CN101875744B - Formula of outer rubber layer of hyposmosis air conditioner rubber pipe - Google Patents
Formula of outer rubber layer of hyposmosis air conditioner rubber pipe Download PDFInfo
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- CN101875744B CN101875744B CN2009103107828A CN200910310782A CN101875744B CN 101875744 B CN101875744 B CN 101875744B CN 2009103107828 A CN2009103107828 A CN 2009103107828A CN 200910310782 A CN200910310782 A CN 200910310782A CN 101875744 B CN101875744 B CN 101875744B
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Abstract
The invention relates to a formula of an outer rubber layer of a hyposmosis air conditioner rubber pipe. The outer rubber layer of the hyposmosis air conditioner rubber pipe is prepared from the following components in parts by mass: 40-60 parts of low Mooney EPDM (Ethylene-Propylene-Diene Monomer) rubber, 60-40 parts of high Mooney EPDM rubber, 130-150 parts of fast extruding furnace black, 50-70 parts of paraffin oil, 4-6 parts of zinc oxide, 0.5-1.5 parts of stearic acid, 1.0-2.5 parts of dibenzothiazyl disulfide, 0.4-0.8 part of di-thiuram tetrasulfide, 1.0-2.0 parts of zinc dibutyl dithiocarbamate, 0.4-0.8 part of tetramethyl thiuram disulfide, 0.8-1.2 parts of sulphur and 1-3 parts of adhesives MP. Compared with the traditional product, the invention has obvious characteristics that the outer rubber layer of the hyposmosis air conditioner rubber pipe has the hardness of 80A and the tensile strength of 16.0MPa, the adhesive force of the outer rubber layer and a textile reaches 3.5KN/m, and the permeability of a refrigerant R134a reaches 0.91Kg/m<2>/year.
Description
Technical field
The present invention relates to the sebific duct technical field, particularly refrigeration agent is the outer glue-line prescription of Tetrafluoroethane (being called for short R134a) air conditioner rubber pipe.
Background technology
Low infiltration air conditioner rubber pipe mainly refers to the air conditioner rubber pipe of in automotive air-conditioning system delivering liquid or gaseous refrigerant R134a, and the infiltration capacity of refrigeration agent is low, and this sebific duct is that interior pervious course, mesogloea, fabric reinforcement, outer glue-line constitute from inside to outside.Because the application of air-conditioning refrigerant R134a, the structure of air conditioner rubber pipe and changes in material are very big.International, the domestic at present structure of generally using is polymeric amide (nylon)-rubber/fabric/rubber.The preferred nylon of pervious course in this structure, because the best material of anti-the refrigerant R134a is a nylon, mesogloea rubber is selected terpolymer EP rubber (EPDM) for use, and tissue layer is selected polyester line (PET) for use, and outer glue-line is selected terpolymer EP rubber (EPDM) for use.The osmotic-pressure-tolerant of air conditioner rubber pipe depends on selecting for use of layers of material and mesogloea and interior pervious course, the bonding force of outer glue-line and tissue layer, what the present invention was badly in need of solving is the bonding force problem of outer layer glue and tissue layer polyester line, the rubber that at present domestic and international air conditioner rubber pipe outer layer glue is selected for use usually is EPDM, because EPDM is heat-resisting, ozone resistance is good, and cost is low, and other rubber such as AEM, CSM, HNBR costs an arm and a leg, processing performance is poor, usually do not adopted, but EPDM is a non-polar rubber, poor with the bonding force of tissue layer polyester line, use the bonding force 1.5KN/m of a kind of preferably outer glue-line (EPDM) prescription and tissue layer at present, this bonding force can not guarantee firm bonding of the outer glue-line of air conditioner rubber pipe and tissue layer, can cause the air-conditioning pipe assembly to leak, not reach the requirement of hyposmosis, the bonding force that therefore improves outer glue-line (EPDM) and tissue layer has become the difficult problem that urgent need solves in the industry.
Summary of the invention
Purpose of the present invention just provides a kind of outer glue-line (EPDM) prescription of low infiltration air conditioner rubber pipe, is applied in the automotive air-conditioning system, reaches the refrigerant R134a hyposmosis, the protection environment.
The component of the outer glue-line of low infiltration air conditioner rubber pipe of the present invention and mass fraction prescription are as follows:
40～60 parts of low Mooney terpolymer EP rubbers (L-EPDM),
60～40 parts of high Mooney terpolymer EP rubbers (H-EPDM),
Fast carbon black (N550) 130～150 parts that extrude,
50～70 parts of paraffin oils,
4～6 parts in zinc oxide,
0.5～1.5 part of stearic acid
1.0～2.5 parts of dibenzothiazyl disulfides (DM),
0.4～0.8 part of tetra-sulfurized pair thiuram (DPTT),
1.0～2.0 parts of zinc dibutyl dithiocarbamates (BZ),
0.4～0.8 part of tetramethyl-thiuram disulfide (TMTD),
0.8～1.2 part in sulphur,
1～3 part of caking agent MP.
The mass fraction of low Mooney terpolymer EP rubber and high Mooney terpolymer EP rubber and be 100 parts.
Sebific duct structure of the present invention is interior pervious course (nylon), mesogloea (CIIR), fabric reinforcement (polyester line), outer glue-line (EPDM) from inside to outside.
Outer layer glue major ingredient terpolymer EP rubber of the present invention is divided into high Mooney terpolymer EP rubber and low Mooney terpolymer EP rubber, for terpolymer EP rubber, and mooney viscosity (ML
1+4100 ℃) be about the low Mooney that is below 60, mooney viscosity is to be high Mooney more than 60.The tensile strength height of rubber, need to use the rubber of high Mooney, but the rubber expressing technique of high Mooney is poor, thereby selects high Mooney terpolymer EP rubber and low Mooney terpolymer EP rubber and usefulness in prescription for use, can guarantee that the tensile strength height has good expressing technique again.Because the reinforcement of terpolymer EP rubber self is poor, therefore in rubber, must cooperate suitable strengthening agent, strengthening agent has high wear-resistant carbon black, extrudes carbon black soon.High wear-resistant carbon black, the structure height, particle diameter is little, and reinforcement is good, but it is big to extrude Shi Shengre, the easy incipient scorch of sizing material, it is big to extrude its particle diameter ratio high wear-resistant carbon black of carbon black soon, and the texture ratio high wear-resistant carbon black is little, reinforcement is poor slightly, but expressing technique is good, is better than high wear-resistant carbon black with the bonding force of fabric, therefore selects for use fast extrusion carbon black can guarantee that the tensile strength height can guarantee the bonding force good with fabric again
Caking agent MP is the polyisocyanates salt that chemical company of Japanese Kawaguchi produces, and rubber and fabric are had good bounding force, adds the hardness that can improve rubber in filling a prescription, and tensile strength can significantly improve the bonding force of rubber and fabric.
Effect of the present invention, because caking agent MP adds, improved material physical and mechanical properties and with the bonding force of fabric, compare with traditional product, produce significantly difference, hardness is 80A, tensile strength is 16.0MPa, reach 3.5KN/m with the bonding force of fabric, exceed traditional product 2.0KN/m, because outer glue-line and tissue layer bond together securely, interior pervious course, mesogloea, tissue layer, outer glue-line have formed a sealed whole, stop the infiltration and the leakage of refrigeration agent, improved the osmotic-pressure-tolerant energy of air conditioner rubber pipe.
Embodiment
Embodiment 1:
40 parts of low Mooney terpolymer EP rubbers (L-EPDM),
60 parts of high Mooney terpolymer EP rubbers (H-EPDM),
Fast carbon black (N550) 130 parts that extrude,
50 parts of paraffin oils,
4 parts in zinc oxide,
0.5 part of stearic acid,
1.0 parts of dibenzothiazyl disulfides (DM),
0.4 part of tetra-sulfurized pair thiuram (DPTT),
1.0 parts of zinc dibutyl dithiocarbamates (BZ),
0.4 part of tetramethyl-thiuram disulfide (TMTD),
0.8 part in sulphur,
1 part of caking agent MP.
Embodiment 2:
50 parts of low Mooney terpolymer EP rubbers (L-EPDM),
50 parts of high Mooney terpolymer EP rubbers (H-EPDM),
Fast carbon black (N550) 140 parts that extrude,
60 parts of paraffin oils,
5 parts in zinc oxide,
1.0 parts of stearic acid,
2.0 parts of dibenzothiazyl disulfides (DM),
0.6 part of tetra-sulfurized pair thiuram (DPTT),
1.5 parts of zinc dibutyl dithiocarbamates (BZ),
0.6 part of tetramethyl-thiuram disulfide (TMTD),
1.0 parts in sulphur,
2 parts of caking agent MP.
Embodiment 3:
60 parts of low Mooney terpolymer EP rubbers (L-EPDM),
40 parts of high Mooney terpolymer EP rubbers (H-EPDM),
Fast carbon black (N550) 150 parts that extrude,
70 parts of paraffin oils,
6 parts in zinc oxide,
1.5 parts of stearic acid,
2.5 parts of dibenzothiazyl disulfides (DM),
0.8 part of tetra-sulfurized pair thiuram (DPTT),
2.0 parts of zinc dibutyl dithiocarbamates (BZ),
0.8 part of tetramethyl-thiuram disulfide (TMTD),
1.2 parts in sulphur,
3 parts of caking agent MP.
Adopt the outer glue-line prescription of the foregoing description, the preparation refrigeration agent is the outer glue-line of Tetrafluoroethane (being called for short R134a) air conditioner rubber pipe, can satisfy the service requirements of low infiltration air conditioner rubber pipe.Material property, hardness 78A, tensile strength 16.0MPa reaches 3.5KN/m with the bonding force of fabric, penetrating quality, the rate of permeation of refrigerant R134a reaches 0.91Kg/m
2/ year, and U.S. SAEJ2064 standard-required rate of permeation 9.7Kg/m
2/ year.
Claims (1)
1. the outer glue-line of a low infiltration air conditioner rubber pipe is characterized in that the component of outer glue-line and mass fraction prescription are as follows:
40～60 parts of low Mooney terpolymer EP rubber L-EPDM,
60～40 parts of high Mooney terpolymer EP rubber H-EPDM,
Fast 130～150 parts of the carbon black N550 that extrude,
50～70 parts of paraffin oils,
4～6 parts in zinc oxide,
0.5～1.5 part of stearic acid
1.0～2.5 parts of dibenzothiazyl disulfide DM,
0.4～0.8 part of tetra-sulfurized pair thiuram DPTT,
1.0～2.0 parts of zinc dibutyl dithiocarbamate BZ,
0.4～0.8 part of tetramethyl-thiuram disulfide TMTD,
0.8～1.2 part in sulphur,
1～3 part of caking agent MP;
Wherein: mooney viscosity ML
1+4100 ℃ is the low Mooney that is below 60, and mooney viscosity is to be high Mooney more than 60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103107828A CN101875744B (en) | 2009-12-03 | 2009-12-03 | Formula of outer rubber layer of hyposmosis air conditioner rubber pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103107828A CN101875744B (en) | 2009-12-03 | 2009-12-03 | Formula of outer rubber layer of hyposmosis air conditioner rubber pipe |
Publications (2)
| Publication Number | Publication Date |
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| CN101875744A CN101875744A (en) | 2010-11-03 |
| CN101875744B true CN101875744B (en) | 2011-12-14 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286178B (en) * | 2011-07-19 | 2013-03-13 | 天津鹏翎胶管股份有限公司 | EPDM (ethylene propylene diene monomer) composition for high-hardness glue injection |
| CN102563237B (en) * | 2011-12-26 | 2014-07-23 | 青岛三祥科技股份有限公司 | Hydraulic-controlled clutch pipe and production process thereof |
| CN103554690A (en) * | 2013-11-05 | 2014-02-05 | 天津鹏翎胶管股份有限公司 | Ethylene propylene diene terpolymer rubber composition for automobile air conditioner hose external rubber layer |
| CN104129106B (en) * | 2014-08-06 | 2016-04-27 | 青岛三祥科技股份有限公司 | Low extraction hydraulic braking pipe |
| CN104194162A (en) * | 2014-08-20 | 2014-12-10 | 太仓荣南密封件科技有限公司 | EPDM (ethylene-propylene-diene monomer) rubber for air conditioners and preparation technique thereof |
| CN104231454A (en) * | 2014-09-23 | 2014-12-24 | 太仓荣南密封件科技有限公司 | EPDM (Ethylene-Propylene-Diene Monomer) white sponge strip for automobile air conditioner and preparation method of EPDM white sponge strip |
| CN105237894A (en) * | 2015-11-18 | 2016-01-13 | 南京七四二五橡塑有限责任公司 | Formula of ethylene propylene diene monomer rubber for rubber layer in rubber tube of air conditioner |
| CN111234388A (en) * | 2018-11-28 | 2020-06-05 | 宁海建新胶管有限公司 | High-temperature-resistant low-pressure-change radiator water pipe material vulcanized by sulfur system and preparation method thereof |
| CN110591236A (en) * | 2019-09-20 | 2019-12-20 | 扬州鑫润橡塑有限公司 | High-strength water heating pipe and processing technology thereof |
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Address after: 300270 No. 1703, Ge Wan Road, Zhong Tang Industrial Zone, Binhai New Area, Tianjin Patentee after: Tianjin Peng Ling group Limited by Share Ltd Address before: 300384 No. 1703, Ge Wan Road, Grand Port, Tianjin Patentee before: Tianjin Pengling Rubber Tube Co., Ltd. |
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