CN106832672A - PVC foam core materials and its production technology - Google Patents
PVC foam core materials and its production technology Download PDFInfo
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- CN106832672A CN106832672A CN201710092234.7A CN201710092234A CN106832672A CN 106832672 A CN106832672 A CN 106832672A CN 201710092234 A CN201710092234 A CN 201710092234A CN 106832672 A CN106832672 A CN 106832672A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
- B29C44/3423—Heating or cooling by using a heated or cooled preformed part, e.g. in the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3442—Mixing, kneading or conveying the foamable material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/60—Measuring, controlling or regulating
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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
- C08J9/06—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 chemical blowing agent
- C08J9/10—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 chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
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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
- C08J9/06—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 chemical blowing agent
- C08J9/10—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 chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- 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
- C08J2203/18—Binary blends of expanding agents
-
- 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
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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
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives 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
- C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
- C08J2479/02—Polyamines
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
PVC foam core materials and its production technology, it is related to foamed material field, the raw material of the PVC foam core materials includes 30% 80% polyvinyl chloride by mass percentage, 10% 50% isocyanates, 2% 10% foaming agents, 0.5% 4% epoxy components, 2% 20% anhydride components and 1% 3% fillers, when producing the PVC foam core materials, first the raw material in addition to PVC is premixed, adding PVC lead the mode of mixed this two steps batch mixing, it is molded using grading temperature control method again, realize that embryo is uniformly molded, then use and heat up stage by stage, the mode of insulation is expanded, finally solidified.The manufacturing technique method is simple, high yield rate, is adapted to large-scale production；Obtained PVC foam core materials, density is low, intensity is high, can be used for the industrial fields such as wind electricity blade, and high yield rate, good product quality.
Description
Technical field
The present invention relates to a kind of foamed material field, and more particularly to a kind of PVC foam core materials and its production technology.
Background technology
Foam interlayer structure compound material is that one kind uses polymer matrix composites as covering, using foamed plastics conduct
The sandwich form of core, have that intensity is high, lightweight, rigidity is big due to it, corrosion-resistant, electric insulation, saturating microwave etc. it is excellent
Characteristic, and be increasingly widely used in the industries such as wind-power electricity generation, track traffic, energy saving building, Aero-Space, greatly meet
The development need of these industries.Being currently used as the foam core material of sandwich mainly has polyvinyl chloride (PVC), polystyrene
(PS), the foam such as polyurethane (PUR), PEI (PEI).Wherein crosslinked PVC foam, because its stable performance, quality are equal
Even, sound good mechanical properties, resistant to many chemicals attack, can be applied to bearing requirements position high, and price is suitable
In, therefore be widely applied in every field.
But, due to the limitation of current foam core material performance, some special dimensions still cannot be applied to.Such as, wind
The industrial fields such as electric blade still make blade using traditional sheet material, timber etc., and obtained vane stability is poor, intolerant to burn into
Weight is big, high cost.Accordingly, it would be desirable to using cheap and easy to get, chemical stability is good, the synthesis of corrosion resistant polyvinyl chloride resin is a kind of low close
Degree, high intensity and can be used for the structural foam of the industrial fields such as wind electricity blade, to replace the system such as traditional sheet material, timber
Make wind electricity blade, so as to mitigate weight, reduces cost, improve use value.At present, have the ability to realize PVC foam core material scales
The producer of production is few, domestic Changzhou Tiansheng New Material Co., Ltd, and the Struell series foam-baseds of its production originally can
Meet the requirement of wind electricity blade, but the foam of production is still suffered from yield rate is low, product quality has much room for improvement defect.
The content of the invention
It is an object of the invention to provide a kind of PVC foam core materials, density is low, intensity is high, can be used for the product such as wind electricity blade
Industry field, and high yield rate, good product quality.
Another object of the present invention is to provide a kind of production technology of PVC foam core materials, method is simple, high yield rate,
It is adapted to large-scale production.
The present invention is solved its technical problem and is realized using following technical scheme.
The present invention proposes a kind of PVC foam core materials, and it is made up of following raw material, and by mass percentage, raw material includes：
30%-80% polyvinyl chloride；10%-50% isocyanates；2%-10% foaming agents；0.5%-4% epoxy components；
2%-20% anhydride components；And 1%-3% fillers.
Further, in present pre-ferred embodiments, isocyanates includes that 1,5- naphthalene diisocyanates, polymethylene are more
In the different diisocyanate of phenyl, toluene di-isocyanate(TDI), hexamethylene diisocyanate, Carbodiimide-Modified isocyanates
It is at least one.
Further, in present pre-ferred embodiments, foaming agent includes that mass ratio is 0.1-0.8:1 formyl of azo two
Amine and azodiisobutyronitrile.
Further, in present pre-ferred embodiments, epoxy component includes epoxidized soybean oil, epoxidized triglyceride, ring
At least one in oxidative ethane, epoxy resin, epoxy animal oil.
Further, in present pre-ferred embodiments, acid anhydrides include HHPA, methyl hexahydrophthalic anhydride, maleic anhydride,
At least one in succinic anhydride, pyromellitic acid anhydride or cis- hexamethylene -1,2- dicarboxylic anhydrides.
Further, in present pre-ferred embodiments, filler is organic filler or inorganic filler, and organic filler includes shell
One kind or at least two mixture in glycan, amino modified polycaprolactone, chitin, alkaloid.
Further, in present pre-ferred embodiments, raw material also includes amido component, and the addition of amido component accounts for it
Less than the 1% of his raw material total amount, amido component includes at least one in polyamide-amide, PPI, polyethyleneimine.
A kind of production technology of PVC foam core materials, it is comprised the following steps：
Raw material in addition to polyvinyl chloride is poured into circulation in mixer and is stirred mixing, homogeneous, obtain premix；
Polyvinyl chloride stirring mixing is added in premix, then continues to stir mixing, total stirring under conditions of vacuum≤- 0.09MPa
Incorporation time is 30-90min, obtains pasty mixture；
Pasty mixture is injected in mould, is molded under conditions of pressure is 5-35Mpa, be first warming up to 159-
197 DEG C, insulation 41-72min, are cooled to room temperature, insulation 14-31min, obtain half foaming embryo block；
The embryo block that will partly foam is placed in water bath or vaporium and is expanded, and progressively heats up stage by stage, after heating up every time
Insulation at least 35-120min, until being warming up to 72-97 DEG C, obtains semi-finished product foam；
Semi-finished product foam is placed in 33-89 DEG C of water bath or vaporium and is solidified.
Further, in present pre-ferred embodiments, the stirring mixing temperature to adding the raw material before polyvinyl chloride
Not higher than 30 DEG C；Stirring mixing temperature to adding the raw material after polyvinyl chloride is not higher than 35 DEG C.
Further, in present pre-ferred embodiments, hardening time is 3-10 days.
The PVC foam core materials of the embodiment of the present invention and its beneficial effect of production technology are：The PVC bubbles of the embodiment of the present invention
The raw material of foam core includes 30%-80% polyvinyl chloride, 10%-50% isocyanates, 2%-10% hairs by mass percentage
Infusion, 0.5%-4% epoxy components, 2%-20% anhydride components and 1%-3% fillers, when producing the PVC foam core materials, first will
Raw material in addition to polyvinyl chloride is premixed, and adds polyvinyl chloride lead the mode of mixed this two steps batch mixing, then use point
Stage method of temperature-control by is molded, and realizes that embryo is uniformly molded, and is then expanded by the way of heating up stage by stage, being incubated, most
After solidified.The manufacturing technique method is simple, high yield rate, is adapted to large-scale production；Obtained PVC foam core materials, density
Low, intensity is high, can be used for the industrial fields such as wind electricity blade, and high yield rate, good product quality.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below will be in the embodiment of the present invention
Technical scheme be clearly and completely described.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, are the conventional product that can be obtained by commercially available purchase
Product.
The PVC foam core materials and its production technology to the embodiment of the present invention are specifically described below.
The embodiment of the present invention provides a kind of PVC foam core materials, and it is made up of following raw material, by mass percentage, raw material
Including：30%-80% polyvinylchlorides；10%-50% isocyanates；2%-10% foaming agents；0.5%-4% epoxy components；
2%-20% anhydride components；And 1%-3% fillers.
Wherein, isocyanates includes that 1,5- naphthalene diisocyanates, the different diisocyanate of polymethylene polyphenyl, toluene two are different
At least one in cyanate, hexamethylene diisocyanate, Carbodiimide-Modified isocyanates.
Foaming agent includes that mass ratio is 0.1-0.8:1 azodicarbonamide AC and azodiisobutyronitrile AIBN.
Epoxy component is included in epoxidized soybean oil, epoxidized triglyceride, oxirane, epoxy resin, epoxy animal oil
It is at least one.
Acid anhydrides includes HHPA, methyl hexahydrophthalic anhydride, maleic anhydride, succinic anhydride, pyromellitic acid anhydride or cis- ring
At least one in hexane -1,2- dicarboxylic anhydrides.
The optional scope of filler is wider, organic filler or inorganic filler, and organic filler includes shitosan, amino modified
One kind or at least two mixture in polycaprolactone, chitin, alkaloid, are renewable resource or reusable edible money
Source.
Raw material also includes amido component, and the addition of amido component accounts for less than the 1% of other raw material total amounts, amido component bag
Include at least one PEI in polyamide-amide PAMAM, PPI PPI, polyethyleneimine.Amido component is with the big of amido
Molecular components, it can be cross-linked to form network structure, improve the toughness and rigidity of PVC foam core material products with other raw material reactions,
Meet the demand of the industrial fields such as wind electricity blade.
The embodiment of the present invention also provides a kind of production technology of PVC foam core materials, and it is comprised the following steps：
S1 gets the raw materials ready：
By mass percentage, raw material is prepared：30%-80% polyvinylchlorides；10%-50% isocyanates；2%-
10% foaming agent；0.5%-4% epoxy components；2%-20% anhydride components；And 1%-3% fillers.
S2 hybrid techniques：
(1) premix：Raw material in addition to polyvinyl chloride is poured into circulation in mixer and is stirred mixing, homogeneous, stirred
Mixing temperature is not higher than 30 DEG C, obtains premix.
(2) it is main mixed：Polyvinyl chloride stirring mixing is added in premix, then under conditions of vacuum≤- 0.09MPa,
Continue to stir mixing, total stirring incorporation time is 30-90min, and stirring mixing temperature is not higher than 35 DEG C, obtains uniform pasty state and mixes
Compound.
The present embodiment is mixed using planetary stirring machine, realizes the control to mixing speed, time, vacuum etc.,
Homogeneous is carried out using Homogenizing pump, the uniform mixing of material is realized.
In due to the present embodiment, the gross mass of the raw material in addition to PVC accounts for smaller, wherein also including some quality accountings
Very small component, such as foaming agent, epoxy component, anhydride component and filler, if directly by the small small powder of quality accounting with
Major ingredient PVC mixes, it is difficult to it is well mixed, easily there is reunion caking phenomenon, and the uniformity of raw material directly affects product PVC foams
The quality of core.Therefore, the present embodiment is first premixed the raw material in addition to PVC, specifically by the way of two step batch mixings
It is that mode is premixed using this circulation of mixing → homogeneous → mixing → homogeneous, can be by the small powder in addition to PVC fully, uniformly
Mixing；Adding PVC lead mixed, is specifically first mixed well mixed small powder with PVC, various small powders is uniformly hanged
In floating on whole material system, it is ensured that by after follow-up static treatment, obtained finished product rate is high, and also will be in vacuum bar
Mixing deaeration is carried out under part, the purpose for eliminating bubble in material system is reached, it is to avoid obtained interiors of products abscess is uneven.
S3 mould pressing process：
By in the good mould of pasty mixture injection sealing, it is molded under conditions of pressure is 5-35Mpa, first
159-197 DEG C, insulation 41-72min are warming up to, room temperature, insulation 14-31min is cooled to, half foaming embryo block is obtained.
The present embodiment is molded using multidaylight press, specifically using 1500T multidaylight press systems, realizes pressing molding
The precise control of power, temperature, time etc., the embryo for realizing product using mould is molded.And before molding, mixed material is noted
Enter mould, add a cover one layer of PET film, be re-fed into being molded in multidaylight press, it is ensured that the uniformity of molding stress, after molding
Embryo's planarization is good.
The present embodiment uses grading temperature control method in molding, and first slow intensification, again insulation, slow cooling, realize embryo
All parts (including epidermis and inwall) uniformly be molded, if temperature is too high, be easily caused the degraded of PVC, if temperature is too low, easily lead
Cause obtained PVC foam core material interiors of products abscesses uneven.
S4 expansion process：
The embryo block that will partly foam is placed in water bath or vaporium and is expanded, and progressively heats up stage by stage, after heating up every time
Insulation at least 35-120min, until being warming up to 72-97 DEG C, is expanded into design density, obtains semi-finished product foam.
The present embodiment uses thermostatic constant wet chamber, and automated procedures control, realizes temperature, humidity, time isoparametric essence
Really control.
Because thermal expansion is a process for dynamic change, temperature, humidity, time are key influence factors, if temperature it is low,
Time, short then expansion multiplying power was not high, and the degree of cross linking is low, if temperature is high to be easily caused PVC degradeds；Expansion ratio and effect if humidity is low
Rate is low, and the higher the better for humidity.The present embodiment makes embryo progressively swollen to inside by epidermis by the way of heating up stage by stage, being incubated
Swollen, so as to realize the purpose of all part even inflations of embryo, so, the PVC foam core materials peeling for not only obtaining is few,
And high yield rate, the proportion of goods damageds for being made subsequent product are extremely low.And, the present embodiment thermal expansion processes last mold clearing temperature not
Higher than 95 DEG C, it is to avoid the crude product quality after expansion becomes loose, abscess becomes big, influences PVC foam core material quality.
S5 curing process：
Semi-finished product foam is placed in 33-89 DEG C of water bath or vaporium and is placed 3-10 days, solidified, will be unnecessary
Cyanogen acid-base reaction, obtain the PVC foam core materials of hard.
The present embodiment realizes the precise control to temperature, humidity and time using thermostatic constant wet chamber.
For improve production efficiency, product strength, improvement properties of product are improved, it is necessary to be carried out to the crude product after expansion process
Solidify afterwards operation.If heat treatment temperature is too high in curing process, change in size, yield rate reduction are easily caused；But temperature is too low, then
Curing efficiency can be greatly reduced.
Feature of the invention and performance are described in further detail with reference to embodiments.
Embodiment 1
The embodiment of the present invention provides a kind of PVC foam core materials, and it uses following production technology to be obtained：
S101 prepares raw material：50kgPVC, 31.9kg1,5- naphthalene diisocyanate, 5.1kgAIBN, 2kgAC, 1kg asphalt mixtures modified by epoxy resin
Fat, 8kg succinic anhydrides, and 2kg shitosans.
S102 mixes：Raw material in addition to PVC is poured into planetary stirring machine and is premixed, prior to mixing under 50rpm
25min, using Homogenizing pump homogeneous 2min, mixes 20min, homogeneous 2min under 50rpm, and 10min is mixed under 35rpm,
Homogeneous 2min, temperature during premix is not higher than 30 DEG C, obtains premix.PVC is added in premix, in vacuum≤- 0.09MPa
Under conditions of, in 15min is mixed under 35rpm, temperature when main mixed is not higher than 35 DEG C, obtains pasty mixture.
S103 is molded：Pasty mixture is injected into mould, one layer of PET film is added a cover, 1500T multidaylight press systems are re-fed into
In be molded, first by room temperature to 159 DEG C in 30min, be incubated 72min, then room temperature is cooled in 30min, be incubated
31min, obtains half foaming embryo block.
S104 expands：Half foaming embryo block is expanded in constant temperature and humidity room, under conditions of saturated humidity, in 30min
Inside it is warmed up to 95 DEG C, is incubated 100min, then be warmed up to 97 DEG C, be incubated 100min, obtains semi-finished product foam.
S105 solidifies：Semi-finished product foam is solidified in constant temperature and humidity room, in 60-70 DEG C, the condition of saturated humidity
Under, place 8 days, obtain final product PVC foam core materials, yield rate is up to 82%.
Embodiment 2
The embodiment of the present invention provides a kind of PVC foam core materials, and it uses following production technology to be obtained：
S201 prepares raw material：60kgPVC, 26.2kg toluene di-isocyanate(TDI), 4kgAIBN, 2kgAC, 0.6kg epoxy soybean
Oil, 6.2kg methyl hexahydrophthalic anhydrides, and 1kg chitins.
S202 mixes：Raw material in addition to PVC is poured into planetary stirring machine and is premixed, in mixing under 60rpm
5min, using Homogenizing pump homogeneous 3min, being circulated altogether by said process is carried out 5 times, and temperature during premix is not higher than 30 DEG C, obtains pre-
Batch mixing.PVC is added in premix, under the conditions of vacuum≤- 0.09MPa, in 30min is mixed under 50rpm, temperature when mixing is led
Not higher than 35 DEG C, obtain pasty mixture.
S203 is molded：Pasty mixture material is injected into mould, one layer of PET film is added a cover, 1500T multidaylight presses system is re-fed into
It is molded in system, first by room temperature to 195 DEG C in 15min, is incubated 42min, then room temperature is cooled in 25min, is protected
Warm 15min, obtains half foaming embryo block.
S204 expands：Half foaming embryo block is expanded in constant temperature and humidity room, under conditions of saturated humidity, is divided 4 times and is risen
Temperature is incubated 60min to 90 DEG C after heating up every time, obtains semi-finished product foam.
S205 solidifies：Semi-finished product foam is solidified in constant temperature and humidity room, under conditions of 60 DEG C, saturated humidity,
Place 8 days, obtain final product PVC foam core materials, yield rate is up to 87%.
Embodiment 3
The embodiment of the present invention provides a kind of PVC foam core materials, and it uses following production technology to be obtained：
S301 prepares raw material：40kgPVC, 36.5kg Carbodiimide-Modified isocyanates, 7kgAIBN, 3kgAC, 1.5kg
Epoxidized triglyceride, 10kg pyromellitic acid anhydrides, and 2kg alkaloids, 1kg polyethyleneimines (account for remaining raw material total amount
1%).
S302 mixes：Raw material in addition to PVC is poured into planetary stirring machine and is premixed, prior to mixing under 30rpm
4min, homogeneous 5min, mix 5min, homogeneous 6min under 40rpm, and 6min, homogeneous 7min are mixed under 50rpm, premix
When temperature be not higher than 30 DEG C, obtain premix.PVC is added in premix, lead it is mixed, in mixing 30min under 50rpm,
Temperature when main mixed is not higher than 35 DEG C, obtains pasty mixture.
S303 is molded：Pasty mixture is injected into mould, one layer of PET film is added a cover, 1500T multidaylight press systems are re-fed into
In be molded, first by room temperature to 185 DEG C in 20min, be incubated 62min, then room temperature is cooled in 30min, be incubated
21min, obtains half foaming embryo block.
S304 expands：Half foaming embryo block is expanded in constant temperature and humidity room, under conditions of saturated humidity, is divided 5 times and is risen
Temperature is incubated 45min to 92 DEG C after heating up every time, obtains semi-finished product foam.
S305 solidifies：Semi-finished product foam is solidified in constant temperature and humidity room, under conditions of 70 DEG C, saturated humidity,
Place 6 days, obtain final product PVC foam core materials, yield rate is up to 87%.
Embodiment 4
The embodiment of the present invention provides a kind of PVC foam core materials, and it uses following production technology to be obtained：
S401 prepares raw material：50kgPVC, 31.9kg1,5- naphthalene diisocyanate, 5.1kgAIBN, 2kgAC, 1kg asphalt mixtures modified by epoxy resin
Fat, 8kg succinic anhydrides, and 2kg shitosans.
S402 mixes：Raw material in addition to PVC is poured into planetary stirring machine and is premixed, prior to mixing under 35rpm
57min, using Homogenizing pump homogeneous 5min, mixes 5min under 35rpm, and homogeneous 8min, temperature during premix is not higher than 30 DEG C,
Obtain premix.PVC is added in premix, lead it is mixed, prior to mixing 15min under 35rpm, then in vacuum≤- 0.09MPa
Under conditions of, in 15min is mixed under 30rpm, temperature when main mixed is not higher than 35 DEG C, obtains pasty mixture.
S403 is molded：Pasty mixture is injected into mould, one layer of PET film is added a cover, 1500T multidaylight press systems are re-fed into
In be molded, be first warming up to 170 DEG C by 20 DEG C in 20min, be incubated 60min, then 25 DEG C, insulation are cooled in 30min
20min, obtains half foaming embryo block.
S404 expands：Half foaming embryo block is expanded in constant temperature and humidity room, under conditions of saturated humidity, in 20min
Inside it is warmed up to 87 DEG C, is incubated 1.5h, then be warmed up to 90 DEG C, be incubated 1.5h, be warmed up to 92 DEG C, obtains semi-finished product foam.
S405 solidifies：Semi-finished product foam is solidified in constant temperature and humidity room, in 60-70 DEG C, the condition of saturated humidity
Under, place 6-8 days, obtain final product PVC foam core materials, yield rate is up to 90%.
Embodiment 5
The embodiment of the present invention provides a kind of PVC foam core materials, and it uses following production technology to be obtained：
S501 prepares raw material：60kgPVC, 26.2kg toluene di-isocyanate(TDI), 4kgAIBN, 2kgAC, 0.6kg epoxy soybean
Oil, 6.2kg methyl hexahydrophthalic anhydrides, and 1kg chitins.
S502 mixes：Raw material in addition to PVC is poured into planetary stirring machine and is premixed, prior to mixing under 30rpm
7min, using Homogenizing pump homogeneous 7min, mixes 7min under 30rpm, and homogeneous 10min, temperature during premix is not higher than 30 DEG C,
Obtain premix.PVC is added in premix, lead it is mixed, prior to mixing 20min under 30rpm, then in vacuum≤- 0.09MPa
Under the conditions of, in 20min is mixed under 26rpm, temperature when main mixed is not higher than 35 DEG C, obtains pasty mixture.
S503 is molded：Pasty mixture material is injected into mould, one layer of PET film is added a cover, 1500T multidaylight presses system is re-fed into
It is molded in system, is first warming up to 160 DEG C by 15 DEG C in 15min, is incubated 70min, then 30 DEG C, guarantor are cooled in 25min
Warm 15min, obtains half foaming embryo block.
S504 expands：Half foaming embryo block is expanded in constant temperature and humidity room, under conditions of saturated humidity, in 15min
Inside it is warmed up to 86 DEG C, is incubated 2h, then be warmed up to 89 DEG C, be incubated 2h, be warmed up to 92 DEG C, obtains semi-finished product foam.
S505 solidifies：Semi-finished product foam is solidified in constant temperature and humidity room, under conditions of 60 DEG C, saturated humidity,
Place 8 days, obtain final product PVC foam core materials, yield rate is up to 86%.
Embodiment 6
The embodiment of the present invention provides a kind of PVC foam core materials, and it uses following production technology to be obtained：
S601 prepares raw material：40kgPVC, 36.5kg Carbodiimide-Modified isocyanates, 7kgAIBN, 3kgAC, 1.5kg
Epoxidized triglyceride, 10kg pyromellitic acid anhydrides, and 2kg alkaloids, 1kg PPIs PPI (account for remaining raw material total amount
1%).
S602 mixes：Raw material in addition to PVC is poured into planetary stirring machine and is premixed, prior to mixing under 40rpm
3min, using Homogenizing pump homogeneous 3min, mixes 3min under 40rpm, and homogeneous 5min, temperature during premix is not higher than 30 DEG C,
Obtain premix.PVC is added in premix, lead it is mixed, prior to mixing 10min under 40rpm, then in vacuum≤- 0.09MPa
Under the conditions of, in 10min is mixed under 34rpm, temperature when main mixed is not higher than 35 DEG C, obtains pasty mixture.
S603 is molded：Pasty mixture is injected into mould, one layer of PET film is added a cover, 1500T multidaylight press systems are re-fed into
In be molded, be first warming up to 180 DEG C by 20 DEG C in 25min, be incubated 50min, then 20 DEG C, insulation are cooled in 35min
15min, obtains half foaming embryo block.
S604 expands：Half foaming embryo block is expanded in constant temperature and humidity room, under conditions of saturated humidity, in 25min
Inside it is warmed up to 88 DEG C, is incubated 1h, then be warmed up to 91 DEG C, be incubated 1h, be warmed up to 95 DEG C, obtains semi-finished product foam.
S605 solidifies：Semi-finished product foam is solidified in constant temperature and humidity room, under conditions of 70 DEG C, saturated humidity,
Place 6 days, obtain final product PVC foam core materials, yield rate is up to 88%.
Properties of product are analyzed：
First, be can be seen that by embodiment 1-6 and reached according to PVC foam core materials yield rate obtained in production technology of the present invention
More than 86%, it is adapted to large-scale production.
2nd, due to the main target of the PVC foam core materials of the embodiment of the present invention be for industrial fields such as wind electricity blades, when
, it is necessary to have raising blade stiffness when the PVC foamed materials are used for wind electricity blade core, increase stability and mitigate blade matter
The effect of amount.The mechanical property of PVC foam core materials influences whether the mechanical property of blade, while PVC foam core materials density is different,
Influence can be also produced on the Mass Distribution of blade, and then influences whether the load distribution of blade.For the PVC bubbles of wind electricity blade
The Key Performance Indicator and testing standard of foam material are as shown in the table：
The performance indications and testing standard of table 1PVC foamed materials
| Performance | Testing standard | Unit | P60 | |
| Nominal density | ISO845 | Average value | 60 | |
| Pressed density | ASTMD 1621 | MPa | Average value | 0.6 |
| Modulus of compressibility | ASTMD 1621 | MPa | Average value | 65 |
| Tensile strength | ASTMD 1623 | MPa | Average value | 1.3 |
| Stretch modulus | ASTMD 1623 | MPa | Average value | 62 |
| Shear strength | ASTMC 273 | MPa | Average value | 0.58 |
| Modulus of shearing | ASTMC 273 | MPa | Average value | 14 |
| Shear strain | ASTMC 273 | % | Average value | 10 |
Detect nominal density, the compression of the PVC foam core materials in embodiment 1-6 respectively according to the testing standard shown in upper table
Density, modulus of compressibility, tensile strength, stretch modulus, shear strength, modulus of shearing, shear strain, testing result show：According to
The nominal density of PVC foam core materials obtained in the production technology of the embodiment of the present invention, pressed density, modulus of compressibility, tensile strength,
Stretch modulus, shear strength, modulus of shearing, shear strain illustrate the PVC of the embodiment of the present invention in the critical field of P60
The properties of foamed material can meet the requirement of wind electricity blade core.
In sum, the PVC foam core material density of the embodiment of the present invention is low, intensity is high, can be used for the industries such as wind electricity blade
Field, and high yield rate, good product quality；And the production technology of the PVC foam core materials, simply, high yield rate is adapted to rule to method
Modelling is produced.
Embodiments described above is a part of embodiment of the invention, rather than whole embodiments.It is of the invention
The detailed description of embodiment is not intended to limit the scope of claimed invention, but is merely representative of selected reality of the invention
Apply example.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
Every other embodiment, belong to the scope of protection of the invention.
Claims (10)
1. a kind of PVC foam core materials, it is characterised in that it is made up of following raw material, by mass percentage, the raw material bag
Include：
2. PVC foam core materials according to claim 1, it is characterised in that the isocyanates includes the isocyanide of 1,5- naphthalenes two
The different diisocyanate of acid esters, polymethylene polyphenyl, toluene di-isocyanate(TDI), hexamethylene diisocyanate, carbodiimides
At least one in modified isocyanate.
3. PVC foam core materials according to claim 1, it is characterised in that the foaming agent includes that mass ratio is 0.1-
0.8:1 azodicarbonamide and azodiisobutyronitrile.
4. PVC foam core materials according to claim 1, it is characterised in that the epoxy component includes epoxidized soybean oil, ring
At least one in oxygen triglycerides, oxirane, epoxy resin, epoxy animal oil.
5. PVC foam core materials according to claim 1, it is characterised in that the acid anhydrides includes HHPA, methyl hexahydro
At least one in phthalic anhydride, maleic anhydride, succinic anhydride, pyromellitic acid anhydride or cis- hexamethylene -1,2- dicarboxylic anhydrides.
6. PVC foam core materials according to claim 1, it is characterised in that described filler is organic filler or inorganic filler,
The organic filler includes one kind or at least two mixing in shitosan, amino modified polycaprolactone, chitin, alkaloid
Thing.
7. PVC foam core materials according to claim 1, it is characterised in that the raw material also includes amido component, the amine
The addition of base component accounts for less than the 1% of other raw material total amounts, and the amido component includes polyamide-amide, PPI, gathers
At least one in aziridine.
8. a kind of production technology of PVC foam core materials as claimed in claim 1, it is characterised in that it is comprised the following steps：
Raw material in addition to polyvinyl chloride is poured into circulation in mixer and is stirred mixing, homogeneous, obtain premix；In premix
Polyvinyl chloride stirring mixing is added in material, then continues to stir mixing, total stirring mixing under conditions of vacuum≤- 0.09MPa
Time is 30-90min, obtains pasty mixture；
The pasty mixture is injected in mould, is molded under conditions of pressure is 5-35Mpa, be first warming up to 159-
197 DEG C, insulation 41-72min, are cooled to room temperature, insulation 14-31min, obtain half foaming embryo block；
Expanded during the half foaming embryo block is placed in into water bath or vaporium, progressively heated up stage by stage, after heating up every time
Insulation at least 35-120min, until being warming up to 72-97 DEG C, obtains semi-finished product foam；
The semi-finished product foam is placed in 33-89 DEG C of water bath or vaporium and is solidified.
9. the production technology of PVC foam core materials according to claim 8, it is characterised in that to adding the polyvinyl chloride
The stirring mixing temperature of raw material before is not higher than 30 DEG C；Stirring mixing temperature to adding the raw material after polyvinyl chloride is not high
In 35 DEG C.
10. the production technology of PVC foam core materials according to claim 8, it is characterised in that hardening time is 3-10 days.
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| CN109054234A (en) * | 2018-07-12 | 2018-12-21 | 洛阳科博思新材料科技有限公司 | Flame-proof heat-resistant polyvinyl chloride structural foam material of high specific strength and preparation method thereof |
| CN109054233A (en) * | 2018-07-12 | 2018-12-21 | 洛阳科博思新材料科技有限公司 | A kind of micropore PVC foamed material and preparation method thereof |
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| CN109762271A (en) * | 2019-01-15 | 2019-05-17 | 洛阳科博思新材料科技有限公司 | A kind of porosity closed cell PVC foams and preparation method thereof |
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| WO2022132228A1 (en) * | 2020-12-17 | 2022-06-23 | Helicoid Industries Inc. | Composite materials and structures |
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| CN109054234A (en) * | 2018-07-12 | 2018-12-21 | 洛阳科博思新材料科技有限公司 | Flame-proof heat-resistant polyvinyl chloride structural foam material of high specific strength and preparation method thereof |
| CN109054233A (en) * | 2018-07-12 | 2018-12-21 | 洛阳科博思新材料科技有限公司 | A kind of micropore PVC foamed material and preparation method thereof |
| CN109749306A (en) * | 2019-01-15 | 2019-05-14 | 洛阳科博思新材料科技有限公司 | A kind of perforated foams and preparation method thereof |
| CN109762271A (en) * | 2019-01-15 | 2019-05-17 | 洛阳科博思新材料科技有限公司 | A kind of porosity closed cell PVC foams and preparation method thereof |
| CN109762272A (en) * | 2019-01-15 | 2019-05-17 | 洛阳科博思新材料科技有限公司 | A kind of closed pore hard integral skin foam and preparation method thereof |
| CN109749306B (en) * | 2019-01-15 | 2024-02-27 | 洛阳科博思新材料科技有限公司 | Porous foam material and preparation method thereof |
| WO2022132228A1 (en) * | 2020-12-17 | 2022-06-23 | Helicoid Industries Inc. | Composite materials and structures |
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