
The caliber of automotive air conditioning hose is 15mm, and the thickness of polyamide/EVOH/polyamide screen layer is 0.24mm, and the thickness of mesoglea is 0.5mm; The thickness of outer glue-line is 1.5mm.
The present invention also provides a kind of making method of hyposmosis automotive air conditioning hose, and it comprises the following steps:
Step 1: extrude screen layer, passes through the common head of three extruders one, the co-extrusion while of three layers by polyamide 6, ethylene/vinyl alcohol copolymer layer and polyamide 6;
Step 2: form mesoglea, join in extruder by butyl rubber rubber, extrude sizing material on the shielding layer coated;
Step 3: use knitting machine to weave last layer polyester PET yarn on mesoglea, form pipe embryo;
Step 4: use Rubber Extruder to extrude ethylene propylene diene rubber, be coated on pipe embryo, form flexible pipe embryo;
Step 5: carry out hot-press vulcanization to flexible pipe embryo, is placed in sulfurizing pot by flexible pipe embryo, take saturated vapour as heat transfer medium, carries out heating press vulcanization, and saturation vapour pressure is 0.5 ~ 0.65MPa, and sulfurize temperature is 150 DEG C ~ 165 DEG C; Hyposmosis automotive air conditioning hose is obtained after the flexible pipe base hard-off core of hot-press vulcanization.
Embodiment 2
The hyposmosis automotive air conditioning hose of the present embodiment, divided by the outer the other the same as in Example 1 of lower difference:
The caliber of automotive air conditioning hose is: 40mm, and the thickness of polyamide/EVOH/polyamide screen layer is 0.3mm, and the thickness of mesoglea is 1mm; The thickness of outer glue-line is 2mm.
Automotive air conditioning hose of the present invention, by adopting polyamide and EVOH alloy screen layer and rubber impermeable layer, improves osmotic-pressure-tolerant energy and the aging quality of air-conditioner pipe.Aging and penetrability is as table 1.
Aging and the penetrability table of table 1 air conditioning hose
Claims (7)
1. a hyposmosis automotive air conditioning hose, comprises screen layer, mesoglea, enhancement layer and outer glue-line from inside to outside successively; It is characterized in that: described screen layer comprises interior aramid layer, ethylene/vinyl alcohol copolymer layer and outer aramid layer from inside to outside, and described automotive air conditioning hose comprises 6 layers altogether.
2. hyposmosis automotive air conditioning hose according to claim 1, is characterized in that: the interior aramid layer of described screen layer and outer aramid layer are polyamide 6.
3. hyposmosis automotive air conditioning hose according to claim 1, is characterized in that: described mesoglea is butyl rubber.
4. hyposmosis automotive air conditioning hose according to claim 1, is characterized in that: described enhancement layer is polyester PET.
5. hyposmosis automotive air conditioning hose according to claim 1, is characterized in that: described outer glue-line is ethylene propylene diene rubber.
6. the hyposmosis automotive air conditioning hose according to any one of claim 1-5, is characterized in that: the caliber of described automotive air conditioning hose is 15mm ~ 40mm, and the thickness of screen layer is 0.24 ~ 0.3mm, and the thickness of mesoglea is 0.5 ~ 1mm; The thickness of outer glue-line is 1.5 ~ 2mm.
7. a making method for hyposmosis automotive air conditioning hose as claimed in claim 1, it is characterized in that, it comprises the following steps:
Step 1: extrude screen layer, by polyamide, ethylene/vinyl alcohol copolymer layer and polyamide by extruder three layers of co-extrusion;
Step 2: form mesoglea, join in extruder by butyl rubber rubber, extrude sizing material on the shielding layer coated;
Step 3: use knitting machine to weave last layer polyester PET yarn on mesoglea, form pipe embryo;
Step 4: use Rubber Extruder to extrude ethylene propylene diene rubber, be coated on pipe embryo, form flexible pipe embryo;
Step 5: carry out hot-press vulcanization to flexible pipe embryo, is placed in sulfurizing pot by flexible pipe embryo, take saturated vapour as heat transfer medium, carries out heating press vulcanization, and saturation vapour pressure is 0.5 ~ 0.65MPa, and sulfurize temperature is 150 DEG C ~ 165 DEG C; Hyposmosis automotive air conditioning hose is obtained after the flexible pipe base hard-off core of hot-press vulcanization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510737817.1A CN105257922A (en) | 2015-11-03 | 2015-11-03 | Low-permeability automobile air conditioner hose and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510737817.1A CN105257922A (en) | 2015-11-03 | 2015-11-03 | Low-permeability automobile air conditioner hose and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105257922A true CN105257922A (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510737817.1A Pending CN105257922A (en) | 2015-11-03 | 2015-11-03 | Low-permeability automobile air conditioner hose and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN105257922A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061883A (en) * | 2017-03-29 | 2017-08-18 | 天津鹏翎胶管股份有限公司 | Low-penetration fuel hose and preparation method thereof and the fuel system comprising the fuel hose |
| CN107965625A (en) * | 2017-11-10 | 2018-04-27 | 安徽龙川橡塑科技有限公司 | A kind of air conditioning hose and preparation method thereof |
| CN113795382A (en) * | 2019-03-11 | 2021-12-14 | 康蒂泰克化学技术有限公司 | Refrigerant hose |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1991227A (en) * | 2005-12-31 | 2007-07-04 | 青岛三祥科技有限公司 | Domestic air-conditioner soft pipe with low infiltration ratio |
| GR1005582B (en) * | 2005-08-11 | 2007-07-16 | Composite seamless, circular tube made of copper with a mixture of a plastic lining (pe-hd-md-ld-lld, pe-xa,b,c, pe-rt, pp-rc, polyolefin-based lsf, pet, eva, pvc or pe) the components of which are strongly bonded together by an adhesive mixture suitable for sanitary installations, heating/air-conditioning installations and gas (refrigerant, fuel and natural gas) installations and production method | |
| CN101418889A (en) * | 2008-12-05 | 2009-04-29 | 天津鹏翎胶管股份有限公司 | Structure of low infiltration air conditioner rubber pipe and making method |
| CN102563238A (en) * | 2012-01-10 | 2012-07-11 | 冀州市金星橡胶制品有限责任公司 | Air-conditioning rubber tube |
| CN204114381U (en) * | 2014-09-29 | 2015-01-21 | 阔丹—凌云汽车胶管有限公司 | Domestic air conditioning sebific duct |
-
2015
- 2015-11-03 CN CN201510737817.1A patent/CN105257922A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR1005582B (en) * | 2005-08-11 | 2007-07-16 | Composite seamless, circular tube made of copper with a mixture of a plastic lining (pe-hd-md-ld-lld, pe-xa,b,c, pe-rt, pp-rc, polyolefin-based lsf, pet, eva, pvc or pe) the components of which are strongly bonded together by an adhesive mixture suitable for sanitary installations, heating/air-conditioning installations and gas (refrigerant, fuel and natural gas) installations and production method | |
| CN1991227A (en) * | 2005-12-31 | 2007-07-04 | 青岛三祥科技有限公司 | Domestic air-conditioner soft pipe with low infiltration ratio |
| CN101418889A (en) * | 2008-12-05 | 2009-04-29 | 天津鹏翎胶管股份有限公司 | Structure of low infiltration air conditioner rubber pipe and making method |
| CN102563238A (en) * | 2012-01-10 | 2012-07-11 | 冀州市金星橡胶制品有限责任公司 | Air-conditioning rubber tube |
| CN204114381U (en) * | 2014-09-29 | 2015-01-21 | 阔丹—凌云汽车胶管有限公司 | Domestic air conditioning sebific duct |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061883A (en) * | 2017-03-29 | 2017-08-18 | 天津鹏翎胶管股份有限公司 | Low-penetration fuel hose and preparation method thereof and the fuel system comprising the fuel hose |
| CN107965625A (en) * | 2017-11-10 | 2018-04-27 | 安徽龙川橡塑科技有限公司 | A kind of air conditioning hose and preparation method thereof |
| CN113795382A (en) * | 2019-03-11 | 2021-12-14 | 康蒂泰克化学技术有限公司 | Refrigerant hose |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160120 |