CN108727761A - A method of improving high impact polystyrene dimensional stability - Google Patents
A method of improving high impact polystyrene dimensional stability Download PDFInfo
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- CN108727761A CN108727761A CN201810573193.8A CN201810573193A CN108727761A CN 108727761 A CN108727761 A CN 108727761A CN 201810573193 A CN201810573193 A CN 201810573193A CN 108727761 A CN108727761 A CN 108727761A
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- high impact
- impact polystyrene
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- dimensional stability
- conditioning agent
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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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2244—Oxides; Hydroxides of metals of zirconium
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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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
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Abstract
The invention belongs to high impact polystyrene processing technique fields, more particularly to a kind of method improving high impact polystyrene dimensional stability, addition is equivalent to the conditioning agent of its weight 8-12% in the high impact polystyrene that solution flow rate is 4.5g/10min, it is granulated in double screw extruder, gained plastic pellet is molded in injection molding machine and obtains product：The conditioning agent includes the raw material of following parts by weight：16-20 parts of talcum powder, 6-10 parts of nano zircite, 4-6 parts of aluminium isopropoxide, 1-3 parts of polybenzimidazoles.The present invention has the following advantages compared with prior art：Conditioning agent used is can be uniformly dispersed in plastics in the present invention, increase the frictional force of polymer molecule interchain, while the reduction of impact strength is reduced by certain humidification to polymer, it is effectively improved the contractive effect of high impact polystyrene, and then enhances the dimensional stability of high impact polystyrene.
Description
Technical field
The invention belongs to high impact polystyrene processing technique fields, and in particular to a kind of raising high impact polystyrene ruler
The method of very little stability.
Background technology
Polystyrene is one of five big general-purpose plastics, is difficult to obtain wider array of purposes since its toughness is poor, industrially adopt
Synthetic rubber is added in the polymerization process of styrene, carries out free radical polymerization, is formed by continuous phase polystyrene and dispersion
The two-phase system of phase rubber composition, i.e. high impact polystyrene, due to containing rubber components in matrix, the toughness of material increases
Add, with the continuous expansion of high impact polystyrene application field, the requirement to its comprehensive performance is continuously improved, steady to its size
Qualitatively requirement is also higher and higher, due to high impact polystyrene since physically aged will produce after-contraction phenomenon, therefore, it is necessary to
Further how research improves its dimensional stability.
Invention content
The purpose of the present invention is for existing problem, provide a kind of high impact polystyrene dimensional stability that improves
Method.
The present invention is achieved by the following technical solutions：A kind of side for improving high impact polystyrene dimensional stability
Method adds the conditioning agent for being equivalent to its weight 8-12% in the high impact polystyrene that solution flow rate is 4.5g/10min,
In double screw extruder, temperature be 225-235 DEG C, 300 revs/min of screw speed under conditions of melting, be blended, squeeze out and make
Grain, gained plastic pellet is molded in injection molding machine and obtains product：
The conditioning agent includes the raw material of following parts by weight：16-20 parts of talcum powder, 6-10 parts of nano zircite, three isopropoxies
4-6 parts of aluminium, 1-3 parts of polybenzimidazoles；
The preparation method of the conditioning agent includes the following steps：
（1）By the talcum powder mass concentration be 6-8% hydrochloric acid solution in be ultrasonically treated 10-20 minutes, spend after the completion from
Sub- water is rinsed to neutrality, and then calcining is taken out after 40-60 minutes under conditions of temperature is 420-480 DEG C, and drying crushed
200 mesh sieve, and it is spare to obtain powder A；
（2）Above-mentioned gained powder is impregnated 3-4 hours in the hydroxyacetic acid solution that mass concentration is 12-14%, hydroxyacetic acid is molten
Liquid temperature is 65-70 DEG C, dries again after the completion, crushed 300 mesh sieve, it is spare to obtain powder material B；
（3）By talcum powder, nano zircite, aluminium isopropoxide, polybenzimidazoles mix after under argon atmosphere ball milling, ball material
Than for 10-14:1, rotational speed of ball-mill be 600-800 revs/min, ball milling after 2-3 hours to get.
As further improvement of these options, the nano zircite is using bis- methylene of lauryl amine-N, N- using preceding
Base phosphonic acids is modified it by complexing, and the grain size of the nano zircite is 2-80nm.
As further improvement of these options, the six rings stone is using preceding use60It is irradiated in Co- gamma-ray irradiation instrument
6-10min is handled, the accumulated dose of irradiation is 12-18kGy.
As further improvement of these options, the high impact polystyrene is HIPS-622.
As further improvement of these options, the step（1）Ultrasonic frequency is 80- when middle supersound process
90kHz。
As further improvement of these options, the content of aluminium element is 13.5% in the aluminium isopropoxide.
The present invention has the following advantages compared with prior art：Conditioning agent used is can be uniformly dispersed in plastics in the present invention,
Increase the frictional force of polymer molecule interchain, while is reduced by the reduction of impact strength, is had by certain humidification for polymer
Effect improves the contractive effect of high impact polystyrene, and then enhances the dimensional stability of high impact polystyrene.
Specific implementation mode
Embodiment 1
A method of high impact polystyrene dimensional stability being improved, in the high-impact that solution flow rate is 4.5g/10min
Addition is equivalent to the conditioning agent of its weight 10% in polystyrene, is 230 DEG C, screw speed in temperature in double screw extruder
It melts, be blended, extruding pelletization under conditions of 300 revs/min, gained plastic pellet is molded in injection molding machine and obtains product：
The conditioning agent includes the raw material of following parts by weight：18 parts of talcum powder, 8 parts of nano zircite, 5 parts of aluminium isopropoxide,
2 parts of polybenzimidazoles；
The preparation method of the conditioning agent includes the following steps：
（1）The talcum powder is ultrasonically treated 15 minutes in the hydrochloric acid solution that mass concentration is 7%, uses deionized water after the completion
It rinses to neutrality, then calcining is taken out after 50 minutes under conditions of temperature is 450 DEG C, and drying crushed 200 mesh sieve, obtain
Powder A is spare；
（2）Above-mentioned gained powder is impregnated 3.5 hours in the hydroxyacetic acid solution that mass concentration is 13%, hydroxyacetic acid solution
Temperature is 68 DEG C, dries again after the completion, crushed 300 mesh sieve, it is spare to obtain powder material B；
（3）By talcum powder, nano zircite, aluminium isopropoxide, polybenzimidazoles mix after under argon atmosphere ball milling, ball material
Than being 12:1, rotational speed of ball-mill be 700 revs/min, ball milling after 2.5 hours to get.
Wherein, the nano zircite is using lauryl amine-N, N- dimethylene-phosphonic acid by complexing to it using preceding
Modified, the grain size of the nano zircite is 2-80nm；The six rings stone is using preceding use60It is irradiated in Co- gamma-ray irradiation instrument
8min is handled, the accumulated dose of irradiation is 15kGy；The high impact polystyrene is HIPS-622；The step（1）At middle ultrasound
Ultrasonic frequency is 85kHz when reason；The content of aluminium element is 13.5% in the aluminium isopropoxide.
Embodiment 2
A method of high impact polystyrene dimensional stability being improved, in the high-impact that solution flow rate is 4.5g/10min
Addition is equivalent to the conditioning agent of its weight 8% in polystyrene, is 235 DEG C, screw speed in temperature in double screw extruder
It melts, be blended, extruding pelletization under conditions of 300 revs/min, gained plastic pellet is molded in injection molding machine and obtains product：
The conditioning agent includes the raw material of following parts by weight：16 parts of talcum powder, 6 parts of nano zircite, 4 parts of aluminium isopropoxide,
3 parts of polybenzimidazoles；
The preparation method of the conditioning agent includes the following steps：
（1）The talcum powder is ultrasonically treated 20 minutes in the hydrochloric acid solution that mass concentration is 6%, uses deionized water after the completion
It rinses to neutrality, then calcines under conditions of temperature is 420 DEG C and take out after sixty minutes, drying crushed 200 mesh sieve, obtain
Powder A is spare；
（2）Above-mentioned gained powder is impregnated 3 hours in the hydroxyacetic acid solution that mass concentration is 14%, hydroxyacetic acid solution temperature
Degree is 65 DEG C, dries again after the completion, crushed 300 mesh sieve, it is spare to obtain powder material B；
（3）By talcum powder, nano zircite, aluminium isopropoxide, polybenzimidazoles mix after under argon atmosphere ball milling, ball material
Than being 10:1, rotational speed of ball-mill be 800 revs/min, ball milling after 2 hours to get.
Wherein, the nano zircite is using lauryl amine-N, N- dimethylene-phosphonic acid by complexing to it using preceding
Modified, the grain size of the nano zircite is 2-80nm；The six rings stone is using preceding use60It is irradiated in Co- gamma-ray irradiation instrument
10min is handled, the accumulated dose of irradiation is 18kGy；The high impact polystyrene is HIPS-622；The step（1）Middle ultrasound
Ultrasonic frequency is 90kHz when processing；The content of aluminium element is 13.5% in the aluminium isopropoxide.
Embodiment 3
A method of high impact polystyrene dimensional stability being improved, in the high-impact that solution flow rate is 4.5g/10min
Addition is equivalent to the conditioning agent of its weight 12% in polystyrene, is 225 DEG C, screw speed in temperature in double screw extruder
It melts, be blended, extruding pelletization under conditions of 300 revs/min, gained plastic pellet is molded in injection molding machine and obtains product：
The conditioning agent includes the raw material of following parts by weight：20 parts of talcum powder, 10 parts of nano zircite, 6 parts of aluminium isopropoxide,
1 part of polybenzimidazoles；
The preparation method of the conditioning agent includes the following steps：
（1）The talcum powder is ultrasonically treated 10 minutes in the hydrochloric acid solution that mass concentration is 8%, uses deionized water after the completion
It rinses to neutrality, then calcines under conditions of temperature is 480 DEG C and take out after forty minutes, drying crushed 200 mesh sieve, obtain
Powder A is spare；
（2）Above-mentioned gained powder is impregnated 4 hours in the hydroxyacetic acid solution that mass concentration is 12%, hydroxyacetic acid solution temperature
Degree is 70 DEG C, dries again after the completion, crushed 300 mesh sieve, it is spare to obtain powder material B；
（3）By talcum powder, nano zircite, aluminium isopropoxide, polybenzimidazoles mix after under argon atmosphere ball milling, ball material
Than being 14:1, rotational speed of ball-mill be 300 revs/min, ball milling after 3 hours to get.
Wherein, the nano zircite is using lauryl amine-N, N- dimethylene-phosphonic acid by complexing to it using preceding
Modified, the grain size of the nano zircite is 2-80nm；The six rings stone is using preceding use60It is irradiated in Co- gamma-ray irradiation instrument
6min is handled, the accumulated dose of irradiation is 12kGy；The high impact polystyrene is HIPS-622；The step（1）At middle ultrasound
Ultrasonic frequency is 80kHz when reason；The content of aluminium element is 13.5% in the aluminium isopropoxide.
Control group 1 is set, nano zircite in embodiment 1 is removed, remaining content is constant；Control group 2 is set, will be implemented
Aluminium isopropoxide removes in example 1, remaining content is constant；Control group 3 is set, by the preparation method of conditioning agent in embodiment 1
Step（1）,（2）Remove, remaining content is constant；Blank group is set, conditioning agent is not added；
The size for testing model is 355 × 100mm × 3mm, has been molded and has been placed 168 hours in the environment of temperature is 40 DEG C, into
Row post-shrinkage ratio is tested, and tensile strength is tested by GB/T1040-2006, and bending property is tested by GB/T9341-2000, cantilever beam
Impact strength is tested by GB/T1843-2008, and 5 repeating groups of every group of setting obtain following result：
Table 1
Tensile strength and bending strength in the present invention are can be seen that by data in table 1 with blank group to be not much different, and are had certain
The raising of degree, notch impact strength reduction amount are less than 0.5 kJ/m2, and shrinking percentage is obviously improved.
Claims (6)
1. it is a kind of improve high impact polystyrene dimensional stability method, which is characterized in that solution flow rate be 4.5g/
Addition is equivalent to the conditioning agent of its weight 8-12% in the high impact polystyrene of 10min, in double screw extruder, in temperature
To melt, being blended, extruding pelletization under conditions of 225-235 DEG C, 300 revs/min of screw speed, gained plastic pellet is being molded
Injection molding obtains product in machine：
The conditioning agent includes the raw material of following parts by weight：16-20 parts of talcum powder, 6-10 parts of nano zircite, three isopropoxies
4-6 parts of aluminium, 1-3 parts of polybenzimidazoles；
The preparation method of the conditioning agent includes the following steps：
（1）By the talcum powder mass concentration be 6-8% hydrochloric acid solution in be ultrasonically treated 10-20 minutes, spend after the completion from
Sub- water is rinsed to neutrality, and then calcining is taken out after 40-60 minutes under conditions of temperature is 420-480 DEG C, and drying crushed
200 mesh sieve, and it is spare to obtain powder A；
（2）Above-mentioned gained powder is impregnated 3-4 hours in the hydroxyacetic acid solution that mass concentration is 12-14%, hydroxyacetic acid is molten
Liquid temperature is 65-70 DEG C, dries again after the completion, crushed 300 mesh sieve, it is spare to obtain powder material B；
（3）By talcum powder, nano zircite, aluminium isopropoxide, polybenzimidazoles mix after under argon atmosphere ball milling, ball material
Than for 10-14:1, rotational speed of ball-mill be 600-800 revs/min, ball milling after 2-3 hours to get.
2. a kind of method improving high impact polystyrene dimensional stability as described in claim 1, which is characterized in that described to receive
Rice zirconium oxide is modified it by complexing with lauryl amine-N, N- dimethylene-phosphonic acid using preceding, the nano zircite
Grain size be 2-80nm.
3. a kind of method improving high impact polystyrene dimensional stability as described in claim 1, which is characterized in that described six
Ring stone is using preceding use60The accumulated dose of radiation treatment 6-10min in Co- gamma-ray irradiation instrument, irradiation are 12-18kGy.
4. a kind of method improving high impact polystyrene dimensional stability as described in claim 1, which is characterized in that the height
Impact-resistant polystyrene is HIPS-622.
5. a kind of method improving high impact polystyrene dimensional stability as described in claim 1, which is characterized in that the step
Suddenly（1）Ultrasonic frequency is 80-90kHz when middle supersound process.
6. a kind of method improving high impact polystyrene dimensional stability as described in claim 1, which is characterized in that described three
The content of aluminium element is 13.5% in aluminum isopropoxide.
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| CN201810573193.8A CN108727761A (en) | 2018-06-06 | 2018-06-06 | A method of improving high impact polystyrene dimensional stability |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10120863A (en) * | 1996-10-16 | 1998-05-12 | Daiso Co Ltd | Flame-retardant resin composition |
| CN102219975A (en) * | 2011-06-14 | 2011-10-19 | 刘立文 | Modified high impact polystyrene composite material and preparation process thereof |
-
2018
- 2018-06-06 CN CN201810573193.8A patent/CN108727761A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10120863A (en) * | 1996-10-16 | 1998-05-12 | Daiso Co Ltd | Flame-retardant resin composition |
| CN102219975A (en) * | 2011-06-14 | 2011-10-19 | 刘立文 | Modified high impact polystyrene composite material and preparation process thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘西文: "《塑料配混工[中、高级]培训教程》", 31 January 2017 * |
| 机械工业部桂林电器科学研究: "《低温电工绝缘》", 31 July 1983 * |
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