CN108422721A - A kind of PVA composite plastics - Google Patents
A kind of PVA composite plastics Download PDFInfo
- Publication number
- CN108422721A CN108422721A CN201810222428.9A CN201810222428A CN108422721A CN 108422721 A CN108422721 A CN 108422721A CN 201810222428 A CN201810222428 A CN 201810222428A CN 108422721 A CN108422721 A CN 108422721A
- Authority
- CN
- China
- Prior art keywords
- layer
- pva
- layers
- temperature
- composite plastics
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/08—Interconnection of layers by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/21—Urea; Derivatives thereof, e.g. biuret
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
- Materials For Medical Uses (AREA)
Abstract
The invention discloses a kind of PVA composite plastics, belong to technical field of high-molecular polymer, including first layer and the second layer, first layer include layer of PVC, pet layer, POF layers, TPU layer, PE layers, PS layers, PC layers, abs layer, PU layers, PA layers, TPE layers, at least one of TPR layers, the second layer is PVA layers, and first layer and the second layer are made by coextrusion mold；The ratio of the thickness of first layer and the thickness of the second layer is 38:2‑7；The density of the second layer is 1.2 2.4g/cm3, the second layer accounts for the 20 80% of the total weight of the second layer and first layer.The present invention has the advantages that intensity is higher, flexibility is preferable, non-hazardous safely to health.
Description
Technical field
The present invention relates to technical field of high-molecular polymer, more specifically, it relates to a kind of PVA composite plastics.
Background technology
Polyvinyl alcohol (PVA) is a kind of macromolecule, and between plastics and rubber, polyvinyl alcohol has preferably strong performance
Connecing property, epithelium flexibility, flatness, oil resistivity, solvent resistant body protectiveness, gas barrier performance etc., and polyvinyl alcohol health is nontoxic,
Biodegradable under certain condition, polyvinyl alcohol is in weaving, food, medicine, building, timber processing, papermaking, printing, agricultural
Etc. industries have a wide range of applications.The wherein other polyvinyl alcohol of medical grade, safe to the human body nontoxic, non-stimulated, no sensitization, without thin
Cellular toxicity has preferable biocompatibility, is to prepare one of ideal material of medical devices.
However, since PVA is excessively soft, intensity and flexibility are bad, to limit the range of its application.Cause
This, a kind of intensity is higher, the preferable plastics of flexibility have higher market value.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of PVA composite plastics, have intensity compared with
Advantage high, flexibility is preferable.
To achieve the above object, the present invention provides following technical solutions：
A kind of PVA composite plastics, including first layer and the second layer, the first layer include layer of PVC, pet layer, POF layers, TPU layer,
PE layers, PS layers, PC layers, abs layer, PU layers, PA layers, TPE layers, at least one of TPR layers, the second layer be PVA layers, it is described
First layer and the second layer are made by coextrusion mold；The ratio of the thickness of the first layer and the thickness of the second layer is 3-8: 2-7；
The density of the second layer is 1.2-2.4g/cm3, the second layer accounts for the 20-80% of the total weight of the second layer and first layer.
Through the above technical solutions, first layer and the second layer are made by coextrusion mold, and the second layer is PVA layers, nontoxic
It is harmless, it has no adverse effects to health, so as to make the PVA composite plastics in the application be applied to medical catheter, feeding bottle etc..
Although PVA layers have preferable flexible, its insufficient strength height.First layer be layer of PVC, pet layer, POF layers, in TPU layer extremely
Few one kind, and layer of PVC, pet layer, POF layer, TPU layer, PE layers, PS layers, PC layers, abs layer, PU layers, PA layers, TPE layers, TPR layers have
There is preferable intensity.After the second layer and first layer coextrusion mold, and the density of the second layer is 1.2-2.4g/cm3, the second layer accounts for
The 20-80% of the total weight of the second layer and first layer has adjusted the flexibility and intensity of the PVA composite plastics to be formed, and first
The thickness ratio of layer and the second layer is 3-8: 2-7, and being more advantageous to makes it while having preferable flexibility and intensity.In addition, the
Layer of PVC, pet layer in one layer, POF layers, TPU layer all have preferable anti-corrosion function, when in use securely and reliably, and use
It lasts a long time.
A kind of PVA composite plastics, including first layer and the second layer, the first layer include layer of PVC, pet layer, POF layers,
TPU layer, PE layers, PS layers, PC layers, abs layer, PU layers, PA layers, TPE layers, at least one of TPR layers, the second layer be PVA
Composition layer, the first layer and the second layer are made by coextrusion mold；The thickness of the first layer and the thickness of the second layer
Ratio is 3-8: 2-7；The density of the second layer is 1.2-2.4g/cm3, the second layer accounts for the gross weight of the second layer and first layer
The 20-80% of amount；The PVA composition layers are obtained by PVA composition extrusion formings, and the PVA compositions include following weight
The component of number：
PVA is 60-90 parts；
0.1-3 parts of glutaraldehyde；
4-10 parts of urea；
5-15 parts of glycerine；
2-10 parts of calcium chloride；
It is 0.1-2 parts sour；
The acid be mass fraction be 10-98% aqueous sulfuric acid, aliphatic carboxylic acid, pyrophosphoric acid, one kind in pyrosulfuric acid.
Through the above technical solutions, the PVA in PVA compositions is crosslinked with glutaraldehyde and reacted, three-dimensional netted knot is formed
Structure improves intensity, the heat resistance of PVA compositions.Acidic environment can promote glutaraldehyde and the cross-linking reaction of PVA, improve PVA combinations
The decomposition temperature of object, while the melting temperature of the PVA compositions after crosslinking is reduced, improve the machinability of PVA compositions.Urea
It is dispersed in PVA compositions, reduces the intermolecular active forces of PVA, significantly reduce the fusing point of PVA compositions.Glycerine makes PVA
Swelling, dilution, reduce PVA intermolecular forces, play the role of reducing PVA composition melting temperatures；Calcium chloride also functions to drop
The effect of low PVA compositions melting temperature.
Further preferably：The preparation method of the PVA compositions includes the following steps：
Step 1 takes PVA, acid mixing in parts by weight, adds urea, glycerine, calcium chloride heating, heating temperature 140-
220 DEG C, so that PVA is melted, acid PVA just batch mixings is obtained, and be granulated at a temperature of 140-220 DEG C, obtain pellet；
Step 2 makes the pellet for being granulated acquisition in step 1 uniformly be mixed with glutaraldehyde at 140-220 DEG C, obtains PVA combinations
Object intermediate materials；
The PVA composition intermediate materials obtained in step 2 are placed in the sodium hydroxide solution of a concentration of 5-10wt% by step 3
Middle immersion 24-48h；
Step 4 is taken out PVA composition intermediate materials from sodium hydroxide solution, is rinsed with deionized water, dry, obtains PVA
Composition.
Through the above technical solutions, in step 1, under acidic environment, keep PVA fully molten with urea, glycerine, calcium chloride
Melt uniformly mixed, helps to improve the distributing homogeneity of each component in pellet.And in step 2, pellet fully occurs with glutaraldehyde
Cross-linking reaction forms tridimensional network, improves the decomposition temperature of PPVA composition intermediate materials, while reducing PVA compositions
The melting temperature of intermediate materials improves the machinability of PVA composition intermediate materials.By PVA groups in step 3 and step 4
After conjunction object intermediate materials are fully impregnated and cleaned in sodium hydroxide solution, the PVA compositions for making finally to obtain is contributed to have
Globality, the stability of better particle.
Further preferably：The molecular weight of the PVA is 25000-3000000Da, alcoholysis degree 50-99%.
Through the above technical solutions, the molecular weight of PVA is smaller, melting temperature is also lower；The alcoholysis degree of PVA is lower, melting
Temperature is also lower.Molecular weight and alcoholysis degree are respectively in above range, help to make PVA compositions in the application have compared with
Low melting temperature.
Further preferably：The PVA composite plastics are tubing, and the first layer coextrusion mold is simultaneously set to the second layer
It is external.
Through the above technical solutions, the second layer is PVA layers, environmental non-toxic side effect adds first layer, tubing is made to have
Preferable compression strength and tensile strength, therefore, such tubing can be used for being made syringe, woven hose, medical catheter etc., liquid
Be in direct contact with PVA layers, liquid is not easily susceptible to pollute, using feel more relieved and safety.And review in the market use PVC, silica gel,
The tubing that TPU materials are directly prepared into, when liquid is in direct contact with it, harmful substance therein easily generates in various degree liquid
Pollution, or even jeopardize health.
Further preferably：The PVA composite plastics are sheet material.
Through the above technical solutions, the second layer is PVA layers, environmental non-toxic side effect adds first layer, sheet material is made to have
Preferable compression strength and tensile strength, therefore, which can be made into infusion bag, food storing bag, beverage bottle etc., with medicine
When liquid, food etc. are in direct contact, it is not easy to pollute liquid, food, improves the safety used.It reviews and uses in the market
The tubing that PVC, silica gel, TPU materials are directly prepared into, when liquid is in direct contact with it, harmful substance therein is easily to liquid, food
The different degrees of pollution of equal generations, or even jeopardize health.
Further preferably：The first layer is prepared using double-material extruder, an area of the double-material extruder
Temperature is 170-175 DEG C, and the temperature in 2nd area is 175-180 DEG C, and the temperature in 3rd area is 180-183 DEG C, and the temperature in 4th area is 178-
180℃；The rotating speed of the host of double-material extruder is 15-18r/s, and feeding rotating speed is 11-13r/s, squeezes out, obtains first layer.
Through the above technical solutions, the materials such as PVC, PET, POF, TPU are after double-material extruder is handled, the first of acquisition
Layer homogeneous and compactness it is preferable, make the later stage carry out coextrusion mold formed PVA composite plastics have better mechanical strength and
Flexibility.
Further preferably：Described PVA layers is prepared by PVA raw materials by double-material extruder, and the PVA is former
For material by being dried before preparation, the temperature of the drying process is 75-80 DEG C, and the time of the drying process is 4-
5h。
Through the above technical solutions, since PVA raw materials have preferable water absorbing properties, it is being prepared using double-material extruder
Before, moisture therein is dried, the PVA for making to prepare layers is contributed to keep preferable whole uniformity.And in above-mentioned temperature
With processing is dried in time range, the moisture in PVA can fully be removed.
Further preferably：When the PVA raw materials after drying process are handled in double-material extruder, the temperature in an area
It it is 180-185 DEG C, the temperature in 2nd area is 185-188 DEG C, and the temperature in 3rd area is 190-193 DEG C, and the temperature in 4th area is 195-198
DEG C, it squeezes out, obtains PVA layers.
Through the above technical solutions, helping to make the PVA layers of acquisition that there is preferable whole uniformity, while keeping preferable
Soft effect.
In conclusion the invention has the advantages that：
1.PVA composite plastics pass through coextrusion mold system using PVA layer and layer of PVC, pet layer, POF layers, at least one of TPU layer
At making the PVA composite plastics to be formed while there is preferable mechanical strength and flexibility；
2. the PVA composite plastics in the application may be utilized in fabricating medical catheter, woven hose, infusion bag, syringe, nipple, food
Reservoir bag, beverage bottle etc. are directly free of poisonous and harmful substance, safety and environmental protection with liquid, food contact portion；And away from liquid,
The part texture of food is harder, convenient for lifting, placing.
Description of the drawings
Fig. 1 is the structural schematic diagram of the PVA composite plastics of tubulose in embodiment 1, is mainly used for embodying first layer and second
The structure of layer；
Fig. 2 is the structural schematic diagram of the PVA composite plastics of sheet material shape in embodiment 10, is mainly used for embodying first layer and the second layer
Structure.
In figure, 1, first layer；2, the second layer.
Specific implementation mode
With reference to the accompanying drawings and examples, the present invention will be described in detail.
Embodiment 1：A kind of PVA composite plastics are tubulose, as shown in Figure 1, including first layer 1 (outside) and the second layer 2
(inside), and first layer 1 is layer of PVC, the second layer 2 is PVA layers, is made by coextrusion mold, and PVA layers of density is 1.2g/
cm3, and layer of PVC is coated on PVA layers of outside, wherein the ratio between the thickness of layer of PVC and PVA layers of thickness are 3: 7, PVA layers and account for
PVA layers and the 80% of the total weight of layer of PVC.
Wherein, for layer of PVC in preparation process, the temperature in an area of double-material extruder is 170 DEG C, and the temperature in 2nd area is 175
DEG C, the temperature in 3rd area is 180 DEG C, and the temperature in 4th area is 180 DEG C；The rotating speed of the host of double-material extruder is 15r/s, feeding rotating speed
It for 11r/s, squeezes out, obtains layer of PVC.PVA layers are prepared by PVA raw materials by double-material extruder, the PVA raw materials
By being dried before preparation, the temperature of the drying process is 80 DEG C, and the time of the drying process is 4h.PVA is former
When material is handled in double-material extruder, the temperature in an area is 180 DEG C, and the temperature in 2nd area is 185 DEG C, and the temperature in 3rd area is 190 DEG C,
The temperature in 4th area is 195 DEG C, is squeezed out, and obtains PVA layers.
Embodiment 2：A kind of PVA composite plastics, difference lies in PVA layers of density is 1.8g/cm with embodiment 13。
Embodiment 3：A kind of PVA composite plastics, difference lies in PVA layers of density is 2.4g/cm with embodiment 13, PVC
The ratio between the thickness of layer and PVA layers of thickness are 5: 5.
Wherein, for layer of PVC in preparation process, the temperature in an area of double-material extruder is 175 DEG C, and the temperature in 2nd area is 180
DEG C, the temperature in 3rd area is 183 DEG C, and the temperature in 4th area is 178 DEG C；The rotating speed of the host of double-material extruder is 18r/s, feeding rotating speed
It for 13r/s, squeezes out, obtains layer of PVC.PVA layers are prepared by PVA raw materials by double-material extruder, the PVA raw materials
By being dried before preparation, the temperature of the drying process is 75 DEG C, and the time of the drying process is 5h.PVA is former
When material is handled in double-material extruder, the temperature in an area is 185 DEG C, and the temperature in 2nd area is 188 DEG C, and the temperature in 3rd area is 193 DEG C,
The temperature in 4th area is 198 DEG C, is squeezed out, and obtains PVA layers.
Embodiment 4：A kind of PVA composite plastics, difference lies in the thickness of layer of PVC and PVA layers of thickness with embodiment 1
The ratio between account for PVA layers and layer of PVC for 8: 2, PVA layer total weight 20%.
Embodiment 5：A kind of PVA composite plastics, difference lies in PVA layers of density is 2.0g/cm3, PVC with embodiment 1
The 70% of the total weight that the ratio between the thickness of layer and PVA layers of thickness account for PVA layers and layer of PVC for 4: 6, PVA layers.
Embodiment 6：A kind of PVA composite plastics, difference lies in PVA layers of density is 1.5g/cm3, PVC with embodiment 1
The 40% of the total weight that the ratio between the thickness of layer and PVA layers of thickness account for PVA layers and layer of PVC for 6: 4, PVA layers.
Embodiment 7：A kind of PVA composite plastics, difference lies in replace layer of PVC with pet layer with embodiment 1.
Embodiment 8：A kind of PVA composite plastics, difference lies in replace layer of PVC with POF layers with embodiment 1.
Embodiment 9：A kind of PVA composite plastics, difference lies in replace layer of PVC with TPU layer with embodiment 1.
Embodiment 10：A kind of PVA composite plastics, difference lies in be sheet, cross section such as Fig. 2 institutes with embodiment 1
Show.
Embodiment 11-16：A kind of PVA composite plastics, difference lies in replaced using PVA composition layers with embodiment 1
PVA layers, PVA composition layers are made by PVA compositions through double end extruder for shaping, wherein PVA compositions include
Component and its corresponding parts by weight are as shown in table 1, wherein acid uses a concentration of 98% aqueous sulfuric acid.And PVA is combined
Acquisition is made by the steps in object：
Step 1 takes PVA, acid mixing in parts by weight, adds urea, glycerine, calcium chloride heating, and heating temperature is 140 DEG C,
So that PVA is melted, acid PVA just batch mixings is obtained, and be granulated at a temperature of 140 DEG C, obtain pellet；
Step 2 makes the pellet for being granulated acquisition in step 1 uniformly be mixed with glutaraldehyde, obtains in PVA compositions at 140 DEG C
Between material；
The PVA composition intermediate materials obtained in step 2 are placed in the sodium hydroxide solution of a concentration of 5wt% and soak by step 3
Steep 48h；Step 4 is taken out PVA composition intermediate materials from sodium hydroxide solution, is rinsed with deionized water, dry, obtains
PVA compositions.
Wherein, the molecular weight of PVA is 25000-300000Da, alcoholysis degree 50-99%.
The component and its corresponding weight (kg) that PVA compositions include in 1 embodiment 11-16 of table
Embodiment 17：A kind of PVA composite plastics, with embodiment 11 difference lies in, in step 1, heating temperature 180
DEG C, so that PVA is melted, acid PVA just batch mixings is obtained, and be granulated at a temperature of 220 DEG C, obtain pellet.
Embodiment 18：A kind of PVA composite plastics, with embodiment 11 difference lies in, in step 1, heating temperature 220
DEG C, so that PVA is melted, acid PVA just batch mixings is obtained, and be granulated at a temperature of 220 DEG C, obtain pellet.
Embodiment 19：A kind of PVA composite plastics, difference lies in step 2, at 220 DEG C, make grain with embodiment 11
Material is uniformly mixed with glutaraldehyde, obtains PVA composition intermediate materials.
Embodiment 20：A kind of PVA composite plastics, difference lies in, will be in PVA compositions in step 3 with embodiment 11
Between material be placed in the sodium hydroxide solution of a concentration of 8wt% and impregnate 35h.
Embodiment 21：A kind of PVA composite plastics, difference lies in, will be in PVA compositions in step 3 with embodiment 11
Between material be placed in the sodium hydroxide solution of a concentration of 10wt% and impregnate for 24 hours.
Comparative example 1：A kind of composite plastic, difference lies in replace PVA layers using the layer of PVC of equivalent with embodiment 1.
Comparative example 2：A kind of PVA composite plastics, difference lies in layer of PVC is in inside, and PVA layers on the outside with embodiment 1.
Characterization experiment
Test specimen：The PVA composite plastics obtained in embodiment 1-21 are chosen as test sample 1-21, are chosen in comparative example 1-2
The composite plastic of acquisition, PVA composite plastics sample 1-2 as a contrast.
Test method：The detection of elongation at break and shore hardness is carried out to test sample 1-21, control sample 1-2.
Test result：Indices in test sample 1-21, control sample 1-2 are as shown in table 2.
Indices in 2 test sample 1-21 of table, control sample 1-2
As shown in Table 2, the fracture that the elongation at break in test sample 1-21, shore hardness are respectively greater than in control sample 1 is stretched
Long rate, shore hardness, the haemolysis in test sample 1-21 is much smaller than the haemolysis in control sample 1；Although the extension at break in control sample 2
Rate, shore hardness are close with elongation at break, the shore hardness in test sample 1-21 respectively, but its haemolysis is far above test sample
Haemolysis in 1-21 illustrates that the mechanical strength of test sample 1-21, toughness are preferable, and safety is non-hazardous, is not easy to cause to hinder to human body
Evil, and the mechanical strength of control sample 1, toughness are poor, and it is harmful, in control sample 2, PVC has larger shadow to haemolysis
It rings.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of PVA composite plastics, which is characterized in that including first layer（1）And the second layer（2）, the first layer（1）Including
Layer of PVC, pet layer, POF layers, TPU layer, PE layers, PS layers, PC layers, abs layer, PU layers, PA layers, TPE layers, at least one in TPR layers
Kind, the second layer（2）It is PVA layers, the first layer（1）And the second layer（2）It is made by coextrusion mold；The first layer
（1）Thickness and the second layer（2）Thickness ratio be 3-8:2-7；The second layer（2）Density be 1.2-2.4g/cm3,
The second layer（2）Account for the second layer（2）And first layer（1）Total weight 20-80%.
2. a kind of PVA composite plastics, which is characterized in that including first layer（1）And the second layer（2）, the first layer（1）Including
Layer of PVC, pet layer, POF layers, TPU layer, PE layers, PS layers, PC layers, abs layer, PU layers, PA layers, TPE layers, at least one in TPR layers
Kind, the second layer（2）For PVA composition layers, the first layer（1）And the second layer（2）It is made by coextrusion mold；Described
One layer（1）Thickness and the second layer（2）Thickness ratio be 3-8:2-7；The second layer（2）Density be 1.2-2.4g/
cm3, the second layer（2）Account for the second layer（2）And first layer（1）Total weight 20-80%；The PVA composition layers are by PVA
Composition extrusion forming obtains, and the PVA compositions include the component of following parts by weight：
PVA is 60-90 parts；
0.1-3 parts of glutaraldehyde；
4-10 parts of urea；
5-15 parts of glycerine；
2-10 parts of calcium chloride；
It is 0.1-2 parts sour；
The acid be mass fraction be 10-98% aqueous sulfuric acid, aliphatic carboxylic acid, pyrophosphoric acid, one kind in pyrosulfuric acid.
3. a kind of PVA composite plastics according to claim 2, which is characterized in that the preparation method packet of the PVA compositions
Include following steps：
Step 1 takes PVA, acid mixing in parts by weight, adds urea, glycerine, calcium chloride heating, heating temperature 140-
220 DEG C, so that PVA is melted, acid PVA just batch mixings is obtained, and be granulated at a temperature of 140-220 DEG C, obtain pellet；
Step 2 makes the pellet for being granulated acquisition in step 1 uniformly be mixed with glutaraldehyde at 140-220 DEG C, obtains PVA combinations
Object intermediate materials；
The PVA composition intermediate materials obtained in step 2 are placed in the sodium hydroxide solution of a concentration of 5-10wt% by step 3
Impregnate 24-48h；
Step 4 is taken out PVA composition intermediate materials from sodium hydroxide solution, is rinsed with deionized water, dry, obtains PVA
Composition.
4. a kind of PVA composite plastics according to claim 3, which is characterized in that the molecular weight of the PVA is 25000-
3000000 Da, alcoholysis degree 50-99%.
5. according to a kind of PVA composite plastics arbitrary described in claim 1-4, which is characterized in that the PVA composite plastics are
Tubing, the first layer（1）Coextrusion mold is simultaneously set to the second layer（2）Outside.
6. according to a kind of PVA composite plastics arbitrary described in claim 1-4, which is characterized in that the PVA composite plastics are
Sheet material.
7. a kind of PVA composite plastics according to claim 5, which is characterized in that the first layer（1）Using extra quality extrusion
Prepared by machine, the temperature in an area of the double-material extruder is 170-175 DEG C, and the temperature in 2nd area is 175-180 DEG C, 3rd area
Temperature is 180-183 DEG C, and the temperature in 4th area is 178-180 DEG C；The rotating speed of the host of double-material extruder is 15-18r/s, and feeding turns
Speed is 11-13r/s, is squeezed out, and first layer is obtained（1）.
8. a kind of PVA composite plastics according to claim 5, which is characterized in that described PVA layers is passed through by PVA raw materials
Double-material extruder is prepared, and by being dried before preparation, the temperature of the drying process is the PVA raw materials
75-80 DEG C, the time of the drying process is 4-5h.
9. a kind of PVA composite plastics according to claim 8, which is characterized in that the PVA raw materials after drying process
When being handled in double-material extruder, the temperature in an area is 180-185 DEG C, and the temperature in 2nd area is 185-188 DEG C, and the temperature in 3rd area is
190-193 DEG C, the temperature in 4th area is 195-198 DEG C, squeezes out, obtains PVA layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810222428.9A CN108422721B (en) | 2018-03-16 | 2018-03-16 | PVA composite plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810222428.9A CN108422721B (en) | 2018-03-16 | 2018-03-16 | PVA composite plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108422721A true CN108422721A (en) | 2018-08-21 |
| CN108422721B CN108422721B (en) | 2020-10-23 |
Family
ID=63158882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810222428.9A Active CN108422721B (en) | 2018-03-16 | 2018-03-16 | PVA composite plastic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108422721B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112773724A (en) * | 2021-02-02 | 2021-05-11 | 广州市宝贝乐婴童用品有限公司 | 65-caliber nipple double holes |
| CN113910730A (en) * | 2021-10-13 | 2022-01-11 | 苏州康乐兴电子有限公司 | Preparation method of composite plastic |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290208A (en) * | 1997-12-31 | 2001-04-04 | 金伯利-克拉克环球有限公司 | Method for making water degradable polymer microlayer film |
| CN1962237A (en) * | 2006-11-24 | 2007-05-16 | 四川大学 | Polyvinyl alcohol hollow container preparation method |
-
2018
- 2018-03-16 CN CN201810222428.9A patent/CN108422721B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290208A (en) * | 1997-12-31 | 2001-04-04 | 金伯利-克拉克环球有限公司 | Method for making water degradable polymer microlayer film |
| CN1962237A (en) * | 2006-11-24 | 2007-05-16 | 四川大学 | Polyvinyl alcohol hollow container preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 李红强: "《胶粘原理、技术及应用》", 31 January 2014, 华南理工大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112773724A (en) * | 2021-02-02 | 2021-05-11 | 广州市宝贝乐婴童用品有限公司 | 65-caliber nipple double holes |
| CN113910730A (en) * | 2021-10-13 | 2022-01-11 | 苏州康乐兴电子有限公司 | Preparation method of composite plastic |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108422721B (en) | 2020-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mahfoudhi et al. | Poly (acrylic acid-co-acrylamide)/cellulose nanofibrils nanocomposite hydrogels: effects of CNFs content on the hydrogel properties | |
| WO2008103123A3 (en) | Polymeric film or coating comprising hemicellulose | |
| CN109054145B (en) | Antibacterial polyethylene food packaging film and preparation method thereof | |
| CN110790885B (en) | Polyvinyl alcohol/chitosan quaternary ammonium salt antibacterial self-healing hydrogel and preparation method and application thereof | |
| CN103360679B (en) | Non-woven fabrics strengthens anti-agglomeration antibacterial filler masterbatch and preparation technology thereof with efficient | |
| CN105713106B (en) | Double cross-linked hydrogels of a kind of sodium alginate and preparation method and application | |
| CN104771780A (en) | Polymeric hydrogel for dressing and preparation method of polymeric hydrogel | |
| Wang et al. | Strong, transparent, and thermochromic composite hydrogel from wood derived highly mesoporous cellulose network and PNIPAM | |
| CN108422721A (en) | A kind of PVA composite plastics | |
| US11877612B2 (en) | Latex dipped article with a modified polyvinyl alcohol layer which resist to water, solvents and diluted solvents | |
| EP0407147B1 (en) | Articles molded from moisture shrinkable resins | |
| CN102492162A (en) | Epsilon-polylysine and polyvinyl alcohol composite biological antibacterial film and its preparation method | |
| CN101747443B (en) | Macromolecular coupling agent for bacterial cellulose surface modification as well as preparation method and application thereof | |
| CN102585265B (en) | Preparation method of gelatin/poli vinyl alcohol (PVA) composite films crosslinked with glutaraldehyde solution | |
| Kim et al. | Production of flame-resistant bacterial cellulose using whey protein isolate or casein via physical entrapment and crosslinking | |
| JPH0388835A (en) | Rubber which swells due to water and aqueous solution and its manufacture | |
| CN102558589B (en) | Preparation method of formaldehyde cross-linked gelatin/polyvinyl alcohol(PVA) composite membrane | |
| CN112409777A (en) | Medical antibacterial breathable TPU film and preparation method thereof | |
| CN110066442B (en) | High-oxygen-resistance polyethylene composite material and preparation method and application thereof | |
| Lin et al. | Research progress in starch/poly (vinyl alcohol) active packaging film and its application in food packaging | |
| CN109880218B (en) | Water-blown antibacterial breathable microporous film master batch, film and preparation method | |
| CN114716718A (en) | Double-network conductive hydrogel and preparation method thereof | |
| Zhang et al. | Preparation and characterization of montmorillonnite/tamarind gum/sodium alginate composite gel beads | |
| CN107903477A (en) | A kind of degradable polyethylene plastic bag of environmental protection | |
| CN108440882A (en) | PVA composite plastic pipes |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |