CN209722011U - A kind of preparation system of optical cable loose tube raw material - Google Patents
A kind of preparation system of optical cable loose tube raw material Download PDFInfo
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- CN209722011U CN209722011U CN201822195666.3U CN201822195666U CN209722011U CN 209722011 U CN209722011 U CN 209722011U CN 201822195666 U CN201822195666 U CN 201822195666U CN 209722011 U CN209722011 U CN 209722011U
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- optical cable
- loose tube
- esterification
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Abstract
The utility model relates to optical fiber secondary coating raw material preparation technical fields; it discloses a kind of preparation system of optical cable loose tube raw material, including the process according to preparation be sequentially arranged Weighing device, be mixed installation, reaction kettle of the esterification, precondensation kettle, whole polycondensation vessel, for carrying out pelletizing to the whole polymers after final polycondensation reaction the pelleter of pellet, the polymerization purifying plant for carrying out polymerization purification to the pellet after pelletizing is made, for the pellet after purification screen and purified treatment is screened and purified device.The utility model improves the stability of optical cable loose tube material property, and then improves the flexibility and antiseepage oiliness of optical cable loose tube, while reducing the diameter change of long fluctuation and Loose tube more than the optical cable after optical fiber secondary coating.
Description
Technical field
The utility model relates to optical fiber secondary coating raw material preparation technical fields, and in particular to a kind of optical cable loose tube is former
The preparation system of material.
Background technique
In optical fiber secondary coating technique, filling fiber paste after the optical fiber boundling different colours is needed to enter by engineering plastic
Expect in the round tube (Loose tube) extruded.Loose tube, which can play, loosely to be placed optical fiber, protects optical fiber from internal stress and outer
The effect that portion's lateral pressure influences, generallys use PBT (polybutylene terephthalate (PBT)) or polypropylene (PP) etc. and is made.
Raw material currently used for extruding optical cable loose tube generallys use PBT (polybutylene terephthalate (PBT)), although PBT
With outstanding processing performance, but under certain specific service conditions, the required pine set for optical fiber secondary coating
The bending radius very little of pipe is easily snapped off using the optical cable loose tube that PBT is manufactured, and uses the polypropylene of polypropylene PP or modification
The Loose tube of PP manufacture is then easy to appear permeability phenomenon.
Therefore there is an urgent need to find the good Loose tube raw material of a kind of more soft and antiseepage oiliness to replace for the prior art
Existing PBT and polypropylene (PP) raw material.
The admissible optional scheme of one kind is using TPEE (thermoplastic polyester elastomer) raw material.Hard section in TPEE
It is typically chosen high rigidity crystallinity PBT, soft segment then selects noncrystalline polyethers (such as polyglycol ether PEG, polypropylene glycol ether
PPG, polybutadiene alcohol ether PTMEG etc.) or aliphatic polyester (such as polylactide PLA, polyglycolide PGA, polycaprolactone (PCL)).
Using polyethers is the TPEE cold resistance of soft segment preparation, flexibility and hydrolytic resistance is preferable but fast light, heat resistance is poor；With aliphatic
Polyester is the TPEE heat-resistant aging of soft segment preparation, good weatherability, but hydrolytic resistance is poor.It, can be according to TPEE in actual production
Purposes select different proportions, freely design the hard and soft chain segment ratio of block copolymer.Soft, hard segment type, length
Have an impact with performance of the content to TPEE.And currently there are TPEE belong to universal polyester-polyether type TPEE,
Its heat resistance, lower temperature resistance, chemical-resistance and processing performance relatively balance.
But above-mentioned universal TPEE raw material is due to during the preparation process that by purification, raw material inside is not contained
A small amount of small molecule object, such as p-phthalic acid PTA, 1,4-butanediol BDO, tetrahydrofuran, polyethers and small molecule chain
Polybutylene terephthalate (PBT) PBT etc..The presence of these small molecule objects affects the stability of TPEE performance, leads to production
Optical fiber secondary coating is had the following problems with Loose tube: first is that the shrinking percentage of material is unstable, the optical cable after leading to secondary coating
Remaining long fluctuation is big；Second is that the unstable of shrinking percentage also causes Loose tube diameter fluctuation larger, to reduce the quality of Loose tube
And reliability.
Utility model content
To solve the above-mentioned problems, the utility model proposes a kind of preparation systems of optical cable loose tube raw material, it is intended to improve
The stability of optical cable loose tube material property, and then improve the flexibility and antiseepage oiliness of optical cable loose tube, while reducing optical cable
The diameter change of long fluctuation and Loose tube more than optical cable after secondary coating.Specific technical solution is as follows:
A kind of preparation system of optical cable loose tube raw material, matches including what the process according to preparation was sequentially arranged for raw material
The Weighing device of material, is used for mixed object the mixing installation for mixing the raw material after ingredient
Material carries out esterification to generate the reaction kettle of the esterification of carboxylate, for carrying out prepolymerization reaction to the carboxylate after esterification
To generate the precondensation kettle of prepolymer, for carrying out final polycondensation reaction to the prepolymer after prepolymerization reaction to generate whole polymers
Whole polycondensation vessel, for carrying out pelletizing to the whole polymers after final polycondensation reaction the pelleter of pellet is made, for after to pelletizing
Pellet carries out the polymerization purifying plant of polymerization purification, for screen to the pellet after purification and purified treatment is screened and purified
Device.
Above-mentioned raw material ingredient includes the ingredient of soft segment raw material and matching for hard section raw material for participating in esterification
Material.
Preferably, the Weighing device includes BDO (1,4-butanediol) metering device and DMT (terephthalic acid (TPA) two
Methyl esters) metering device.
Above-mentioned preparation system increases compared with prior art is provided with polymerization purifying plant, polymerize to the pellet after pelletizing
Purification, the small molecule object after polymerization purification in its pellet are therefrom precipitated, and which thereby enhance optical cable loose tube material property
Stability, and then reduce the diameter change of long fluctuation and Loose tube more than the optical cable after optical fiber secondary coating, to improve pine
The q&r of casing.
In the utility model, the catalyst feeding device for promoting esterification is connected on the reaction kettle of the esterification,
Catalyst metering apparatus is provided on the catalyst feeding device.
Preferably, the catalyst feeding device includes butyl titanate feeding device and magnesium acetate feeding device.
Preferably, the polymerization purifying plant is rotative nickel reactor.
Preferably, described is stainless steel revolving reaction kettle.
Preferably, the device that is screened and purified is fluidized bed.
The above-mentioned device that is screened and purified is using fluidized bed, and available particle is uniform and the higher optical cable loose tube of degree of purification is former
The pellet of material.
A kind of preparation system of optical cable loose tube raw material of the utility model further includes being arranged in described to be screened and purified device
Baling press later.
Using the preparation system of above-mentioned optical cable loose tube raw material, its preparation process flow is as follows:
(1) ingredient: taking 1,4-butanediol BDO, dimethyl terephthalate (DMT) DMT and catalyst for esterification reaction is material, is made
Ingredient is carried out with Weighing device；Wherein the molar ratio of BDO and DMT is 1.7:1~2:1；
(2) mixing: mixing and blending machine is used, BDO is uniformly mixed with DMT；
(3) it is esterified: adding mixture into reaction kettle of the esterification, and esterification is added using catalyst feeding device and urges
Agent carries out esterification, obtains carboxylate；Wherein, the weight of catalyst for esterification reaction is the 0.12 of BDO and DMT total weight
~0.20%；
(4) pre-polymerization: the carboxylate Jing Guo esterification is transferred in precondensation kettle, is carried out prepolymerization reaction, is obtained pre-
Polymers；
(5) poly- eventually: prepolymer being transferred in whole polycondensation vessel, final polycondensation reaction is carried out, obtains whole polymers；
(6) pelletizing: whole polymers is transferred to pelleter, is cut into pellet；
(7) it purifies: pellet being transferred to purified reaction kettle, carries out polymerization purification, so that the small molecule object in pellet is therefrom
It is precipitated；
(8) it screens: using fluidized bed, screening and purified treatment are carried out to the pellet after purification.
It is excellent by rational proportion BDO (1,4-butanediol) and DMT (dimethyl terephthalate (DMT)) in above-mentioned preparation process
The hard and soft chain segment ratio for having changed block copolymer, improves the comprehensive performance of optical cable loose tube raw material, so that the optical cable produced
Loose tube has both good flexibility and antiseepage oiliness.
(9) it is packaged: the optical cable loose tube raw material after screening being packaged using baling press.
Wherein, in the esterification step, the technological parameter of esterification are as follows: 240~245 DEG C of temperature, pressure 40~
50Kpa, the time 2.0~2.5 hours.
Wherein, in the pre-polymerization process, the technological parameter of prepolymerization reaction are as follows: 245~248 DEG C of temperature, pressure 20~
25Kpa, the time 0.75~0.8 hour.
Wherein, in the end poly- process, the technological parameter of final polycondensation reaction are as follows: 242~248 DEG C of temperature, pressure 100~
120pa, the time 3.0~3.5 hours.
Wherein, in the purification process, it polymerize the technological parameter of purification are as follows: 190~200 DEG C of temperature, pressure 0~
2Kpa, the time 3.0~3.5 hours.
Wherein, the catalyst for esterification reaction is titanium system catalyst for esterification reaction.
Preferably, titanium system catalyst for esterification reaction is butyl titanate, or is butyl titanate and magnesium acetate
Mixture.
The beneficial effects of the utility model are:
First, a kind of preparation system of optical cable loose tube raw material of the utility model increases and is provided with polymerization purifying plant,
Polymerization purification is carried out to the pellet after pelletizing, the small molecule object after polymerization purification in its pellet is therefrom precipitated, and thus improves
The stability of optical cable loose tube material property, and then reduce long fluctuation and Loose tube more than the optical cable after optical fiber secondary coating
Diameter change, to improve the q&r of Loose tube.
Second, a kind of preparation system of optical cable loose tube raw material of the utility model is screened and purified device and uses fluidized bed,
Available particle is uniform and the pellet of the higher optical cable loose tube raw material of degree of purification.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the preparation system of optical cable loose tube raw material of the utility model.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and cannot be used as a limitation the protection model of limitation the utility model
It encloses.
Embodiment 1:
It is as shown in Figure 1 a kind of embodiment of the preparation system of optical cable loose tube raw material of the utility model, including according to
The process of preparation be sequentially arranged for the Weighing device of raw material ingredient, for the raw material after ingredient to be mixed
Mixing installation, for mixed material to be carried out esterification to generate the reaction kettle of the esterification of carboxylate, be used for pair
Carboxylate after esterification carry out prepolymerization reaction to generate the precondensation kettle of prepolymer, for pre- after prepolymerization reaction
Polymers carry out final polycondensation reaction with generate whole polymers whole polycondensation vessel, for after final polycondensation reaction whole polymers carry out pelletizing with
The pelleter of pellet, the polymerization purifying plant for carrying out polymerization purification to the pellet after pelletizing is made, for after to purification
Pellet carries out screening and purified treatment is screened and purified device.
Above-mentioned raw material ingredient includes the ingredient of soft segment raw material and matching for hard section raw material for participating in esterification
Material.
Preferably, the Weighing device includes BDO (1,4-butanediol) metering device and DMT (terephthalic acid (TPA) two
Methyl esters) metering device.
Above-mentioned preparation system increases compared with prior art is provided with polymerization purifying plant, polymerize to the pellet after pelletizing
Purification, the small molecule object after polymerization purification in its pellet are therefrom precipitated, and which thereby enhance optical cable loose tube material property
Stability, and then reduce the diameter change of long fluctuation and Loose tube more than the optical cable after optical fiber secondary coating, to improve pine
The q&r of casing.
This carries out being connected with the catalyst for promoting esterification on the reaction kettle of the esterification in screening and purified treatment
Feeding device is provided with catalyst metering apparatus on the catalyst feeding device.
Preferably, the catalyst feeding device includes butyl titanate feeding device and magnesium acetate feeding device.
Preferably, the polymerization purifying plant is rotative nickel reactor.
Preferably, described is stainless steel revolving reaction kettle.
Preferably, the device that is screened and purified is fluidized bed.
The above-mentioned device that is screened and purified is using fluidized bed, and available particle is uniform and the higher optical cable loose tube of degree of purification is former
The pellet of material.
This preparation system for carrying out a kind of optical cable loose tube raw material of screening and purified treatment further includes being arranged in the sieve
Select the baling press after purification device.
Embodiment 2:
Using a kind of preparation system of optical cable loose tube raw material of embodiment 1, its preparation process flow is as follows:
(1) ingredient: taking 1,4-butanediol BDO, dimethyl terephthalate (DMT) DMT and catalyst for esterification reaction is material, is made
Ingredient is carried out with Weighing device；Wherein the molar ratio of BDO and DMT is 1.7:1~2:1；
(2) mixing: mixing and blending machine is used, BDO is uniformly mixed with DMT；
(3) it is esterified: adding mixture into reaction kettle of the esterification, and esterification is added using catalyst feeding device and urges
Agent carries out esterification, obtains carboxylate；Wherein, the weight of catalyst for esterification reaction is the 0.12 of BDO and DMT total weight
~0.20%；
(4) pre-polymerization: the carboxylate Jing Guo esterification is transferred in precondensation kettle, is carried out prepolymerization reaction, is obtained pre-
Polymers；
(5) poly- eventually: prepolymer being transferred in whole polycondensation vessel, final polycondensation reaction is carried out, obtains whole polymers；
(6) pelletizing: whole polymers is transferred to pelleter, is cut into pellet；
(7) it purifies: pellet being transferred to purified reaction kettle, carries out polymerization purification, so that the small molecule object in pellet is therefrom
It is precipitated；
(8) it screens: using fluidized bed, screening and purified treatment are carried out to the pellet after purification.
It is excellent by rational proportion BDO (1,4-butanediol) and DMT (dimethyl terephthalate (DMT)) in above-mentioned preparation process
The hard and soft chain segment ratio for having changed block copolymer, improves the comprehensive performance of optical cable loose tube raw material, so that the optical cable produced
Loose tube has both good flexibility and antiseepage oiliness.
(9) it is packaged: the optical cable loose tube raw material after screening being packaged using baling press.
Wherein, in the esterification step, the technological parameter of esterification are as follows: 240~245 DEG C of temperature, pressure 40~
50Kpa, the time 2.0~2.5 hours.
Wherein, in the pre-polymerization process, the technological parameter of prepolymerization reaction are as follows: 245~248 DEG C of temperature, pressure 20~
25Kpa, the time 0.75~0.8 hour.
Wherein, in the end poly- process, the technological parameter of final polycondensation reaction are as follows: 242~248 DEG C of temperature, pressure 100~
120pa, the time 3.0~3.5 hours.
Wherein, in the purification process, it polymerize the technological parameter of purification are as follows: 190~200 DEG C of temperature, pressure 0~
2Kpa, the time 3.0~3.5 hours.
Wherein, the catalyst for esterification reaction is titanium system catalyst for esterification reaction.
Preferably, titanium system catalyst for esterification reaction is butyl titanate, or is butyl titanate and magnesium acetate
Mixture.
Embodiment 3:
The optical cable loose tube raw material prepared using embodiment 1 and embodiment 2 is extruded into outer with the speed of production of 300m/min
Diameter is the optical cable loose tube of φ 1.8mm, is then measured to caliber (outer diameter) variable quantity of the optical cable loose tube extruded out, and
It is compared with the optical cable loose tube extruded out using universal TPEE raw material, as a result as follows:
| The present invention | Universal TPEE | |
| Caliber (outer diameter) and variable quantity | φ1.8±0.1mm | φ1.8±0.2mm |
Embodiment 4:
Optical cable loose tube is made using embodiment 3, carries out bending failure test, still maintains intact after detecting its bending
Minimum bending radius, and be compared with the optical cable loose tube extruded out using universal TPEE raw material, it is as a result as follows:
| The present invention | Universal TPEE | |
| Minimum bending radius | 25~35mm | 50~80mm |
Embodiment 5:
Optical cable loose tube is made using embodiment 3, carries out optical fiber secondary coating test, the light after detecting optical fiber secondary coating
Long change rate more than cable, and be compared with the optical cable loose tube extruded out using universal TPEE raw material, it is as a result as follows:
| The present invention | Universal TPEE | |
| Remaining long change rate | 0.1-0.3% | Greater than 1.2% |
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these change
It also should be regarded as the protection scope of the utility model into retouching.
Claims (7)
1. a kind of preparation system of optical cable loose tube raw material, which is characterized in that the use being sequentially arranged including the process according to preparation
In the Weighing device of raw material ingredient, for the raw material after ingredient to be mixed mixing installation, be used for by
Mixed material carries out esterification to generate the reaction kettle of the esterification of carboxylate, for carrying out to the carboxylate after esterification
Prepolymerization reaction with generate prepolymer precondensation kettle, for after prepolymerization reaction prepolymer carry out final polycondensation reaction with life
At the whole polycondensation vessel of whole polymers, for the pelleter of pellet to be made to the whole polymers progress pelletizing after final polycondensation reaction, is used for
The polymerization purifying plant of polymerization purification is carried out, for carrying out screening and purified treatment to the pellet after purification to the pellet after pelletizing
Be screened and purified device.
2. a kind of preparation system of optical cable loose tube raw material according to claim 1, which is characterized in that the Weighing
Device includes BDO metering device and DMT metering device.
3. a kind of preparation system of optical cable loose tube raw material according to claim 1, which is characterized in that the esterification
It is connected with the catalyst feeding device for promoting esterification on kettle, is provided with catalyst gauge on the catalyst feeding device
Measure device.
4. a kind of preparation system of optical cable loose tube raw material according to claim 3, which is characterized in that the catalyst adds
Expect that device includes butyl titanate feeding device and magnesium acetate feeding device.
5. a kind of preparation system of optical cable loose tube raw material according to claim 1, which is characterized in that the polymerization purification
Device is rotative nickel reactor.
6. a kind of preparation system of optical cable loose tube raw material according to claim 1, which is characterized in that described to be screened and purified
Device is fluidized bed.
7. a kind of preparation system of optical cable loose tube raw material according to claim 1, which is characterized in that further include being arranged in
The baling press being screened and purified after device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822195666.3U CN209722011U (en) | 2018-12-26 | 2018-12-26 | A kind of preparation system of optical cable loose tube raw material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822195666.3U CN209722011U (en) | 2018-12-26 | 2018-12-26 | A kind of preparation system of optical cable loose tube raw material |
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| CN209722011U true CN209722011U (en) | 2019-12-03 |
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| CN201822195666.3U Active CN209722011U (en) | 2018-12-26 | 2018-12-26 | A kind of preparation system of optical cable loose tube raw material |
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2018
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