CN107857891A - The preparation method of polymer foams - Google Patents
The preparation method of polymer foams Download PDFInfo
- Publication number
- CN107857891A CN107857891A CN201710923932.7A CN201710923932A CN107857891A CN 107857891 A CN107857891 A CN 107857891A CN 201710923932 A CN201710923932 A CN 201710923932A CN 107857891 A CN107857891 A CN 107857891A
- Authority
- CN
- China
- Prior art keywords
- foamed
- compound resin
- water
- salt
- foaming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C08J9/0004—Use of compounding ingredients, the chemical constitution of which is unknown, broadly defined, or irrelevant
- C08J9/0009—Phase change materials
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- 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
- C08J2327/00—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 halogen; Derivatives of such polymers
- C08J2327/02—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 halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—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 halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
- C08J2361/16—Condensation polymers of aldehydes or ketones with phenols only of ketones with phenols
-
- 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
- C08J2431/00—Characterised by the use of 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 acyloxy radical of a saturated carboxylic acid, or carbonic acid, or of a haloformic acid
- C08J2431/02—Characterised by the use of omopolymers or copolymers of esters of monocarboxylic acids
- C08J2431/04—Homopolymers or copolymers of vinyl acetate
-
- 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
- C08J2433/00—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
-
- 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
- C08J2433/00—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
-
- 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
- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2471/02—Polyalkylene oxides
Abstract
The preparation method of polymer foams, belong to foam technology field.Solve in existing foamed material preparation technology, foam inside is difficult to the technical barrier of timely cooling and shaping.The method of the present invention, it is before foaming is processed, first resin to be foamed and water imbibition additive melting mixing is granulated or is further processed into moulded from foam module, obtains compound resin to be foamed；Then compound resin to be foamed is first subjected to water suction processing before foaming is processed, then foamed, obtain polymer foams, or, compound resin to be foamed is subjected to water suction processing while foaming and processing, obtains polymer foams.This method, using water as internal coolant, process is green, and safety and stability, cost is cheap, can produce thicker foamed material, and the foamed material quality prepared is more stable.
Description
Technical field
The invention belongs to foam technology field, and in particular to a kind of preparation method of polymer foams.
Background technology
Foamed material is as a kind of composite using gas as filler, not only light weight, and material saving, specific strength is high, and
And with performances such as excellent heat-insulated, sound insulation, bufferings.Foamed material is widely used in industry, agricultural, communications and transportation, motion
The field such as equipment and Aero-Space.Many polymer can be used to manufacture foamed material, wherein polystyrene foam, polyurethane
Foam, polyethylene, polyvinyl chloride foam and sponge rubber foam are to apply wide foamed material kind.And some are tied
The polymer of crystalline substance, such as PP, nylon, polyester, melt strength declines rapidly after melting due to them, makes their foaming process
Often it is difficult to control, improves their production difficulty, limits their application.
The production method of plastic foam is varied, wherein the preparation method of the most commonly used foamed material has：Autoclave is sent out
Bubble, moulded from foam, extrusion foaming and injection foaming etc..Although the equipment and specific operation process of these foaming methods are poor
It is different, but the general principle of its bubble growth is all similar：First stage, foaming agent are dispersed into resin matrix；Second-order
Section, by the induction of temperature and pressure, bubble nucleating simultaneously grows and forms foam of polymers；Phase III, foam of polymers cooling
Sizing obtains foam product.Improvement and research in terms of many foam productions are all based on principle above.
People have found in production practices, larger foam material material are being prepared, especially with moulded from foam or extrusion
During foam process, often there is phenomena such as inside and outside aperture difference is big, and core is shown and hole, melting collapse, discoloration in foam.This is
Because after the completion of foaming second stage, polymer has formed foaming structure, and thermal conductivity factor declines, although close to cuticle region
Foam be easier to cooling sizing, but be difficult to be passed away away from the core area heat of epidermis, it is impossible to realize rapid cooling
Sizing, and change colour, abscess merges, melts phenomena such as collapsing.For the moulded from foam, extrusion foaming and note of many polymer
Foam process is moulded, due to being difficult to solve the technical barrier of quick cooling and shaping inside phase III foam of polymers, so often
Relatively thin froth pulp can only be produced.During as needed thicker product, then need multi-layer bonded by being carried out to the small product of thickness
To realize, cost is not only improved, and influence product quality.
We have found by theoretical modeling and substantial amounts of experimental verification, are sent out for polymer of the blowing temperature higher than 100 DEG C
Bubble technique, before foaming, a certain amount of moisture is contained in polymeric material, during foaming, these moisture will vaporize simultaneously
Substantial amounts of latent heat of phase change is absorbed, makes the temperature of foam inside reduce rapidly, has the function that foam cooling and shaping, prevents foaming
The phenomenon that abscess caused by the cooling not in time of three stages and hole, melting collapse or even changed colour.This production to foam has very
Important practical significance.
The content of the invention
In view of this, the present invention provides a kind of preparation method of polymer foams.
Present invention aim to address in existing foam technology technique, the technology that foam inside is difficult to timely cooling and shaping is difficult
Topic, i.e.,：The difficult technical barrier of polymer foaming cooling and shaping stage internal cooling, there is provided one kind is by water as internal cooling
The preparation method of the polymer foams of agent.
It is as follows that the present invention solves the technical scheme that above-mentioned technical problem is taken：
The preparation method of polymer foams：
(1) before foaming is processed, resin to be foamed and water imbibition additive melting mixing is granulated, obtained to be foamed compound
Resin；
Or, before foaming is processed, first resin to be foamed and water imbibition additive melting mixing are granulated, are subsequently processed into mould
Foam module, obtain compound resin to be foamed；
Or, before foaming is processed, first by resin to be foamed, water imbibition additive and CBA melting mixing and process
Into moulded from foam module, compound resin to be foamed is obtained；
(2) compound resin to be foamed first carries out water suction processing before foaming is processed, then foams, and obtains foam of polymers material
Material, or, the compound resin to be foamed carries out water suction processing while foaming and processing, and obtains polymer foams；
It in step (2), if compound resin to be foamed does not contain CBA, need to be foamed, be foamed using foaming agent
Agent is physical blowing agent or CBA；
The resin to be foamed does not chemically react below blowing temperature, with water, and can use extrusion foaming, mould
One or more methods prepare foamed material in foam, injection foaming, and resin to be foamed is fluoropolymer resin and/or composite wood
Material；
Water imbibition additive is to have spongy material, in compound resin to be foamed, the quality point of water imbibition additive
Number is 0.2-10%；
The quality for the water that compound resin to be foamed absorbs is the 0.5-20% of compound resin gross mass to be foamed after water suction.
Preferably, the process of step (2) is as follows：
(21) compound resin to be foamed is put into closed container, and adds water logging and do not have compound resin to be foamed, carried
High container inner pressure is to 0.5MPa-10MPa, and temperature is to 80-350 DEG C, after keeping temperature and pressure decentralization to set to 0 .5-24h, drop
Temperature pressure release, is taken out to 30 DEG C, obtains the compound resin to be foamed of pre- water suction in low container；
(22) if compound resin to be foamed is graininess, the compound resin and foaming agent to be foamed that absorb water in advance are added to crowded
Go out melting mixing in foaming machine or injection foaming equipment, obtained melt is in extrusion foaming machine die orifice or injection foaming machine mould
Foaming in die cavity, obtains polymer foams；
If compound resin to be foamed is module shape and is free of CBA, the compound resin to be foamed to absorb water in advance is put into
In moulded from foam mould, and physical blowing agent is added into mould, temperature-pressure, it is to be foamed compound to treat that physical blowing agent is immersed in
In resin module, die sinking foaming, polymer foams are obtained；
If compound resin to be foamed is module shape and contains CBA, the compound resin to be foamed to absorb water in advance is put into mould
In foam mould, temperature-pressure, die sinking foaming, polymer foams are obtained.
Preferably, the process of step (2) is as follows：
If compound resin to be foamed is graininess, by compound resin to be foamed, foaming agent and water be added to extrusion foaming or
Melting mixing in injection foaming equipment, the quality of water is added as compound resin to be foamed and the 0.5-20% of water gross mass, then
Compound resin melt to be foamed with water and foaming agent is sent out in extrusion foaming machine die orifice or injection foaming machine mold cavity
Type is soaked, obtains polymer foams；
The foaming agent is physical blowing agent or CBA；
If compound resin to be foamed is module shape and is free of CBA, compound resin to be foamed is put into moulded from foam
In mould, and water is added, compound resin to be foamed is completely submerged in water, physical blowing agent is added into mould, heating adds
Pressure, in equilibrium process, foaming agent and water are immersed in compound resin module to be foamed, obtain the compound tree to be foamed containing water
Fat module, die sinking foaming, obtains polymer foams；
If compound resin to be foamed is module shape and contains CBA, compound resin to be foamed is put into moulded from foam mould
In tool, and water is added, compound resin to be foamed is completely submerged in water, temperature-pressure, in equilibrium process, water, which is immersed in, to be treated
In the compound resin module that foams, the compound resin module to be foamed containing water is obtained, die sinking foaming, obtains foam of polymers material
Material.
Preferably, the resin to be foamed is polypropylene, polyethylene, polystyrene, polyvinyl chloride, polyolefin copolymerization
Thing, polystyrenic copolymer, (methyl) esters of acrylic acid homopolymer, (methyl) esters of acrylic acid homopolymerization composition copolymer, poly- first
One or more in aldehyde, polyvinyl alcohol, polyaniline, polyether-ether-ketone.
Preferably, in the compound resin to be foamed, the mass fraction of water imbibition additive is 0.2-5%.
Preferably, described water imbibition additive is hydrophilic macromolecule, hydrophilic organics hydrophilicity, water absorbing inorganic thing powder
One or more in last, solvable inorganic salts.
Preferably, the hydrophilic macromolecule is polyethylene glycol, ethylene-vinyl acetate copolymer, polypropylene glycol, poly-vinegar acid
Ethene, polyacrylamide, polyacrylic acid, polyacrylate, polyacrylate, starch, cellulose, polypropylene-polyethylene glycol connect
Graft copolymer, polypropylene-polyethyleneglycol block copolymer, polyethylene-polyethylene alcohol graft copolymer, polyethylene-polyethylene alcohol
Block copolymer, polystyrene-poly ethylene glycol graft copolymer, polystyrene-poly ethylene glycol block copolymer, polypropylene-poly-
One or more in acrylic copolymer, polypropylene-acrylate copolymer, polypropylene-polyacrylic acid salt copolymer；
The hydrophilic organics hydrophilicity is ethylene glycol, propane diols, glycerine, pentaerythrite, stearic acid, stearic acid sodium salt, tristearin
Acid potassium salt, stearic acid calcium salt, stearic acid zinc salt, palmitic acid, palmitic acid sodium salt, palmitin acid potassium salt, palmitin acid calcium salt, zinc palmitate
Salt, adipic acid, adipic acid sodium salt, adipic acid sylvite, adipic acid calcium salt, adipic acid zinc salt, suberic acid, suberic acid sodium salt, pungent two
Acid potassium salt, suberic acid calcium salt, suberic acid zinc salt, decanedioic acid, decanedioic acid sodium salt, decanedioic acid calcium salt, decanedioic acid zinc salt, hexamethylene diamine,
Octamethylenediamine, oleamide, erucyl amide, cetyl trimethylammonium bromide, alkylpolyoxyethylene, myristyl polyoxy
It is vinethene, ceteth, Steareth, APES, tripalmitin, hard
Glycerol, department's Pan's series of surfactants, TWEEN Series surfactant, bromide sixteen alkyls pyridine, bromododecane
One kind in yl pyridines, lauryl sodium sulfate, neopelex, hexadecanyl phosphate, octadecyl phosphate
It is or a variety of；
The water absorbing inorganic thing powder is expanded perlite, expanded vermiculite, sepiolite, montmorillonite, diatomite, concave convex rod
One or more in stone, bentonite, sepiolite, zeolite, molecular sieve；
The solvable inorganic salts are the borate of sodium, the carbonate of sodium, the nitrate of sodium, the phosphate of sodium, the sulfuric acid of sodium
Salt, the chloride salt of sodium, the bromide salt of sodium, the borate of potassium, the carbonate of potassium, the nitrate of potassium, the phosphate of potassium, potassium
Sulfate, the chloride salt of potassium, the bromide salt of potassium, the borate of magnesium, the carbonate of magnesium, the nitrate of magnesium, magnesium phosphate,
The sulfate of magnesium, the chloride salt of magnesium, the bromide salt of magnesium, the borate of calcium, the carbonate of calcium, the nitrate of calcium, the phosphorus of calcium
Hydrochlorate, the sulfate of calcium, the chloride salt of calcium, the bromide salt of calcium, the borate of aluminium, the carbonate of aluminium, the nitrate of aluminium, aluminium
Phosphate, the sulfate of aluminium, the chloride salt of aluminium, the bromide salt of aluminium, the borate of iron, the carbonate of iron, the nitric acid of iron
Salt, the phosphate of iron, the sulfate of iron, the chloride salt of iron, the bromide salt of iron, ferrous borate, ferrous carbonate,
The nitrate of ferrous iron, ferrous phosphate, ferrous sulfate, ferrous chloride salt, ferrous bromide salt, the boric acid of copper
Salt, the carbonate of copper, the nitrate of copper, the phosphate of copper, the sulfate of copper, the chloride salt of copper, the bromide salt of copper, zinc
Borate, the carbonate of zinc, the nitrate of zinc, the phosphate of zinc, the sulfate of zinc, the chloride salt of zinc, the bromide salt of zinc
In one or more.
Preferably, the CBA be sodium acid carbonate, ammonium carbonate, N, N- dinitrosopentamethlyene tetramines, N, N-
Bis- sub- terephthalate amine of dimethyl-N, N-, azodicarbonamide, azodiisobutyronitrile, azoformic acid isopropyl ester, azo diformazan
Diethyl phthalate, two azoaminobenzenes, Barium azodicarboxylate, 4,4 ,-disulfonyl hydrazide diphenyl ether, to benzene sulfonyl hydrazide, 3,3- disulfonyls
Hydrazine diphenyl sulphone (DPS), 4,4, the one or more in-two benzene disulfohydrazides, benzen 1,3 disulphonyl hydrazide, 1,4- benzene disulfohydrazides.
Preferably, the physical blowing agent is carbon dioxide, nitrogen, air, argon gas, methane, ethane, propane, butane, penta
One or more in alkane.
Preferably, it is addition bubble nucleating agent, antioxidant, anti-quiet during the melting mixing of step 1 and/or step 2
One or more in electric agent, antiseptic, plasticizer, lubricant, brightener, conductive auxiliary agent, crystal controlling agent.
The present invention principle be：Water imbibition additive is first added into resin to be foamed, these water imbibition additives add
Enter to make material that there are water absorbing properties, before foaming processing or in foaming process, the method by heating immersion, in advance in the material
A certain amount of water is introduced, material is when temperature and pressure is induced and foamed, water rapid vaporization under blowing temperature, and absorbs a large amount of phases
Become latent heat, foam inside temperature is reduced rapidly, realizes the effect of cooling sizing.
Compared with prior art, beneficial effects of the present invention are：
The method of the polymer foams of the present invention, using water as internal coolant, solves polymer foaming process
In, the inside and outside foam aperture difference that foam inside is difficult to caused by cooling sizing in time is big, and internal foam discoloration, inner cell is simultaneously
The problem of hole is serious, and inner foam layer collapses, therefore foamed material quality prepared by the method for the present invention is more stable, can produce thickness
Degree reaches 30cm, or even more than 30cm foamed material；
The method of the polymer foams of the present invention, green using water as internal coolant, safety and stability, into
This is cheap.
Embodiment
In order to further appreciate that the present invention, the preferred embodiments of the invention are retouched with reference to embodiment
State, but it is to be understood that these descriptions are simply for further explanation the features and advantages of the present invention rather than to patent of the present invention
It is required that limitation.
The preparation method of the polymer foams of the present invention：
(1) before foaming is processed, resin to be foamed and water imbibition additive melting mixing is granulated, obtained to be foamed compound
Resin；
Or, before foaming is processed, first resin to be foamed and water imbibition additive melting mixing are granulated, are subsequently processed into mould
Foam module, obtain compound resin to be foamed；
Or, before foaming is processed, first by resin to be foamed, water imbibition additive and CBA melting mixing and process
Into moulded from foam module, compound resin to be foamed is obtained；
Wherein, melting mixing is method well known in the art, can be banbury melt mixing methods, and single screw rod mixes
Method or double-screw mixing are legal, but it is several to be not limited to the above；The method for being processed into moulded from foam module is well known in the art
Method, can be injection molding, extrusion molding, compression molding etc.；The addition of CBA is those skilled in the art
Common dose, the addition of usual CBA are the 0.2-10% of resin quality to be foamed.
(2) pre-absorption quality is compound tree to be foamed before compound resin to be foamed foaming processing or in foaming process
The 0.5-20% of lipid amount moisture, foaming is then induced to produce abscess again.
As one of implementation, the compound resin to be foamed first carries out water suction processing before foaming is processed, then foams, and obtains
It is as follows to the compound resin to be foamed to absorb water in advance, process：
(21) compound resin to be foamed is put into closed autoclave, and adds water logging and do not have compound resin to be foamed,
Autoclave valve is closed, improving pressure in autoclave, to 0.5MPa-10MPa, temperature keeps the temperature and pressure to 80-350 DEG C
After decentralization sets to 0 .5-24h, high pressure temperature in the kettle is reduced to 0-40 DEG C, pressure release, takes out, obtains the compound tree to be foamed of pre- water suction
Fat, the quality of the water of absorption are the 0.5-20% of compound resin quality to be foamed；
(22) if compound resin to be foamed is graininess, the compound resin and foaming agent to be foamed that absorb water in advance are added to crowded
Go out in foaming machine or injection foaming equipment, melting mixing, obtained melt is in extrusion foaming machine die orifice or injection foaming machine mould
Have foaming in die cavity, obtain polymer foams；
Wherein, foaming agent is physical blowing agent or CBA, and the addition of foaming agent is normal for those skilled in the art
With dosage, the addition of usual foaming agent is the 0.2-10% of the compound resin quality to be foamed to absorb water in advance, extrusion foaming machine or
Injection foaming machines 130-400 DEG C of temperature；
If compound resin to be foamed is module shape and is free of CBA, the compound resin to be foamed to absorb water in advance is put into
In moulded from foam mould, and physical blowing agent being added into mould, be heated up to 130-400 DEG C, holding pressure is 0.5-20MPa,
1-10h is permeated, treats that physical blowing agent is immersed in compound resin module to be foamed, reaches osmotic equilibrium, die sinking foaming, is gathered
Polymer foam；
Wherein, the addition of physical blowing agent is determined by pressure, i.e., at the required temperatures, pressure is guarantee system
0.5-20MPa；
If compound resin to be foamed is module shape and contains CBA, the compound resin to be foamed to absorb water in advance is put into mould
In foam mould, 130-400 DEG C is heated up to, is forced into 0.5-20MPa, 0.2-10h is incubated, die sinking foaming, obtains polymer
Foamed material.
In above-mentioned extrusion foaming, injection foaming, moulded from foam technique, the resin to be foamed that absorbs water in advance, either
Grain or module, moisture are respectively provided with internal cooling effect in foaming process.
As another implementation, the compound resin to be foamed carries out water suction processing while foaming and processing, and is treated
The compound resin to be foamed of foaming, process are as follows：
If compound resin to be foamed is graininess, compound resin to be foamed, foaming agent and water are added into extrusion foaming sets
Melting mixing in standby or injection foaming equipment, the quality of water is added as compound resin to be foamed and the 0.5-20% of water gross mass,
Then by the compound resin melt to be foamed with water and foaming agent in extrusion foaming machine die orifice or injection foaming machine mold cavity
Interior foaming, obtains polymer foams；
Wherein, foaming agent is physical blowing agent or CBA, and the addition of foaming agent is normal for those skilled in the art
With dosage, the addition of usual foaming agent is the 0.2-10% of compound resin quality to be foamed, extrusion foaming machine or injection foaming
Machine 130-400 DEG C of temperature；
In above-mentioned extrusion foaming, injection foaming technique, composite resin particle to be foamed absorbs water in process
Point, the compound resin melten gel to be foamed with moisture is formed, moisture plays internal cooling effect in foaming process.
If compound resin to be foamed is module shape and is free of CBA, compound resin to be foamed is put into moulded from foam
In mould, and water is added, compound resin to be foamed is completely submerged in water, physical blowing agent is added into mould, be heated up to
130-400 DEG C, holding pressure is 0.5-20MPa, permeates 1-10h, and foaming agent and water are immersed in compound resin module to be foamed,
Reach osmotic equilibrium, obtain the compound resin module to be foamed containing water, die sinking foaming, obtain polymer foams；
Wherein, the addition of physical blowing agent is determined by pressure, i.e., at the required temperatures, pressure is guarantee system
0.5-20MPa；
In above-mentioned moulded from foam technique, compound resin module to be foamed absorbs moisture in process, has interior
Portion's cooling effect.
If compound resin to be foamed is module shape and contains CBA, compound resin to be foamed is put into moulded from foam mould
In tool, and water is added, compound resin to be foamed is completely submerged in water, be heated up to 130-400 DEG C, be forced into 0.5-20MPa,
Insulation 1-10h water is immersed in compound resin module to be foamed, obtains the compound resin module to be foamed containing water, die sinking hair
Bubble, obtains polymer foams.In above-mentioned moulded from foam technique, compound resin module to be foamed is inhaled in process
Moisture is received, there is internal cooling effect.
In the present invention, resin to be foamed does not chemically react below blowing temperature with water, and can use extrusion
One or more methods prepare foamed material in foaming, moulded from foam, injection foaming.Resin to be foamed can be that thermoplastic poly closes
Resin, or polymer composites (i.e. the mixture of various kinds of resin, fluoropolymer resin added with additive etc.),
Can also be both mixtures.Preferably, resin to be foamed is polypropylene, polyethylene, polystyrene, polyvinyl chloride, polyolefin
Based copolymer, polystyrenic copolymer, (methyl) esters of acrylic acid homopolymer, the copolymerization of (methyl) esters of acrylic acid homopolymer
One or more in thing, polyformaldehyde, polyvinyl alcohol, polyaniline, polyether-ether-ketone.
In the present invention, water imbibition additive is to have spongy material, in compound resin to be foamed, water imbibition additive
Mass fraction be 0.2-10%, preferably 0.2-5%.Water imbibition additive can make compound resin to be foamed absorb its own matter
The 0.5-20% of amount water.Water imbibition additive be hydrophilic macromolecule, hydrophilic organics hydrophilicity, water absorbing inorganic thing powder, can
One or more in molten inorganic salts, as hydrophilic macromolecule be polyethylene glycol, ethylene-vinyl acetate copolymer, polypropylene glycol,
Polyvinyl acetate, polyacrylamide, polyacrylic acid, polyacrylate, polyacrylate, starch, cellulose, polypropylene-poly- second
Glycol graft copolymer, polypropylene-polyethyleneglycol block copolymer, polyethylene-polyethylene alcohol graft copolymer, polyethylene-poly-
Vinyl alcohol block copolymer, polystyrene-poly ethylene glycol graft copolymer, polystyrene-poly ethylene glycol block copolymer, poly- third
Alkene-acrylic copolymer, polypropylene-acrylate copolymer, one kind in polypropylene-polyacrylic acid salt copolymer or more
Kind；Hydrophilic organics hydrophilicity is ethylene glycol, propane diols, glycerine, pentaerythrite, stearic acid, stearic acid sodium salt, stearic acid sylvite, hard
Resin acid calcium salt, stearic acid zinc salt, palmitic acid, palmitic acid sodium salt, palmitin acid potassium salt, palmitin acid calcium salt, palmitic acid zinc salt, oneself two
Acid, adipic acid sodium salt, adipic acid sylvite, adipic acid calcium salt, adipic acid zinc salt, suberic acid, suberic acid sodium salt, suberic acid sylvite,
Suberic acid calcium salt, suberic acid zinc salt, decanedioic acid, decanedioic acid sodium salt, decanedioic acid calcium salt, decanedioic acid zinc salt, hexamethylene diamine, octamethylenediamine,
Oleamide, erucyl amide, cetyl trimethylammonium bromide, alkylpolyoxyethylene, myristyl APEO,
Ceteth, Steareth, APES, tripalmitin, stearic acid are sweet
Grease, department's Pan series of surfactants, TWEEN Series surfactant, bromide sixteen alkyls pyridine, bromododecane yl pyridines,
One or more in lauryl sodium sulfate, neopelex, hexadecanyl phosphate, octadecyl phosphate；
Water absorbing inorganic thing powder is expanded perlite, expanded vermiculite, sepiolite, montmorillonite, diatomite, attapulgite, bentonite, sea
One or more in afrodite, zeolite, molecular sieve；Solvable inorganic salts be the borate of sodium, the carbonate of sodium, sodium nitrate,
The phosphate of sodium, the sulfate of sodium, the chloride salt of sodium, the bromide salt of sodium, the borate of potassium, the carbonate of potassium, the nitre of potassium
Hydrochlorate, the phosphate of potassium, the sulfate of potassium, the chloride salt of potassium, the bromide salt of potassium, the borate of magnesium, the carbonate of magnesium, magnesium
Nitrate, the phosphate of magnesium, the sulfate of magnesium, the chloride salt of magnesium, the bromide salt of magnesium, the borate of calcium, the carbonic acid of calcium
Salt, the nitrate of calcium, the phosphate of calcium, the sulfate of calcium, the chloride salt of calcium, the bromide salt of calcium, the borate of aluminium, aluminium
Carbonate, the nitrate of aluminium, the phosphate of aluminium, the sulfate of aluminium, the chloride salt of aluminium, the bromide salt of aluminium, iron borate,
The carbonate of iron, the nitrate of iron, the phosphate of iron, the sulfate of iron, the chloride salt of iron, the bromide salt, ferrous of iron
Borate, ferrous carbonate, ferrous nitrate, ferrous phosphate, ferrous sulfate, ferrous chloride salt, Asia
The chlorination of the bromide salt of iron, the borate of copper, the carbonate of copper, the nitrate of copper, the phosphate of copper, the sulfate of copper, copper
Thing salt, the bromide salt of copper, the borate of zinc, the carbonate of zinc, the nitrate of zinc, the phosphate of zinc, the sulfate of zinc, zinc
Chloride salt, zinc bromide salt in one or more.The water imbibition additive of the present invention be not limited to it is foregoing several,
All compound, powder body material or resinae additives that can play water suction sexual function, it is former to reach water suction to be used equally for patent
The effect of position cooling Foamex, belongs to scope described in this patent.
In the present invention, the coal addition position of foaming agent, can according to adding foaming agent species and property, selection with it is to be foamed multiple
Resin is added in extrusion foaming or injection foaming equipment together, can also be selected in extrusion foaming or injection foaming equipment
Melt zone adds.In general physical blowing agent adds in extrusion foaming or the melt zone of injection foaming equipment, and CBA
With being added to together with compound resin to be foamed in extrusion foaming or injection foaming equipment.Technical staff can be according to the actual situation that foams
It is adjusted.The CBA of the present invention is preferably sodium acid carbonate, ammonium carbonate, N, N- dinitrosopentamethlyene tetramines, N,
Bis- sub- terephthalate amine of N- dimethyl-N, N-, azodicarbonamide, azodiisobutyronitrile, azoformic acid isopropyl ester, azo two
Formic acid diethylester, two azoaminobenzenes, Barium azodicarboxylate, 4,4 ,-disulfonyl hydrazide diphenyl ether, to benzene sulfonyl hydrazide, the sulphurs of 3,3- bis-
Hydrazides diphenyl sulphone (DPS), 4,4, the one or more in-two benzene disulfohydrazides, benzen 1,3 disulphonyl hydrazide, 1,4- benzene disulfohydrazides.Physics
Foaming agent is preferably the one or more in carbon dioxide, nitrogen, air, argon gas, methane, ethane, propane, butane, pentane.
, can also be according to the experience in the industry, in preparation process in order to optimize properties of product or foam performance in the present invention
In, typically during the melting mixing of step 1 and/or step 2, addition bubble nucleating agent, antioxidant, antistatic additive,
One or more in antiseptic, plasticizer, lubricant, brightener, conductive auxiliary agent, crystal controlling agent.
The preferred embodiments of the present invention are illustrated below, it will be appreciated that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
Embodiment 1
By polypropylene and Sodium Polyacrylate in mass ratio 90:The 10 melting mixing granulations in double screw extruder, are made and treat
Foamable composite resin particle；Composite resin particle to be foamed is fitted into autoclave, addition is enough to submerge compound resin to be foamed
The water of particle, and be stirred continuously, autoclave temp is increased to 170 DEG C, and pressure is increased to 0.5MPa, pressurize 0.5h in kettle, then
Autoclave temp is reduced to 30 DEG C, rapid pressure release, the composite resin particle to be foamed of pre- water suction is obtained, is surveyed through thermogravimetry
, water absorption is the 15% of compound resin to be foamed；The composite resin particle to be foamed to absorb water in advance is added to extrusion foaming equipment
In, carbon dioxide is added as foaming agent in melt zone, and carbon dioxide intake is the 3% of compound resin quality to be foamed, is melted
Melt section temperature as 165 DEG C, 155 DEG C of head blowing temperature, obtain the thick polypropylene foams of 1cm.
After testing, polypropylene foam density is 63kg/m3, uniform pore diameter inside and outside foam, no internal and hole, melting collapses
Fall into phenomenon.
Embodiment 2
By polyethylene and montmorillonite in mass ratio 95:The 5 melting mixing granulations in banbury, are made compound resin to be foamed
Particle, then it is fabricated to 10cm × 15cm × 15cm compound resin module to be foamed through injection；Then by compound resin to be foamed
Module is immersed in the water of moulded from foam mould, and foaming kettle is warming up to 130 DEG C, and being filled with carbon dioxide increases to pressure in kettle
10MPa, pressurize balance 10h, the compound resin module to be foamed in moulded from foam kettle complete water suction, and water absorption is to be foamed compound
The 10% of resin module quality, the absorption of foaming agent carbon dioxide reach balance, then open kettle pressure release, compound tree to be foamed rapidly
Fat module is expanded foamed, obtains thickness 30cm polyethylene foam material.
After testing, polyethylene foam material density is 35kg/m3, uniform pore diameter inside and outside foam, no internal and hole, melting collapses
Fall into phenomenon.
Embodiment 3
Polyvinyl chloride, plasticizer DOP, stabilizer organotin and cetyl trimethylammonium bromide in mass ratio 96:2:1:2
Melting mixing is granulated in double screw extruder, and composite resin particle to be foamed is made；Composite resin particle to be foamed is added
Into extrusion foaming equipment, the pressure-air and water as foaming agent are injected to extruder, air intake is to be foamed compound
The 3% of resin particle quality, water addition are the 10% of composite resin particle to be foamed, and melt zone temperature is 180 DEG C, head hair
It is 160 DEG C to steep temperature, obtains the thick polyvinyl chloride foam materials of 1cm.
After testing, polyvinyl chloride foam material density is 85kg/m3, uniform pore diameter inside and outside foam, no internal and hole, melting
Collapse phenomenon.
Embodiment 4
By polystyrene, sodium chloride and nucleator calcium carbonate in mass ratio 99.3:0.2:0.5 melts in double screw extruder
Melt mixing granulation, composite resin particle to be foamed is made；Composite resin particle to be foamed is fitted into autoclave, addition is enough to soak
Do not have the water of composite resin particle to be foamed, and be stirred continuously, autoclave temp is increased to 80 DEG C, and being passed through nitrogen makes pressure liter in kettle
Height arrives 5MPa, pressurize 24h, then reduces temperature to 30 DEG C, opens relief valve rapidly, through centrifugal dehydration, obtain treating for pre- water suction
Foamable composite resin particle, after testing, water absorption are the 1% of compound resin module quality to be foamed.It is to be foamed by what is absorbed water in advance
Composite resin particle is added in injection foaming machine, and high pressure nitrogen is passed through at injection foaming machine melt zone as foaming agent, nitrogen
Involvement ratio is 2% of composite resin particle quality to be foamed after water suction, and about 150 DEG C of melting temperature, what is absorbed water in advance is to be foamed multiple
Resin particle melten gel is expelled in molding foaming mould while foamed, and then foam is obtained by being molded after mould cooling and shaping
Polystyrene injection-foamed product thick 10cm.
After testing, polystyrene foamed material density is 350kg/m3, uniform pore diameter inside and outside foam, no internal and hole, melt
Melt collapse phenomenon.
Embodiment 5
By polystyrene, polyethylene glycol and azodicarbonamide in mass ratio 90:5:5 melting mixings are simultaneously fabricated to through injection
8cm × 15cm × 15cm compound resin module to be foamed；The compound resin module to be foamed is put into closed autoclave
In, and add water logging and do not have compound resin module to be foamed, autoclave valve is closed, pressure in kettle is improved and, to 5MPa, raises in kettle
Temperature is to 130 DEG C, after absorbing 10h at this temperature and pressure, reduces temperature in the kettle to 30 DEG C, pressure release, takes out, obtain pre- water suction
Compound resin module to be foamed, after testing, water absorption be compound resin module quality to be foamed 8%.What is absorbed water in advance is pending
Bubble compound resin module is put into moulded from foam mould, is heated up to 160 DEG C, seals pressurize 5h, and then die sinking foaming, obtains thickness
22cm polystyrene foamed material.
After testing, polystyrene foamed material density is 40kg/m3, uniform pore diameter inside and outside foam, no internal and hole, melting
Collapse phenomenon.
Embodiment 6
Polypropylene and polyacrylate in mass ratio 97:The 3 melting mixing granulations in double screw extruder, are obtained to be foamed
Composite resin particle, compound resin module to be foamed is added in extrusion foaming equipment, added to extruder by azo diformazan
Acid amides and azodiisobutyronitrile in mass ratio 1:The mixed foaming agent and water of 1 mixing composition, foaming agent total amount are to be foamed compound
The 4% of resin module quality, water addition are the 10% of compound resin module quality to be foamed, and melt zone temperature is 190 DEG C, machine
Head blowing temperature is 165 DEG C, obtains the thick polypropylene foams of 1.2cm.
After testing, polypropylene foam density is 60kg/m3, uniform pore diameter inside and outside foam, no internal and hole, melting collapses
Fall into phenomenon.
Embodiment 7
By polystyrene and polyethylene glycol in mass ratio 90:The 10 melting mixing granulations in double screw extruder, then through note
Modeling is fabricated to 8cm × 15cm × 15cm compound resin module to be foamed；The compound resin module to be foamed is put into closed
Autoclave in, and add water logging and do not have a compound resin module to be foamed, close autoclave valve, improve in kettle pressure to 9MPa,
Temperature in the kettle is raised to 145 DEG C, after absorbing 13h at this temperature and pressure, temperature in the kettle is reduced to 0 DEG C, pressure release, takes out, obtain
To the compound resin module to be foamed to absorb water in advance, after testing, water absorption is the 20% of compound resin module quality to be foamed.Will be pre-
The compound resin module to be foamed foaming module of water suction is put into moulded from foam mould, is heated up to 175 DEG C, is filled with propane to pressure
For 2MPa, pressurize 2h is sealed, then die sinking foaming, obtains thickness 28cm polystyrene foamed material.
After testing, polystyrene foamed material density is 48kg/m3, uniform pore diameter inside and outside foam, no internal and hole, melting
Collapse phenomenon.
Embodiment 8
By polyethylene, polyvinyl acetate, azodiisobutyronitrile in mass ratio 92:3:5 melting mixings are simultaneously fabricated to through molding
10cm × 15cm × 15cm compound resin module to be foamed；Then compound resin module to be foamed is immersed in moulded from foam mould
In the water of tool, foaming kettle is warming up to 100 DEG C, keeps pressure 10MPa, pressurize balance 10h, to be foamed compound in moulded from foam kettle
Resin module completes water suction, and water absorption is the 5% of compound resin module quality to be foamed, then opens kettle pressure release rapidly, to be foamed
Compound resin module is expanded foamed, obtains thickness 22cm polyethylene foam material.
After testing, polyethylene foam material density is 60kg/m3, uniform pore diameter inside and outside foam, no internal and hole, melting collapses
Fall into phenomenon.
Embodiment 9
By polyether-ether-ketone and montmorillonite in mass ratio 95:The 5 melting mixing granulations in double screw extruder, are obtained to be foamed
Composite resin particle, the composite resin particle to be foamed is put into closed autoclave, and add water logging do not have it is to be foamed multiple
Resin particle, close autoclave valve, improve in kettle pressure to 20MPa, rise temperature in the kettle to 350 DEG C, in the temperature and
After absorbing 0.5h under pressure, temperature in the kettle is reduced to 0 DEG C, pressure release, takes out, obtains the composite resin particle to be foamed of pre- water suction,
After testing, water absorption is the 10% of compound resin module quality to be foamed.The composite resin particle to be foamed to absorb water in advance is added
In injection foaming machine, high-pressure carbon dioxide is passed through at injection foaming machine melt zone and incorporates ratio as foaming agent, carbon dioxide
For 3% of composite resin particle quality to be foamed after water suction, about 400 DEG C of melting temperature, the compound resin to be foamed to absorb water in advance
Grain melten gel is expelled in molding foaming mould while foamed, and then foam obtains 10cm thickness by being molded after mould cooling and shaping
Polyether-ether-ketone injected foam material.
After testing, polyether-ether-ketone foam material density is 330kg/m3, uniform pore diameter inside and outside foam, no internal and hole, melt
Melt collapse phenomenon.
Comparative example 1
Acrylic resin is added in extrusion foaming equipment, carbon dioxide is added as foaming agent, dioxy in melt zone
Change 3% that carbon intake is acrylic resin quality, melt zone temperature is 165 DEG C, 155 DEG C of head blowing temperature, polypropylene tree
After fat is expanded foamed at the head, foam occur it is obvious shrink collapse phenomenon, cast aside the discovery of foam section, foam core abscess
Melting is merged into cavity, cannot get good foaming product.
Comparative example 2
Polyvinyl resin is made to 8cm × 10cm × 10cm module, is put into the water of moulded from foam mould, foam kettle liter
For temperature to 170 DEG C, being filled with carbon dioxide makes pressure in kettle increase to 10MPa, pressurize balance 24h, the absorption of foaming agent carbon dioxide
Reach balance, then rapid pressure releasing die sinking, obtain thickness 16cm polyethylene foam material, density 120kg/m3, foam breaks
Face can see, and simultaneously hole and collapse phenomenon are serious for the melting of core abscess.
Comparative example 3
By polyvinyl chloride and azodicarbonamide according to mass ratio 97:3 are added in injection foaming agent, and injection foaming machine melts
170 DEG C of glue temperature, melten gel is expelled in molding foaming mould while foamed, and foam is obtained by being molded after mould cooling and shaping
Polyvinyl chloride injected foam material thick 10cm.Polyvinyl chloride foam material density is 300kg/m3, foam inside discoloration is serious,
There is melting and hole phenomenon.
Illustrated by above-described embodiment 1-9 and comparative example 1-3, the method for polymer foams of the invention, made with water
For internal coolant, during solving polymer foaming, foam inside is difficult to the inside and outside foam caused by cooling sizing in time
Aperture difference is big, internal foam discoloration, inner cell and hole is serious, the problem of inner foam layer collapses, the foamed material matter of preparation
Measure more stable, thicker foamed material can be produced.
Claims (10)
1. the preparation method of polymer foams, it is characterised in that
(1) before foaming is processed, resin to be foamed and water imbibition additive melting mixing is granulated, obtain compound tree to be foamed
Fat；
Or, before foaming is processed, be first granulated resin to be foamed and water imbibition additive melting mixing, it is subsequently processed into molding hair
Module is steeped, obtains compound resin to be foamed；
Or, before foaming is processed, first by resin to be foamed, water imbibition additive and CBA melting mixing and it is processed into mould
Foam module, obtain compound resin to be foamed；
(2) compound resin to be foamed first carries out water suction processing before foaming is processed, then foams, and obtains polymer foams,
Or the compound resin to be foamed carries out water suction processing while foaming and processing, and obtains polymer foams；
In step (2), if compound resin to be foamed does not contain CBA, it need to be foamed using foaming agent, foaming agent is
Physical blowing agent or CBA；
The resin to be foamed does not chemically react below blowing temperature, with water, and can use extrusion foaming, molding hair
One or more methods prepare foamed material in bubble, injection foaming, and resin to be foamed is fluoropolymer resin and/or composite；
Water imbibition additive is to have spongy material, and in compound resin to be foamed, the mass fraction of water imbibition additive is
0.2-10%；
The quality for the water that compound resin to be foamed absorbs is the 0.5-20% of compound resin gross mass to be foamed after water suction.
2. the preparation method of polymer foams according to claim 1, it is characterised in that the process of step (2) is such as
Under：
(21) compound resin to be foamed is put into closed container, and adds water logging and do not have compound resin to be foamed, improved and hold
To 0.5MPa-10MPa, temperature after keeping temperature and pressure decentralization to set to 0 .5-24h, is reduced and held to 80-350 DEG C pressure in device
Temperature pressure release, is taken out to 30 DEG C, obtains the compound resin to be foamed of pre- water suction in device；
(22) if compound resin to be foamed is graininess, the compound resin and foaming agent to be foamed that absorb water in advance are added to extrusion hair
Melting mixing in equipment or injection foaming equipment is steeped, obtained melt is in extrusion foaming machine die orifice or injection foaming machine mold cavity
Interior foaming, obtains polymer foams；
If compound resin to be foamed is module shape and is free of CBA, the compound resin to be foamed to absorb water in advance is put into molding
In foaming mould, and physical blowing agent is added into mould, temperature-pressure, treat that physical blowing agent is immersed in compound resin to be foamed
In module, die sinking foaming, polymer foams are obtained；
If compound resin to be foamed is module shape and contains CBA, the compound resin to be foamed to absorb water in advance is put into molding hair
Steep in mould, temperature-pressure, die sinking foaming, obtain polymer foams.
3. the preparation method of polymer foams according to claim 1, it is characterised in that the process of step (2) is such as
Under：
If compound resin to be foamed is graininess, compound resin to be foamed, foaming agent and water are added to extrusion foaming or injection
Melting mixing in foaming machine, the quality for adding water is compound resin to be foamed and the 0.5-20% of water gross mass, then by band
There is the compound resin melt to be foamed of water and foaming agent to be foamed into extrusion foaming machine die orifice or injection foaming machine mold cavity
Type, obtain polymer foams；
The foaming agent is physical blowing agent or CBA；
If compound resin to be foamed is module shape and is free of CBA, compound resin to be foamed is put into moulded from foam mould
In, and water is added, compound resin to be foamed is completely submerged in water, add physical blowing agent into mould, temperature-pressure,
In equilibrium process, foaming agent and water are immersed in compound resin module to be foamed, obtain the compound resin mould to be foamed containing water
Block, die sinking foaming, obtains polymer foams；
If compound resin to be foamed is module shape and contains CBA, compound resin to be foamed is put into moulded from foam mould
In, and water is added, compound resin to be foamed is completely submerged in water, temperature-pressure, in equilibrium process, water is immersed in pending
Steep in compound resin module, obtain the compound resin module to be foamed containing water, die sinking foaming, obtain polymer foams.
4. the preparation method of the polymer foams according to claim 1-3 any one, it is characterised in that described to treat
Foamex is polypropylene, polyethylene, polystyrene, polyvinyl chloride, polyolefin copolymer, polystyrenic copolymer, (first
Base) esters of acrylic acid homopolymer, (methyl) esters of acrylic acid homopolymerization composition copolymer, polyformaldehyde, polyvinyl alcohol, polyaniline, polyethers
One or more in ether ketone.
5. the preparation method of the polymer foams according to claim 1-3 any one, it is characterised in that described to treat
Foam in compound resin, the mass fraction of water imbibition additive is 0.2-5%.
6. the preparation method of the polymer foams according to claim 1-3 any one, it is characterised in that described
Water imbibition additive be hydrophilic macromolecule, hydrophilic organics hydrophilicity, water absorbing inorganic thing powder, one kind in solvable inorganic salts or
It is a variety of.
7. the preparation method of polymer foams according to claim 6, it is characterised in that the hydrophilic macromolecule
For polyethylene glycol, ethylene-vinyl acetate copolymer, polypropylene glycol, polyvinyl acetate, polyacrylamide, polyacrylic acid, polypropylene
Acid esters, polyacrylate, starch, cellulose, polypropylene-polyethyleneglycol-graft copolymer, polypropylene-polyethylene glycol block copolymerization
Thing, polyethylene-polyethylene alcohol graft copolymer, polyethylene-polyethylene alcohol block copolymer, the grafting of polystyrene-poly ethylene glycol
Copolymer, polystyrene-poly ethylene glycol block copolymer, polypropylene-acrylic copolymer, polypropylene-polyacrylate are common
One or more in polymers, polypropylene-polyacrylic acid salt copolymer；
The hydrophilic organics hydrophilicity is ethylene glycol, propane diols, glycerine, pentaerythrite, stearic acid, stearic acid sodium salt, potassium stearate
Salt, stearic acid calcium salt, stearic acid zinc salt, palmitic acid, palmitic acid sodium salt, palmitin acid potassium salt, palmitin acid calcium salt, palmitic acid zinc salt,
Adipic acid, adipic acid sodium salt, adipic acid sylvite, adipic acid calcium salt, adipic acid zinc salt, suberic acid, suberic acid sodium salt, suberic acid potassium
Salt, suberic acid calcium salt, suberic acid zinc salt, decanedioic acid, decanedioic acid sodium salt, decanedioic acid calcium salt, decanedioic acid zinc salt, hexamethylene diamine, pungent two
Amine, oleamide, erucyl amide, cetyl trimethylammonium bromide, alkylpolyoxyethylene, myristyl polyoxyethylene
Ether, ceteth, Steareth, APES, tripalmitin, stearic acid
Glyceride, department's Pan's series of surfactants, TWEEN Series surfactant, bromide sixteen alkyls pyridine, bromododecane base pyrrole
Pyridine, lauryl sodium sulfate, neopelex, hexadecanyl phosphate, one kind in octadecyl phosphate or more
Kind；
The water absorbing inorganic thing powder be expanded perlite, expanded vermiculite, sepiolite, montmorillonite, diatomite, attapulgite,
One or more in bentonite, sepiolite, zeolite, molecular sieve；
The solvable inorganic salts are the borate of sodium, the carbonate of sodium, the nitrate of sodium, the phosphate of sodium, sulfate, the sodium of sodium
Chloride salt, the bromide salt of sodium, the borate of potassium, the carbonate of potassium, the nitrate of potassium, the phosphate of potassium, the sulfuric acid of potassium
Salt, the chloride salt of potassium, the bromide salt of potassium, the borate of magnesium, the carbonate of magnesium, the nitrate of magnesium, the phosphate of magnesium, magnesium
Sulfate, the chloride salt of magnesium, the bromide salt of magnesium, the borate of calcium, the carbonate of calcium, the nitrate of calcium, calcium phosphate,
The sulfate of calcium, the chloride salt of calcium, the bromide salt of calcium, the borate of aluminium, the carbonate of aluminium, the nitrate of aluminium, the phosphorus of aluminium
Hydrochlorate, the sulfate of aluminium, the chloride salt of aluminium, the bromide salt of aluminium, the borate of iron, the carbonate of iron, the nitrate of iron, iron
Phosphate, the sulfate of iron, the chloride salt of iron, the bromide salt of iron, ferrous borate, ferrous carbonate, ferrous iron
Nitrate, ferrous phosphate, ferrous sulfate, ferrous chloride salt, ferrous bromide salt, copper borate,
The carbonate of copper, the nitrate of copper, the phosphate of copper, the sulfate of copper, the chloride salt of copper, the bromide salt of copper, the boron of zinc
Hydrochlorate, the carbonate of zinc, the nitrate of zinc, the phosphate of zinc, the sulfate of zinc, the chloride salt of zinc, zinc bromide salt in
One or more.
8. the preparation method of the polymer foams according to claim 1-3 any one, it is characterised in that describedization
Foaming agent is sodium acid carbonate, ammonium carbonate, N, N- dinitrosopentamethlyene tetramines, N, and the Asia of N- dimethyl-N, N- bis- is to benzene two
Acid amides, azodicarbonamide, azodiisobutyronitrile, azoformic acid isopropyl ester, diethyl azodiformate, two azo amino
Benzene, Barium azodicarboxylate, 4,4 ,-disulfonyl hydrazide diphenyl ether, to benzene sulfonyl hydrazide, 3,3- disulfonyl hydrazides diphenyl sulphone (DPS), 4,4 ,-hexichol two
One or more in sulfohydrazide, benzen 1,3 disulphonyl hydrazide, 1,4- benzene disulfohydrazides.
9. the preparation method of the polymer foams according to claim 1-3 any one, it is characterised in that the thing
Haircut infusion is the one or more in carbon dioxide, nitrogen, air, argon gas, methane, ethane, propane, butane, pentane.
10. the preparation method of polymer foams according to claim 1, it is characterised in that in step 1 and/or step
During rapid two melting mixing, the agent of addition bubble nucleating, antioxidant, antistatic additive, antiseptic, plasticizer, lubricant, blast
One or more in agent, conductive auxiliary agent, crystal controlling agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710923932.7A CN107857891A (en) | 2017-09-30 | 2017-09-30 | The preparation method of polymer foams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710923932.7A CN107857891A (en) | 2017-09-30 | 2017-09-30 | The preparation method of polymer foams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107857891A true CN107857891A (en) | 2018-03-30 |
Family
ID=61699657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710923932.7A Pending CN107857891A (en) | 2017-09-30 | 2017-09-30 | The preparation method of polymer foams |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107857891A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108912568A (en) * | 2018-06-07 | 2018-11-30 | 广东聚石化学股份有限公司 | A kind of polyvinylalcohol microsphere expanded particle and preparation method thereof |
| CN109233155A (en) * | 2018-10-18 | 2019-01-18 | 合肥慧林建材有限公司 | A kind of heat-insulating fireproof material and preparation method thereof |
| CN109776961A (en) * | 2019-01-22 | 2019-05-21 | 中国科学院长春应用化学研究所 | A kind of non-polar polymer negative poisson's ratio foamed material and preparation method thereof |
| CN110128759A (en) * | 2019-05-27 | 2019-08-16 | 青岛科技大学 | A kind of polystyrol foam material and preparation method thereof that flexibility is hydrophilic |
| CN110527129A (en) * | 2019-10-18 | 2019-12-03 | 吉林大学 | A kind of polyether-ether-ketone perforated foams and preparation method thereof |
| CN110876817A (en) * | 2019-08-22 | 2020-03-13 | 浙江师范大学 | Porous PEEK (polyetheretherketone) bionic bone repair material, PEEK bionic bone part with multilayer structure and preparation method thereof |
| CN111019184A (en) * | 2019-12-25 | 2020-04-17 | 中国科学院苏州纳米技术与纳米仿生研究所南昌研究院 | High-content easily-dispersible foaming master batch and preparation method thereof |
| CN114377188A (en) * | 2022-01-14 | 2022-04-22 | 宋金华 | Super-absorbent bio-based foam material and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0632963A (en) * | 1992-07-17 | 1994-02-08 | Sekisui Chem Co Ltd | Water-crosslinkable resin composition and crosslinked foam made by using the same |
| JP3112396B2 (en) * | 1995-06-26 | 2000-11-27 | 広島化成株式会社 | Method for producing a foamed extrudate of a thermoplastic elastomer composition |
| CN103275407A (en) * | 2009-06-26 | 2013-09-04 | 欧文斯科宁知识产权资产有限公司 | Porous carbon-containing compounds as water carriers and cell size controlling agents for polymeric foams |
| CN105008443A (en) * | 2013-03-08 | 2015-10-28 | 株式会社钟化 | Method for manufacturing foamed polypropylene-resin particles |
-
2017
- 2017-09-30 CN CN201710923932.7A patent/CN107857891A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0632963A (en) * | 1992-07-17 | 1994-02-08 | Sekisui Chem Co Ltd | Water-crosslinkable resin composition and crosslinked foam made by using the same |
| JP3112396B2 (en) * | 1995-06-26 | 2000-11-27 | 広島化成株式会社 | Method for producing a foamed extrudate of a thermoplastic elastomer composition |
| CN103275407A (en) * | 2009-06-26 | 2013-09-04 | 欧文斯科宁知识产权资产有限公司 | Porous carbon-containing compounds as water carriers and cell size controlling agents for polymeric foams |
| CN105008443A (en) * | 2013-03-08 | 2015-10-28 | 株式会社钟化 | Method for manufacturing foamed polypropylene-resin particles |
Non-Patent Citations (1)
| Title |
|---|
| SHU-KAI YEH: "Introducing Water as a Coblowing Agent in the Carbon Dioxide Extrusion Foaming Process for Polystyrene Thermal Insulation Foams", 《POLYMER ENGINEERING AND SCIENCE》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108912568A (en) * | 2018-06-07 | 2018-11-30 | 广东聚石化学股份有限公司 | A kind of polyvinylalcohol microsphere expanded particle and preparation method thereof |
| CN109233155A (en) * | 2018-10-18 | 2019-01-18 | 合肥慧林建材有限公司 | A kind of heat-insulating fireproof material and preparation method thereof |
| CN109776961A (en) * | 2019-01-22 | 2019-05-21 | 中国科学院长春应用化学研究所 | A kind of non-polar polymer negative poisson's ratio foamed material and preparation method thereof |
| CN110128759A (en) * | 2019-05-27 | 2019-08-16 | 青岛科技大学 | A kind of polystyrol foam material and preparation method thereof that flexibility is hydrophilic |
| CN110876817A (en) * | 2019-08-22 | 2020-03-13 | 浙江师范大学 | Porous PEEK (polyetheretherketone) bionic bone repair material, PEEK bionic bone part with multilayer structure and preparation method thereof |
| CN110876817B (en) * | 2019-08-22 | 2022-03-04 | 浙江师范大学 | Porous PEEK (polyetheretherketone) bionic bone repair material, PEEK bionic bone part with multilayer structure and preparation method thereof |
| CN110527129A (en) * | 2019-10-18 | 2019-12-03 | 吉林大学 | A kind of polyether-ether-ketone perforated foams and preparation method thereof |
| CN110527129B (en) * | 2019-10-18 | 2021-06-04 | 吉林大学 | Polyether-ether-ketone porous foam material and preparation method thereof |
| CN111019184A (en) * | 2019-12-25 | 2020-04-17 | 中国科学院苏州纳米技术与纳米仿生研究所南昌研究院 | High-content easily-dispersible foaming master batch and preparation method thereof |
| CN114377188A (en) * | 2022-01-14 | 2022-04-22 | 宋金华 | Super-absorbent bio-based foam material and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107857891A (en) | The preparation method of polymer foams | |
| US4818604A (en) | Composite board and method | |
| US5622756A (en) | Expansion-molded article of polyolefin resin having open voids | |
| CN107283711B (en) | A kind of thermoplastic polymer expanded bead formed body and preparation method thereof | |
| US3211605A (en) | Foamed product and process | |
| CN107627527B (en) | The preparation method of copolymerized polymer foam with hydrophilic units | |
| CN106883490A (en) | Fretting map master batch and preparation method thereof and refrigerator foaming plate | |
| RU2000118231A (en) | LOW DENSITY REINFORCED FOAMED PLASTICS | |
| CN108503879B (en) | Thermoplastic polyurethane foaming bead and preparation method thereof | |
| CN107674234B (en) | Process for producing polypropylene resin foamed particles | |
| JP2022539929A (en) | 3D printing system for preparing three-dimensional objects | |
| US3531553A (en) | Method of injection molding olefin plastic articles with a foamed interior and unfoamed surface | |
| CN106541508B (en) | A kind of method that endothermic blowing agent combination supercritical nitrogen prepares expanded bead | |
| JPH07137063A (en) | Molded body of foamed polymer chips having gap | |
| CN105694206B (en) | A kind of method for making foaming agent production long glass fiber-reinforced polypropylene foaming injection product with water | |
| JPH0239367B2 (en) | ||
| US6723264B1 (en) | Method of making biodegradable packaging material | |
| US6432512B1 (en) | Foam plank laminate | |
| WO1988001934A1 (en) | A method for producing cellular pvc plastic | |
| CN109851838A (en) | A kind of aero seat frostproof froth n technique | |
| CN105382991B (en) | A kind of Water blown injection moulding method of the super extended products of PP/LDPE | |
| JP2603859B2 (en) | Method for producing injection molded foam | |
| KR100764900B1 (en) | A method for preparing a microcellular foam by using a die having improved cooling property | |
| EP0537346B1 (en) | Method of producing a shaped resin article | |
| AT258391B (en) | Electrical switchgear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180330 |
|
| WD01 | Invention patent application deemed withdrawn after publication |