CN108384132A - Polystyrene foam and its preparation process - Google Patents
Polystyrene foam and its preparation process Download PDFInfo
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- CN108384132A CN108384132A CN201810248754.7A CN201810248754A CN108384132A CN 108384132 A CN108384132 A CN 108384132A CN 201810248754 A CN201810248754 A CN 201810248754A CN 108384132 A CN108384132 A CN 108384132A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/141—Hydrocarbons
-
- 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
- B65D65/38—Packaging materials of special type or form
- B65D65/44—Applications of resilient shock-absorbing materials, e.g. foamed plastics material, honeycomb material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2325/00—Characterised by the use 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; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2425/00—Characterised by the use 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; Derivatives of such polymers
- C08J2425/02—Homopolymers or copolymers of hydrocarbons
- C08J2425/04—Homopolymers or copolymers of styrene
- C08J2425/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2435/00—Characterised by the use 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 a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Derivatives of such polymers
- C08J2435/06—Copolymers with vinyl aromatic monomers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2453/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2453/02—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
-
- 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
- C08K2201/004—Additives being defined by their length
-
- 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
-
- 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
Abstract
The invention discloses a kind of polystyrene foam and its preparation processes, belong to polystyrene packing material technical field, its key points of the technical solution are that including 100 parts of polystyrene, 2.5 parts of foaming agent, 1.5 parts of nucleating agent, 3 parts of reinforced modifier, 1 part of 5 parts of plasticized modifier and adhesive, reinforced modifier includes styrene maleic anhydride copolymer and glass fibre, plasticized modifier includes waste and old polystyrol and linear styrene's butadienestyrene copolymer, it solves and is increasing the technical issues of polystyrene foam intensity can reduce its toughness, the technique effect that its toughness is promoted while increasing polystyrene foam intensity is reached.
Description
Technical field
The present invention relates to polystyrene packing material technical field, more particularly to a kind of polystyrene foam and its preparation work
Skill.
Background technology
Polystyrene foam, also known as expandable polystyrene (EPS) have the small (1.05g/cm of relative density3), thermal conductivity
It is low, water imbibition is small, impact resisting vibrating, heat-insulated, sound insulation, it is moisture-proof, subtract the advantages that hair shakes, dielectric properties are excellent, be widely used for machine
The shock-resistant packaging material and fast food of tool equipment, instrument and meter, home electric, craftwork and other fragile valuable products
Packaging.There are mainly two types of the preparation processes of EPS particles：One step impregnation technology and two step impregnation technologies；The moulding process of EPS
There are mainly two types of：One step extrusion molding and method of molding.
The prior art can refer to the Chinese patent that Authorization Notice No. is CN101475720B, and it discloses a kind of enhancing polyphenyl
The raw material for preparing of vinyl fiber cystosepiment, the benzene plate includes the synthetic fibers that length is 5-30mm, accounts for raw material gross weight
5-20%, which includes that granules of polystyrene prefoam, granules of polystyrene curing, synthetic fibers add
Add, molded process.
In the prior art, the polystyrene foam enhanced with synthetic fibers, intensity can have greatly improved, but due to
Polystyrene matter itself is crisp, its toughness can be caused to decline while promoting its intensity with synthetic fibers, thus is more easy to stress
The case where producing fracture is not concentrated, therefore how not damage its toughness while improving cystosepiment intensity is a needs
It solves the problems, such as.
Invention content
One of the objects of the present invention is to provide a kind of polystyrene foams, strong with its raising by reinforced modifier
Degree, and its toughness lost in enhancing is compensated with plasticized modifier so that the strength and toughness of polystyrene foam can
It is improved simultaneously.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of polystyrene foam, in terms of parts by weight, including 100 parts of polystyrene, 2-3 parts of foaming agent, 1-3 parts of nucleating agent,
0.5-1.5 parts of 2-4 parts of reinforced modifier, 4-6 parts of plasticized modifier and adhesive；The foaming agent is iso-butane；The increasing
Strong modifying agent includes styrene-maleic anhydride copolymer and glass fibre, the styrene-maleic anhydride copolymer and glass
The weight ratio of glass fiber is respectively 4：1；The plasticized modifier includes waste and old polystyrol and linear styrene-butadiene-
The weight ratio of styrol copolymer, the waste and old polystyrol and linear styrene-butadiene-styrol copolymer is 3：1；
Described adhesive is polyvinyl alcohol.
By using said program, glassfiber insulation is good, heat-resist, high mechanical strength, can improve polyphenyl second
The intensity of alkene, styrene-maleic anhydride copolymer (SMA) have heat-resisting quantity, good hardness and good stability of the dimension
Feature, and maleic anhydride is good compatilizer, is used as reinforced modifier by SMA and glass fibre, can make glass fibre
It is preferably merged with polystyrene, is conducive to that glass fibre is evenly dispersed, to make the intensity of polystyrene improve；Due to glass
Fibroid is crisp, and the simple glass fibre that adds can have a certain impact to the toughness of polystyrene, it is therefore desirable to toughening modifying be added
Agent is to compensate the toughness because improving loss of strength；Linear styrene-butadiene-styrol copolymer (SBS) be it is a kind of elasticity compared with
Good synthetic rubber, waste and old polystyrol is the raw material of the recycling of polystyrene, can reduce production cost, by linear
SBS is blended with waste and old polystyrol, can improve the compatibility of itself and polystyrene bead, improves its toughness, improves polyphenyl
The impact strength of vinyl foam improves processing performance；Nucleating agent is the modified additive of polymer, can improve product rigidity,
Shorten molding cycle, keeps the dimensional stability of product；Since polystyrene foam is glutinous by the foaming of polystyrene bead
Made from knot, therefore the adhesive added is conducive to reinforced modifier, plasticized modifier is merged with polystyrene bead, improves
The stability of product after it foams.
Preferably, in terms of parts by weight, including 100 parts of polystyrene, 2.5 parts of foaming agent, 1.5 parts of nucleating agent, enhancing change
Property 1 part of 3 parts of agent, 5 parts of plasticized modifier and adhesive；The foaming agent is iso-butane；The reinforced modifier includes benzene second
The weight score of alkene-copolymer-maleic anhydride and glass fibre, the styrene-maleic anhydride copolymer and glass fibre
It Wei 4：1；The plasticized modifier includes waste and old polystyrol and linear styrene-butadiene-styrol copolymer, described
The weight ratio of waste and old polystyrol and linear styrene-butadiene-styrol copolymer is 3：1；Described adhesive is poly- second
Enol.
By using said program, make the intensity for being added to the polystyrene bead of reinforced modifier and plasticized modifier
And toughness can be improved, to improve the overall performance of product.
Preferably, the nucleating agent is nano-calcium carbonate.
By using said program, nano-calcium carbonate is good with resin compatible, can effectively improve or adjust the rigid, tough of product
Property, finish and bending strength, improve processing performance, improve the rheological property, dimensional stability, Heat-resistant stable of product
Property, have the function of filling, enhancing and toughening.
Preferably, the grain size of the nano-calcium carbonate is 20-60nm.
By using said program, the grain size of nano-calcium carbonate is 20-60nm, is conducive to its dispersion.
Preferably, the length of the glass fibre is 4-6mm, fiber number 0.6-1.0D.
By using said program, the length of glass fibre is 4-6mm, fiber number 0.6-1.0D, same what can be enhanced
When also help its dispersion, improve processing performance.
The second object of the present invention is to provide a kind of preparation process of polystyrene.
The present invention above-mentioned technical purpose technical scheme is that：
The preparation process of polystyrene, includes the following steps：
(1) prefoam：Continous way pre-foaming machine is preheated, make the indoor temperature of its chamber reach 90-120 DEG C, steam pressure be
Then expandable polystyrene bead is put into the feed bin of pre-foaming machine by 0.3-0.5MPa, stirred with the speed of 30-80rpm
Bead is blown out with hot steam after 25-35s；
(2) it cures：Bead after prefoam is placed at dry and ventilated and is cured, curing temperature is 22-26 DEG C, curing time 8-
10h；
(3) it is pre-mixed：Blender is added in nucleating agent, reinforced modifier, plasticized modifier, adhesive and bead after curing
In, stir 15min；
(4) molded：After mold is preheated to 50-60 DEG C, the bead after premixing is placed in foaming agent in die cavity, Xiang Mo
It is passed through steam in chamber and drives air away；Then bead is heated to 100-120 DEG C, bead is expanded and bonded at this time；Close outlet with
And air inlet, while being water-cooled mold and internal heating steam is condensed rapidly, keep granules of polystyrene cohesive body swollen rapidly
It is swollen to be full of die cavity, it is cooled and shaped；
(5) it is aged：Obtained polystyrene foam is placed in 50-60 DEG C of drying chamber and is aged 48-72h.
By using said program, polystyrene, foaming agent, nucleating agent, reinforced modifier, plasticized modifier and bonding
Agent has excellent intensity and tough by prefoam, curing, premix, molded and ageing polystyrene obtained
Property.
Preferably, the mixing speed in the step (3) is 20-40rpm.
By using said program, mixing speed 20-40rpm is conducive to being sufficiently mixed for raw material, and can keep
The chemical stability of raw material.
Preferably, the heating rate preheated in the step (4) is 3-5 DEG C/min.
By using said program, pre-heating temperature elevation is carried out with the heating rate of 3-5 DEG C/min, make mold keep uniformly by
Heat is conducive to the stability of properties of product.
In conclusion the invention has the advantages that：
By reinforced modifier to improve the intensity of polystyrene foam, and it is compensated with plasticized modifier and is lost in enhancing
Toughness so that the strength and toughness of polystyrene foam can be improved simultaneously；SMA can improve glass fibre and polyphenyl
The compatibility of ethylene improves its intensity；Waste and old polystyrol can reduce production cost, and it is as basis material and SBS
Obtained masterbatch is blended can be evenly dispersed in polystyrene bead, improves the toughness of polystyrene foam.
Specific implementation mode
Invention is further described in detail below.
One, embodiment 1-3
Embodiment 1：A kind of polystyrene foam is prepared using following technique：
(1) prefoam：Continous way pre-foaming machine is preheated, make the indoor temperature of its chamber reach 105 DEG C, steam pressure be
Then 100kg expandable polystyrene beads are put into the feed bin of pre-foaming machine by 0.4MPa, 30s is stirred with the speed of 55rpm
Bead is blown out with hot steam afterwards；
(2) it cures：Bead after prefoam is placed at dry and ventilated and is cured, curing temperature is 24 DEG C, curing time 9h；
(3) it is pre-mixed：By 2kg nano-calcium carbonates, 3kg reinforced modifiers (2kg SMA, 1kg glass fibres), 5kg toughening modifyings
Agent (4kg waste and old polystyrols, 1kg SBS), 1kg polyvinyl alcohol and bead after curing are added in blender, with 30rpm's
Mixing speed stirs 15min；Wherein the grain size of nano-calcium carbonate is 20-40nm, and the length of glass fibre is 4-6mm, and fiber number is
0.6-1.0D；
(4) molded：With the heating rate of 4 DEG C/min, after mold is preheated to 55 DEG C, by after premixing bead with
2.5kg isobutane agent is placed in die cavity, and steam is passed through into die cavity and drives air away；Then bead is heated to 110 DEG C, this
When bead expand and bond；Outlet and air inlet are closed, while being water-cooled mold and internal heating steam is condensed rapidly,
Making granules of polystyrene cohesive body, expansion is full of die cavity rapidly, is cooled and shaped；
(5) it is aged：Obtained polystyrene foam is placed in 55 DEG C of drying chamber and is aged 60h.
Embodiment 2：A kind of polystyrene foam is prepared using following technique：
(1) prefoam：Continous way pre-foaming machine is preheated, the indoor temperature of its chamber is made to reach 90 DEG C, steam pressure 0.5MPa,
Then 100kg expandable polystyrene beads are put into the feed bin of pre-foaming machine, with after the speed of 30rpm stirring 35s by pearl
Grain is blown out with hot steam；
(2) it cures：Bead after prefoam is placed at dry and ventilated and is cured, curing temperature is 22 DEG C, curing time 10h；
(3) it is pre-mixed：By 1kg nano-calcium carbonates, 2kg reinforced modifiers (1.3kg SMA, 0.7kg glass fibres), 4kg toughenings
Blender is added in modifying agent (3.2kg waste and old polystyrols, 0.8kg SBS), 0.5kg polyvinyl alcohol and bead after curing
In, 15min is stirred with the mixing speed of 20rpm；Wherein the grain size of nano-calcium carbonate is 20-40nm, and the length of glass fibre is
4-6mm, fiber number 0.6-1.0D；
(4) molded：With the heating rate of 3 DEG C/min, after mold is preheated to 50 DEG C, by the bead and 2kg after premixing
Isobutane agent is placed in die cavity, and steam is passed through into die cavity and drives air away；Then bead is heated to 100 DEG C, at this time pearl
Grain is expanded and is bonded；Outlet and air inlet are closed, while being water-cooled mold and internal heating steam is condensed rapidly, makes to gather
Expansion is full of die cavity to styrene pellets cohesive body rapidly, is cooled and shaped；
(5) it is aged：Obtained polystyrene foam is placed in 50 DEG C of drying chamber and is aged 72h.
Embodiment 3：A kind of polystyrene foam is prepared using following technique：
(1) prefoam：Continous way pre-foaming machine is preheated, make the indoor temperature of its chamber reach 120 DEG C, steam pressure be
Then 100kg expandable polystyrene beads are put into the feed bin of pre-foaming machine by 0.3MPa, 25s is stirred with the speed of 80rpm
Bead is blown out with hot steam afterwards；
(2) it cures：Bead after prefoam is placed at dry and ventilated and is cured, curing temperature is 26 DEG C, curing time 8h；
(3) it is pre-mixed：By 3kg nano-calcium carbonates, 4kg reinforced modifiers (2.7kg SMA, 1.3kg glass fibres), 6kg toughenings
Blender is added in modifying agent (4.8kg waste and old polystyrols, 1.2kg SBS), 1.5kg polyvinyl alcohol and bead after curing
In, 15min is stirred with the mixing speed of 40rpm；Wherein the grain size of nano-calcium carbonate is 20-40nm, and the length of glass fibre is
4-6mm, fiber number 0.6-1.0D；
(4) molded：With the heating rate of 5 DEG C/min, after mold is preheated to 60 DEG C, by the bead and 3kg after premixing
Isobutane agent is placed in die cavity, and steam is passed through into die cavity and drives air away；Then bead is heated to 120 DEG C, at this time pearl
Grain is expanded and is bonded；Outlet and air inlet are closed, while being water-cooled mold and internal heating steam is condensed rapidly, makes to gather
Expansion is full of die cavity to styrene pellets cohesive body rapidly, is cooled and shaped；
(5) it is aged：Obtained polystyrene foam is placed in 60 DEG C of drying chamber and is aged 48h.
Two, comparative example 1-2
Comparative example 1：Use Authorization Notice No. for the Chinese patent of CN101475720B, it discloses a kind of enhancing polystyrene fibres
Cystosepiment is tieed up, the raw material for preparing of the benzene plate includes the synthetic fibers that length is 5-30mm, accounts for the 5- of raw material gross weight
20%, which includes granules of polystyrene prefoam, granules of polystyrene curing, the addition of synthetic fibers, mould
Mould molding procedure.
Comparative example 2：Use Authorization Notice No. for the Chinese patent of CN103467870B, it discloses a kind of toughening modifyings can
Hair property polystyrene elastic foam and preparation method thereof, component is counted in parts by weight, includes 20 parts to 60 parts of polyolefins tree
Fat, the block copolymer of 1 part to 20 parts of thermoplastic styrene, 30 parts to 80 parts of polystyrene resins, 1 part to 10 parts
Foaming agent, 0.5 part to 2.0 parts of inorganic nucleator and 0.5 part to 1 part of high molecular nucleating agent.
Three, the performance of the material of embodiment 1-3 and comparative example the 1-2 polystyrene prepared is tested, will be tested
As a result shown in table 1.
The performance test table of eps foam prepared by 1 embodiment 1-3 of table and comparative example 1-2
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Test stone |
| Tensile strength (MPa) | 24.5 | 24.7 | 25.1 | 20.1 | 14.7 | GB/T9641—1988 |
| Impact strength (KJ/m2) | 18.3 | 17.9 | 18.1 | 9.8 | 18.0 | GB/T1843-2008 |
| Bending strength (MPa) | 19.3 | 20.1 | 19.8 | 8.7 | 20.2 | GB/T8812.2—2007 |
The tensile strength of EPS in comparative example 1 it can be seen from 1 data of table is higher, but its impact strength and bending strength
All relatively low, overall performance is bad；And the impact strength and bending strength in comparative example 2 are relatively good, but its tensile strength ratio
Relatively low, overall performance is bad；And EPS tensile strengths produced by the present invention have significantly relative to comparative example 1 and comparative example 2
It improves, and under the premise of its tensile strength improves, impact strength and bending strength are reduced there is no apparent, explanation
EPS's prepared by the present invention can have preferable intensity and toughness, comprehensive comparison good simultaneously.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Claims (8)
1. a kind of polystyrene foam, it is characterised in that：In terms of parts by weight, including 100 parts of polystyrene, 2-3 parts of foaming agent,
0.5-1.5 parts of 1-3 parts of nucleating agent, 2-4 parts of reinforced modifier, 4-6 parts of plasticized modifier and adhesive；
The foaming agent is iso-butane；
The reinforced modifier includes styrene-maleic anhydride copolymer and glass fibre, and the phenylethylene-maleic anhydride is total
The weight ratio of polymers and glass fibre is respectively 2：1；
The plasticized modifier includes waste and old polystyrol and linear styrene-butadiene-styrol copolymer, described waste and old
The weight ratio of polystyrene and linear styrene-butadiene-styrol copolymer is 4：1；
Described adhesive is polyvinyl alcohol.
2. polystyrene foam according to claim 1, it is characterised in that：In terms of parts by weight, including polystyrene 100
Part, 2.5 parts of foaming agent, 1.5 parts of nucleating agent, 3 parts of reinforced modifier, 5 parts of plasticized modifier and 1 part of adhesive；
The foaming agent is iso-butane；
The reinforced modifier includes styrene-maleic anhydride copolymer and glass fibre, and the phenylethylene-maleic anhydride is total
The weight ratio of polymers and glass fibre is respectively 4：1；
The plasticized modifier includes waste and old polystyrol and linear styrene-butadiene-styrol copolymer, described waste and old
The weight ratio of polystyrene and linear styrene-butadiene-styrol copolymer is 3：1；
Described adhesive is polyvinyl alcohol.
3. polystyrene foam according to claim 1, it is characterised in that：The nucleating agent is nano-calcium carbonate.
4. polystyrene foam according to claim 3, it is characterised in that：The grain size of the nano-calcium carbonate is 20-
60nm。
5. polystyrene foam according to claim 1, it is characterised in that：The length of the glass fibre is 4-6mm, fine
Degree is 0.6-1.0D.
6. the preparation process of polystyrene foam, it is characterised in that：Include the following steps：
(1) prefoam：Continous way pre-foaming machine is preheated, make the indoor temperature of its chamber reach 90-120 DEG C, steam pressure be
Then expandable polystyrene bead is put into the feed bin of pre-foaming machine by 0.3-0.5MPa, stirred with the speed of 30-80rpm
Bead is blown out with hot steam after 25-35s；
(2) it cures：Bead after prefoam is placed at dry and ventilated and is cured, curing temperature is 22-26 DEG C, curing time 8-
10h；
(3) it is pre-mixed：Blender is added in nucleating agent, reinforced modifier, plasticized modifier, adhesive and bead after curing
In, stir 15min；
(4) molded：After mold is preheated to 50-60 DEG C, the bead after premixing is placed in foaming agent in die cavity, Xiang Mo
It is passed through steam in chamber and drives air away；Then bead is heated to 100-120 DEG C, bead is expanded and bonded at this time；Close outlet with
And air inlet, while being water-cooled mold and internal heating steam is condensed rapidly, keep granules of polystyrene cohesive body swollen rapidly
It is swollen to be full of die cavity, it is cooled and shaped；
(5) it is aged：Obtained polystyrene foam is placed in 50-60 DEG C of drying chamber and is aged 48-72h.
7. the preparation process of polystyrene foam according to claim 6, it is characterised in that：Stirring in the step (3)
It is 20-40rpm to mix speed.
8. the preparation process of polystyrene foam according to claim 6, it is characterised in that：Preheating in the step (4)
Heating rate be 3-5 DEG C/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810248754.7A CN108384132A (en) | 2018-03-24 | 2018-03-24 | Polystyrene foam and its preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810248754.7A CN108384132A (en) | 2018-03-24 | 2018-03-24 | Polystyrene foam and its preparation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108384132A true CN108384132A (en) | 2018-08-10 |
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| CN201810248754.7A Pending CN108384132A (en) | 2018-03-24 | 2018-03-24 | Polystyrene foam and its preparation process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112812454A (en) * | 2021-01-06 | 2021-05-18 | 重庆亦缘鸢科技有限公司 | Glass fiber polystyrene sound-absorbing board |
| CN114874580A (en) * | 2022-03-25 | 2022-08-09 | 古正煇 | Elastic addition master batch containing plant fibers, preparation method thereof and application thereof in EPS (expandable polystyrene) material |
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| CN102199328A (en) * | 2011-03-22 | 2011-09-28 | 天津工业大学 | Preparation method of polystyrene composite material frame |
| CN103121256A (en) * | 2011-11-18 | 2013-05-29 | 大连得达科技发展有限公司 | Process for molding heat-preserving polystyrene foam plastic products |
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| CN102199328A (en) * | 2011-03-22 | 2011-09-28 | 天津工业大学 | Preparation method of polystyrene composite material frame |
| CN103121256A (en) * | 2011-11-18 | 2013-05-29 | 大连得达科技发展有限公司 | Process for molding heat-preserving polystyrene foam plastic products |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112812454A (en) * | 2021-01-06 | 2021-05-18 | 重庆亦缘鸢科技有限公司 | Glass fiber polystyrene sound-absorbing board |
| CN114874580A (en) * | 2022-03-25 | 2022-08-09 | 古正煇 | Elastic addition master batch containing plant fibers, preparation method thereof and application thereof in EPS (expandable polystyrene) material |
| CN114874580B (en) * | 2022-03-25 | 2024-02-09 | 古正煇 | Elastic additive master batch containing plant fibers, preparation method thereof and application thereof in EPS material |
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Application publication date: 20180810 |