CN105885183A - Halogen-free flame retardant polyolefin fiber material and production technology thereof - Google Patents
Halogen-free flame retardant polyolefin fiber material and production technology thereof Download PDFInfo
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Abstract
The invention discloses a halogen-free flame retardant polyolefin fiber material and its production technology. The halogen-free flame retardant polyolefin fiber material is prepared from the following raw materials (by weight): 10-15 parts of low density polyethylene (LTPE), 30-35 parts of an ethylene-vinyl acetate copolymer (EVA), 55-60 parts of a flame retardant, 2-6 parts of a compatilizer, 2 parts of a synergist and 0.5-5 parts of a processing aid. The above flame retardant is an organic phosphorus flame retardant, or a flame retardant with Mg(OH)2 and Al(OH)3 as main ingredients and with SbO2 as an auxiliary ingredient. The production technology of the halogen-free flame retardant polyolefin fiber material comprises the following steps: (1) burdening; (2) banburying; (3) cooling; (4) grain-sized dicing; (5) dehydration; (6) sorting; (7) drying; and (8) packaging and warehousing: dried granules are packaged and undergo warehousing.
Description
Technical field
The present invention relates to a kind of halogen-free anti-flaming polyolefin optical fiber material and production technology thereof.
Background technology
Halogen-free anti-flaming polyolefin optical fiber material is generally used for sheath material, and it has extraordinary fire resistance, but
It is that the formula technique of halogen-free anti-flaming polyolefin optical fiber material for a long time and process technology are all by institute of overseas enterprise ridge
Disconnected, domestic use is mostly import material, and therefore its price is higher, but the XLPE electricity that domestic processing prepares
The fire resistance of cable material is poor, and processing characteristics is low, poor heat stability, and service life is short.
Summary of the invention
The technical problem to be solved is for above-mentioned deficiency of the prior art, it is provided that Yi Zhongwu
Halogen fire retardant polyolefin optical fiber material and production technology thereof, use the Halogen resistance that this formula and processing technology is produced
Combustion polyolefin optical fiber material has higher fire resistance；The most also there is more preferable processing characteristics, heat stability
Higher, ageing-resistant performance is strong, and service life is long.
The technical solution adopted for the present invention to solve the technical problems is: a kind of halogen-free anti-flaming polyolefin optical fiber material,
The raw material comprising following component and weight portion is used to make:
Low Density Polyethylene (LTPE) 10～15 weight portion；
Ethylene-vinyl acetate copolymer (EVA) 30～35 weight portion；
Fire retardant 55～60 weight portion；
Compatilizer 2～6 weight portion；
Synergist 2 weight portion；
Processing aid 0.5～5 weight portion；
Above-mentioned fire retardant is organic phosphorus flame retardant, or is, with Mg (OH)2、AL(OH)3It is main, then is aided with
SbO2Fire retardant.
As a kind of detailed description of the invention of above-mentioned LTPE, described LTPE is TAFMER resin or Exact tree
Fat；
As a kind of detailed description of the invention of above-mentioned fire retardant, described organic phosphorus flame retardant is phosphor nitrogen combustion inhibitor,
In terms of the gross weight of phosphor nitrogen combustion inhibitor, the mass fraction of phosphorus is 22.1～23.5%, and the mass fraction of nitrogen is 21%.
As a kind of detailed description of the invention number of above-mentioned processing aid, described processing aid is selected from stearic acid, hard
The combination of one or more in fatty acid magnesium, white oil, organic silicone oil and paraffin.
The invention also discloses the production technology of above-mentioned a kind of halogen-free anti-flaming polyolefin optical fiber material, comprise following step
Rapid:
(1) dispensing；Weigh Low Density Polyethylene (LTPE) 10～15 weight portion by weight ratio；Ethylene-
Acetate ethylene copolymer (EVA) 30～35 weight portion；Fire retardant 55～60 weight portion；Compatilizer 2～6 weight
Amount part；Synergist 2 weight portion；Processing aid 0.5～5 weight portion；
(2) banburying；The dispensing weighed in step (1) mixing is added banbury and carries out mixing plasticizing, and
Carry out vacuum water divisional processing, final extrusion molding；
(3) cooling；The product of step (2) extrusion molding is quickly cooled down, make mixing after product
Crystallization rapidly, reduces surface temperature, prevents product inter-adhesive；
(4) pelletizing；Product after cooling in step (3) is sent into pelleter pelletizing；
(5) dehydration；The material grain discharged in pelleter feeding centrifuge dewatering machine is dehydrated, tentatively filters
Surface moisture, it is simple to subsequent sort；
(6) sorting；Material grain after dehydration is sent into vibrosieve sorting, simultaneously by adjusting Vibration Screen mesh
Footpath arranges and sorts out bigger and less defective material grain, selects the material grain that size is relatively uniform；
(7) it is dried；Equal refining grain sorting obtained is delivered to be dried agitator by conveying fan and carries out pre-
Mixing is dried；
(8) packaging warehouse-in；By being dried, complete material particle packing is good, warehouse-in.
As a kind of preferred implementation of banbury in above-mentioned production technology, described banbury by charging aperture to
Discharging opening is divided into first to the tenth totally ten warm areas, and wherein the heating-up temperature of the first warm area is 130～140 DEG C,
The heating-up temperature of the second to the 9th warm area is 150～170 DEG C, and the heating-up temperature of the tenth warm area is 160～185 DEG C；
The screw slenderness ratio of described banbury is 20～25, and compression ratio is 1～1.5；
The machine thorax of described banbury and screw rod all comprise cooling body, and described machine thorax uses blower fan to dry by force refrigeration
Cooling body, described screw rod use toward pitch note coolant cooling body；
The temperature accuracy of each warm area of described banbury controls in ± 2 DEG C；Four warm areas after described banbury
The temperature difference less than or equal to 10 DEG C.
As a kind of improvement of above-mentioned banbury, ten warm areas of described banbury include at least bringing-up section, molten
The section of melting, melt conveying zone, mixing section, homogenizing zone, head metering section；Its temperature control parameter is: charging
Section 130 DEG C, melt zone 160 DEG C, melt conveying zone 160～180 DEG C, mixing section 160 DEG C, homogenizing zone 180 DEG C,
Head metering section 185 DEG C.
Further: described first warm area is feed zone warm area, described tenth warm area is discharging section warm area.
As a kind of detailed description of the invention of above-mentioned production technology, between described step (1) and step (2)
Also comprising the step of stirring mixing, this step is all dispensings in step (1) to be sent into stirring mixer enter
Row high-speed stirred mixes, and mixed raw material is ultimately delivered to the banbury in step (2).
As in above-mentioned production technology, a kind of preferred implementation of step (3), in described step (3)
Cooling use sub-sectional cooling mode, described sub-sectional cooling comprises hot water cooling section successively, air cooling section and
Cold water cooling section；The hot water temperature of described hot water cooling section is more than or equal to 75 DEG C；；Described step (6) and step
Suddenly also comprising the step that first sample confirms between (7), this step will sort out in step (6) at the beginning
The specification of material grain checks；The step of product inspection is also comprised between described step (7) and step (8),
This step is to carry out quality inspection by being dried complete material grain in step (7), picks out underproof product,
The most qualified product is carried out the packaging warehouse-in of step (8).
As in above-mentioned production technology, a kind of preferred implementation of step (7), in described step (7)
Baking temperature be 70 DEG C, drying time is 2～4 hours, and described dry agitator is vacuum dryer
It is dried agitator.
The present invention compared with prior art has the advantage that
The present invention be we in order to comply with the market demand, innovate through effort in recent years, and technology and adding
Halogen-free anti-flaming polyolefin optical fiber material that the accumulation of work technique is developed and production technology thereof；The present invention meets new generation
Discipline people are to fire proofing halogen-freeization, LSZH, the requirement of environmental protection.The employing present invention prepares
Halogen-free anti-flaming polyolefin optical fiber material good with thermoplastic elastic compatability, not molten drop during product burns；Have
Excellent processing characteristics, heat stability is high；There is good resistance to ag(e)ing, can repeatedly reclaim processing and use；
Flame retarding efficiency is high, does not affect goods color；Also environmental protection, meets various countries' environmental requirement simultaneously.
Accompanying drawing illustrates:
Fig. 1 is the process chart of the present invention.
Detailed description of the invention
Below in conjunction with embodiment the specific embodiment of the invention described:
Fig. 1 shows the production technology of halogen-free anti-flaming polyolefin optical fiber material disclosed in this invention, and it can be straight
Connect the standardized production of formula for halogen-free anti-flaming polyolefin optical fiber material disclosed in this invention.Concrete,
A kind of halogen-free anti-flaming polyolefin optical fiber material disclosed by the invention, uses and comprises following component and weight portion
Raw material is made:
Low Density Polyethylene (LTPE) 10～15 weight portion；
Ethylene-vinyl acetate copolymer (EVA) 30～35 weight portion；
Fire retardant 55～60 weight portion；
Compatilizer 2～6 weight portion；
Synergist 2 weight portion；
Processing aid 0.5～5 weight portion；
Above-mentioned fire retardant is organic phosphorus flame retardant, or is, with Mg (OH)2、AL(OH)3It is main, then is aided with
SbO2Fire retardant.
Above-mentioned fire retardant is aided with and is aided with SbO again2Fire retardant, acts primarily as synergism, to reduce Mg (OH)2、
AL(OH)3Consumption improve the compatibility of material, dispersibility, impact resistance；Further, it is also possible to add
Improve Materials Fracture percentage elongation and the coupling agent of tensile strength.During burning, flame retardant filler Mg (OH)2、AL(OH)3
Can discharge water of crystallization, absorb substantial amounts of heat, meanwhile, dehydration can produce substantial amounts of water vapour,
It can dilute imflammable gas, thus stops burning, the most also can form one layer at material surface and not melt not
MgO, AL of combustion2O3, blocked the passage of wire cable insulating or sheath and extraneous thermal oxidative reaction, finally
Cause that material is fire-retardant, self-extinguishment.
Preferably, above-mentioned LTPE is TAFMER resin or Exact resin；
Preferably, above-mentioned organic phosphorus flame retardant is phosphor nitrogen combustion inhibitor, in terms of the gross weight of phosphor nitrogen combustion inhibitor,
The mass fraction of phosphorus is 22.1～23.5%, and the mass fraction of nitrogen is 21%.
Preferably, a kind of detailed description of the invention number of above-mentioned processing aid, described processing aid selected from stearic acid,
The combination of one or more in magnesium stearate, white oil, organic silicone oil and paraffin.
The invention also discloses the production technology of above-mentioned a kind of halogen-free anti-flaming polyolefin optical fiber material, comprise following step
Rapid:
(1) dispensing；Weigh Low Density Polyethylene (LTPE) 10～15 weight portion by weight ratio；Ethylene-
Acetate ethylene copolymer (EVA) 30～35 weight portion；Fire retardant 55～60 weight portion；Compatilizer 2～6 weight
Amount part；Synergist 2 weight portion；Processing aid 0.5～5 weight portion；
(2) banburying；The dispensing weighed in step (1) mixing is added banbury and carries out mixing plasticizing, and
Carry out vacuum water divisional processing, final extrusion molding；
(3) cooling；The product of step (2) extrusion molding is quickly cooled down, make mixing after product
Crystallization rapidly, reduces surface temperature, prevents product inter-adhesive；
(4) pelletizing；Product after cooling in step (3) is sent into pelleter pelletizing；
(5) dehydration；The material grain discharged in pelleter feeding centrifuge dewatering machine is dehydrated, tentatively filters
Surface moisture, it is simple to subsequent sort；
(6) sorting；Material grain after dehydration is sent into vibrosieve sorting, simultaneously by adjusting Vibration Screen mesh
Footpath arranges and sorts out bigger and less defective material grain, selects the material grain that size is relatively uniform；
(7) it is dried；Equal refining grain sorting obtained is delivered to be dried agitator by conveying fan and carries out pre-
Mixing is dried；
(8) packaging warehouse-in；By being dried, complete material particle packing is good, warehouse-in.
Preferably, above-mentioned banbury is divided into first to the tenth totally ten warm areas by charging aperture to discharging opening, wherein
The heating-up temperature of the first warm area is 130～140 DEG C, and the heating-up temperature of the second to the 9th warm area is 150～170 DEG C,
The heating-up temperature of the tenth warm area is 160～185 DEG C；
Due to the fire retardant Mg (OH) in halogen-free anti-flaming polyolefin optical fiber material of the present invention2、AL(OH)3Content bigger
Above so that it has than polrvinyl chloride, non-flame resistant and Halogen flame retardant polyolefine material more under plasticization temperature
High viscosity, it is different with other materials at extrusion equipment and technique that this feature result in it.
Concrete, the banbury draw ratio of the present invention is generally 20-25, but compares, screw slenderness ratio
The jacket surface being 20 extrusion equipment extrusions is more smooth, this is because high in low-smoke halide-free fireproof composite polyolefine material
The Mg (OH) of loading2、AL(OH)3The time stop in draw ratio is 25 screw rods, being heated is longer, is heated
The probability decomposed is higher and affects jacket surface quality, simultaneously as flame retardant agent content is higher, adds material
Frictional force between material and screw rod and machine thorax.Screw compression ratio, spiral groove depth, lead angle, screw rod and machine thorax
For gaps etc., compression ratio is the biggest, spiral groove depth is the deepest, lead angle is the least, screw rod and machine thorax interval the most more
Shear action and frictional force that halogen-free anti-flaming polyolefin material is born in screw rod by little grade are bigger, generation
Frictional heat is bigger, easily causes the thermal decomposition of halogen-free anti-flaming polyolefin material.So, fire retardant polyolefin material
The main Screw Parameters of extrusion equipment of material is: screw slenderness ratio 20-25；Compression ratio 1-1.5.My company selects
Be exactly so-called fire retardant polyolefin bolt special (the lowest merit screw rod), draw ratio is 24, and compression ratio is 1.16.
Simultaneously due also to fire retardant polyolefin plastics add substantial amounts of fire retardant, so the heating to extruding machine
Have higher requirement with cooling system, if temperature is too low, fire retardant polyolefin extrusion can be caused tired
Difficulty, extrusion pressure is excessive, extrudes the coarse tarnish of jacket surface；Temperature is too high, and fire retardant can be caused to decompose,
There is bubble or metachromatism in extrusion sheath.Simultaneously as retardant load level is big in fire retardant polyolefin,
In machine thorax extrusion, substantial amounts of frictional heat and shear heat can be produced, cause fire retardant polyolefin constant temperature liter
Height, causes fire retardant to decompose in order to avoid temperature is too high, it is necessary to cool down machine thorax and screw rod.Machine thorax one
As use blower fan to dry by force refrigeration modes, cooled screw typically uses the mode toward pitch note coolant.
In order to ensure to extrude the quality of sheath, it is necessary to each for extruder extruding zone temperature accuracy is controlled in ± 2 DEG C.No
The warm area of same specification and different manufacturers same specification extruding machine is arranged all can larger difference, and actual temp is arranged to be wanted
It is determined according to test situation, it is noted that, first three district or four district's temperature can not be the highest, rear four district's temperature
Difference not can exceed that 10 DEG C, and warm water district temperature cannot be below 70 DEG C.
Preferably, ten warm areas of above-mentioned banbury include at least bringing-up section, melt zone, melt conveying zone,
Mixing section, homogenizing zone, head metering section；Its temperature control parameter is: feeding section 130 DEG C, melt zone 160 DEG C,
Melt conveying zone 160～180 DEG C, mixing section 160 DEG C, homogenizing zone 180 DEG C, head metering section 185 DEG C.
Preferably, above-mentioned first warm area is feed zone warm area, and described tenth warm area is discharging section warm area.
Preferably, the step that stirring mixes, this step are also comprised between above-mentioned steps (1) with step (2)
It is all dispensings in step (1) to be sent into stirring mixer carry out high-speed stirred mixing, mixed raw material
It is ultimately delivered to the banbury in step (2).
Preferably, the cooling in above-mentioned steps (3) uses sub-sectional cooling mode, and described sub-sectional cooling wraps successively
Containing hot water cooling section, air cooling section and cold water cooling section；Owing to this material containing the nonpolar knots such as LDPE
Crystal formation material, from head plastics temperature out more than 150 DEG C, in order to eliminate non-polar material crystallization process
The internal stress of middle generation, it is necessary to the cable cover(ing) after extrusion is carried out sub-sectional cooling.Suitably adjust head die orifice
And the distance between first segment tank, is adjusted according to speed of production and first segment tank water temperature, if produced
Speed is fast or first segment tank water temperature is low, can suitably strengthen die orifice and the distance of first segment tank；If it is raw
Produce that speed is relatively slow or first segment tank water temperature is higher, then can suitably reduce between die orifice and first segment tank away from
From.
First be hot water cooling, plastics from extruder head out after, along with distributing of heat, plastics temperature
It is gradually lowered, but compared with room temperature or high, normal-temperature water or cold water now can't be used immediately to carry out cold
But, first segment tank must use hot water to cool down, and hot water temperature should be the highest, is typically not lower than
75℃。
Next to that air cooling, the cable temperature cooling down out from hot water reduces further, but more general 20 DEG C
Room temperature cooling water or high, if being directly entered cold water cooling from first segment hot water storgae cable out,
Temperature decrease can cause part non-polar material crystallization in sheath material not exclusively, to affect the machinery of sheath material
Physical property and service life.So, from first segment hot water storgae out after, in addition it is also necessary to by cable in atmosphere
Distribute a part of heat, reduce temperature.The remaining tender feeling condition at take-up reel according to speed of production and cable, to the greatest extent
Amount increases air cooled length, to ensure non-polar material sufficient crystallising in sheath material.
Be finally cold water cooling, the cable cover(ing) external skin temperatures after one section of air natural cooling with room
Relatively, but owing to sheath has certain thickness, the temperature of jacket surface has lowered temperature, but protects
Heat within Tao has not the most distributed, and in order to the temperature of sheath internal layer also be lowered, is necessary for using cold
Water cools down.Usually, sheath cooling water is all to use heat exchange circulation equipment administration.
Also comprising the step that first sample confirms between described step (6) and step (7), this step is by step
(6) specification of the material grain sorted out at the beginning in checks；Between described step (7) and step (8)
Also comprising the step of product inspection, this step is to carry out quality inspection by being dried complete material grain in step (7),
Pick out underproof product, the most qualified product is carried out the packaging warehouse-in of step (8).
The packaging of plastics generally uses plastic foil to add the mode of kraft paper now, and this manner of packing has the best
Humidity resistance.Before extrusion sheath, if plastic packaging bag has broken a seal or breakage, it is necessary to plastics are entered
Row is dried, and baking temperature 70 DEG C, 2-4 hour drying time, baking temperature can not be too high, and the time is not
Can be long, portion of material in plastics otherwise may be caused to decompose, preferably with vacuum dryer.For bag
The plastics installed, then without being dried.
My company the most once ran into such situation: my company uses true qualities FRPE material and adds Masterbatch and mix
Close the mode determining color, when the material mixed is dried, because temperature is too high so that color masterbatch
EVA composition in material is heated tacky by the FRPE material pockets of phenomenon of bonding, if it find that not in time, and will
Extruder is caused to take off the serious consequence of material.
Carry out halogen-free anti-flaming polyolefin by above-mentioned production technology and protect the extrusion of optical fiber material (sheath), through sending UL beautiful
State's test chamber test, test result is as follows:
Above the preferred embodiment for the present invention is explained in detail, but the invention is not restricted to above-mentioned embodiment party
Formula, in the ken that those of ordinary skill in the art are possessed, it is also possible to without departing from present inventive concept
On the premise of make a variety of changes.
Many other can be made without departing from the spirit and scope of the present invention to change and remodeling.Should be appreciated that this
Invention is not limited to specific embodiment, and the scope of the present invention is defined by the following claims.
Claims (9)
1. a halogen-free anti-flaming polyolefin optical fiber material, it is characterised in that use and comprise following component and weight portion
Raw material make:
Low Density Polyethylene (LTPE) 10～15 weight portion；
Ethylene-vinyl acetate copolymer (EVA) 30～35 weight portion；
Fire retardant 55～60 weight portion；
Compatilizer 2～6 weight portion；
Synergist 2 weight portion；
Processing aid 0.5～5 weight portion；
Above-mentioned fire retardant is organic phosphorus flame retardant, or is, with Mg (OH)2、AL(OH)3It is main, then is aided with
SbO2Fire retardant.
2. a kind of halogen-free anti-flaming polyolefin optical fiber material as claimed in claim 1, it is characterised in that: described LTPE
For TAFMER resin or Exact resin；
Described organic phosphorus flame retardant is phosphor nitrogen combustion inhibitor, in terms of the gross weight of phosphor nitrogen combustion inhibitor, and the quality of phosphorus
Mark is 22.1～23.5%, and the mass fraction of nitrogen is 21%.
Described processing aid is a kind of or many in stearic acid, magnesium stearate, white oil, organic silicone oil and paraffin
The combination planted.
3. the production technology of a kind of halogen-free anti-flaming polyolefin optical fiber material described in claim 1～2, comprises following
Step:
(1) dispensing；Weigh Low Density Polyethylene (LTPE) 10～15 weight portion by weight ratio；Ethylene-
Acetate ethylene copolymer (EVA) 30～35 weight portion；Fire retardant 55～60 weight portion；Compatilizer 2～6 weight
Amount part；Synergist 2 weight portion；Processing aid 0.5～5 weight portion；
(2) banburying；The dispensing weighed in step (1) mixing is added banbury and carries out mixing plasticizing, and
Carry out vacuum water divisional processing, final extrusion molding；
(3) cooling；The product of step (2) extrusion molding is quickly cooled down, make mixing after product
Crystallization rapidly, reduces surface temperature, prevents product inter-adhesive；
(4) pelletizing；Product after cooling in step (3) is sent into pelleter pelletizing；
(5) dehydration；The material grain discharged in pelleter feeding centrifuge dewatering machine is dehydrated, tentatively filters
Surface moisture, it is simple to subsequent sort；
(6) sorting；Material grain after dehydration is sent into vibrosieve sorting, simultaneously by adjusting Vibration Screen mesh
Footpath arranges and sorts out bigger and less defective material grain, selects the material grain that size is relatively uniform；
(7) it is dried；Equal refining grain sorting obtained is delivered to be dried agitator by conveying fan and carries out pre-
Mixing is dried；
(8) packaging warehouse-in；By being dried, complete material particle packing is good, warehouse-in.
4. production technology as claimed in claim 3, it is characterised in that: described banbury by charging aperture to going out
Material mouth is divided into first to the tenth totally ten warm areas, and wherein the heating-up temperature of the first warm area is 130～140 DEG C, the
The heating-up temperature of two to the 9th warm areas is 150～170 DEG C, and the heating-up temperature of the tenth warm area is 160～185 DEG C；
The screw slenderness ratio of described banbury is 20～25, and compression ratio is 1～1.5；
The machine thorax of described banbury and screw rod all comprise cooling body, and described machine thorax uses blower fan to dry by force refrigeration
Cooling body, described screw rod use toward pitch note coolant cooling body；
The temperature accuracy of each warm area of described banbury controls in ± 2 DEG C；Four warm areas after described banbury
The temperature difference less than or equal to 10 DEG C.
5. production technology as claimed in claim 4, it is characterised in that: ten warm areas of described banbury are extremely
Comprise bringing-up section, melt zone, melt conveying zone, mixing section, homogenizing zone, head metering section less；Its temperature
Controlling parameter is: feeding section 130 DEG C, melt zone 160 DEG C, melt conveying zone 160～180 DEG C, mixing section
160 DEG C, homogenizing zone 180 DEG C, head metering section 185 DEG C.
6. production technology as claimed in claim 5, it is characterised in that: described first warm area is feed zone temperature
District, described tenth warm area is discharging section warm area.
7. production technology as claimed in claim 3, it is characterised in that: described step (1) and step (2)
Between also comprise stirring mixing step, this step be by step (1) all dispensings send into stirring mixing
Machine carries out high-speed stirred mixing, and mixed raw material is ultimately delivered to the banbury in step (2).
8. production technology as claimed in claim 3, it is characterised in that: the cooling in described step (3) is adopted
Sub-sectional cooling mode, described sub-sectional cooling is used to comprise hot water cooling section, air cooling section and cold water cooling successively
Section；The hot water temperature of described hot water cooling section is more than or equal to 75 DEG C；；Described step (6) and step (7) it
Between also comprise the step that first sample confirms, this step is the specification of the material grain that will sort out at the beginning in step (6)
Check；Also comprising the step of product inspection between described step (7) and step (8), this step is
Carry out quality inspection by step (7) is dried complete material grain, pick out underproof product, will close completely
The product of lattice carries out the packaging warehouse-in of step (8).
9. production technology as claimed in claim 3, it is characterised in that: the dry temperature in described step (7)
Degree is 70 DEG C, and drying time is 2～4 hours, and described dry agitator is the dry stirring of vacuum dryer
Bucket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425073.5A CN105885183A (en) | 2014-08-27 | 2014-08-27 | Halogen-free flame retardant polyolefin fiber material and production technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425073.5A CN105885183A (en) | 2014-08-27 | 2014-08-27 | Halogen-free flame retardant polyolefin fiber material and production technology thereof |
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| Publication Number | Publication Date |
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| CN105885183A true CN105885183A (en) | 2016-08-24 |
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ID=57000646
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189717A (en) * | 2021-05-12 | 2021-07-30 | 四川天邑康和通信股份有限公司 | Optical fiber of MPO/MTP type connector and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942141A (en) * | 2009-07-10 | 2011-01-12 | 广东华声电器实业有限公司 | Low-smoke halogen-free flame retardant cable material and preparation method thereof |
-
2014
- 2014-08-27 CN CN201410425073.5A patent/CN105885183A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942141A (en) * | 2009-07-10 | 2011-01-12 | 广东华声电器实业有限公司 | Low-smoke halogen-free flame retardant cable material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189717A (en) * | 2021-05-12 | 2021-07-30 | 四川天邑康和通信股份有限公司 | Optical fiber of MPO/MTP type connector and preparation method thereof |
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