CN109082115A - Thermoplastic polymer or the high-temperature thermal stability method of its compound are improved using inorganic phosphorous acid metal salt - Google Patents
Thermoplastic polymer or the high-temperature thermal stability method of its compound are improved using inorganic phosphorous acid metal salt Download PDFInfo
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- CN109082115A CN109082115A CN201810901818.9A CN201810901818A CN109082115A CN 109082115 A CN109082115 A CN 109082115A CN 201810901818 A CN201810901818 A CN 201810901818A CN 109082115 A CN109082115 A CN 109082115A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
- C08K5/5313—Phosphinic compounds, e.g. R2=P(:O)OR'
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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Abstract
Thermoplastic polymer or the high-temperature thermal stability method of its compound are improved using inorganic phosphorous acid metal salt the invention discloses a kind of, inorganic phosphorous acid metal salt is added in raw material；The inorganic phosphorous acid metal salt is selected from least one of aluminium phosphite, zinc phosphite, Arizona bacilli, phosphorous acid magnesium；With the total weight of thermoplastic polymer or its compound, the additional amount of the inorganic phosphorous acid metal salt is 0.1~2%.The problems such as method disclosed by the invention makes thermoplastic polymer or its compound under experience high temperature and shearing force collective effect, avoids the occurrence of crosslinking, decomposition, degradation, discoloration, maintain the various performances of material.
Description
Technical field
The present invention relates to the technical fields of high molecular material, and in particular to a kind of to improve heat using inorganic phosphorous acid metal salt
The high-temperature thermal stability method of thermoplastic polymer or its compound.
Background technique
The processing and forming of thermoplastic polymer requires experience pyroprocess, is melt state from room temperature Solid State Transformation, melts
The mobility of body makes thermoplastic polymer can random molding.During this undergoes high temperature, polymer molecule may be sent out
The variations such as raw crosslinking, oxidation, degradation (decomposition and hydrolysis including polymer), thus lead to processing performance, mechanical property and material
Material color etc. changes.Therefore, in order to reduce variation of the polymer during high temperature process, made according to the difference of polymer
With different heat stabilizer or antioxidant, the main function of these auxiliary agents is to prevent or at least slow down in high temperature working processes to polymerize
Object changes.
The thermostabilization auxiliary agent of polymer includes heat stabilizer, antioxidant and high temperature anti-hydrolysis agent etc., is primarily referred to as thermostabilization
Agent and antioxidant.Polymer labile for some high temperature, such as PVC polymer are acted in high temperature process and screw rod shearing power
Under, it is easy to happen decomposition dechlorination, it will usually use heat stabilizer, such as lead salt, calcium salt, zinc salt heat stabilizer；For it is some not
Labile polymer, such as polyolefin, nylon, polyester prevent from shearing when polymer high temperature process usually using antioxidant
Power and it is aerobic in the case where oxidative degradation occurs, the antioxidant being often used is organic phenols of small molecule, later development be it is higher
The Hinered phenols of the macromolecular of effect, and the synergistic effect with organophosphorus ester, current most widely used and most efficient antioxidant
It is the 1010 of the collaboration system of Hinered phenols and organophosphorus ester, such as Hinered phenols, 1076,1098 and organophosphorus compounds
168, PEPQ etc..
Although but these organic type thermal stabilizing agents form polymer when high temperature is applied and protect, and the high warm of itself is steady
Qualitative to be challenged, the functional group of small molecule itself is easy to happen decomposition, oxidation stain at high temperature, leads to thermostable effect
It is deteriorated, causes material discoloration, the problems such as such as jaundice, this will limit the application of material significantly.Especially in some fiberglass reinforced works
Engineering plastics it is processing modified in, since the fusion temperature of matrix polymer is very high, as the processing temperature of high-temperature nylon is taken the photograph close to 300
Family name's degree, simultaneously because the effect of glass and screw rod, shearing force is also very strong, and high-temperature nylon is easy for changing colour, and a large amount of antioxygen body
System is not available, therefore high-temperature nylon is difficult to prepare the whiter glass of color from changing colour under this processing conditions yet
Fiber reinforced materials are more the composite materials of black.
In addition, thermoplastic polymer with some function additives are compound prepare functional material when, such as addition fire retardant
Realize the fire-retardant of high molecular material, the introducing of fire retardant can cause the penalty of polymeric matrix, while can also reduce anti-
The efficiency of oxygen agent, so that the performance of some flame-proofed polymer materials declines, discoloration is serious.
Therefore, for have higher processing temperature and more harsh processing conditions, or have functional thermoplastic poly
Object or its composite material are closed, needs to develop novel antioxidant system.
Summary of the invention
The present invention for the organic Hinered phenols of existing business and organophosphorus ester antioxidant system under high temperature high shear with
And the defect that more adjuvant systems are easy to change, it provides and a kind of improves thermoplastic polymer using inorganic phosphorous acid metal salt or it is multiple
The method for closing the high high-temp stability of object, this method make thermoplastic polymer or its compound total in experience high temperature and shearing force
Under same-action, avoid the occurrence of crosslinking, decomposition, degradation, discoloration the problems such as, maintain the various performances of material.
Specific technical solution is as follows:
It is a kind of to improve thermoplastic polymer or the high-temperature thermal stability method of its compound using inorganic phosphorous acid metal salt, it is former
Inorganic phosphorous acid metal salt is added in material；
The inorganic phosphorous acid metal salt in aluminium phosphite, zinc phosphite, Arizona bacilli, phosphorous acid magnesium at least one
Kind；
With the total weight of thermoplastic polymer or its compound, the additional amount of the inorganic phosphorous acid metal salt is 0.1
~2%.
Test discovery, such inorganic phosphorous acid metal salt can be greatly reduced the decomposition or degradation of thermoplastic polymer, avoid
The deterioration of performance and the exception of color, while inorganic phosphorous acid metal salt itself high temperature resistant, high temperature is non-discolouring, will not cause thermoplastic
The variation of property polymer or its compound color.
It will elaborate below to the present invention.
The present invention is to solve existing organic antioxidant itself temperature tolerance for being applied to thermoplastic polymer or its compound
For the purpose of the defect of difference, inventor is had made extensive and intensive studies.For existing organic Hinered phenols and organophosphorus ester
The problem of itself is easy discoloration in high temperature process for antioxidant, thus causes that the decline of plastic material performance, color is bad etc. is
Column problem has investigated the scheme of various antioxidant resistant to high temperature, as a result, it has been found that inorganic phosphorous acid metal salt, not only itself has very high
Thermal stability, and to polymer have apparent high temperature protection effect.Thermoplastic polymer is significantly reduced to add in high temperature
The influence that working hour is heated, the performance for keeping material to have and stable color appearance.
There are carbon-carbon bond, functional group ester group, amide groups in the molecular structure of thermoplastic polymer, these groups are in high temperature
Under be easy to happen oxidation, degradation.The mechanism of its high-temperature oxydation is all to be initially formed living radical, these living radicals can be into one
Step destroys backbone structure, leads to molecular chain rupture, reduces molecular weight, while acting on oxygen, forms the colour developing such as ketone, aldehyde or carboxyl
Group leads to decline and the polymer discoloration of mechanical property.
Now common organic Hinered phenols antioxidant, containing one or more phenolic hydroxyl group molecular structures in molecular structure, and
And the phenolic hydroxyl group in molecular structure is in and is obstructed on position, it is easy to hydrogen atom is provided, by proton donation, to destroy certainly
By base autoxidation chain reaction, and phenol oxygroup free radical is generated, the free radical is more stable, has both the energy of capture living radical
Power, and then radical chain reaction can be terminated, the chain reaction for terminating oxidation reaction is played, the oxidation of polymer is protected.Often
The molecular structure of antioxidant 1010 is shown below:
But although this organic hindered phenol has preferable antioxidant effect, the thermal stability itself having had at a lower temperature,
It can be applicable in the polymer materials system such as polyolefin.But its molecular weight is smaller relative to polymer, the knot on self-molecules present chain
Structure group is easier that oxidation stain occurs at high temperature, therefore in some polymeric systems with higher processing temperature, than
As in use, the discoloration of itself can occur, material caused to turn to be yellow in high-temperature nylon.
In addition, thermoplastic polymer with some function additives are compound prepare functional material when, such as addition fire retardant
Realize the fire-retardant of high molecular material, the introducing of fire retardant can cause the penalty of polymeric matrix, while can also reduce anti-
The efficiency of oxygen agent, so that the performance of some flame-proofed polymer materials declines, discoloration is serious.Therefore, it is also desirable to other function can be reduced
The thermostabilization auxiliary agent that energy auxiliary agent is brought a negative impact.
Inventors discovered through research that the inorganic phosphorous acid metal salt has thermoplastic polymer under high processing temperature
There is good thermostable effect, and can also play good antioxygen in function ingredients such as thermoplastic polymer addition fire retardants
Effect, meanwhile, inorganic phosphorous acid metal itself has good thermal stability, and it is also non-discolouring at 400 degree or more, relative to other
Organic antioxidant has apparent advantage.
The inorganic phosphorous acid metal salt has very high thermal decomposition temperature, and high temperature is non-discolouring, not soluble in water, in polymer
Dispersion is easy in matrix, resistance to migration has long-acting antioxidant effect, while can also have with some phosphorus-nitrogen containing flame retardants and cooperate with resistance
Fuel efficiency fruit improves the anti-flammability of phosphorus-nitrogen containing flame retardant.The inorganic phosphorous acid metal salt is white powder, it is preferable that partial size model
Enclose: average grain diameter 20 < D50 < 50 μm can preferably disperse in a polymer matrix.
After study, to make thermoplastic polymer or its compound have preferable antioxidant effect, the inorganic phosphorous acid of addition
The amount of metal salt are as follows: with the 0.1~2% of thermoplastic polymer or its compound total weight, existing preferable high high-temp stability,
The other performance of material is not influenced again.Preferably, additional amount is thermoplastic polymer or the 0.2~1% of its compound total weight；
Further preferably 1%.
The inorganic phosphorous acid metal salt both can be applied to high temperature system, can also be applied to the system of lower temperature.
In the present invention, the thermoplastic polymer is selected from nylon, polyester, polyolefin, polycarbonate, ABS, polyurethane, gathers
At least one of styrene, polyvinyl chloride.
Its described compound is selected from nylon, polyester, polyolefin, polycarbonate, ABS, polyurethane, polystyrene, polychlorostyrene second
The mixture that at least one of alkene is formed with function additive.
The function additive includes fire retardant and/or reinforcement.
Inorganic phosphorous acid metal salt is evaluated to the high-temperature thermal stability effect of thermoplastic polymer or its compound, by nothing
Machine phosphorous acid metal salt is added in thermoplastic polymer or its compound, undergoes high temperature plasticizing process, passes through contrast test material
The color of material, melting means, impact strength, the high-temperature thermal stability that the even inorganic phosphorous acid metal salt of overall merits such as flame retardant property is precipitated
Effect and persistence etc..
Preferably, the inorganic phosphorous acid metal salt can be used in compounding with other antioxidant systems, such as hindered phenol, organic
The systems such as phosphite ester.That is, in raw material, while inorganic phosphorous acid metal salt and other antioxidant is added；
With the total weight of thermoplastic polymer or its compound, the inorganic phosphorous acid metal salt and other antioxidant
Total additional amount is 0.1~2%；The mass ratio of the inorganic phosphorous acid metal salt and other antioxidant is 1:1~10:1.
Further preferably, other antioxidant are selected from Hinered phenols antioxidant；The inorganic phosphorous acid metal salt and its
The mass ratio of its antioxidant is 1:1~5:1.
Most preferably, the inorganic phosphorous acid metal salt is selected from aluminium phosphite, and other antioxidant are selected from N, and N'- is bis--(3- (3,
5- di-tert-butyl-hydroxy phenyl) propiono) hexamethylene diamine, the mass ratio of the two is 4:1.
The thermostable effect for playing inorganic phosphorous acid metal salt, also needs it to be dispersed in polymer thermoplastic matrix
In.By double screw extruder, melt blending is completed in an extruder and realizes fine dispersion, and extruding pelletization.It can also be
High concentration master batch is made in inorganic phosphorous acid metal salt, then directly uses.
Compared with prior art, the present invention has the advantage that
Thermoplastic polymer or the high temperature of its compound are improved using inorganic phosphorous acid metal salt the invention discloses a kind of
The method of thermal stability overcomes the defect of itself pyrolytic of existing antioxidant discoloration, can be effectively protected thermoplastic poly
Object is closed to be influenced by temperature in high temperature process.
Specific embodiment
Raw material:
(1) aluminium phosphite, Jiangsu Li Side new material Co., Ltd
(2) nylon66 fiber, EPR27, table mountain mind horse
(3) glass, ECS301UW, Chongqing Polycomp International Co., Ltd
(4) antioxidant, 1098, BASF
(5) silicone, middle indigo plant morning twilight
(6) MPP, Melapur 200 is purchased from BASF
(7) diethyl hypo-aluminum orthophosphate, 8003, Jiangsu Li Side new material Co., Ltd
Embodiment 1
Inorganic phosphorous acid metal salt is applied in thermoplastic polymer or its compound, follows these steps and test method is examined
Examine thermostable effect.
1, the mixture of inorganic phosphorous acid metal salt and thermoplastic polymer or its compound
It is stirred in height and the inorganic phosphorous acid metal salt weighed up in advance according to the ratio, thermoplastic polymer, other components is added in machine,
Start high-speed stirred, stir 10min, complete the mixture of each component, discharges.
2, the extruding pelletization of material
Each area's temperature setting of double screw extruder in predetermined temperature, after temperature stablizes 20min, start host and feeding
Machine completes the extruding pelletization of material.The material for having made grain is sent into feed bin by blast system, and dries.
3, the application and test of material
The material dried is molded by the standard sample of various testing standard defineds in injection molding machine, and carries out correlation
The test of material property.It is primarily upon following performance indicator:
A, fire-retardant
It is tested according to UL94V0 testing standard.
B, resistance to migration experiment
The plastic sample that will be prepared, is put into climatic chamber, is arranged 85 DEG C of temperature, relative humidity 85%, range estimation is seen
Examine the state of the specimen surface after 168 hours.
C, Mechanics Performance Testing
Impact strength is tested by ASTM D256, impact property is lower, and polymeric matrix degradation is more obvious.
D, melt index is tested
Test condition: 280 DEG C/2.16Kg, by melting means size come the palliating degradation degree of comparative polymers.
Each material and proportion are shown in Table 1 in embodiment 1, and obtained testing of materials the results are shown in Table 1.
Embodiment 2
Implementation process is same as Example 1, and in addition to the amount of adjustment aluminium phosphite, other materials and proportion are shown in Table 1, acquired
Material the results are shown in Table 1.
Embodiment 3
Implementation process is same as Example 1, and in addition to the amount of adjustment aluminium phosphite, other materials and proportion are shown in Table 1, acquired
Material the results are shown in Table 1.
Embodiment 4
Implementation process is same as Example 1, and in addition to using aluminium phosphite and 1098 compound systems, other materials and proportion are shown in
Table 1, obtained material the results are shown in Table 1.
Embodiment 5
Implementation process is same as Example 1, and addition diethyl hypo-aluminum orthophosphate and melamine polyphosphate (MPP) Halogen hinder
Combustion system is applied in glass fiber enhanced nylon, and obtained material the results are shown in Table 1.
Comparative example 1
Implementation process is same as Example 1, other than without using aluminium phosphite.Other materials and proportion are shown in Table 1, acquired
Material the results are shown in Table 1.
Comparative example 2
Implementation process is same as Example 1, other than without using aluminium phosphite and antioxidant 1098.Other materials and proportion
It is shown in Table 1, obtained material the results are shown in Table 1.
Comparative example 3
Implementation process is same as Example 4, other than without using aluminium phosphite and antioxidant 1098.Other materials and proportion
It is shown in Table 1, obtained material the results are shown in Table 1.
Comparative example 4
Implementation process is same as Example 4, other than without using aluminium phosphite.Other materials and proportion are shown in Table 1, acquired
Material the results are shown in Table 1.
Table 1
Claims (8)
1. a kind of improve thermoplastic polymer or the high-temperature thermal stability method of its compound using inorganic phosphorous acid metal salt, special
Sign is, inorganic phosphorous acid metal salt is added in raw material；
The inorganic phosphorous acid metal salt is selected from least one of aluminium phosphite, zinc phosphite, Arizona bacilli, phosphorous acid magnesium；
With the total weight of thermoplastic polymer or its compound, the additional amount of the inorganic phosphorous acid metal salt is 0.1~
2%.
2. according to claim 1 improve thermoplastic polymer or the high temperature of its compound using inorganic phosphorous acid metal salt
Method for thermal stabilization, which is characterized in that the average grain diameter D50 of the inorganic phosphorous acid metal salt is 20~50 μm.
3. according to claim 1 improve thermoplastic polymer or the high temperature of its compound using inorganic phosphorous acid metal salt
Method for thermal stabilization, which is characterized in that the thermoplastic polymer is selected from nylon, polyester, polyolefin, polycarbonate, ABS, poly- ammonia
At least one of ester, polystyrene, polyvinyl chloride.
4. according to claim 1 improve thermoplastic polymer or the high temperature of its compound using inorganic phosphorous acid metal salt
Method for thermal stabilization, which is characterized in that its described compound is selected from nylon, polyester, polyolefin, polycarbonate, ABS, polyurethane, gathers
The mixture that at least one of styrene, polyvinyl chloride are formed with function additive.
5. according to claim 4 improve thermoplastic polymer or the high temperature of its compound using inorganic phosphorous acid metal salt
Method for thermal stabilization, which is characterized in that the function additive includes fire retardant and/or reinforcement.
6. improving thermoplastic polymer using inorganic phosphorous acid metal salt described in any claim according to claim 1~5
Or the high-temperature thermal stability method of its compound, which is characterized in that in raw material, while inorganic phosphorous acid metal salt is added and resists with other
Oxygen agent；
With the total weight of thermoplastic polymer or its compound, the inorganic phosphorous acid metal salt and the total of other antioxidant add
Entering amount is 0.1~2%；
Other antioxidant include hindered phenol and/or organic phosphite.
7. according to claim 6 improve thermoplastic polymer or the high temperature of its compound using inorganic phosphorous acid metal salt
Method for thermal stabilization, which is characterized in that the mass ratio of the inorganic phosphorous acid metal salt and other antioxidant is 1:1~10:1.
8. according to claim 6 improve thermoplastic polymer or the high temperature of its compound using inorganic phosphorous acid metal salt
Method for thermal stabilization, which is characterized in that other antioxidant are selected from Hinered phenols antioxidant；
The mass ratio of the inorganic phosphorous acid metal salt and other antioxidant is 1:1~5:1.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111171556A (en) * | 2019-12-25 | 2020-05-19 | 金发科技股份有限公司 | Polyamide composition and preparation method thereof |
| CN112341816A (en) * | 2020-09-30 | 2021-02-09 | 金发科技股份有限公司 | PPS composite material, preparation method and application thereof |
| US20220185986A1 (en) * | 2019-05-30 | 2022-06-16 | SI Group Switzerland (Chaa) Gmbh | Antidegradant blend |
| DE102021202508A1 (en) | 2021-03-15 | 2022-09-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Use of a stabilizer composition for stabilizing polyolefin recyclates, stabilizer composition, masterbatch concentrate, plastic composition, molding material or molding, method for stabilizing a polyolefin recyclate and use of a plastic composition |
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| CN103154110A (en) * | 2010-10-09 | 2013-06-12 | 科莱恩金融(Bvi)有限公司 | Flame retardant-stabilizer combination for thermoplastic polymers |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20220185986A1 (en) * | 2019-05-30 | 2022-06-16 | SI Group Switzerland (Chaa) Gmbh | Antidegradant blend |
| CN111171556A (en) * | 2019-12-25 | 2020-05-19 | 金发科技股份有限公司 | Polyamide composition and preparation method thereof |
| CN112341816A (en) * | 2020-09-30 | 2021-02-09 | 金发科技股份有限公司 | PPS composite material, preparation method and application thereof |
| DE102021202508A1 (en) | 2021-03-15 | 2022-09-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Use of a stabilizer composition for stabilizing polyolefin recyclates, stabilizer composition, masterbatch concentrate, plastic composition, molding material or molding, method for stabilizing a polyolefin recyclate and use of a plastic composition |
| WO2022194672A1 (en) | 2021-03-15 | 2022-09-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Use of a stabilizer composition for stabilizing polyolefin recyclates, stabilizer composition, master batch concentrate, plastic composition, molding compound or molding, method for stabilizing a polyolefin recyclate and use of a plastic composition |
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Application publication date: 20181225 |