CN105860447A - Method for modifying thermoplastic polyester elastomer for loose tubes of optical fiber cables - Google Patents
Method for modifying thermoplastic polyester elastomer for loose tubes of optical fiber cables Download PDFInfo
- Publication number
- CN105860447A CN105860447A CN201610479290.1A CN201610479290A CN105860447A CN 105860447 A CN105860447 A CN 105860447A CN 201610479290 A CN201610479290 A CN 201610479290A CN 105860447 A CN105860447 A CN 105860447A
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- Prior art keywords
- thermoplastic polyester
- polyester elastomer
- pbt
- tpee
- polybutylene terephthalate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of material preparation, in particular to a method for modifying thermoplastic polyester elastomer for loose tubes of optical fiber cables. The method includes: mixing the thermoplastic polyester elastomer with polybutylene terephthalate according to a feeding mass ratio of 80:20-20:80, and mixing in an internal mixer with a rotor speed being 40-60r/min under a temperature condition of 240 DEG C to obtain modified thermoplastic polyester elastomer. The method has advantages that the PBT (polybutylene terephthalate) and the thermoplastic polyester elastomer are compatibly mixed according to a simple and feasible melt blending process, on the one hand, a complex processing process is avoided, and on the other hand, only by simple change of a ratio of the TPEE (thermoplastic polyester elastomer) to the PBT and regulation of process conditions such as the temperature and the rotor speed, effective performance control of a TPEE/PBT blended material of the thermoplastic polyester elastomer for the loose tubes of the optical fiber cables can be realized.
Description
Technical field
The present invention relates to technical field of material, be specifically related to the technical method of the blending and modifying to polyester elastomer.
Background technology
Thermoplastic polyester elastomer (TPEE) popular name polyesters rubber or polyester-type thermoplastic elastomer, be high with crystallinity
Melt polyester block as the relatively low amorphous polyethers of hard section (crystallization phase) and glass transition temperature or polyester block as soft
The block copolymer of section (amorphous phase).TPEE material has the good flexibility of elastomeric material concurrently, elasticity is moulded with engineering thermoplastic
The rigidity of material and easy making process.
The performance of TPEE resistance to chemical attack is the most outstanding, and oil resistivity is also fine, this also polyester elastomer two big
Advantage.Ordinary circumstance, many chemical substances will not produce any corrosiveness, such as alkali, acid, amine and glycols to TPEE
Compound, the chemical resistance of TPEE can improve with the increase of hard segment content, resists most of organic solvents and gas
Swelling behavior is the best.Additionally, the waste material of thermoplastic polyester elastomer can recycle, solving some products of rubber and plastic cannot
The difficult problem recycled so that it is become standard, globalization, environmental friendliness shaped material, meet the demand for development of environmental protection.
Up to the present, the TPEE of commercialization is a lot, and the enterprise producing TPEE the earliest has Du Pont and Japan of Japan to spin
Knit company etc..In view of the combination property that TPEE is excellent, its application commercially is more extensive, such as: lifesaving goods,
The aspects such as product waterborne, case and bag, outdoor goods；National defense industry is used for produce field operations sleeping bag, tent etc.；At garment industry,
Owing to TPEE composite fabric product has the excellent characteristics such as waterproof, windproof, ventilative so that it is occupied certain at garment industry
Market；The industries such as this external auto parts machinery, electronic device and closure means have also been obtained and are widely applied.
In optical cable industry, TPEE can be used to production and prepares optical cable Loose tube, is coated on optical fiber surface, improves for optical fiber
Preferably mechanical protection, makes the microbending loss sensitiveness of optical fiber reduce.It is conventionally used to production and prepares the material master of optical cable loose tube
If polybutylene terephthalate (PBT) (PBT) and modified polypropene (PP), both material molding shrinkages and hardness are the most relatively
Greatly, wayward optical cable loose tube size, easily cause optical fiber simultaneously and produce stress damage, shorten its service life.TPEE becomes
Type shrinkage factor is little, simultaneously material softness, but bi-material earlier above, TPEE lacks certain intensity, and with high costs.
Summary of the invention
The technical problem to be solved is to provide the optical cable loose tube polyester of a kind of low cost, high intensity
The blending modification method of body.
Inventive technique scheme is: by thermoplastic polyester elastomer (TPEE) and polybutylene terephthalate (PBT) (PBT) with
After the mass ratio that feeds intake is the ratio mixing of 80: 20～20: 80, in temperature conditions be 240 DEG C, rotor speed be 40～60 revs/min
Banburying in the banbury of clock, obtains modified thermoplastic polyester elastomer.
It is an advantage of the current invention that to utilize simple and easy to do melt-blending process will have the poly-terephthaldehyde of certain compatibility
Acid butanediol ester (PBT) and thermoplastic polyester elastomer (TPEE) are blended, on the one hand without complicated processing technology, on the other hand
Only need simply to change the amount ratio of TPEE and PBT, the process conditions such as regulating and controlling temperature and rotor speed simultaneously, can realize optical cable
Effective control of the TPEE/PBT intermingling material performance of Loose tube thermoplastic polyester elastomer.
One of key of the present invention is the control of the consumption of the polybutylene terephthalate (PBT) (PBT) as intermingling material
System.Consumption is very few to be promoted not quite thermoplastic polyester elastomer (TPEE) performance；And consumption is crossed and material property can be made at most to be partial to
In PBT, this can reduce the combination property of material on the contrary.The two of key are to regulate and control banbury temperature and rotor speed, and it is poly-right to make
Good phase morphology is formed between benzene dicarboxylic acid butanediol ester (PBT) and thermoplastic polyester elastomer (TPEE).
Further, thermoplastic polyester elastomer of the present invention is block copolymer, and density is 1.15g/cm3, fusing point
Being 240 DEG C, wherein polybutylene terephthalate (PBT) section is hard section, and polyethers is soft section, and soft or hard section mass ratio is 75: 25, mole
Ratio is 1: 1.Using hard section is the thermoplastic polyester elastomer of polybutylene terephthalate (PBT), can make thermoplastic polyester elastomer
Body has more preferable compatibility with the polybutylene terephthalate (PBT) component being additionally mixed into, thus it is intact to prepare two-phase interface
Fall into, high performance thermoplastic polyester elastomeric material；Use polybutylene terephthalate (PBT) for being mixed into component, can be made it
The most compatible with thermoplastic polyester elastomer, and its good modulus and intensity can improve the mould of thermoplastic polyester elastomer
Amount and intensity.
Accompanying drawing explanation
Fig. 1 is the optical microscope photograph that comparative example 1 obtains product.
Fig. 2 is the optical microscope photograph that embodiment 1 obtains product.
Fig. 3 is the optical microscope photograph that embodiment 2 obtains product.
Fig. 4 is the optical microscope photograph that embodiment 4 obtains product.
Fig. 5 is the optical microscope photograph that embodiment 5 obtains product.
Fig. 6 is the optical microscope photograph that comparative example 2 obtains product.
Fig. 7 is the embodiment of the present invention 1,2,3,4,5 and the load-deformation curve of comparative example 1,2.
Detailed description of the invention
Embodiment 1
Thermoplastic polyester elastomer (TPEE) 80kg, polybutylene terephthalate (PBT) (PBT) 20kg part are joined banbury
In, melt blending 3 minutes, compression molding after discharging under the temperature of 240 DEG C, the rotor speed of 50 revs/min.
Embodiment 2
Thermoplastic polyester elastomer (TPEE) 60 kg, polybutylene terephthalate (PBT) (PBT) 40 kg are joined banbury
In, melt blending 3 minutes, compression molding after discharging under the temperature of 240 DEG C, the rotor speed of 50 revs/min.
Embodiment 3
Thermoplastic polyester elastomer (TPEE) 50 kg, polybutylene terephthalate (PBT) (PBT) 50 kg are joined banbury
In, melt blending 3 minutes, compression molding after discharging under the temperature of 240 DEG C, the rotor speed of 50 revs/min.
Embodiment 4
Thermoplastic polyester elastomer (TPEE) 40 kg, polybutylene terephthalate (PBT) (PBT) 60 kg are joined banbury
In, melt blending 3 minutes, compression molding after discharging under the temperature of 240 DEG C, the rotor speed of 50 revs/min.
Embodiment 5
Thermoplastic polyester elastomer (TPEE) 20 kg, polybutylene terephthalate (PBT) (PBT) 80 kg are joined banbury
In, melt blending 3 minutes, compression molding after discharging under the temperature of 240 DEG C, the rotor speed of 50 revs/min.
Comparative example 1
Thermoplastic polyester elastomer (TPEE) 100 kg is joined in banbury, the temperature of 240 DEG C, 50 revs/min turn
Melt blending 8 minutes under rotor speed, compression molding after discharging.
Comparative example 2
Polybutylene terephthalate (PBT) (PBT) 100 kg joined in banbury, the temperature of 240 DEG C, 50 revs/min
Melt blending 3 minutes under rotor speed, compression molding after discharging.
The thermoplastic polyester elastomer (TPEE) used in the present invention is a kind of density 1.15g/cm3, fusing point is 240 DEG C
Block copolymer；The polybutylene terephthalate (PBT) (PBT) used be a kind of density be 1.45g/cm3, fusing point is 220 DEG C
Bio-compatible and Biodegradable polymer material.
Analyze:
Fig. 1,6 it is that comparative example 1, comparative example 2 shoot the optical photograph in SEM after obtaining product metal spraying respectively；
Fig. 2,3,4,5 are that embodiment 1, embodiment 2, embodiment 4 and embodiment 5 obtain product metal spraying and shoot in scanning electron microscopy respectively
The optical photograph of mirror.
Fig. 1 be can be seen that to 6, it can be observed that being different from other two-phase incompatibility polymer and be blended, TPEE with PBT has
Similar molecular structure, two-phase compatibility is preferable, so not presenting typical " sea-island " in the SEM figure of intermingling material
Disperse phase structure, and two-phase interface bonding is stronger.Obviously, when material bears load, such interfacial structure is conducive to stress
Transmission, therefore can predict that being mixed into of certain component PBT can the mechanical property of relatively General Promotion intermingling material.Fig. 1 is pure PBT
Brittle failure figure, be different from elastomer, PBT itself is a kind of hard and crisp material, it appeared that surface is more smooth, is a kind of
Typical brittle fracture.Fig. 6 is the sectional drawing of pure TPEE, it can be observed that have many whitened area, for typical elastic embodiment
As, be the main cause improving toughness of material, when bearing extraneous load, elastomer as stress concentration point, by with matrix
Interfacial detachment and the crazing equal-volume expansion process of matrix, thus absorb and consume substantial amounts of energy.For other not
Crisp cross-section photographs with the intermingling material of component.When TPEE content is less, there is not crazing blushing in intermingling material, and
Matrix TPEE is fuzzy (Fig. 2/3/4/5) with PBT interface, and interfacial adhesion degree is good.Obvious two phase structure does not occur, so
Form be clearly advantageous to the raising of stress transmission efficiency, be also the intermingling material essential characteristic that possesses excellent mechanical performances.
Fig. 7 gives the load-deformation curve of embodiment and comparative example, and its mechanical performance data is then shown in Table 1.Material
Stretch behavior use universal electrical puller system press GB/T1040 standard testing, rate of extension is 50 mm/min, record stress with
The change of strain；Impact strength uses radial-boom impact tester ASTMD256 standard testing, and above test is the most at room temperature entered
OK.
Table 1 embodiment and the mechanical performance data of comparative example
By upper table it is found that along with the increase of PBT content, the hot strength of TPEE/PBT intermingling material presents becoming of rising
Gesture, after adding the PBT of less component, it is not very big that the hot strength of intermingling material improves, and when PBT content is 50%, material is blended
The hot strength relatively TPEE of material improves about 32%, and when the content of PBT is more than TPEE, the now hot strength of intermingling material
Improving more apparent, when PBT content is 60%, the hot strength of intermingling material relatively TPEE improves about 100%.Drawing of intermingling material
Stretching intensity size between the hot strength of TPEE and PBT, crisp and hard mainly due to PBT, hot strength is relatively big, and with
TPEE molecular structure is similar, and intermingling material two-phase compatibility is preferable, and interfacial adhesion is relatively strong, therefore does not occur containing along with a certain component
The increase of amount, the phenomenon that hot strength has declined.
Pure TPEE is difficult to due to good toughness thrust, and pure PBT material is hard and crisp, less only about 5 KJ/ of impact strength
m2.From the graph it can be seen that along with the increase of PBT content, the impact strength of intermingling material tapers into.And for PBT
For, along with the increase of TPEE content, its impact property is the most substantially improved, when component ratio is 50/50, intermingling material
The purer PBT of impact strength improves 200%, illustrates that TPEE is obvious to the toughening effect of PBT.This is mainly due at impact process
In, surface, impact fracture face produces a large amount of crazings, contributes to absorbing more energy in impact process, thus plays raising punching
The effect of hit intensity.Hot strength with test is the same, and the impact strength of co-mixing system does not the most occur along with a certain component
Being increased or decreased, there is unusual phenomenon in blend impact strength, also illustrate that TPEE and PBT two-phase compatibility is preferable, is blended
Thing interfacial adhesion is strong, by choosing different component ratios, it is possible to be met the intermingling material that different serviceability requires.
Claims (2)
1. the method for modifying of an optical cable loose tube thermoplastic polyester elastomer, it is characterised in that by thermoplastic polyester elastomer
After mixing with the polybutylene terephthalate (PBT) ratio that mass ratio is 80: 20～20: 80 to feed intake, it is 240 in temperature conditions
DEG C, rotor speed be banburying in the banbury of 40～60 revs/min, obtain modified thermoplastic polyester elastomer.
Method of modifying the most according to claim 1, it is characterised in that described thermoplastic polyester elastomer is block copolymerization
Thing, density is 1.15g/cm3, fusing point is 240 DEG C, and in described thermoplastic polyester elastomer, polybutylene terephthalate (PBT) section is
Hard section, polyethers is soft section, and soft or hard section mass ratio is 75: 25, and mol ratio is 1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610479290.1A CN105860447A (en) | 2016-06-28 | 2016-06-28 | Method for modifying thermoplastic polyester elastomer for loose tubes of optical fiber cables |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610479290.1A CN105860447A (en) | 2016-06-28 | 2016-06-28 | Method for modifying thermoplastic polyester elastomer for loose tubes of optical fiber cables |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107216620A (en) * | 2017-06-26 | 2017-09-29 | 新疆蓝山屯河聚酯有限公司 | A kind of PBT material and preparation method thereof |
| CN107479156A (en) * | 2017-08-24 | 2017-12-15 | 长飞光纤光缆股份有限公司 | A kind of flexible loose tube cable |
| CN108646368A (en) * | 2018-07-12 | 2018-10-12 | 江苏亨通光电股份有限公司 | All dielectric self-supporting microbeam pipe ADSS optical cables |
| CN109943025A (en) * | 2019-02-04 | 2019-06-28 | 复旦大学 | A kind of thermoplastic polyester elastomer alloy and preparation method thereof |
| CN112662143A (en) * | 2020-12-15 | 2021-04-16 | 江苏金发科技新材料有限公司 | PBT composition with high elongation at break and preparation method thereof |
| CN114106520A (en) * | 2020-08-31 | 2022-03-01 | 南亚塑胶工业股份有限公司 | Modified thermoplastic polyester elastomer and moisture-permeable waterproof film |
| CN115746510A (en) * | 2022-09-27 | 2023-03-07 | 上海金发科技发展有限公司 | PBT composition and preparation method and application thereof |
| CN108646368B (en) * | 2018-07-12 | 2024-05-31 | 江苏亨通光电股份有限公司 | All-dielectric self-supporting type microbeam tube ADSS optical cable |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107216620A (en) * | 2017-06-26 | 2017-09-29 | 新疆蓝山屯河聚酯有限公司 | A kind of PBT material and preparation method thereof |
| CN107479156A (en) * | 2017-08-24 | 2017-12-15 | 长飞光纤光缆股份有限公司 | A kind of flexible loose tube cable |
| CN108646368A (en) * | 2018-07-12 | 2018-10-12 | 江苏亨通光电股份有限公司 | All dielectric self-supporting microbeam pipe ADSS optical cables |
| CN108646368B (en) * | 2018-07-12 | 2024-05-31 | 江苏亨通光电股份有限公司 | All-dielectric self-supporting type microbeam tube ADSS optical cable |
| CN109943025A (en) * | 2019-02-04 | 2019-06-28 | 复旦大学 | A kind of thermoplastic polyester elastomer alloy and preparation method thereof |
| CN114106520A (en) * | 2020-08-31 | 2022-03-01 | 南亚塑胶工业股份有限公司 | Modified thermoplastic polyester elastomer and moisture-permeable waterproof film |
| US11802202B2 (en) | 2020-08-31 | 2023-10-31 | Nan Ya Plastics Corporation | Modified thermoplastic polyester elastomer |
| US11891508B2 (en) | 2020-08-31 | 2024-02-06 | Nan Ya Plastics Corporation | Breathable and waterproof membrane |
| CN112662143A (en) * | 2020-12-15 | 2021-04-16 | 江苏金发科技新材料有限公司 | PBT composition with high elongation at break and preparation method thereof |
| CN115746510A (en) * | 2022-09-27 | 2023-03-07 | 上海金发科技发展有限公司 | PBT composition and preparation method and application thereof |
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Application publication date: 20160817 |