CN105330844B - Transparent nylon and its synthetic method - Google Patents
Transparent nylon and its synthetic method Download PDFInfo
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- CN105330844B CN105330844B CN201510888246.1A CN201510888246A CN105330844B CN 105330844 B CN105330844 B CN 105330844B CN 201510888246 A CN201510888246 A CN 201510888246A CN 105330844 B CN105330844 B CN 105330844B
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Abstract
The invention discloses a kind of transparent nylon and its synthetic method, the transparent nylon has such as following formula I structure：In formula I, a=10~100, b=10~200, c=10~100, d=10~100, R is polyesteramide.Transparent nylon of the present invention has higher mechanical property and light transmittance, low water absorption and processing characteristics are excellent, can be applied to the field such as fuel and oily surrounding mechanical part and electro mechanical component, precision optical instrument, pressure-resistant form, peephole, extraordinary light fixture outer cover, food product packing film, high-grade sports equipment.
Description
Technical field
The present invention relates to Material Field, more particularly to a step melt polymerization transparent nylon and its synthetic method.
Background technology
Transparent polyamide is a kind of high polymer material of excellent combination property.It not only has high mechanical strength, thermally-stabilised
The advantages of property good, excellent corrosion resistance, also with easy processing and forming, dimensional stability, linear expansion coefficient be small, cost performance
High, electrical insulating property and resistance to ag(e)ing is excellent, nontoxic, odorless, easily with other amorphous or hemihedral crystal polyamide formation alloy the advantages of；No
But the transparency is excellent (transparency be even more than PC, close to PMMA), and in resisting environmental stress and cracking, oil resistivity solvent, resistance to grab
Wound, it is wear-resistant in terms of it is more more superior than general transparent polymer material (such as PS, PC, PMMA).Transparent polyamide is present
Have been widely used for (such as lighter oil groove, flowmeter set, the mistakes such as the surrounding mechanical part and electro mechanical component of fuel and oil
Filter cover, filter bowl, breaker and Shells of High Voltage Switches etc.), especially in precision optical instrument, pressure-resistant form, peephole, special type
The application in the fields such as light fixture outer cover, food product packing film, high-grade sports equipment is that other materials institute is irreplaceable.
Because polyamide belongs to crystalline polymer, the polyamide for wanting to produce possesses very high light transmittance, can be with
From the aspect of three below：(1) crystallizing power of polyamide is reduced, so as to obtain amorphous product；(2) crystalline region crystal is reduced
Size, makes the diameter of crystal be less than visible light wave wavelength, this method is otherwise known as controlled micro crystallization method；(3) blending, copolymerization etc. are passed through
Method is modified to polyamide, to adjust the refractive index of amorphous area and crystalline region, them is had identical refraction index.
Solid phase (Solid state Polymerization) refers to solid (or crystalline phase) monomer below its fusing point
The polymerisation of generation, or the polymerization carried out more than monomer fusing point but below the melting temperature of the polymer of formation are anti-
Should.Due to general 15~30 DEG C of progress below the fusing point of prepolymer of solid phase, its reaction rate relatively slow, reaction time compared with
It is long, and the production process of solid phase is more, flow complicated, requires higher to device parameter, and reaction also needs to ensure functional group
Proportioning close to 1:1, the thickening stage needs vacuum or air-flow to accelerate the discharge of small molecular by product, so as to improve polycondensation production
The molecular weight of thing, therefore, conditions above limit the large-scale promotion of solid phase.Melt polymerization (Melt
Polymerization the polymerization process that monomer and polymer are under molten condition) is referred to, this method process route is simple,
Can continuously it produce, can also Batch Process.Reaction needs to carry out at high temperature, and the reaction time is shorter, and the pair such as hydrone
Product discharge is easy.At present, some researchs, such as Chinese patent have been done in the synthesis in the prior art to transparent polyamide
CN1041957A discloses a kind of transparent thermoplastic polyamide, and its structure is by cycloaliphatic diamine, the interior acyl of at least 7 carbon atoms
Amine or corresponding amino acid and terephthalic acid (TPA) or terephthalic acid (TPA) and isophthalic diformazan containing more than 50% terephthalic acid (TPA)
The group composition of the mixture of acid.This kind of polyamide is by lactams or amino-acid compound and terephthalic acid (TPA) by the first step
Or the mixture reaction of terephthalic acid (TPA) and M-phthalic acid and second step are by resulting diacid oligomer and cycloaliphatic two
Amine reaction is made, and the patent is two step method；Chinese patent CN101372531A discloses a kind of transparent co-polyamide and its system
Preparation Method, using domestic cheap dimeric dibasic acid, aromatic acid and acyclic straight diamine as raw material, melt polycondensation obtains one
Copolyamide is planted, the light transmittance of this copolymer is up to more than 90%, while having higher heat resistance not only but also with preferable
Moulding processability；Chinese patent CN103073717A discloses a kind of preparation method of Semi-aromatic transparent polyamide, including
The following steps：By terephthalic acid (TPA) and 2,2,4- trimethylhexane diamines (TMD) are added in organic solvent, it is fully reacted obtained
Paraphenylene terephthalamide's trimethylhexane diamine salt (TMDT salt)；Paraphenylene terephthalamide's trimethylhexane diamine salt (TMDT is added in a kettle.
Salt), 11- aminoundecanoic acids, nucleator and deionized water, use nitrogen purging cleaning；Chinese patent CN103435796A is disclosed
A kind of Semi-aromatic transparent polyamide material and preparation method thereof, the material is by semi-aromatic amidic-salt and aliphatic amide salt
Random copolymer and necessary auxiliary agent composition；Chinese patent CN103483581A discloses a kind of transparent polyamide and its synthesis
Method, first prepares amorphous polyamide salt and fatty polyamide salt, then by the amorphous polyamide salt and aliphatic poly
Amidic-salt reacts under conditions of catalyst and antioxidant are present, and transparent polyamide is made.
The content of the invention
There is higher mechanical property and light transmittance, low water absorption and processability it is an object of the invention to provide a kind of
Can excellent transparent nylon, can be applied to the surrounding mechanical part and electro mechanical component of fuel and oil, precision optical instrument, resistance to
Press the fields such as form, peephole, extraordinary light fixture outer cover, food product packing film, high-grade sports equipment.
To reach above-mentioned purpose, the present invention uses following scheme：
A kind of transparent nylon, with such as following formula I structure：
In formula I, a=10~100, b=10~200, c=10~100, d=10~100, R is polyesteramide, and it has
Such as Formula Il structure：
In Formula II, x=10~200, y=10~200, z=10~100；
The transparent nylon is formed by monomer 1 and polyesteramide copolymerization, and the monomer 1 is that mol ratio is 1:0.65~
0.99:0.01~0.35 hexamethylene diamine, M-phthalic acid and adipic acid, and the hexamethylene diamine and M-phthalic acid and adipic acid two
The mol ratio of person's consumption sum is 1, and the polyesteramide addition is the 1~8% of the gross weight of monomer 1.
In wherein some embodiments, the addition of the polyesteramide is the 2~6% of the gross weight of monomer 1.
In wherein some embodiments, the inherent viscosity of the transparent nylon is 0.7~1.0dL/g, flow temperature TfFor
Between 227~242 DEG C.
In wherein some embodiments, the polyesteramide is formed by the copolymerization of monomer 2, and the monomer 2 is that mol ratio is 1:
0.5~1:0.1~0.4 11- aminoundecanoic acids, 6- caprolactones and 2,2'- (1,3- phenylene)-bisoxazoline.
In wherein some embodiments, the polyesteramide is made by following synthetic method：
(1) monomer 2 after vacuum drying is added in stirring-type polymer reactor, while adding the monomer 2
0.1~2% titanium compound of gross weight is used as catalyst, addition suitable quantity of water；Then 3~10min is vacuumized, leads to inert gas
3~10min, so circulates 5~10 times, makes in the environment that reactant is present under inert gas shielding, controls the stirring-type
System pressure is 0.1~0.5MPa in polymer reactor；
(2) by the stirring-type polymer reactor airtight heating to 240~260 DEG C, the stirring-type polymerisation is adjusted
The mixing speed of device is 0~100r/min, wherein, when the stirring-type polymer reactor temperature reaches 210 DEG C, it is deflated to
1.6MPa, and maintain pressure in 1.6MPa, after reacting 0.5~4 hour, normal pressure is deflated to, continues to react at 240~260 DEG C
After 0.5~4 hour, constant temperature is persistently vacuumized 0.1~2 hour, and reaction terminates, the topping up in discharging；
In above-mentioned steps, the inert gas is nitrogen or argon gas；The titanium compound is butyl titanate, isopropyl titanium
One or more kinds of mixtures in acid esters, propyl titanate, acrylic titanate esters.
It is a further object of the present invention to provide the synthetic method of above-mentioned transparent nylon.
Specific technical scheme is as follows：
The synthetic method of above-mentioned transparent nylon, comprises the following steps：
(1) monomer 1 after vacuum drying is added in stirring-type polymer reactor, at the same add the polyesteramide,
Crystallization promoter, molecular weight regulator, antioxidant and appropriate water；Then 3~10min is vacuumized, logical inert gas 3~
10min, so circulates 5~10 times, makes in the environment that reactant is present under inert gas shielding, controls the stirring-type polymerization
System pressure is 0.1~0.5MPa in reactor；The addition of the polyesteramide is the 1~8% of the gross weight of monomer 1；
The polyesteramide is formed by the copolymerization of monomer 2, and the monomer 2 is that mol ratio is 1:0.5~1:0.1~0.4 11- amino 11
Acid, 6- caprolactones and 2,2'- (1,3- phenylenes)-bisoxazoline；
(2) by the stirring-type polymer reactor airtight heating to 227~237 DEG C, the stirring-type polymerisation is adjusted
The mixing speed of device is 0~100r/min, wherein, when the stirring-type polymer reactor temperature reaches 210 DEG C, it is deflated to
1.6MPa, and maintain pressure in 1.6MPa, after reacting 0.5~4 hour, normal pressure is deflated to, while being warming up at 243~257 DEG C
Continue after reacting 0.5~4 hour, constant temperature is persistently vacuumized 0.1~2 hour, and reaction terminates, the topping up in discharging；
In above-mentioned steps, the inert gas is nitrogen or argon gas.
Logical inert gas purpose is to reduce the probability that side reaction occurs before reaction；The purpose vacuumized in course of reaction is handle
The water produced in polymerisation is removed, and is conducive to polymerisation forward direction progress.
In wherein some embodiments, the synthetic method of the transparent nylon comprises the following steps：
(1) monomer 1 after vacuum drying is added in stirring-type polymer reactor, at the same add the polyesteramide,
Crystallization promoter, molecular weight regulator, antioxidant and appropriate water；Then 4~6min is vacuumized, leads to 4~6min of nitrogen,
So circulation 5~7 times, makes in the environment that reactant is present under nitrogen protection, is in the control stirring-type polymer reactor
System pressure is 0.2~0.3MPa；The addition of the polyesteramide is the 2~6% of the gross weight of monomer 1；
(2) in 2~4 hours by the closed constant-speed heating of stirring-type polymer reactor to 229~235 DEG C, adjust institute
The mixing speed for stating stirring-type polymer reactor is 30~50r/min, wherein, when the stirring-type polymer reactor temperature reaches
At 210 DEG C, 1.6MPa is deflated to, and maintains pressure in 1.6MPa, after reacting 1~2 hour, normal pressure is deflated to, is warming up to simultaneously
Continue at 245~255 DEG C after reacting 1~2 hour, constant temperature is persistently vacuumized 0.3~1 hour, and reaction terminates, supplemented in discharging
Nitrogen.
In wherein some embodiments, the polyesteramide is made by following synthetic method：
(1) monomer 2 after vacuum drying is added in stirring-type polymer reactor, while adding the monomer 2
0.1~2% titanium compound of gross weight is used as catalyst, addition suitable quantity of water；Then 3~10min is vacuumized, leads to inert gas
3~10min, so circulates 5~10 times, makes in the environment that reactant is present under inert gas shielding, controls the stirring-type
System pressure is 0.1~0.5MPa in polymer reactor；
(2) by the stirring-type polymer reactor airtight heating to 240~260 DEG C, the stirring-type polymerisation is adjusted
The mixing speed of device is 0~100r/min, wherein, when the stirring-type polymer reactor temperature reaches 210 DEG C, it is deflated to
1.6MPa, and maintain pressure in 1.6MPa, after reacting 0.5~4 hour, normal pressure is deflated to, continues to react at 240~260 DEG C
After 0.5~4 hour, constant temperature is persistently vacuumized 0.1~2 hour, and reaction terminates, the topping up in discharging；
In above-mentioned steps, the inert gas is nitrogen or argon gas；The titanium compound is butyl titanate, isopropyl titanium
One or more kinds of mixtures in acid esters, propyl titanate, acrylic titanate esters.
In wherein some embodiments, the crystallization promoter be addition be the gross weight of monomer 1 0.1~
0.3% Long carbon chain carboxylic acid calcium salt, the carbon number of the Long carbon chain carboxylic acid calcium salt is 10~40；The molecular weight regulator is to add
Measure as 0.1~2% benzoic acid of the gross weight of monomer 1；The antioxidant is that addition is the gross weight of monomer 1
0.1~0.3% N, N`- bis- (2,2,6,6- tetramethyl -4- piperidyls) -1,3- benzene diamides.
In wherein some embodiments, the carbon number of the Long carbon chain carboxylic acid calcium salt is 15~35；The molecular weight regulator
It is 0.5~1.5% benzoic acid that addition is the gross weight of monomer 1.
The principle of the present invention is as follows：
The present invention prepares transparent nylon using cheap M-phthalic acid, hexamethylene diamine, adipic acid, polyesteramide as raw material.This
Invention destroys the symmetry and regularity of polyamide molecule chain using the dissymmetrical structure and adipic acid of M-phthalic acid, leads to
The rigid benzene ring structure crossed in M-phthalic acid reduces the locomitivity of polyamide molecule chain, so as to reach reduction polyamide knot
The purpose of brilliant ability.Also, reduce the size of polyamide crystalline region crystal by adding crystallization promoter, make polyamide
Crystal region Crystallization microstructure, and the presence of microstructure makes material have more preferable mechanical strength, chemically-resistant medicine
Product and anti-stress cracking, while assigning material low water absorbable and pliability.Meanwhile, polyesteramide is added to improve copolymer
Notch impact strength and antistatic effect, add N, and N`- bis- (2,2,6,6- tetramethyl -4- piperidyls) -1,3- benzene diamides comes
Handle the xanthochromia problem in polymerization process.
Polyesteramide has ether epoxide, and it can be combined with free electric charge, and electric charge can be in the way of combination
It is mobile, ionic conduction release electrostatic lotus is carried out along polyesteramide backbone, so as to reach anlistatig effect.Further, since ether oxygen
The bond angle of key is larger, and segment compliance preferably, therefore can improve the notch impact strength of copolymer.
The fusing point of N, N`- bis- (2,2,6,6- tetramethyl -4- piperidyls) -1,3- benzene diamides is 272 DEG C, boiling point>360
DEG C, the better heat stability in transparent nylon building-up process, its amide group can react to carry with the end group of transparent nylon
High-compatibility, hindered piperidine base can provide antioxidation and improve the dyeability of copolymer.
Benzoic acid belongs to the organic matter of simple function group, the end carboxyl of benzoic acid and transparent nylon in melt polymerization process
After Amino End Group reaction, it no longer carries out the reaction of chain growth, so as to play a part of adjusting molecular weight.
Transparent nylon provided by the present invention and its synthetic method have advantages below：
(1) present invention prepares transparent nylon using cheap M-phthalic acid, hexamethylene diamine, adipic acid, polyesteramide as raw material.
The present invention destroys the symmetry and regularity of polyamide molecule chain using the dissymmetrical structure and adipic acid of M-phthalic acid,
The locomitivity of polyamide molecule chain is reduced by the rigid benzene ring structure in M-phthalic acid, so as to reach reduction polyamide
The purpose of crystallizing power.Meanwhile, add polyesteramide to improve the notch impact strength and antistatic effect of copolymer, add N,
N`- bis- (2,2,6,6- tetramethyl -4- piperidyls) -1,3- benzene diamides handles the xanthochromia problem in polymerization process.
The transparent nylon has higher mechanical property and light transmittance, and low water absorption and processing characteristics are excellent, can apply
In the surrounding mechanical part and electro mechanical component of fuel and oil, precision optical instrument, pressure-resistant form, peephole, extraordinary light fixture
The fields such as outer cover, food product packing film, high-grade sports equipment.
(2) method that synthetic method of the invention uses one-step polymerization, it, which has, reduces process, shortens flow, drops
Low cost, improves the advantage of productivity ratio；Preparation technology is easy, and polymerization process is easy to operate, is easy to management and control, can fully reach
To required polymerizing condition, facilitate its industrialized realization；And in the course of the polymerization process without using any organic solvent, to people
Body and environment are not dangerous, and security is good.
Brief description of the drawings
Fig. 1 show the synthesis process flow diagram of transparent nylon of the present invention.
Embodiment
For the feature, technological means and the specific purposes reached, function of the present invention can be further appreciated that, this hair is parsed
Bright advantage and spirit, by following examples, the present invention is further elaborated.
A kind of transparent nylon, with such as following formula I structure：
In formula I, a=10~100, b=10~200, c=10~100, d=10~100, R is polyesteramide, and it has
Such as Formula Il structure：
In Formula II, x=10~200, y=10~200, z=10~100
The reaction mechanism of transparent nylon of the present invention is following (synthesis process flow diagram is see Fig. 1)：
Reaction mechanism
It is the Amino End Group of hexamethylene diamine, the end carboxyl of M-phthalic acid, the end carboxyl of adipic acid, poly- from above-mentioned reaction equation
The Amino End Group and end carboxyl of esteramides, these groups, which can react to each other, obtains transparent nylon of the present invention.
The synthetic reaction mechanism of the polyesteramide added in above-mentioned transparent nylon course of reaction is as follows：
Reaction mechanism
After above-mentioned reaction equation, 6- caprolactone open loops its ester group, the Amino End Group of 11- aminoundecanoic acids, 2,2'- (1,
3- phenylenes)-bisoxazoline oxazoline group, these three groups, which can react to each other, obtains the polyester acyl that is added of the present invention
Amine, the inherent viscosity for the polyesteramide that the present invention is added is 0.7~1.0dL/g, glass transition temperature Tg>=80 DEG C, melting temperature
TmFor 215~225 DEG C.
Raw material is as follows used in the embodiment of the present invention：
Hexamethylene diamine, selected from Wuxi Yinda Nylon Co., Ltd.；
M-phthalic acid, selected from Beijing Yanshan Petrochemical Co.；
Adipic acid, selected from Shandong Guang Yin new materials Co., Ltd；
Polyesteramide, self-control；6- caprolactones in raw material, selected from the chemical Science and Technology Ltd. of the rich bamboo grove in Wuhan；
11- aminoundecanoic acids, selected from Taiyuan Zhong Lianze agrochemicals Co., Ltd；
2,2'- (1,3- phenylene)-bisoxazolines, selected from Nanjing colon medication chemistry Co., Ltd；
Butyl titanate, selected from Chemical Reagent Co., Ltd., Sinopharm Group；
Long carbon chain carboxylic acid calcium salt, selected from Chemical Reagent Co., Ltd., Sinopharm Group；
Benzoic acid, selected from Chemical Reagent Co., Ltd., Sinopharm Group；
N, N`- bis- (2,2,6,6- tetramethyl -4- piperidyls) -1,3- benzene diamides, has selected from Chinese medicines group chemical reagent
Limit company.
The present invention is described in detail below in conjunction with specific embodiment.
Polyesteramide in following examples is disliked by 11- aminoundecanoic acids, 6- caprolactones, 2,2'- (1,3- phenylenes)-two
Oxazoline copolymerization is formed, and 11- aminoundecanoic acids, 6- caprolactones, the mol ratio of 2,2'- (1,3- phenylene)-bisoxazoline are 1:0.5
~1:0.1~0.4.
Synthetic method is as follows：
(1) by the monomer 2 after vacuum drying：11- aminoundecanoic acids, 6- caprolactones, 2,2'- (1,3- phenylenes)-two are disliked
Oxazoline is added in stirring-type polymer reactor by above-mentioned mol ratio, while adding 0.1~2% titanizing of the gross weight of monomer 2
Compound is used as medium of the appropriate water of catalyst, addition as mass-and heat-transfer；Then 3~10min is vacuumized, leads to inert gas 3
~10min, so circulates 5~10 times, makes in the environment that reactant is present under inert gas shielding, and control stirring-type polymerization is anti-
It is 0.1~0.5MPa to answer system pressure in device；
(2) by stirring-type polymer reactor airtight heating to 240~260 DEG C, the stirring of stirring-type polymer reactor is adjusted
Speed is 0~100r/min, wherein, when stirring-type polymer reactor temperature reaches 210 DEG C, 1.6MPa is deflated to, and maintain
Pressure after reacting 0.5~4 hour, is deflated to normal pressure in 1.6MPa, continues at 240~260 DEG C after reacting 0.5~4 hour,
Constant temperature is persistently vacuumized 0.1~2 hour, and reaction terminates, the topping up in discharging；
In above-mentioned steps, the inert gas is nitrogen or argon gas；The titanium compound is butyl titanate, isopropyl titanium
One or more kinds of mixtures in acid esters, propyl titanate, acrylic titanate esters.
Embodiment 1：
The raw material of polyesteramide used in the present embodiment is constituted and synthesis step is as follows：
(1) by the monomer 2 after vacuum drying：1006.6g (5mol) 11- aminoundecanoic acids, 456.6g (4mol) 6- are in oneself
Ester, 270.3g (1.25mol) 2,2'- (1,3- phenylene)-bisoxazoline are added in stirring-type polymer reactor, are added simultaneously
1% butyl titanate (17.3g) of the gross weight of monomer 2 as catalyst, add 500mL water as mass-and heat-transfer medium；
Then 5min is vacuumized, leads to nitrogen 5min, so circulation 6 times makes in the environment that reactant is present under nitrogen protection, control is stirred
It is 0.2MPa to mix system pressure in formula polymer reactor；
(2) in 2.5 hours by the closed constant-speed heating of stirring-type polymer reactor to 250 DEG C, regulation stirring-type polymerization is anti-
The mixing speed for answering device is 40r/min, wherein, when stirring-type polymer reactor temperature reaches 210 DEG C, 1.6MPa is deflated to,
And maintain pressure in 1.6MPa, after reacting 1.5 hours, normal pressure is deflated to, is continued at 250 DEG C after reacting 1.5 hours, constant temperature is held
Continuous to vacuumize 0.5 hour, reaction terminates, and nitrogen is supplemented in discharging.
A kind of synthetic method of transparent nylon of the present embodiment, comprises the following steps：
(1) by the monomer 1 after vacuum drying：116.2g (1mol) hexamethylene diamine, 164.5g (0.99mol) M-phthalic acid,
1.5g (0.01mol) adipic acid is added in stirring-type polymer reactor, while add 1% (2.8g) of the gross weight of monomer 1
Polyesteramide, 0.1% (0.3g) Long carbon chain carboxylic acid calcium salt, 0.1% (0.3g) benzoic acid, 0.1% (0.3g) N, N`- bis-
(2,2,6,6- tetramethyl -4- piperidyls) -1,3- benzene diamides, add 100mL water as mass-and heat-transfer medium；Then take out true
Empty 5min, leads to nitrogen 5min, and so circulation 6 times makes in the environment that reactant is present under nitrogen protection, control stirring-type polymerization
System pressure is 0.3MPa in reactor；
(2) in 4 hours by the closed constant-speed heating of stirring-type polymer reactor to 237 DEG C, adjust stirring-type polymerisation
The mixing speed of device is 40r/min, wherein, when stirring-type polymer reactor temperature reaches 210 DEG C, 1.6MPa is deflated to, and
Pressure is maintained in 1.6MPa, after reaction 0.5 hour, normal pressure is deflated to, while after being warming up at 257 DEG C and continuing to react 0.5 hour,
Constant temperature is persistently vacuumized 2 hours, and reaction terminates, and nitrogen is supplemented in discharging.
Embodiment 2：
The raw material of polyesteramide used is constituted and synthesis step be the same as Example 1 in the present embodiment.
A kind of synthetic method of transparent nylon of the present embodiment, comprises the following steps：
(1) by the monomer 1 after vacuum drying：116.2g (1mol) hexamethylene diamine, 108.0g (0.65mol) M-phthalic acid,
51.1g (0.35mol) adipic acid is added in stirring-type polymer reactor, while adding 8% (22.0g) of the gross weight of monomer 1
Polyesteramide, 0.3% (0.8g) Long carbon chain carboxylic acid calcium salt, 2% (5.5g) benzoic acid, 0.3% (0.8g) N, N`- bis-
(2,2,6,6- tetramethyl -4- piperidyls) -1,3- benzene diamides, add 100mL water as mass-and heat-transfer medium；Then take out true
Empty 5min, leads to nitrogen 5min, and so circulation 6 times makes in the environment that reactant is present under nitrogen protection, control stirring-type polymerization
System pressure is 0.2MPa in reactor；
(2) in 2 hours by the closed constant-speed heating of stirring-type polymer reactor to 227 DEG C, adjust stirring-type polymerisation
The mixing speed of device is 40r/min, wherein, when stirring-type polymer reactor temperature reaches 210 DEG C, 1.6MPa is deflated to, and
Pressure is maintained in 1.6MPa, after reaction 4 hours, normal pressure is deflated to, while after being warming up at 243 DEG C and continuing to react 4 hours, constant temperature
Persistently vacuumize 0.1 hour, reaction terminates, nitrogen is supplemented in discharging.
Embodiment 3：
The raw material of polyesteramide used is constituted and synthesis step be the same as Example 1 in the present embodiment.
A kind of synthetic method of transparent nylon of the present embodiment, comprises the following steps：
(1) by the monomer 1 after vacuum drying：116.2g (1mol) hexamethylene diamine, 149.5g (0.9mol) M-phthalic acid,
14.6g (0.1mol) adipic acid is added in stirring-type polymer reactor, while add 2% (5.6g) of the gross weight of monomer 1
Polyesteramide, 0.2% (0.6g) Long carbon chain carboxylic acid calcium salt, 0.5% (1.4g) benzoic acid, 0.2% (0.6g) N, N`- bis-
(2,2,6,6- tetramethyl -4- piperidyls) -1,3- benzene diamides, add 100mL water as mass-and heat-transfer medium；Then take out true
Empty 5min, leads to nitrogen 5min, and so circulation 6 times makes in the environment that reactant is present under nitrogen protection, control stirring-type polymerization
System pressure is 0.3MPa in reactor；
(2) in 3.5 hours by the closed constant-speed heating of stirring-type polymer reactor to 235 DEG C, regulation stirring-type polymerization is anti-
The mixing speed for answering device is 40r/min, wherein, when stirring-type polymer reactor temperature reaches 210 DEG C, 1.6MPa is deflated to,
And pressure is maintained in 1.6MPa, after reaction 1 hour, normal pressure is deflated to, while after being warming up at 255 DEG C and continuing to react 1 hour, it is permanent
Temperature is persistently vacuumized 1 hour, and reaction terminates, and nitrogen is supplemented in discharging.
Embodiment 4：
The raw material of polyesteramide used is constituted and synthesis step be the same as Example 1 in the present embodiment.
A kind of synthetic method of transparent nylon of the present embodiment, comprises the following steps：
(1) by the monomer 1 after vacuum drying：116.2g (1mol) hexamethylene diamine, 116.3g (0.7mol) M-phthalic acid,
43.8g (0.3mol) adipic acid is added in stirring-type polymer reactor, while add 6% (16.6g) of the gross weight of monomer 1
Polyesteramide, 0.2% (0.6g) Long carbon chain carboxylic acid calcium salt, 1.5% (4.1g) benzoic acid, 0.2% (0.6g) N, N`- bis-
(2,2,6,6- tetramethyl -4- piperidyls) -1,3- benzene diamides, add 100mL water as mass-and heat-transfer medium；Then take out true
Empty 5min, leads to nitrogen 5min, and so circulation 6 times makes in the environment that reactant is present under nitrogen protection, control stirring-type polymerization
System pressure is 0.3MPa in reactor；
(2) in 2.5 hours by the closed constant-speed heating of stirring-type polymer reactor to 229 DEG C, regulation stirring-type polymerization is anti-
The mixing speed for answering device is 40r/min, wherein, when stirring-type polymer reactor temperature reaches 210 DEG C, 1.6MPa is deflated to,
And pressure is maintained in 1.6MPa, after reaction 2 hours, normal pressure is deflated to, while after being warming up at 245 DEG C and continuing to react 2 hours, it is permanent
Temperature is persistently vacuumized 0.3 hour, and reaction terminates, and nitrogen is supplemented in discharging.
Embodiment 5：
The raw material of polyesteramide used is constituted and synthesis step be the same as Example 1 in the present embodiment.
A kind of synthetic method of transparent nylon of the present embodiment, comprises the following steps：
(1) by the monomer 1 after vacuum drying：116.2g (1mol) hexamethylene diamine, 132.9g (0.8mol) M-phthalic acid,
29.2g (0.2mol) adipic acid is added in stirring-type polymer reactor, while add 4% (11.1g) of the gross weight of monomer 1
Polyesteramide, 0.2% (0.6g) Long carbon chain carboxylic acid calcium salt, 1.0% (2.8g) benzoic acid, 0.2% (0.6g) N, N`- bis-
(2,2,6,6- tetramethyl -4- piperidyls) -1,3- benzene diamides, add 100mL water as mass-and heat-transfer medium；Then take out true
Empty 5min, leads to nitrogen 5min, and so circulation 6 times makes in the environment that reactant is present under nitrogen protection, control stirring-type polymerization
System pressure is 0.3MPa in reactor；
(2) in 3 hours by the closed constant-speed heating of stirring-type polymer reactor to 232 DEG C, adjust stirring-type polymerisation
The mixing speed of device is 40r/min, wherein, when stirring-type polymer reactor temperature reaches 210 DEG C, 1.6MPa is deflated to, and
Pressure is maintained in 1.6MPa, after reaction 1.5 hours, normal pressure is deflated to, while after being warming up at 250 DEG C and continuing to react 1.5 hours,
Constant temperature is persistently vacuumized 0.5 hour, and reaction terminates, and nitrogen is supplemented in discharging.
It is embodiment list below：
The embodiment raw material of table 1 constitutes list
The made sample of above-described embodiment is subjected to following performance test：
Tensile property：By GB/T1040-2006 standard testings, rate of extension 50mm/min；
Impact property：By GB/T1843-2008 standard testings, batten thickness is 3.2mm；
Water absorption rate：By GB/T1034-2008 standard testings, thickness of test piece 2mm；
Inherent viscosity：By GB/T1632-2008 standard testings, the solvent concentrated sulfuric acid；
Light transmittance：By GB/T2410-2008 standard testings；
Flow temperature：Tested using digital micro-analysis melting point apparatus.
The embodiment performance list of table 2
As can be seen from the above embodiments, the addition of adipic acid is more, the tensile strength of transparent nylon, light transmittance and viscous
Stream temperature is lower, and impact strength is higher；The water absorption rate change of each embodiment is little；With the addition of molecular weight regulator benzoic acid
Amount increases, and its inherent viscosity diminishes.Wherein, the combination property of embodiment 5 is optimal.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of transparent nylon, it is characterised in that with such as following formula I structure：
In formula I, a=10~100, b=10~200, c=10~100, d=10~100, R is polyesteramide, and it has as follows
Formula II structure：
In Formula II, x=10~200, y=10~200, z=10~100；
The transparent nylon is formed by monomer 1 and polyesteramide copolymerization, and the monomer 1 is that mol ratio is 1:0.65~0.99:
0.01~0.35 hexamethylene diamine, M-phthalic acid and adipic acid, and the hexamethylene diamine and both M-phthalic acid and adipic acid use
The mol ratio for measuring sum is 1, and the polyesteramide addition is the 1~8% of the gross weight of monomer 1.
2. transparent nylon according to claim 1, it is characterised in that the addition of the polyesteramide is the monomer 1
The 2~6% of gross weight.
3. transparent nylon according to claim 1, it is characterised in that the inherent viscosity of the transparent nylon is 0.7~
1.0dL/g, flow temperature TfBetween 227~242 DEG C.
4. the transparent nylon according to claim any one of 1-3, it is characterised in that the polyesteramide is by the copolymerization of monomer 2
Form, the monomer 2 is that mol ratio is 1:0.5~1:0.1~0.4 11- aminoundecanoic acids, 6- caprolactones and 2,2'- (1,3-
Phenylene)-bisoxazoline.
5. transparent nylon according to claim 4, it is characterised in that the polyesteramide is made by following synthetic method：
(1) monomer 2 after vacuum drying is added in stirring-type polymer reactor, while adding the gross weight of monomer 2
0.1~2% titanium compound of amount is used as catalyst, addition suitable quantity of water；Then 3~10min is vacuumized, logical inert gas 3~
10min, so circulates 5~10 times, makes in the environment that reactant is present under inert gas shielding, controls the stirring-type polymerization
System pressure is 0.1~0.5MPa in reactor；
(2) by the stirring-type polymer reactor airtight heating to 240~260 DEG C, the stirring-type polymer reactor is adjusted
Mixing speed is 0~100r/min, wherein, when the stirring-type polymer reactor temperature reaches 210 DEG C, it is deflated to
1.6MPa, and maintain pressure in 1.6MPa, after reacting 0.5~4 hour, normal pressure is deflated to, continues to react at 240~260 DEG C
After 0.5~4 hour, constant temperature is persistently vacuumized 0.1~2 hour, and reaction terminates, the topping up in discharging；
In above-mentioned steps, the inert gas is nitrogen or argon gas；The titanium compound is butyl titanate, isopropyl metatitanic acid
One or more kinds of mixtures in ester, propyl titanate, acrylic titanate esters.
6. the synthetic method of the transparent nylon described in a kind of claim 1, it is characterised in that comprise the following steps：
(1) monomer 1 after vacuum drying is added in stirring-type polymer reactor, while adding the polyesteramide, crystallization
Accelerator, molecular weight regulator, antioxidant and appropriate water；Then 3~10min is vacuumized, logical inert gas 3~
10min, so circulates 5~10 times, makes in the environment that reactant is present under inert gas shielding, controls the stirring-type polymerization
System pressure is 0.1~0.5MPa in reactor；The addition of the polyesteramide is the 1~8% of the gross weight of monomer 1；
The polyesteramide is formed by the copolymerization of monomer 2, and the monomer 2 is that mol ratio is 1:0.5~1:0.1~0.4 11- amino 11
Acid, 6- caprolactones and 2,2'- (1,3- phenylenes)-bisoxazoline；
(2) by the stirring-type polymer reactor airtight heating to 227~237 DEG C, the stirring-type polymer reactor is adjusted
Mixing speed is 0~100r/min, wherein, when the stirring-type polymer reactor temperature reaches 210 DEG C, it is deflated to
1.6MPa, and maintain pressure in 1.6MPa, after reacting 0.5~4 hour, normal pressure is deflated to, while being warming up at 243~257 DEG C
Continue after reacting 0.5~4 hour, constant temperature is persistently vacuumized 0.1~2 hour, and reaction terminates, the topping up in discharging；
In above-mentioned steps, the inert gas is nitrogen or argon gas.
7. synthetic method according to claim 6, it is characterised in that comprise the following steps：
(1) monomer 1 after vacuum drying is added in stirring-type polymer reactor, while adding the polyesteramide, crystallization
Accelerator, molecular weight regulator, antioxidant and appropriate water；Then 4~6min is vacuumized, leads to 4~6min of nitrogen, so
Circulation 5~7 times, makes in the environment that reactant is present under nitrogen protection, controls system pressure in the stirring-type polymer reactor
Power is 0.2~0.3MPa；The addition of the polyesteramide is the 2~6% of the gross weight of monomer 1；
(2) in 2~4 hours by the closed constant-speed heating of stirring-type polymer reactor to 229~235 DEG C, regulation described in stir
The mixing speed for mixing formula polymer reactor is 30~50r/min, wherein, when the stirring-type polymer reactor temperature reaches 210
DEG C when, be deflated to 1.6MPa, and maintain pressure in 1.6MPa, after reaction 1~2 hour, normal pressure be deflated to, while being warming up to 245
Continue at~255 DEG C after reacting 1~2 hour, constant temperature is persistently vacuumized 0.3~1 hour, and reaction terminates, nitrogen is supplemented in discharging
Gas.
8. the synthetic method according to claim 6 or 7, it is characterised in that the polyesteramide is by following synthetic method system
：
(1) monomer 2 after vacuum drying is added in stirring-type polymer reactor, while adding the gross weight of monomer 2
0.1~2% titanium compound of amount is used as catalyst, addition suitable quantity of water；Then 3~10min is vacuumized, logical inert gas 3~
10min, so circulates 5~10 times, makes in the environment that reactant is present under inert gas shielding, controls the stirring-type polymerization
System pressure is 0.1~0.5MPa in reactor；
(2) by the stirring-type polymer reactor airtight heating to 240~260 DEG C, the stirring-type polymer reactor is adjusted
Mixing speed is 0~100r/min, wherein, when the stirring-type polymer reactor temperature reaches 210 DEG C, it is deflated to
1.6MPa, and maintain pressure in 1.6MPa, after reacting 0.5~4 hour, normal pressure is deflated to, continues to react at 240~260 DEG C
After 0.5~4 hour, constant temperature is persistently vacuumized 0.1~2 hour, and reaction terminates, the topping up in discharging；
In above-mentioned steps, the inert gas is nitrogen or argon gas；The titanium compound is butyl titanate, isopropyl metatitanic acid
One or more kinds of mixtures in ester, propyl titanate, acrylic titanate esters.
9. the synthetic method according to claim 6 or 7, it is characterised in that the crystallization promoter is that addition is described
The Long carbon chain carboxylic acid calcium salt of the 0.1~0.3% of the gross weight of monomer 1, the carbon number of the Long carbon chain carboxylic acid calcium salt is 10~40；It is described
Molecular weight regulator is 0.1~2% benzoic acid that addition is the gross weight of monomer 1；The antioxidant is that addition is
0.1~0.3% N of the gross weight of monomer 1, N`- bis- (2,2,6,6- tetramethyl -4- piperidyls) -1,3- benzenedicarboxamides.
10. synthetic method according to claim 9, it is characterised in that the carbon number of the Long carbon chain carboxylic acid calcium salt is 15~
35；The molecular weight regulator is 0.5~1.5% benzoic acid that addition is the gross weight of monomer 1.
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