CN106700431A - Preparation method for PBT color masterbatch used for optical cable - Google Patents
Preparation method for PBT color masterbatch used for optical cable Download PDFInfo
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- CN106700431A CN106700431A CN201510443405.7A CN201510443405A CN106700431A CN 106700431 A CN106700431 A CN 106700431A CN 201510443405 A CN201510443405 A CN 201510443405A CN 106700431 A CN106700431 A CN 106700431A
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Abstract
The invention discloses a preparation method for PBT color masterbatch used for an optical cable. The preparation method mainly comprises the following steps: 1) mixing a dispersing agent with a pigment and carrying out pre-dispersion; 2) adding the dispersed dispersing agent and pigment into PBT resin and carrying out mixing under stirring; and 3) after completion of stirring, carrying out extrusion and granulation via an extruder. During processing, the dispersing agent is mixed with the pigment and pre-dispersion is carried out before mixing of the pigment with the PBT resin; since the pigment is pre-dispersed and then mixed with the PBT resin, the pigment can be uniformly dispersed in the PBT resin when a mixture of the pigment and the dispersing agent is mixed with the PBT resin, so the color of the PBT color masterbatch is allowed to be uniform and consistent, and the performance of the PBT color masterbatch is allowed to be consistent; and an optical cable prepared from the PBT color masterbatch in which the pigment is uniformly distributed has extremely strong tear growth resistance and flexural resistance and long service life.
Description
Technical field
The present invention relates to a kind of macromolecular material, more specifically, it relates to a kind of preparation method of optical cable with PBT color masterbatch.
Background technology
Polybutylene terephthalate (PBT)（PBT）It is a kind of crystalline thermoplastic polyester's resin, it is widely used in the fields such as electronic apparatus, auto industry, construction material, machine components, packaging because it has excellent combination property, and is five big general to use engineering plastics with the nominal such as PPS, PC, POM, PA.Generally, PBT products are wanted and color coordination, the invention of Application No. 201210373184.7 provides a kind of PBT high density color master batch and preparation method thereof, PBT and related raw material are directly mixed 5~30 minutes afterwards in mixer, directly extruded using double screw extruder, granulation, but the PBT Masterbatch produced using this kind of method, pigment is when being mixed into PBT, PBT is not good with the mixed effect of pigment, the dispersion effect for so easily causing pigment is not good, PBT Masterbatch shades are easily caused to differ, spottiness, reduce the physical property and product quality of PBT Masterbatch.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of preparation method that can make the optical cable that pigment is homogenously mixed together with PBT with PBT color masterbatch.
To achieve the above object, the invention provides following technical scheme：A kind of optical cable preparation method of PBT color masterbatch,
1）Dispersant is mixed with pigment, pre-dispersion operation is carried out；
2）By step 1）In it is pre-dispersed finish after compound add PBT resin in, stirring mixing；
3）After stirring is finished, extruded by extruder, pelletized.
Preferably, the step 1）In pre-dispersion operation include for dispersant and pigment carrying out primary married operation.
Preferably, the dispersant mixed after finishing is ground with pigment.
Preferably, the temperature of grinding is 100 DEG C~120 DEG C.
Preferably, after grinding is finished, carrying out whole level married operation again to dispersant and pigment.
Preferably, step 1）The middle granular size for using pigment is 10um~20um.
Preferably, step 2）Middle use horizontal mixer is stirred married operation.
Preferably, step 2）When a length of 2~3h of middle stirring mixing.
By using above-mentioned technical proposal, in processing, before pigment mixes with PBT resin, first dispersant and pigment are mixed, increased pre-dispersion operation, pigment is broken up in advance, then pigment is mixed with PBT resin again, now the mixture of pigment and dispersant with PBT resin when mixing, pigment can be spread out with visibly homogeneous in PBT resin, now pigment can be blended in PBT resin with visibly homogeneous, make the color uniformity of PBT Masterbatch, ensure that the performance of PBT Masterbatch is consistent, it is made after ferrule using the uniform PBT Masterbatch of pigment distribution, ferrule has extremely strong tear-resistant property, warping resistance and service life.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the optical cable preparation method embodiment of PBT color masterbatch.
Specific embodiment
Reference picture 1 is described further to optical cable with the preparation method embodiment of PBT color masterbatch.
A kind of optical cable preparation method of PBT color masterbatch,Dispersant is mixed with pigment first,Carry out pre-dispersion operation,The color of pigment can be selected according to using needing,Conventional having is red,It is blue,It is green,Ash,The color such as white,EL-2410 type inorganic pigment dispersant of the dispersant from the production of Dongguan City Yi Lian Chemical Industry Science Co., Ltd,It is pre-dispersed finish after,The dispersant that will disperse again after finishing is added in PBT resin with the compound of pigment,Married operation is stirred using mixer,The RD-W type mixers of mixer model Dongguan City such as ancient cooking vessel plant equipment Co., Ltd production,Mixer is preferably horizontal mixer,The charging aperture of horizontal mixer is relatively low,The feeding of compound PBT resin can very easily be realized,A length of 2~3h during stirring,Pigment can so be made,Dispersant and PBT resin are sufficiently mixed,Mechanized Processing,Greatly improve production efficiency,Reduce production cost,Stirring duration is determined according to the dispersion effect of pigment,The performance effect of dispersant is good,Pigment dispersion is abundant,Can suitably shorten duration in stirring,Reducing energy consumption,In general production process,Stir when a length of 2.5h of mixing,After stirring is finished,By PBT resin,Pigment and mixture of dispersing agents are extruded by extruder,Granulation.
Compared to directly by dispersant, pigment and PBT resin mix, first pigment is broken up, pigment is in the mixing in later stage, can be distributed in PBT resin with visibly homogeneous, so after PBT Masterbatch is made, the color of PBT Masterbatch can keep uniformity, the inner molecular structure of PBT Masterbatch is sufficiently stable, the performance of whole PBT Masterbatch can be consistent, it is made after ferrule using PBT Masterbatch, the color of ferrule can ensure unanimously, it is not in deep mixed situation, molecular structure and bonding strength between whole ferrule is sufficiently stable, the integraty of ferrule is very good, ferrule has extremely strong tear-resistant property, warping resistance and service life.
In the present embodiment, pre-dispersion operation includes three steps, dispersant is mixed with pigment first, carry out primary married operation, dispersant and pigment after finishing will then be mixed to be put into and carry out high temperature grinding in grinder, the dispersant and pigment that finally grinding is finished carry out a minor final married operation again, first carry out primary mixing, then it is being ground, grinding carries out a minor final mixing again after finishing, repeatedly mixing, the dispersion mixing between pigment and dispersant can be made to reach most preferably, and then mixed effect of the compound inside PBT plastic cement can be made to reach most preferably, primary mixing and whole level mixing are mixed using mixer, mixer can use step 2）In mixer, Mechanized Processing greatly improves production efficiency, reduces production cost.
The LB -25 that grinder is produced using Nanjing Li Desheng Machinery Co., Ltd.s, high temperature grinding can strengthen the action effect of dispersant, improve the dispersion effect of pigment, pigment can be made uniformly to be disperseed, grinding temperature is 100 DEG C~120 DEG C, temperature is too low, and the action effect of dispersant is not good, and dispersion effect is bad, temperature is too high, dispersant can degrade, and not have peptizaiton, therefore, in the present embodiment, grinding temperature is preferably 110 DEG C, in dispersant at this temperature, pigment sufficiently can be disperseed.
In the present embodiment,After PBT Masterbatch is made ferrule,Ferrule can be shunk afterwards to the cold,The index for weighing the contracted length of ferrule is the remaining length of ferrule,Under normal circumstances,Remaining a length of 0.001%/1000th of ferrule,In actual production,Found by long-term exploration and experiment,The granular size of pigment,It is the key factor of the remaining length for determining later stage ferrule,Therefore,In the present embodiment,Granular size from pigment is 10um~20um,,Particle is excessive,The remaining length for easily causing fiber optics sleeve pipe is long,The particle of pigment is too small,It is easily caused production cost excessive,And,Excessively tiny pigment,In production,In having the potential safety hazard the present embodiment for exploding,Granules of pigments size is 15um,When granules of pigments is preferably 15um,The remaining length of the ferrule being made can be stablized 0.0005%,And,Pigment production ferrule out using 15um has very excellent tinting strength, tinting power,Weatherability,Temperature tolerance and light resistance.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment, and all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of optical cable preparation method of PBT color masterbatch, it is characterised in that：
1）Dispersant is mixed with pigment, pre-dispersion operation is carried out；
2）By step 1）In it is pre-dispersed finish after compound add PBT resin in, stirring mixing；
3）After stirring is finished, extruded by extruder, pelletized.
2. the optical cable according to claim 1 preparation method of PBT color masterbatch, it is characterised in that：The step 1）In pre-dispersion operation include for dispersant and pigment carrying out primary married operation.
3. the optical cable according to claim 2 preparation method of PBT color masterbatch, it is characterised in that：The dispersant mixed after finishing is ground with pigment.
4. the optical cable according to claim 3 preparation method of PBT color masterbatch, it is characterised in that：The temperature of grinding is 100 DEG C~120 DEG C.
5. the preparation method of PBT color masterbatch of the optical cable according to claim 3 or 4, it is characterised in that：After grinding is finished, whole level married operation is carried out again to dispersant and pigment.
6. the optical cable according to claim 1 preparation method of PBT color masterbatch, it is characterised in that：Step 1）The middle granular size for using pigment is 10um~20um.
7. the preparation method of PBT color masterbatch of the optical cable according to Claims 2 or 3, it is characterised in that：Step 2）Middle use horizontal mixer is stirred married operation.
8. the preparation method of PBT color masterbatch of the optical cable according to Claims 2 or 3, it is characterised in that：Step 2）When a length of 2~3h of middle stirring mixing.
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| CN201510443405.7A CN106700431A (en) | 2015-07-24 | 2015-07-24 | Preparation method for PBT color masterbatch used for optical cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108453924A (en) * | 2018-03-19 | 2018-08-28 | 浙江恒烨新材料科技有限公司 | A kind of coloring process system of Masterbatch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108453924A (en) * | 2018-03-19 | 2018-08-28 | 浙江恒烨新材料科技有限公司 | A kind of coloring process system of Masterbatch |
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