CN107266802A - A kind of preparation method of high heat-resisting polystyrene foam plastics packaging material - Google Patents
A kind of preparation method of high heat-resisting polystyrene foam plastics packaging material Download PDFInfo
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- CN107266802A CN107266802A CN201710513903.3A CN201710513903A CN107266802A CN 107266802 A CN107266802 A CN 107266802A CN 201710513903 A CN201710513903 A CN 201710513903A CN 107266802 A CN107266802 A CN 107266802A
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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
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/02—Wrappers or flexible covers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
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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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- 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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- 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
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of preparation method of high heat-resisting polystyrene foam plastics packaging material, comprise the following steps：Nano sepiolite powder is handled using the ethanol solution of pyridine under certain condition first；Then the Nano sepiolite powder after processing is mixed with premise solution prepared by polyacrylamide, the Nano sepiolite powder coated using polyacrylamide made from the method for two-stage polymerization；Finally polystyrene, polyvinyl alcohol, polyvinylpyrrolidone and deionized water are mixed, dissolved by heating, mixed liquor A is made；Dispersant, foaming agent, antioxidant, heat stabilizer and deionized water are mixed, modified meerschaum powder obtained above is added, dispersed with stirring is uniform, obtains mixed liquid B；It is placed in mould and foams after mixed liquor A and mixed liquid B are well mixed, obtains high heat-resisting polystyrene foam plastics packaging material.The packaging material excellent in mechanical performance, it is heat-resist, prepare cost low.
Description
Technical field：
The present invention relates to plastic package material field, a kind of high heat-resisting polystyrene foam plastics packaging is specifically related to
The preparation method of material.
Background technology：
Polystyrene material is to be synthesized by ESimon inventions for 1839.Start batch production after U.S.'s nineteen twenty-five.This
The advantage of kind of material is cheap, surface smoothness is good, with carton it is supporting do inner packing shock resistance preferably, be easy to injection
Shaping, proportion are small, lightweight..The yield of the polystyrene produced at present by raw material of styrene has leapt to world's foamed plastics
Second, but with the development of packing scale material, polystyrene material is crisp, poor heat resistance, there is electrostatic, not degradable, power
Learn the not good application for limiting it in packaging material field of performance.
Sepiolite is a kind of rich fibrous magnesium silicate clay mineral, is under the jurisdiction of palygorskite-sepiolite as inorganic material
Race, with 2:The transiens structure of 1 type stratiform and chain.Its big specific surface area, therefore with extremely strong absorption property, at it
Substantial amounts of water or polar substances, including low polar substances can be adsorbed in passage and hole.And because sepiolite has well
Machinery and heat endurance, porous, it is applied to that the mechanics of material can be effectively improved and resistance in the modification of high polymer material
Hot property, the key of the technology is the compatibility for solving sepiolite powder and matrix material.
The content of the invention：
The technical problem to be solved in the present invention is：Polystyrene foam plastics packaging material poor heat resistance in the prior art,
Low intensity, it is not ageing-resistant.
In order to solve the above technical problems, the invention provides a kind of high heat-resisting polystyrene foam plastics packaging material
Preparation method, the material thermal resistance can be good, and soft tough and tensile, ageing-resistant performance is excellent, and it is low to prepare cost.
Preferably to solve above-mentioned technical problem, the present invention uses following technical scheme：
A kind of preparation method of high heat-resisting polystyrene foam plastics packaging material, comprises the following steps：
(1) pyridine is dissolved in absolute ethyl alcohol, then adds Nano sepiolite powder, be transferred to and carry after being uniformly mixed
In the round-bottomed flask of condenser pipe, 60-80 DEG C is warming up to, reflow treatment 30-50min is cooled to 40 DEG C, filtering, solid after terminating
Washed with absolute ethyl alcohol repeatedly, be dried in vacuo, obtain white solid；
(2) sodium hydrate aqueous solution and acrylic acid are mixed to prepare the aqueous sodium acrylate solution that mass concentration is 15%, will
Acrylamide is dissolved in water and the acrylamide aqueous solution that mass concentration is 20% is made；By aqueous sodium acrylate solution and acryloyl aqueous amine
Solution is mixed, and then adds white solid obtained above, is stirred 30min, is then added 1/2 emulsifying agent and 1/2 initiator, is risen
Then temperature adds remaining initiator and emulsifying agent to 70-80 DEG C of reaction 2h, continues to react 3h, reaction is cooled to room after terminating
Temperature, dries obtained modified Nano sepiolite powder；
(3) polystyrene, polyvinyl alcohol, polyvinylpyrrolidone and deionized water are mixed, dissolved by heating, mixing is made
Liquid A；Dispersant, foaming agent, antioxidant, heat stabilizer and deionized water are mixed, modified meerschaum obtained above is added
Powder, dispersed with stirring is uniform, obtains mixed liquid B；
(4) it is placed in mould and foams after being well mixed mixed liquor A and mixed liquid B, obtains high heat-resisting polystyrene bubble
Foam plastic package material.
As the preferred of above-mentioned technical proposal, in step (1), the particle size of the Nano sepiolite powder is 20-50nm.
As the preferred of above-mentioned technical proposal, in step (1), the mass ratio of the pyridine and Nano sepiolite powder is 3：
(0.7-1.5)。
As the preferred of above-mentioned technical proposal, in step (2), the mass concentration of the sodium hydrate aqueous solution is 50-
85%.
As the preferred of above-mentioned technical proposal, in step (2), the aqueous sodium acrylate solution, acrylamide aqueous solution
Mass ratio is 2:1.5.
As the preferred of above-mentioned technical proposal, in step (2), the quality of the white solid is sodium acrylate solution quality
22%.
As the preferred of above-mentioned technical proposal, in step (2), the emulsifying agent is OPEO, benzylphenol
One kind in APEO, double phenethyl phenol polyethenoxy ethers, its consumption is the 13% of aqueous sodium acrylate solution quality.
As the preferred of above-mentioned technical proposal, in step (2), the initiator is di-isopropyl peroxydicarbonate, its
Consumption is the 15% of aqueous sodium acrylate solution quality.
As the preferred of above-mentioned technical proposal, in step (3), each component consumption is respectively in parts by weight：Polystyrene
75-95 parts, 20-30 parts of polyvinyl alcohol, 5-15 parts of polyvinylpyrrolidone, 15-35 parts of deionized water, 5-8 parts of dispersant, foaming
5-10 parts of agent, 4-8 parts of antioxidant, 5-10 parts of heat stabilizer, 10-17 parts of modified meerschaum powder.
As the preferred of above-mentioned technical proposal, in step (3), the dispersant is fatty acid polyethylene glycol ester.
The invention has the advantages that：
The present invention is modified to polystyrene using sepiolite powder, in order to improve Nano sepiolite powder and polystyrene
Compatibility, the present invention using the ethanol solution processing Nano sepiolite powder of pyridine, activates its surface, then polyacrylamide again first
The Nano sepiolite powder added in premise solution prepared by amine after activation, polyacrylamide is realized uniform on nanometer sepiolite surface
Cladding, effectively improve the interface performance of Nano sepiolite powder and polystyrene；
The modified polystyrene material stability of Nano sepiolite powder is good, and uniform foam cell, heat endurance is good, mechanical property
It is excellent, and preparation method is simple, asepsis environment-protecting.
Embodiment：
In order to be better understood from the present invention, below by embodiment, the present invention is further described, and embodiment is served only for solution
The present invention is released, any restriction will not be constituted to the present invention.
Embodiment 1
A kind of preparation method of high heat-resisting polystyrene foam plastics packaging material, comprises the following steps：
(1) pyridine is dissolved in absolute ethyl alcohol, then adds Nano sepiolite powder, be transferred to and carry after being uniformly mixed
In the round-bottomed flask of condenser pipe, 60 DEG C are warming up to, reflow treatment 30min is cooled to 40 DEG C after terminating, filtering, solid is with anhydrous
Ethanol washing is multiple, and vacuum drying obtains white solid；Wherein, pyridine and the mass ratio of Nano sepiolite powder are 3：0.7；
(2) sodium hydrate aqueous solution and acrylic acid are mixed to prepare the aqueous sodium acrylate solution that mass concentration is 15%, will
Acrylamide is dissolved in water and the acrylamide aqueous solution that mass concentration is 20% is made；By aqueous sodium acrylate solution and acryloyl aqueous amine
Solution is mixed, and then adds white solid obtained above, is stirred 30min, is then added 1/2 emulsifying agent and 1/2 initiator, is risen
Then temperature adds remaining initiator and emulsifying agent to 70-80 DEG C of reaction 2h, continues to react 3h, reaction is cooled to room after terminating
Temperature, dries obtained modified Nano sepiolite powder；Wherein, aqueous sodium acrylate solution, the mass ratio of acrylamide aqueous solution are 2:
1.5；The quality of white solid is the 22% of sodium acrylate solution quality；The consumption of emulsifying agent is aqueous sodium acrylate solution quality
13%；The consumption of initiator is the 15% of aqueous sodium acrylate solution quality；
(3) polystyrene, polyvinyl alcohol, polyvinylpyrrolidone and deionized water are mixed, dissolved by heating, mixing is made
Liquid A；Dispersant, foaming agent, antioxidant, heat stabilizer and deionized water are mixed, modified meerschaum obtained above is added
Powder, dispersed with stirring is uniform, obtains mixed liquid B；Wherein, the consumption of each component, be respectively in parts by weight：75 parts of polystyrene,
20 parts of polyvinyl alcohol, 5 parts of polyvinylpyrrolidone, 15 parts of deionized water, 5 parts of dispersant, 5 parts of foaming agent, 4 parts of antioxidant,
5 parts of heat stabilizer, 10 parts of modified meerschaum powder；
(4) it is placed in mould and foams after being well mixed mixed liquor A and mixed liquid B, obtains high heat-resisting polystyrene bubble
Foam plastic package material.
Embodiment 2
A kind of preparation method of high heat-resisting polystyrene foam plastics packaging material, comprises the following steps：
(1) pyridine is dissolved in absolute ethyl alcohol, then adds Nano sepiolite powder, be transferred to and carry after being uniformly mixed
In the round-bottomed flask of condenser pipe, 80 DEG C are warming up to, reflow treatment 50min is cooled to 40 DEG C after terminating, filtering, solid is with anhydrous
Ethanol washing is multiple, and vacuum drying obtains white solid；Wherein, pyridine and the mass ratio of Nano sepiolite powder are 3：1.5；
(2) sodium hydrate aqueous solution and acrylic acid are mixed to prepare the aqueous sodium acrylate solution that mass concentration is 15%, will
Acrylamide is dissolved in water and the acrylamide aqueous solution that mass concentration is 20% is made；By aqueous sodium acrylate solution and acryloyl aqueous amine
Solution is mixed, and then adds white solid obtained above, is stirred 30min, is then added 1/2 emulsifying agent and 1/2 initiator, is risen
Then temperature adds remaining initiator and emulsifying agent to 70-80 DEG C of reaction 2h, continues to react 3h, reaction is cooled to room after terminating
Temperature, dries obtained modified Nano sepiolite powder；Wherein, aqueous sodium acrylate solution, the mass ratio of acrylamide aqueous solution are 2:
1.5；The quality of white solid is the 22% of sodium acrylate solution quality；The consumption of emulsifying agent is aqueous sodium acrylate solution quality
13%；The consumption of initiator is the 15% of aqueous sodium acrylate solution quality；
(3) polystyrene, polyvinyl alcohol, polyvinylpyrrolidone and deionized water are mixed, dissolved by heating, mixing is made
Liquid A；Dispersant, foaming agent, antioxidant, heat stabilizer and deionized water are mixed, modified meerschaum obtained above is added
Powder, dispersed with stirring is uniform, obtains mixed liquid B；Wherein, the consumption of each component, be respectively in parts by weight：95 parts of polystyrene,
30 parts of polyvinyl alcohol, 15 parts of polyvinylpyrrolidone, 35 parts of deionized water, 8 parts of dispersant, 10 parts of foaming agent, antioxidant 8
Part, 10 parts of heat stabilizer, 17 parts of modified meerschaum powder；
(4) it is placed in mould and foams after being well mixed mixed liquor A and mixed liquid B, obtains high heat-resisting polystyrene bubble
Foam plastic package material.
Embodiment 3
A kind of preparation method of high heat-resisting polystyrene foam plastics packaging material, comprises the following steps：
(1) pyridine is dissolved in absolute ethyl alcohol, then adds Nano sepiolite powder, be transferred to and carry after being uniformly mixed
In the round-bottomed flask of condenser pipe, 65 DEG C are warming up to, reflow treatment 35min is cooled to 40 DEG C after terminating, filtering, solid is with anhydrous
Ethanol washing is multiple, and vacuum drying obtains white solid；Wherein, pyridine and the mass ratio of Nano sepiolite powder are 3：0.9；
(2) sodium hydrate aqueous solution and acrylic acid are mixed to prepare the aqueous sodium acrylate solution that mass concentration is 15%, will
Acrylamide is dissolved in water and the acrylamide aqueous solution that mass concentration is 20% is made；By aqueous sodium acrylate solution and acryloyl aqueous amine
Solution is mixed, and then adds white solid obtained above, is stirred 30min, is then added 1/2 emulsifying agent and 1/2 initiator, is risen
Then temperature adds remaining initiator and emulsifying agent to 70-80 DEG C of reaction 2h, continues to react 3h, reaction is cooled to room after terminating
Temperature, dries obtained modified Nano sepiolite powder；Wherein, aqueous sodium acrylate solution, the mass ratio of acrylamide aqueous solution are 2:
1.5；The quality of white solid is the 22% of sodium acrylate solution quality；The consumption of emulsifying agent is aqueous sodium acrylate solution quality
13%；The consumption of initiator is the 15% of aqueous sodium acrylate solution quality；
(3) polystyrene, polyvinyl alcohol, polyvinylpyrrolidone and deionized water are mixed, dissolved by heating, mixing is made
Liquid A；Dispersant, foaming agent, antioxidant, heat stabilizer and deionized water are mixed, modified meerschaum obtained above is added
Powder, dispersed with stirring is uniform, obtains mixed liquid B；Wherein, the consumption of each component, be respectively in parts by weight：80 parts of polystyrene,
23 parts of polyvinyl alcohol, 7 parts of polyvinylpyrrolidone, 20 parts of deionized water, 6 parts of dispersant, 7 parts of foaming agent, 5 parts of antioxidant,
7 parts of heat stabilizer, 11 parts of modified meerschaum powder；
(4) it is placed in mould and foams after being well mixed mixed liquor A and mixed liquid B, obtains high heat-resisting polystyrene bubble
Foam plastic package material.
Embodiment 4
A kind of preparation method of high heat-resisting polystyrene foam plastics packaging material, comprises the following steps：
(1) pyridine is dissolved in absolute ethyl alcohol, then adds Nano sepiolite powder, be transferred to and carry after being uniformly mixed
In the round-bottomed flask of condenser pipe, 70 DEG C are warming up to, reflow treatment 40min is cooled to 40 DEG C after terminating, filtering, solid is with anhydrous
Ethanol washing is multiple, and vacuum drying obtains white solid；Wherein, pyridine and the mass ratio of Nano sepiolite powder are 3：0.9；
(2) sodium hydrate aqueous solution and acrylic acid are mixed to prepare the aqueous sodium acrylate solution that mass concentration is 15%, will
Acrylamide is dissolved in water and the acrylamide aqueous solution that mass concentration is 20% is made；By aqueous sodium acrylate solution and acryloyl aqueous amine
Solution is mixed, and then adds white solid obtained above, is stirred 30min, is then added 1/2 emulsifying agent and 1/2 initiator, is risen
Then temperature adds remaining initiator and emulsifying agent to 70-80 DEG C of reaction 2h, continues to react 3h, reaction is cooled to room after terminating
Temperature, dries obtained modified Nano sepiolite powder；Wherein, aqueous sodium acrylate solution, the mass ratio of acrylamide aqueous solution are 2:
1.5；The quality of white solid is the 22% of sodium acrylate solution quality；The consumption of emulsifying agent is aqueous sodium acrylate solution quality
13%；The consumption of initiator is the 15% of aqueous sodium acrylate solution quality；
(3) polystyrene, polyvinyl alcohol, polyvinylpyrrolidone and deionized water are mixed, dissolved by heating, mixing is made
Liquid A；Dispersant, foaming agent, antioxidant, heat stabilizer and deionized water are mixed, modified meerschaum obtained above is added
Powder, dispersed with stirring is uniform, obtains mixed liquid B；Wherein, the consumption of each component, be respectively in parts by weight：85 parts of polystyrene,
26 parts of polyvinyl alcohol, 9 parts of polyvinylpyrrolidone, 25 parts of deionized water, 7 parts of dispersant, 8 parts of foaming agent, 6 parts of antioxidant,
7 parts of heat stabilizer, 12 parts of modified meerschaum powder；
(4) it is placed in mould and foams after being well mixed mixed liquor A and mixed liquid B, obtains high heat-resisting polystyrene bubble
Foam plastic package material.
Embodiment 5
A kind of preparation method of high heat-resisting polystyrene foam plastics packaging material, comprises the following steps：
(1) pyridine is dissolved in absolute ethyl alcohol, then adds Nano sepiolite powder, be transferred to and carry after being uniformly mixed
In the round-bottomed flask of condenser pipe, 75 DEG C are warming up to, reflow treatment 45min is cooled to 40 DEG C after terminating, filtering, solid is with anhydrous
Ethanol washing is multiple, and vacuum drying obtains white solid；Wherein, pyridine and the mass ratio of Nano sepiolite powder are 3：1.3；
(2) sodium hydrate aqueous solution and acrylic acid are mixed to prepare the aqueous sodium acrylate solution that mass concentration is 15%, will
Acrylamide is dissolved in water and the acrylamide aqueous solution that mass concentration is 20% is made；By aqueous sodium acrylate solution and acryloyl aqueous amine
Solution is mixed, and then adds white solid obtained above, is stirred 30min, is then added 1/2 emulsifying agent and 1/2 initiator, is risen
Then temperature adds remaining initiator and emulsifying agent to 70-80 DEG C of reaction 2h, continues to react 3h, reaction is cooled to room after terminating
Temperature, dries obtained modified Nano sepiolite powder；Wherein, aqueous sodium acrylate solution, the mass ratio of acrylamide aqueous solution are 2:
1.5；The quality of white solid is the 22% of sodium acrylate solution quality；The consumption of emulsifying agent is aqueous sodium acrylate solution quality
13%；The consumption of initiator is the 15% of aqueous sodium acrylate solution quality；
(3) polystyrene, polyvinyl alcohol, polyvinylpyrrolidone and deionized water are mixed, dissolved by heating, mixing is made
Liquid A；Dispersant, foaming agent, antioxidant, heat stabilizer and deionized water are mixed, modified meerschaum obtained above is added
Powder, dispersed with stirring is uniform, obtains mixed liquid B；Wherein, the consumption of each component, be respectively in parts by weight：90 parts of polystyrene,
28 parts of polyvinyl alcohol, 13 parts of polyvinylpyrrolidone, 30 parts of deionized water, 7.5 parts of dispersant, 9 parts of foaming agent, antioxidant
7.5 parts, 8 parts of heat stabilizer, 15 parts of modified meerschaum powder；
(4) it is placed in mould and foams after being well mixed mixed liquor A and mixed liquid B, obtains high heat-resisting polystyrene bubble
Foam plastic package material.
Embodiment 6
A kind of preparation method of high heat-resisting polystyrene foam plastics packaging material, comprises the following steps：
(1) pyridine is dissolved in absolute ethyl alcohol, then adds Nano sepiolite powder, be transferred to and carry after being uniformly mixed
In the round-bottomed flask of condenser pipe, 75 DEG C are warming up to, reflow treatment 20min is cooled to 40 DEG C after terminating, filtering, solid is with anhydrous
Ethanol washing is multiple, and vacuum drying obtains white solid；Wherein, pyridine and the mass ratio of Nano sepiolite powder are 3：1.4；
(2) sodium hydrate aqueous solution and acrylic acid are mixed to prepare the aqueous sodium acrylate solution that mass concentration is 15%, will
Acrylamide is dissolved in water and the acrylamide aqueous solution that mass concentration is 20% is made；By aqueous sodium acrylate solution and acryloyl aqueous amine
Solution is mixed, and then adds white solid obtained above, is stirred 30min, is then added 1/2 emulsifying agent and 1/2 initiator, is risen
Then temperature adds remaining initiator and emulsifying agent to 70-80 DEG C of reaction 2h, continues to react 3h, reaction is cooled to room after terminating
Temperature, dries obtained modified Nano sepiolite powder；Wherein, aqueous sodium acrylate solution, the mass ratio of acrylamide aqueous solution are 2:
1.5；The quality of white solid is the 22% of sodium acrylate solution quality；The consumption of emulsifying agent is aqueous sodium acrylate solution quality
13%；The consumption of initiator is the 15% of aqueous sodium acrylate solution quality；
(3) polystyrene, polyvinyl alcohol, polyvinylpyrrolidone and deionized water are mixed, dissolved by heating, mixing is made
Liquid A；Dispersant, foaming agent, antioxidant, heat stabilizer and deionized water are mixed, modified meerschaum obtained above is added
Powder, dispersed with stirring is uniform, obtains mixed liquid B；Wherein, the consumption of each component, be respectively in parts by weight：93 parts of polystyrene,
25 parts of polyvinyl alcohol, 11 parts of polyvinylpyrrolidone, 30 parts of deionized water, 6.5 parts of dispersant, 8 parts of foaming agent, antioxidant 6
Part, 5 parts of heat stabilizer, 14 parts of modified meerschaum powder；
(4) it is placed in mould and foams after being well mixed mixed liquor A and mixed liquid B, obtains high heat-resisting polystyrene bubble
Foam plastic package material.
Performance test is carried out to material made from embodiment 1-6 below.
1st, impact strength is determined
The impact strength of material is measured using W-40 types shock machine.Tried with vernier caliper measurement band breach
The size of sample, including sample thickness and indentation, there specimen width, and the marking serial numbers on sample, to facilitate test.
Experimental implementation：(1) before being tested, first Chalpy impact experimental machine be corrected, returned to zero twice.
(2) sample is fixed, breach presses switch towards pendulum release direction, and sample is destroyed, record data, and is carried out next
The test of sample.
The impact strength of sample can be calculated with equation below.
E=(W/dh) 103
In formula：
E --- cantilever beam impact strength, k J/m2
W --- the impact energy that destruction sample is absorbed, J
H --- sample thickness, mm
D --- the width of indentation, there sample, mm
2nd, tensile property
Use fracture strength of the RGT-5 types microcomputer controlled electronic universal tester to polystyrene/meerschaum composite
It is measured.The dumbbell shape batten size prepared with vernier caliper measurement, including width and thickness (each three times average).
A line is drawn centered on the midpoint of batten length direction, 25mm straight line is then drawn to two sides, two lines center section is
The effective length of sample testing.Afterwards, the marking serial numbers on batten, to facilitate test.
First specimen holder in upper clamper, the load on computer is reset, batten lower end is then clipped in lower clamping
In device, in the two lines that sensor is clipped in spacing 50mm, on computers that displacement is clear, point " RUN " is machined, and computer is certainly
Dynamic test, draws fracture strength data, preserves data, repeats above-mentioned experimental procedure, other battens are tested.
Test result is as shown in table 1:
Table 1
| Fracture strength, MPa | Impact strength J/cm2 | |
| Embodiment 1 | 45 | 1.05 |
| Embodiment 2 | 49 | 1.12 |
| Embodiment 3 | 44 | 0.99 |
| Embodiment 4 | 48 | 1.02 |
| Embodiment 5 | 50 | 1.05 |
| Embodiment 6 | 48 | 1.15 |
Above-mentioned data explanation, material tensile property produced by the present invention and excellent shock resistance.The heat of material after measured
Deformation temperature, embodiment 1-6 heat distortion temperature is 118-123 DEG C, Good Heat-resistance.
Claims (10)
1. a kind of preparation method of high heat-resisting polystyrene foam plastics packaging material, it is characterised in that comprise the following steps：
(1) pyridine is dissolved in absolute ethyl alcohol, then adds Nano sepiolite powder, be transferred to after being uniformly mixed with condensation
In the round-bottomed flask of pipe, 60-80 DEG C is warming up to, reflow treatment 30-50min is cooled to 40 DEG C, filtering, solid nothing after terminating
Water-ethanol washing is multiple, and vacuum drying obtains white solid；
(2) sodium hydrate aqueous solution and acrylic acid are mixed to prepare the aqueous sodium acrylate solution that mass concentration is 15%, by propylene
Acid amides is dissolved in water and the acrylamide aqueous solution that mass concentration is 20% is made；By aqueous sodium acrylate solution and acrylamide aqueous solution
Mixing, then adds white solid obtained above, stirs 30min, then adds 1/2 emulsifying agent and 1/2 initiator, be warming up to
70-80 DEG C of reaction 2h, then adds remaining initiator and emulsifying agent, continues to react 3h, reaction is cooled to room temperature after terminating, and does
Dry obtained modified Nano sepiolite powder；
(3) polystyrene, polyvinyl alcohol, polyvinylpyrrolidone and deionized water are mixed, dissolved by heating, mixed liquor A is made；
Dispersant, foaming agent, antioxidant, heat stabilizer and deionized water are mixed, modified meerschaum powder obtained above is added, stirs
Mix and be uniformly dispersed, obtain mixed liquid B；
(4) it is placed in mould and foams after being well mixed mixed liquor A and mixed liquid B, obtains high heat-resisting polystyrene foam modeling
Expect packaging material.
2. a kind of preparation method of high heat-resisting polystyrene foam plastics packaging material as claimed in claim 1, its feature
It is：In step (1), the particle size of the Nano sepiolite powder is 20-50nm.
3. a kind of preparation method of high heat-resisting polystyrene foam plastics packaging material as claimed in claim 1, its feature
It is：In step (1), the mass ratio of the pyridine and Nano sepiolite powder is 3：(0.7-1.5).
4. a kind of preparation method of high heat-resisting polystyrene foam plastics packaging material as claimed in claim 1, its feature
It is：In step (2), the mass concentration of the sodium hydrate aqueous solution is 50-85%.
5. a kind of preparation method of high heat-resisting polystyrene foam plastics packaging material as claimed in claim 1, its feature
It is：In step (2), the aqueous sodium acrylate solution, the mass ratio of acrylamide aqueous solution are 2:1.5.
6. a kind of preparation method of high heat-resisting polystyrene foam plastics packaging material as claimed in claim 1, its feature
It is：In step (2), the quality of the white solid is the 22% of sodium acrylate solution quality.
7. a kind of preparation method of high heat-resisting polystyrene foam plastics packaging material as claimed in claim 1, its feature
It is：In step (2), the emulsifying agent is OPEO, Ben-zylphenol Polyoxyethyl Ether, double phenethyl phenol polyoxy second
One kind in alkene ether, its consumption is the 13% of aqueous sodium acrylate solution quality.
8. a kind of preparation method of high heat-resisting polystyrene foam plastics packaging material as claimed in claim 1, its feature
It is：In step (2), the initiator is di-isopropyl peroxydicarbonate, and its consumption is aqueous sodium acrylate solution quality
15%.
9. a kind of preparation method of high heat-resisting polystyrene foam plastics packaging material as claimed in claim 1, its feature
It is：In step (3), each component consumption is respectively in parts by weight：It is 75-95 parts of polystyrene, 20-30 parts of polyvinyl alcohol, poly-
5-15 parts of vinylpyrrolidone, 15-35 parts of deionized water, 5-8 parts of dispersant, 5-10 parts of foaming agent, 4-8 parts of antioxidant, heat
5-10 parts of stabilizer, 10-17 parts of modified meerschaum powder.
10. a kind of preparation method of high heat-resisting polystyrene foam plastics packaging material as claimed in claim 1, its feature
It is：In step (3), the dispersant is fatty acid polyethylene glycol ester.
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Application publication date: 20171020 |