CN104789144B - Heat-shrinkable double-wall miniature seal cap for automobile wiring harness end connector and manufacturing method thereof - Google Patents
Heat-shrinkable double-wall miniature seal cap for automobile wiring harness end connector and manufacturing method thereof Download PDFInfo
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- CN104789144B CN104789144B CN201510136985.5A CN201510136985A CN104789144B CN 104789144 B CN104789144 B CN 104789144B CN 201510136985 A CN201510136985 A CN 201510136985A CN 104789144 B CN104789144 B CN 104789144B
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Abstract
The invention discloses a water-proof, oil-resistant, flame-retardant and environment-friendly heat-shrinkable double-wall miniature seal cap for an automobile wiring harness end connector and a manufacturing method thereof. An outer wall is prepared from polyethylene, oil-resistant rubber, silicon rubber, a flame retardant, a thermal stabilizer, an antioxidant, a lubricant, a sensitized crosslinking agent and carbon black; an inner wall and a cap end plug are made of modified polyamide hot-melt adhesive. The double-wall miniature seal cap is manufactured by mixing, granulating, co-extruding, irradiating, expanding, sealing a cap end and other processes; the manufactured water-proof, oil-resistant, flame-retardant and environment-friendly heat-shrinkable double-wall miniature seal cap for the automobile wiring harness end connector has excellent wear resistance, oil resistance, flame retardance and water repellency, and meets RoHS standards; the manufacturing method has the characteristics of simple and quick operation, and reduction in labor intensity; according to the manufacturing method, phenomena such as loosing, falling and damping are avoided, and finally long-term operation stability of an electronic system is ensured.
Description
Technical field
The present invention relates to a kind of automotive wire bundle terminal fitting with the mini sealing cap of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled and its
Preparation method, belongs to automotive wire bundle terminal fitting protection field.
Background technology
Automotive wire bundle, for passing on various command informations and telecommunications signal, is made at car load equivalent to the neutral net of automobile
In preferably control and running status.Most of automotive wire bundle terminal fitting guard methods at present are made after power lug is completed
With insulating tape wind multi-turn, the method exist poorly sealed, weather resisteant it is poor, not oil resistant the shortcomings of, can go out after long-time use
Now loosening, obscission, may result in vehicle electronic system and break down, and then cause vehicle security incident occur, cause
Personnel's property loss.
The content of the invention
For the problem that prior art is present, the application provides a kind of automotive wire bundle terminal fitting fire-retardant ring of waterproof oil resistant
The mini sealing cap of thermal protection contracting double-walled, it is ensured that vehicle harness is when greasy dirt corrodes, shakes friction, harsh weather, wet environment
The stability of longtime running, it is final to ensure personnel's property safety.Concrete technical scheme is as follows.
The application provides a kind of automotive wire bundle terminal fitting mini sealing cap of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled, including
Following component：Outer wall includes polyethylene 70-80 parts by weight；Oil resistant rubber 20-30 parts by weight；Fire retardant 35-45 weight portions
Number；Silicone rubber 5-15 parts by weight；Heat stabilizer 3-5 parts by weight；Antioxidant 1-2.0 parts by weight；Lubricant 1.0-2.0 weights
Amount number；Sensitization cross-linking agent 1.0-2.0 parts by weight；Carbon black 3-6 parts by weight；Inwall is modified polyamide thermosol；Cap end
Tamper is modified polyamide thermosol.
Preferably, polyethylene described herein is the one or any several blending in LDPE, LLDPE or HDPE
Thing, melt index 0.2-7.0g/10min of the polyethylene.
Preferably, oil resistant rubber described herein is chloride compound：Chlorinated polyethylene, chlorosulfonated polyethylene, chlorine
One or any several blend in hydrin rubber or neoprene.
Preferably, fire retardant described herein is TDE, antimony oxide, magnesium hydroxide, aluminium hydroxide
In one or more mixture.
Preferably, heat stabilizer described herein is epoxy soybean oil, rare-earth stabilizer, zinc stearate stabilizer, has
One or more mixture in machine stannum stabilizer.
Preferably, antioxidant described herein is the IRGANOX B-215 of Ciba, and it is hindered phenol antioxygen
IRGANOX 1,010 33% and the synergistic complex of organic phosphite IRGANOX 168 67%.
Preferably, lubricant described herein is any in stearic acid, calcium stearate, zinc stearate, Tissuemat E
Several mixture.
Preferably, silicone rubber described herein is methyl vinyl silicone rubber, and it has excellent electric insulating quality, hates
Water, protection against the tide, antidetonation and physiological inertia etc..
Preferably, sensitization cross-linking agent described herein is trimethylol-propane trimethacrylate；It has height boiling
Point, high reaction activity, high crosslink density, low viscosity, low volatilization, low stimulation, pliability are good.Cross-linking agent is sensitized as irradiation：Energy
Radiation dose is reduced, shortens exposure time, improve crosslink density, with viscosity is low, the degree of cross linking is high.
Preferably, carbon black described herein is high abrasion carbon black.
Preferably, inwall is modified polyamide thermosol in the application, and its softening point is 110-130 DEG C, and viscosity is
50000-70000mPa.S/190℃；Cap end tamper is modified polyamide thermosol rod, and softening point is 140-160 DEG C, viscosity
For 80000-100000mPa.S/190 DEG C.
Further, present invention also provides above-mentioned automotive wire bundle terminal fitting waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled
The preparation method of mini sealing cap, mainly comprises the steps：
1）The preparation of outer wall masterbatch：The component of outer wall is mixed by proportioning by batch mixing two-step method, i.e., puts into plastics first
Granule, the auxiliary agent high-speed stirred in blender, puts into again powder, afterwards high-speed stirred again after stirring 3-5 minutes, treats batch mixing temperature
Degree terminates batch mixing when reaching 50-60 DEG C, finally by uniform mixed material to 145-155 DEG C of banburying 35- in masticator
40min, after Jing dual-screw pelletizers make outer wall masterbatch；
2）The preparation of modified hot melt adhesive：Polyamide granules are dried more than 24 hours in 60-70 DEG C of convection oven first,
Modified feedstock and polyamide granules are added into mixer, at 45-55 DEG C 5-8min is mixed, then existed using double screw extruder
Mixing, extrusion, tie rod, water-cooled, air-dried, pelletizing, obtain automotive wire bundle terminal fitting waterproof oil resistant fire-retardant at 180-200 DEG C
The modified polyamide thermosol material of the mini sealing cap inwall of environmentally friendly pyrocondensation double-walled and cap end tamper；
3）The preparation of co-extrusion pyrocondensation double-wall pipe：Outer wall master batch and inwall modified polyamide thermosol are being furnished with co-extrusion die
Two single screw extrusion machines be extruded into double-wall tube at 180-230 DEG C；
4）Irradiation：Double-wall tube is crosslinked in 3.0MeV energy electrons radiation from machine, and irradiation dose is 5.0Mrad-
7.0Mrad ；
5）Expansion：Pyrocondensation double-wall tube at 140-160 DEG C, expand 4 times, cool down, shape by positive companding equipment after irradiation；
6）Cap end closure：The heat-shrink tube expanded is put in automatic cap end seal jaws equipment, heat-shrink tube is cut into fixed length
Cutting, per section of same port is inserted into the modified polyamide thermosol rod of 4-6mm length, and this port of pyrocondensation, makes automotive line
The beamsplitter terminal joint mini sealing cap of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled.
Further, above-mentioned steps 2）Described in modified feedstock include ethane-acetic acid ethyenyl ester, ethylene vinyl
Ester, hydrogenated rosin glyceride, terpene resin, microwax and antioxidant.
Beneficial effect：The mini sealing cap of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled that the application is provided can be widely applied to motor-driven
The protection of the wiring harness terminal joint of vehicle, its have excellent wearability, oil resistivity, anti-flammability, water proofing property, meet RoHS mark
Standard, while the characteristics of having production technology easy to operate, quick, reduction labor intensity, is not in loosen, come off, making moist
Phenomenon, the stability of electronic system longtime running when finally ensureing that vehicle is used.
Specific embodiment
Explanation is further explained to the application with reference to embodiment.
Embodiment 1
Raw material components are constituted, outer wall：The parts by weight of polyethylene 70；Chlorinated polyethylene and chlorosulfonated polyethylene totally 20 weight portion
Number；TDE, antimony oxide and magnesium hydroxide totally 35 parts by weight；The parts by weight of methyl vinyl silicone rubber 8；Ring
Oxygen soybean oil and organic tin stabilizer totally 3 parts by weight；The parts by weight of antioxidant 2.0；Stearic acid and calcium stearate totally 1.0 weight
Number；The parts by weight of trimethylol-propane trimethacrylate 1.0；The parts by weight of carbon black 3；Inwall：Modified polyamide is heated
Glue, softening point is 115-120 DEG C, and viscosity is 55000-65000mPa.S/190 DEG C, cap end tamper：Modified polyamide thermosol
Rod, softening point is 140-150 DEG C, and viscosity is 80000-100000mPa.S/190 DEG C；
It is prepared by product：
1）The preparation of outer wall masterbatch：The component of outer wall is mixed by proportioning by batch mixing two-step method, i.e., puts into plastics first
Granule, the auxiliary agent high-speed stirred in blender, stirring puts into again fire retardant after 3 minutes, afterwards high-speed stirred again, treats batch mixing temperature
Degree terminates batch mixing when reaching 50 DEG C, finally by uniform mixed material to 145 DEG C of banburying 35min in masticator, after Jing
Dual-screw pelletizer makes outer wall masterbatch；
2）The preparation of modified hot melt adhesive：Polyamide granules are dried more than 24 hours in 60 DEG C of convection ovens first, will
Modified feedstock adds mixer with polyamide granules, mixes 5min at 45 DEG C, then using double screw extruder at 180 DEG C
Mixing, extrusion, tie rod, water-cooled, air-dried, pelletizing, obtain automotive wire bundle terminal fitting waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled
The modified polyamide thermosol material of mini sealing cap inwall and cap end tamper；
3）The preparation of co-extrusion pyrocondensation double-wall pipe：Outer wall master batch and inwall modified polyamide thermosol are being furnished with co-extrusion die
Two single screw extrusion machines be extruded into double-wall tube at 180 DEG C；
4）Irradiation：Double-wall tube is crosslinked in 3.0MeV energy electrons radiation from machine, and irradiation dose is 5.0Mrad-
7.0Mrad ；
5）Expansion：Pyrocondensation double-wall tube at 140 DEG C, expand 4 times, cool down, shape by positive companding equipment after irradiation；
6）Cap end closure：The heat-shrink tube expanded is put in automatic cap end seal jaws equipment, heat-shrink tube is cut into fixed length
Cutting, per section of same port is inserted into the modified polyamide thermosol rod of 5mm length, and this port of pyrocondensation, makes automotive wire bundle
The terminal fitting mini sealing cap of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled.
Embodiment 2
Raw material components are constituted, outer wall：The parts by weight of polyethylene 80；Chlorohydrin rubber and chlorinated polyethylene totally 25 parts by weight；
Magnesium hydroxide and aluminium hydroxide totally 40 parts by weight；The parts by weight of methyl vinyl silicone rubber 10；The weight of zinc stearate stabilizer 4
Number；The parts by weight of antioxidant 1.5；Stearic acid and Tissuemat E totally 1.5 parts by weight；Trimethylol propane trimethyl acrylic acid
The parts by weight of ester 1.0；The parts by weight of carbon black 4；Inwall：Modified polyamide thermosol, softening point is 120-125 DEG C, and viscosity is
50000-70000mPa.S/190 DEG C, cap end tamper：Modified polyamide thermosol rod, softening point is 145-155 DEG C, and viscosity is
86000-93000mPa.S/190℃；
It is prepared by product：
1）The preparation of outer wall masterbatch：The component of outer wall is mixed by proportioning by batch mixing two-step method, i.e., puts into plastics first
Granule, the auxiliary agent high-speed stirred in blender, stirring puts into again fire retardant after 5 minutes, afterwards high-speed stirred again, treats batch mixing temperature
Degree terminates batch mixing when reaching 60 DEG C, finally by uniform mixed material to 155 DEG C of banburying 40min in masticator, after Jing
Dual-screw pelletizer makes outer wall masterbatch；
2）The preparation of modified hot melt adhesive：Polyamide granules are dried more than 24 hours in 70 DEG C of convection ovens first, will
Modified feedstock adds mixer with polyamide granules, mixes 8min at 55 DEG C, then using double screw extruder at 200 DEG C
Mixing, extrusion, tie rod, water-cooled, air-dried, pelletizing, obtain automotive wire bundle terminal fitting waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled
The modified polyamide thermosol material of mini sealing cap inwall and cap end tamper；
3）The preparation of co-extrusion pyrocondensation double-wall pipe：Outer wall master batch and inwall modified polyamide thermosol are being furnished with co-extrusion die
Two single screw extrusion machines be extruded into double-wall tube at 230 DEG C；
4）Irradiation：Double-wall tube is crosslinked in 3.0MeV energy electrons radiation from machine, and irradiation dose is 5.0Mrad-
7.0Mrad ；
5）Expansion：Pyrocondensation double-wall tube at 140 DEG C, expand 4 times, cool down, shape by positive companding equipment after irradiation；
6）Cap end closure：The heat-shrink tube expanded is put in automatic cap end seal jaws equipment, heat-shrink tube is cut into fixed length
Cutting, per section of same port is inserted into the modified polyamide thermosol rod of 5mm length, and this port of pyrocondensation, makes automotive wire bundle
The terminal fitting mini sealing cap of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled.
Embodiment 3
Raw material components are constituted, outer wall：The parts by weight of polyethylene 75；The parts by weight of chlorinated polyethylene 30；Decabrominated dipheny second
Alkane, antimony oxide, magnesium hydroxide and aluminium hydroxide totally 45 parts by weight；The parts by weight of methyl vinyl silicone rubber 15；Rare earth
Stabilizer and epoxy soybean oil totally 5 parts by weight；The parts by weight of antioxidant 1；Stearic acid and zinc stearate totally 2 parts by weight；Three
The parts by weight of TRIM 1.5；The parts by weight of carbon black 5；Inwall：Modified polyamide thermosol, softens
Point is 120-125 DEG C, and viscosity is 50000-70000mPa.S/190 DEG C, cap end tamper：Modified polyamide thermosol rod, softens
Point is 150-160 DEG C, and viscosity is 90000-100000mPa.S/190 DEG C；
It is prepared by product：
1）The preparation of outer wall masterbatch：The component of outer wall is mixed by proportioning by batch mixing two-step method, i.e., puts into plastics first
Granule, the auxiliary agent high-speed stirred in blender, stirring puts into again fire retardant after 4 minutes, afterwards high-speed stirred again, treats batch mixing temperature
Degree terminates batch mixing when reaching 55 DEG C, finally by uniform mixed material to 150 DEG C of banburying 40min in masticator, after Jing
Dual-screw pelletizer makes outer wall masterbatch；
2）The preparation of modified hot melt adhesive：Polyamide granules are dried more than 24 hours in 65 DEG C of convection ovens first, will
Modified feedstock adds mixer with polyamide granules, mixes 6min at 50 DEG C, then using double screw extruder at 190 DEG C
Mixing, extrusion, tie rod, water-cooled, air-dried, pelletizing, obtain automotive wire bundle terminal fitting waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled
The modified polyamide thermosol material of mini sealing cap inwall and cap end tamper；
3）The preparation of co-extrusion pyrocondensation double-wall pipe：Outer wall master batch and inwall modified polyamide thermosol are being furnished with co-extrusion die
Two single screw extrusion machines be extruded into double-wall tube at 200 DEG C；
4）Irradiation：Double-wall tube is crosslinked in 3.0MeV energy electrons radiation from machine, and irradiation dose is 5.0Mrad-
7.0Mrad ；
5）Expansion：Pyrocondensation double-wall tube at 140 DEG C, expand 4 times, cool down, shape by positive companding equipment after irradiation；
6）Cap end closure：The heat-shrink tube expanded is put in automatic cap end seal jaws equipment, heat-shrink tube is cut into fixed length
Cutting, per section of same port is inserted into the modified polyamide thermosol rod of 5mm length, and this port of pyrocondensation, makes automotive wire bundle
The terminal fitting mini sealing cap of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled.
RoHS standards are met by the mini sealing cap of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled obtained in above-described embodiment, can be wide
The protection of the general wiring harness terminal joint for being applied to motor vehicles, it has excellent wearability, oil resistivity, anti-flammability, water proofing property.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (10)
1. a kind of automotive wire bundle terminal fitting mini sealing cap of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled, it is characterised in that include
Following component：Outer wall includes polyethylene 70-80 parts by weight；Oil resistant rubber 20-30 parts by weight；Fire retardant 35-45 weight portions
Number；Silicone rubber 5-15 parts by weight；Heat stabilizer 3-5 parts by weight；Antioxidant 1-2.0 parts by weight；Lubricant 1.0-2.0 weights
Amount number；Sensitization cross-linking agent 1.0-2.0 parts by weight；Carbon black 3-6 parts by weight；Inwall is modified polyamide thermosol；Cap end
Tamper is modified polyamide thermosol.
2. a kind of automotive wire bundle terminal fitting according to claim 1 mini envelope of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled
Cap, it is characterised in that the polyethylene is the one or any several blend in LDPE, LLDPE or HDPE, it is described poly-
Melt index 0.2-7.0g/10min of ethylene.
3. a kind of automotive wire bundle terminal fitting according to claim 1 mini envelope of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled
Cap, it is characterised in that the oil resistant rubber is chloride compound：Chlorinated polyethylene, chlorosulfonated polyethylene, chlorohydrin rubber or chlorine
One or any several blend in buna.
4. a kind of automotive wire bundle terminal fitting according to claim 1 mini envelope of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled
Cap, it is characterised in that the fire retardant be TDE, antimony oxide, magnesium hydroxide, aluminium hydroxide middle a kind of or
Several mixture.
5. a kind of automotive wire bundle terminal fitting according to claim 1 mini envelope of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled
Cap, it is characterised in that the heat stabilizer is epoxy soybean oil, rare-earth stabilizer, zinc stearate stabilizer, organic tin stabilizer
In one or more mixture.
6. a kind of automotive wire bundle terminal fitting according to claim 1 mini envelope of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled
Cap, it is characterised in that the antioxidant is the IRGANOX B-215 of Ciba, and it is hindered phenol antioxygen IRGANOX 1010
33% and organic phosphite IRGANOX 168 67% synergistic complex；The lubricant is stearic acid, calcium stearate, stearic acid
Any several mixture in zinc, Tissuemat E.
7. a kind of automotive wire bundle terminal fitting according to claim 1 mini envelope of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled
Cap, it is characterised in that the silicone rubber is methyl vinyl silicone rubber；The sensitization cross-linking agent is trimethylol propane trimethyl
Acrylate；The carbon black is high abrasion carbon black.
8. a kind of automotive wire bundle terminal fitting according to claim 1 mini envelope of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled
Cap, it is characterised in that inwall is modified polyamide thermosol, softening point is 110-130 DEG C, and viscosity is 50000-
70000mPa.S/190℃；Cap end tamper is modified polyamide thermosol, and softening point is 140-160 DEG C, and viscosity is 80000-
100000mPa.S/190℃。
9. claim 1-8 arbitrary automotive wire bundle terminal fitting mini sealing cap of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled
Preparation method, it is characterised in that comprise the steps,
1）The preparation of outer wall masterbatch：The component of outer wall is mixed by proportioning by batch mixing two-step method, i.e., first put into plastic grain,
Auxiliary agent high-speed stirred in blender, puts into again powder, afterwards high-speed stirred again after stirring 3-5 minutes, treats that mixture temperature reaches
Terminate batch mixing during to 50-60 DEG C, finally by uniform mixed material to 145-155 DEG C of banburying 35-40min in masticator,
After Jing dual-screw pelletizers make outer wall masterbatch；
2）The preparation of modified hot melt adhesive：Polyamide granules are dried more than 24 hours in 60-70 DEG C of convection oven first, will be changed
Property raw material and polyamide granules add mixer, 5-8min is mixed at 45-55 DEG C, then using double screw extruder in 180-
Mixing, extrusion, tie rod, water-cooled, air-dried, pelletizing, obtain automotive wire bundle terminal fitting waterproof oil resistant flame-proof environmental protection at 200 DEG C
The modified polyamide thermosol material of the mini sealing cap inwall of pyrocondensation double-walled and cap end tamper；
3）The preparation of co-extrusion pyrocondensation double-wall pipe：Outer wall master batch and inwall modified polyamide thermosol are in be furnished with co-extrusion die two
Platform single screw extrusion machine is extruded into double-wall tube at 180-230 DEG C；
4）Irradiation：Double-wall tube is crosslinked in 3.0MeV energy electrons radiation from machine, and irradiation dose is 5.0Mrad-7.0Mrad；
5）Expansion：Pyrocondensation double-wall tube at 140-160 DEG C, expand 4 times, cool down, shape by positive companding equipment after irradiation；
6）Cap end closure：The heat-shrink tube expanded is put in automatic cap end seal jaws equipment, heat-shrink tube is cut into the cutting of fixed length,
Per section of same port is inserted into the modified polyamide thermosol rod of 5mm length, and this port of pyrocondensation, makes automotive wire bundle terminal and connects
The head mini sealing cap of waterproof oil resistant flame-proof environmental protection pyrocondensation double-walled.
10. preparation method according to claim 9, it is characterised in that step 2）Described in modified feedstock include ethylene-second
Vinyl acetate, ethylene vinyl acetate, hydrogenated rosin glyceride, terpene resin, microwax and antioxidant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136985.5A CN104789144B (en) | 2015-03-27 | 2015-03-27 | Heat-shrinkable double-wall miniature seal cap for automobile wiring harness end connector and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136985.5A CN104789144B (en) | 2015-03-27 | 2015-03-27 | Heat-shrinkable double-wall miniature seal cap for automobile wiring harness end connector and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104789144A CN104789144A (en) | 2015-07-22 |
| CN104789144B true CN104789144B (en) | 2017-04-12 |
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| CN201510136985.5A Expired - Fee Related CN104789144B (en) | 2015-03-27 | 2015-03-27 | Heat-shrinkable double-wall miniature seal cap for automobile wiring harness end connector and manufacturing method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221909A (en) * | 2017-07-07 | 2017-09-29 | 上海长园电子材料有限公司 | Quick sealing cap manufacture system |
| CN108075434A (en) * | 2017-12-19 | 2018-05-25 | 上海晗普新材料科技有限公司 | A kind of insulated enclosure pyrocondensation sealing cap of wire terminations |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4777238A (en) * | 1985-09-07 | 1988-10-11 | Henkel Kommanditgesellschaft Auf Aktien | Polyamide resin from dimer/trimer acid and N-alkyl diamine |
| CN202484454U (en) * | 2012-03-14 | 2012-10-10 | 潍坊中石科技有限公司 | Thermal shrinkage sealing cap of through-wall pipe |
| CN103151111A (en) * | 2012-12-31 | 2013-06-12 | 深圳市宏商材料科技股份有限公司 | Equipment used for fully automatically cutting off end cap of sealing cap and gluing |
-
2015
- 2015-03-27 CN CN201510136985.5A patent/CN104789144B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4777238A (en) * | 1985-09-07 | 1988-10-11 | Henkel Kommanditgesellschaft Auf Aktien | Polyamide resin from dimer/trimer acid and N-alkyl diamine |
| CN202484454U (en) * | 2012-03-14 | 2012-10-10 | 潍坊中石科技有限公司 | Thermal shrinkage sealing cap of through-wall pipe |
| CN103151111A (en) * | 2012-12-31 | 2013-06-12 | 深圳市宏商材料科技股份有限公司 | Equipment used for fully automatically cutting off end cap of sealing cap and gluing |
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