CN108659424A - A kind of water dissolving type prilling process of modified polyvinylalcohol - Google Patents
A kind of water dissolving type prilling process of modified polyvinylalcohol Download PDFInfo
- Publication number
- CN108659424A CN108659424A CN201810505293.7A CN201810505293A CN108659424A CN 108659424 A CN108659424 A CN 108659424A CN 201810505293 A CN201810505293 A CN 201810505293A CN 108659424 A CN108659424 A CN 108659424A
- Authority
- CN
- China
- Prior art keywords
- water dissolving
- temperature
- modified polyvinylalcohol
- dissolving type
- prilling process
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention provides a kind of water dissolving type prilling process of modified polyvinylalcohol, include the following steps：Polyvinyl alcohol is added to the water, it dissolves by heating, plasticizer and hyperbranched aromatic polyamide polymer are sequentially added into acquired solution and are stirred, it after solution cooling, is sealed after auxiliary agent is added, after products therefrom is carried out first time drying, extruding pelletization, gained particle is carried out second again to dry, the mass fraction of polyvinyl alcohol is 10~20%, and the temperature of heating is 80~100 DEG C.Water dissolving type preparation method provided by the invention, each uniform component distribution in preparation process, the product transparency being prepared are high, good toughness, the compounding of two kinds of plasticizer of trimethylolpropane and glycerine, produces synergistic effect, keeps granulating and forming good, the salubrious non-greasy of product surface sense of touch, there is no exacting terms in preparation process, does not need high-temperature fusion, it is easy to operate, it is safe, it is readily produced.
Description
Technical field
The invention belongs to field of polymer material preparing technology, and in particular to a kind of water dissolving type granulation of modified polyvinylalcohol
Method.
Background technology
Polyvinyl alcohol (Polyvinyl alcohol, PVA) is a kind of water soluble polymer of excellent combination property.PVA's
Oil resistant, solvent resistant and gas barrier property are especially outstanding, have unique advantage in terms of the packagings such as organic solvent, food and medicine.
Due to containing a large amount of activity hydroxy on PVA macromolecular chains, a large amount of intramolecular and intermolecular hydrogen bonding are easily formed, leads to PVA's
Melting temperature and its heat decomposition temperature are fairly close, and melting is decomposed, thus are difficult to carry out thermoplastic processing.PVA is heated to 200 DEG C
Start to change colour above, 240~250 DEG C start to decompose, 300 DEG C of method and processes that can acutely decompose, therefore cannot routinely melt
PVA is processed.And solution processing and forming technology is complicated, of high cost, environmental pollution is big, it is difficult to it is complex-shaped to prepare heavy wall pipe
Product.Therefore melting temperature is reduced, it is to realize the molding necessary condition of PVA melt-processeds to improve thermal stability.
According to above-mentioned principle, to improve its melt-processable, it is necessary to be modified to it, such as destroy its hydrogen bond, subtract
Weak PVA macromoleculars intermolecular forces or the compliance for changing chain to reduce its fusing point, or reduce hydrogen bond quantity therein.In this regard, state
Inside and outside researcher has carried out numerous studies, is mainly total to the methods of mixed solution plasticising including modification by copolymerization, high polymer.Copolymerization changes
Property.The weaker monomer of other active forces is introduced in PVA strands by copolymerization about modification by copolymerization, such as introduces vinyl,
Intermolecular force can be weakened, make the reduction of its fusing point.The strand compliance of comonomer is higher, and regularity is poorer, modified effect
Fruit is better.Its fusing point can be effectively reduced with vinyl monomer modified PVA, such as Mitsubishi chemistry, Sumitomo Chemical company have
Patent in this respect.In their patent, vinyl monomer and vinyl acetate are copolymerized, obtain modified PVA through alkali saponified, so
Melt spinning is carried out at 150 DEG C or more afterwards, PVA mass percentages are not less than 50% in copolymer.Kuraray company closes
At can thermoplastic processing PVA, which contains alpha-olefin unit of the carbon atom number less than 4 and/or ethylene ether unit, fusing point are
160~230 DEG C；About blending and modifying, blending can make Properties of Polymer be complementary to one another, maximize favourable factors and minimize unfavourable ones, but must solve compatible
Sex chromosome mosaicism.The substance that can be blended with PVA has water-soluble natural macromolecule and synthetic macromolecular compound, the former as cornstarch,
Animal glue etc., the latter have polyamide (PA6), soluble polyurethane etc., this is because they, which are all carried, to generate hydrogen bond with hydroxyl
Group play modifying function to destroy the intermolecular powerful active forces of PVA.After PVA is mixed with polyamide, wax-like polyethylene,
There is good amalgamation and homogeneity through melting extrusion and compacting products therefrom.N-Butaneboronic acid and phenylboric acid and PVA
Hydroxyl, which can also react, obtains PVA- boric acid compounds, which has compared with low melting point, and the reduction of fusing point contains with boric acid
It measures related.With the increase of boric acid content, the melting temperature of the compound declines, and degradation temperature rises so that this compound can be into
Row melt-processed；It is plasticized about solution, plasticizer, which is added, can make high polymer that swelling or dilution occur, to change between macromolecule
Active force, play the role of reducing fusing point, the common plasticizer of PVA have water, glycerine, polyalcohol and its oligomer, alcamines
Modifying agent etc..
CN101864084A discloses a kind of hydroxyethyl cellulose/polyving akohol blend membrane and preparation method thereof, the invention
Be made blend film using the tape casting, then with phosphate cross, obtain with excellent mechanical performances, thermal stability, hydrolysis, anti-ageing
Change, while also keeping excellent biodegradable blend film, can be widely used for the fields such as medicine, cosmetics, food packaging, so
And the thermal stability for illustrating polyvinyl alcohol modification blend film is not known in the invention.CN101210075 discloses one kind and containing ion
Thin polymer film of liquid and preparation method thereof, thin polymer film are supported on the ionic liquid of membrane material by membrane material and absorption
It is made, ionic liquid weight accounts for the 0.1~70% of thin polymer film weight, by by the water of ion liquid dissolving to polyvinyl alcohol
After forming uniform solution in solution, then drying at room temperature film forming obtains thin polymer film with cross-linking agents.The film of the invention
With preferable thermal stability and mechanical stability, synthetic operation is simple, in catalytic esterification and organic sulfur compound, aromatic hydrocarbons, alkane
Separation etc. during have potential application, while before Membrane catalysis, separation analysis etc. have a wide range of applications
Scape.However, the ionic liquid used in this method is expensive, and the thermal stability of the film also with no specific disclosure of.
CN1786302A discloses a kind of method preparing high performance polyvinyl alcohel fiber using melt spinning, and this method is used by nitrogenous
Compound, the composite modifier of hydrophily auxiliary additive and water composition and polyvinyl alcohol progress intermolecular hydrogen bonding are compound, prepare
Modified polyvinylalcohol, the invention is by the compound melt spinning for realizing polyvinyl alcohol of intermolecular hydrogen bonding and super drawing, from logical
The vinal that excellent in mechanical performance is prepared with grade polyvinyl alcohol, is not required to the correlations such as coagulating bath in conventional wet spinning process
Complicated procedures of forming, it is simple for process, economical, environmentally friendly, it is easy to accomplish industrialized production, although however, polyalcohol and oligomeric in this method
Object can slightly reduce the fusing point of PVA, but fusing point is poor with decomposition temperature, and plasticizing effect is limited there is no largely pulling open.
In conclusion in existing PVA method of modifying, the method for modifying of modification by copolymerization is more demanding to equipment and technology,
And modification cannot achieve to large commercialized common PVA products, there is also some technologies for existing blending modification method
Bottleneck, the compatibility of system is not yet fully solved when blending, it is difficult to realize industrialization, and the method for existing solution plasticising is general
Melting temperature is only reduced, and since conventional plasticizers are easy vaporization under the conditions of high-temperature fusion, escapes modified system and pollute
Production environment brings a negative impact material composition and processing flow.Therefore, it is still necessary to develop a kind of system of new modified PVA
Preparation Method.
Invention content
To solve problems of the prior art, the present invention provides a kind of water dissolving type granulation sides of modified polyvinylalcohol
Method.
To achieve the above object, the present invention uses following technical scheme：
A kind of water dissolving type prilling process of modified polyvinylalcohol, includes the following steps：
(1) polyvinyl alcohol is added to the water, is dissolved by heating；
(2) plasticizer and hyperbranched aromatic polyamide polymer are sequentially added into step (1) acquired solution and are stirred；
(3) it after step (2) acquired solution cooling down, is sealed after auxiliary agent is added；
(4) after step (3) products therefrom being carried out first time drying, extruding pelletization；
(5) particle obtained by step (4) second is carried out to dry.
Preferably, in step (1) acquired solution, the mass fraction of polyvinyl alcohol is 10~20%.
Preferably, in step (1) acquired solution, the temperature of the heating is 80~100 DEG C, and heating time is 4~12h.
Preferably, step (2) the plasticizer is at least one of oiliness plasticizer and aqueous plasticizer.
Preferably, the oiliness plasticizer is glycerine, and the aqueous plasticizer is trimethylolpropane.
Preferably, the additive amount of the glycerine is the 2~20% of solution quality, and the additive amount of the trimethylolpropane is
The 1~15% of solution quality.
Preferably, the additive amount of step (2) the hyperbranched aromatic polyamide polymer be solution quality 0.5~
0.7%, the hyperbranched aromatic polyamide polymer refers to a series of dissaving polymers containing hydroxyl.
Preferably, the temperature of step (3) described cooling is≤60 DEG C.
Preferably, step (3) described auxiliary agent is the mixture of n,N-Dimethylformamide and urea, the quality of the auxiliary agent
Score is 3~15%.
Preferably, the mass ratio of n,N-Dimethylformamide and urea is (1~5) in the mixture：1.
Preferably, the temperature of step (4) the first time drying is 40~60 DEG C, and drying time is 3~12h, after drying
Moisture in product is 10~30%, and product is the solid matter of softness.
Preferably, the temperature of step (5) second drying is 40~60 DEG C, drying time is 4~for 24 hours.
Preferably, after step (5) second of drying, moisture≤5% in product.
Preferably, it after step (3), can first vacuumize, then extruding pelletization after product is dried.
Step (3) seals after auxiliary agent is added, and can prevent urea from evaporateing into outside system.
If disposable drying is to moisture≤5%, colloid can be hardened, and be not suitable for the extruding pelletization not heated.
In auxiliary agent, n,N-Dimethylformamide is non-protonic polar solvent, can be with the water and majority in addition to halogenated hydrocarbon
Organic solvent arbitrarily mixes, and has good solvability to a variety of organic compounds and inorganic compound, in alkali-free, acid, water
In the presence of, there is good chemical stability.
Beneficial effects of the present invention
1, water dissolving type preparation method provided by the invention, each uniform component distribution, is prepared in preparation process
Product transparency is high, good toughness；
2, in preparation process, dissaving polymer is introduced, the mobility of product is improved, reduces melting temperature,
Difference between melting temperature and decomposition temperature has reached 65 DEG C；
3, by the compounding of two kinds of plasticizer of trimethylolpropane and glycerine, synergistic effect is produced, keeps granulating and forming good,
The salubrious non-greasy of product surface sense of touch；
4, the modified polyvinylalcohol being prepared through the invention convenient for blown film and is used to prepare washing ball etc., using model
It encloses extensively；
5, there is no exacting terms in preparation process, do not need high-temperature fusion, it is easy to operate, it is safe, it is readily produced.
Specific implementation mode
The following is specific embodiments of the present invention, and is further retouched to technical scheme of the present invention work in conjunction with the embodiments
It states, however, the present invention is not limited to these examples.
Embodiment 1
A kind of water dissolving type prilling process of modified polyvinylalcohol, includes the following steps：
(1) polyvinyl alcohol is added to the water, is dissolved by heating；
(2) plasticizer and hyperbranched aromatic polyamide polymer are sequentially added into step (1) acquired solution and are stirred；
(3) it after step (2) acquired solution cooling down, is sealed after auxiliary agent is added；
(4) after step (3) products therefrom being carried out first time drying, extruding pelletization；
(5) particle obtained by step (4) second is carried out to dry.
In step (1) acquired solution, the mass fraction of polyvinyl alcohol is 10%, and the temperature of heating is 90 DEG C, and step (2) increases
It is glycerine and trimethylolpropane to mould agent, and the additive amount of glycerine is 2%, and the additive amount of trimethylolpropane is 1%, hyperbranched virtue
The additive amount of fragrant polyamide polymer is 0.5%, and the temperature after step (3) cooling is 50 DEG C, the quality point of step (3) auxiliary agent
Number is 3%, and auxiliary agent is the mixture of n,N-Dimethylformamide and urea, n,N-Dimethylformamide and urea in mixture
Mass ratio is 1：1, the temperature of step (4) the first time drying is 50 DEG C, and the temperature of step (5) second of drying is 50
℃。
Embodiment 2
A kind of water dissolving type prilling process of modified polyvinylalcohol, includes the following steps：
(1) polyvinyl alcohol is added to the water, is dissolved by heating；
(2) plasticizer and hyperbranched aromatic polyamide polymer are sequentially added into step (1) acquired solution and are stirred；
(3) it after step (2) acquired solution cooling down, is sealed after auxiliary agent is added；
(4) after step (3) products therefrom being carried out first time drying, extruding pelletization；
(5) particle obtained by step (4) second is carried out to dry.
In step (1) acquired solution, the mass fraction of polyvinyl alcohol is 10%, and the temperature of heating is 90 DEG C, and step (2) increases
It is glycerine and trimethylolpropane to mould agent, and the additive amount of glycerine is 20%, and the additive amount of trimethylolpropane is 15%, hyperbranched
The additive amount of aromatic polyamide polymer is 0.7%, and the temperature after step (3) cooling is 50 DEG C, the quality of step (3) auxiliary agent
Score is 15%, and auxiliary agent is the mixture of n,N-Dimethylformamide and urea, n,N-Dimethylformamide and urine in mixture
The mass ratio of element is 5：1, the temperature of step (4) the first time drying is 50 DEG C, the temperature of step (5) second of drying
It is 50 DEG C.
Embodiment 3
A kind of water dissolving type prilling process of modified polyvinylalcohol, includes the following steps：
(1) polyvinyl alcohol is added to the water, is dissolved by heating；
(2) plasticizer and hyperbranched aromatic polyamide polymer are sequentially added into step (1) acquired solution and are stirred；
(3) it after step (2) acquired solution cooling down, is sealed after auxiliary agent is added；
(4) after step (3) products therefrom being carried out first time drying, extruding pelletization；
(5) particle obtained by step (4) second is carried out to dry.
In step (1) acquired solution, the mass fraction of polyvinyl alcohol is 15%, and the temperature of heating is 90 DEG C, and step (2) increases
It is glycerine and trimethylolpropane to mould agent, and the additive amount of glycerine is 10%, and the additive amount of trimethylolpropane is 7%, hyperbranched
The additive amount of aromatic polyamide polymer is 0.6%, and the temperature after step (3) cooling is 50 DEG C, the quality of step (3) auxiliary agent
Score is 9%, and auxiliary agent is the mixture of n,N-Dimethylformamide and urea, n,N-Dimethylformamide and urea in mixture
Mass ratio be 3：1, the temperature of step (4) the first time drying is 50 DEG C, and the temperature of step (5) second of drying is
50℃。
Embodiment 4
A kind of water dissolving type prilling process of modified polyvinylalcohol, includes the following steps：
(1) polyvinyl alcohol is added to the water, is dissolved by heating；
(2) plasticizer and hyperbranched aromatic polyamide polymer are sequentially added into step (1) acquired solution and are stirred；
(3) it after step (2) acquired solution cooling down, is sealed after auxiliary agent is added；
(4) by step (3) products therefrom vacuumize process；
(5) after step (4) products therefrom being carried out first time drying, extruding pelletization；
(6) particle obtained by step (5) second is carried out to dry.
In step (1) acquired solution, the mass fraction of polyvinyl alcohol is 10%, and the temperature of heating is 90 DEG C, and step (2) increases
It is glycerine and trimethylolpropane to mould agent, and the additive amount of glycerine is 20%, and the additive amount of trimethylolpropane is 15%, hyperbranched
The additive amount of aromatic polyamide polymer is 0.7%, and the temperature after step (3) cooling is 50 DEG C, the quality of step (3) auxiliary agent
Score is 15%, and auxiliary agent is the mixture of n,N-Dimethylformamide and urea, n,N-Dimethylformamide and urine in mixture
The mass ratio of element is 5：1, the temperature of step (5) the first time drying is 50 DEG C, the temperature of step (6) second of drying
It is 50 DEG C.
Comparative example 1
A kind of water dissolving type prilling process of modified polyvinylalcohol, includes the following steps：
(1) polyvinyl alcohol is added to the water, is dissolved by heating；
(2) plasticizer and hyperbranched aromatic polyamide polymer are sequentially added into step (1) acquired solution and are stirred；
(3) it after step (2) acquired solution cooling down, is sealed after auxiliary agent is added；
(4) after step (3) products therefrom being carried out first time drying, extruding pelletization；
(5) particle obtained by step (4) second is carried out to dry.
In step (1) acquired solution, the mass fraction of polyvinyl alcohol is 10%, and the temperature of heating is 90 DEG C, and step (2) increases
Modeling agent is glycerine, and the additive amount of glycerine is 20%, and the additive amount of hyperbranched aromatic polyamide polymer is 0.7%, step (3)
Temperature after cooling is 50 DEG C, and the mass fraction of step (3) auxiliary agent is 15%, and auxiliary agent is n,N-Dimethylformamide and urea
Mixture, the mass ratio of n,N-Dimethylformamide and urea is 5 in mixture：1, the temperature of step (4) the first time drying
Degree is 50 DEG C, and the temperature of step (5) second of drying is 50 DEG C.
Comparative example 2
A kind of water dissolving type prilling process of modified polyvinylalcohol, includes the following steps：
(1) polyvinyl alcohol is added to the water, is dissolved by heating；
(2) plasticizer and hyperbranched aromatic polyamide polymer are sequentially added into step (1) acquired solution and are stirred；
(3) it after step (2) acquired solution cooling down, is sealed after auxiliary agent is added；
(4) after step (3) products therefrom being carried out first time drying, extruding pelletization；
(5) particle obtained by step (4) second is carried out to dry.
In step (1) acquired solution, the mass fraction of polyvinyl alcohol is 10%, and the temperature of heating is 90 DEG C, and step (2) increases
It is glycerine and trimethylolpropane to mould agent, and the additive amount of glycerine is 20%, and the additive amount of trimethylolpropane is 15%, hyperbranched
The additive amount of aromatic polyamide polymer is 0.7%, and the temperature after step (3) cooling is 50 DEG C, the quality of step (3) auxiliary agent
Score is 15%, and auxiliary agent is the mixture of n,N-Dimethylformamide and urea, n,N-Dimethylformamide and urine in mixture
The mass ratio of element is 5：1, the temperature of step (4) the first time drying is 100 DEG C, the temperature of step (5) second of drying
Degree is 50 DEG C.
Comparative example 3
A kind of water dissolving type prilling process of modified polyvinylalcohol, includes the following steps：
(1) polyvinyl alcohol is added to the water, is dissolved by heating；
(2) plasticizer and hyperbranched aromatic polyamide polymer are sequentially added into step (1) acquired solution and are stirred；
(3) it after step (2) acquired solution cooling down, is sealed after auxiliary agent is added；
(4) after step (3) products therefrom being carried out first time drying, extruding pelletization；
(5) particle obtained by step (4) second is carried out to dry.
In step (1) acquired solution, the mass fraction of polyvinyl alcohol is 10%, and the temperature of heating is 90 DEG C, and step (2) increases
It is glycerine and trimethylolpropane to mould agent, and the additive amount of glycerine is 20%, and the additive amount of trimethylolpropane is 15%, hyperbranched
The additive amount of aromatic polyamide polymer is 0.7%, and the temperature after step (3) cooling is 70 DEG C, the quality of step (3) auxiliary agent
Score is 15%, and auxiliary agent is the mixture of n,N-Dimethylformamide and urea, n,N-Dimethylformamide and urine in mixture
The mass ratio of element is 5：1, the temperature of step (4) the first time drying is 50 DEG C, the temperature of step (5) second of drying
It is 50 DEG C.
Comparative example 4
A kind of water dissolving type prilling process of modified polyvinylalcohol, includes the following steps：
(1) polyvinyl alcohol is added to the water, is dissolved by heating；
(2) plasticizer and hyperbranched aromatic polyamide polymer are sequentially added into step (1) acquired solution and are stirred；
(3) it after step (2) acquired solution cooling down, is sealed after auxiliary agent is added；
(4) after step (3) products therefrom being carried out first time drying, extruding pelletization；
(5) particle obtained by step (4) second is carried out to dry.
In step (1) acquired solution, the mass fraction of polyvinyl alcohol is 10%, and the temperature of heating is 90 DEG C, and step (2) increases
It is glycerine and trimethylolpropane to mould agent, and the additive amount of glycerine is 20%, and the additive amount of trimethylolpropane is 15%, hyperbranched
The additive amount of aromatic polyamide polymer is 0.2%, and the temperature after step (3) cooling is 50 DEG C, the quality of step (3) auxiliary agent
Score is 15%, and auxiliary agent is the mixture of n,N-Dimethylformamide and urea, n,N-Dimethylformamide and urine in mixture
The mass ratio of element is 5：1, the temperature of step (4) the first time drying is 50 DEG C, the temperature of step (5) second of drying
It is 50 DEG C.
Test example 1
The modified polyvinylalcohol that Examples 1 to 3 and comparative example 1~4 are prepared is compared, it is specific as shown in table 1.
The modified polyvinylalcohol performance comparison that 1 each embodiment and comparative example of table is prepared
Claims (10)
1. a kind of water dissolving type prilling process of modified polyvinylalcohol, which is characterized in that include the following steps：
(1) polyvinyl alcohol is added to the water, is dissolved by heating；
(2) plasticizer and hyperbranched aromatic polyamide polymer are sequentially added into step (1) acquired solution and are stirred；
(3) it after step (2) acquired solution cooling down, is sealed after auxiliary agent is added；
(4) after step (3) products therefrom being carried out first time drying, extruding pelletization；
(5) particle obtained by step (4) second is carried out to dry.
2. the water dissolving type prilling process of modified polyvinylalcohol according to claim 1, which is characterized in that molten obtained by step (1)
In liquid, the mass fraction of polyvinyl alcohol is 10~20%, and the temperature of the heating is 80~100 DEG C.
3. the water dissolving type prilling process of modified polyvinylalcohol according to claim 1, which is characterized in that step (2) described increasing
It is at least one of oiliness plasticizer and aqueous plasticizer to mould agent.
4. the water dissolving type prilling process of modified polyvinylalcohol according to claim 3, which is characterized in that the oiliness plasticizer
For glycerine, the aqueous plasticizer is trimethylolpropane.
5. the water dissolving type prilling process of modified polyvinylalcohol according to claim 3, which is characterized in that the addition of the glycerine
Amount is 2~20%, and the additive amount of the trimethylolpropane is 1~15%.
6. the water dissolving type prilling process of modified polyvinylalcohol according to claim 1, which is characterized in that step (2) is described super
The additive amount of branched aromatic polyamide polymer is 0.5~0.7%.
7. the water dissolving type prilling process of modified polyvinylalcohol according to claim 1, which is characterized in that step (3) described drop
The temperature of temperature is≤60 DEG C.
8. the water dissolving type prilling process of modified polyvinylalcohol according to claim 1, which is characterized in that step (3) is described to be helped
The mass fraction of agent is 3~15%, and the auxiliary agent is the mixture of n,N-Dimethylformamide and urea.
9. the water dissolving type prilling process of modified polyvinylalcohol according to claim 8, which is characterized in that N in the mixture,
The mass ratio of dinethylformamide and urea is (1~5)：1.
10. the water dissolving type prilling process of modified polyvinylalcohol according to claim 1, which is characterized in that step (4) described
The temperature of first drying is 40~60 DEG C, and the temperature of step (5) second of drying is 40~60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505293.7A CN108659424B (en) | 2018-05-24 | 2018-05-24 | Water-soluble granulation method of modified polyvinyl alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505293.7A CN108659424B (en) | 2018-05-24 | 2018-05-24 | Water-soluble granulation method of modified polyvinyl alcohol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108659424A true CN108659424A (en) | 2018-10-16 |
| CN108659424B CN108659424B (en) | 2021-03-05 |
Family
ID=63776507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810505293.7A Active CN108659424B (en) | 2018-05-24 | 2018-05-24 | Water-soluble granulation method of modified polyvinyl alcohol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108659424B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109456555A (en) * | 2018-12-03 | 2019-03-12 | 广东省生物工程研究所（广州甘蔗糖业研究所） | A kind of water-soluble polyvinyl alcohol film of blow molding and its preparation method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005073284A2 (en) * | 2004-01-28 | 2005-08-11 | The University Of Sheffield | Hyperbranched polymers |
| CN102432968A (en) * | 2011-10-12 | 2012-05-02 | 江苏博特新材料有限公司 | Modified polyvinyl alcohol and preparation method thereof |
| CN103724901A (en) * | 2014-01-03 | 2014-04-16 | 北京化工大学常州先进材料研究院 | Preparation method of fully degradable biological mulch film |
-
2018
- 2018-05-24 CN CN201810505293.7A patent/CN108659424B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005073284A2 (en) * | 2004-01-28 | 2005-08-11 | The University Of Sheffield | Hyperbranched polymers |
| CN102432968A (en) * | 2011-10-12 | 2012-05-02 | 江苏博特新材料有限公司 | Modified polyvinyl alcohol and preparation method thereof |
| CN103724901A (en) * | 2014-01-03 | 2014-04-16 | 北京化工大学常州先进材料研究院 | Preparation method of fully degradable biological mulch film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109456555A (en) * | 2018-12-03 | 2019-03-12 | 广东省生物工程研究所（广州甘蔗糖业研究所） | A kind of water-soluble polyvinyl alcohol film of blow molding and its preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108659424B (en) | 2021-03-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102234405B (en) | Water-resistant polyvinyl alcohol (PVA) film composition as well as fusion preparation method thereof | |
| CN102675804B (en) | Thermoplastic konjac glucomannan/graphene oxide compound material and preparation method thereof | |
| Xie et al. | Plasticizer combinations and performance of wood flour–poly (lactic acid) 3D printing filaments | |
| CN101565513B (en) | Heat stabilizer for producing PVA product and method for producing PVA product | |
| CN111349253B (en) | Modified lignin/PBS (Poly Butylene succinate) bioplastic film and preparation method thereof | |
| CN101157739A (en) | Method for preparing macromolecule material chain extender | |
| CN105542365A (en) | Modified PVA composite packaging film and preparation method thereof | |
| CN110079891A (en) | A kind of biodegradable PVA melt spinning resin and its application | |
| CN106432814B (en) | A kind of starch/polyethylene alcohol composite material and preparation method | |
| CN105440399A (en) | Polyvinyl wood-plastic composite and preparation method thereof | |
| CN108794769A (en) | A kind of preparation method of polylactic acid nano fiber/polyvinyl alcohol composite hydrogel | |
| CN113845766A (en) | Preparation method of polyoxyethylene water-soluble film | |
| CN101864184B (en) | Thermoplastic vegetable fiber/starch blending material and preparation method thereof | |
| CN102432968A (en) | Modified polyvinyl alcohol and preparation method thereof | |
| CN101190977A (en) | Starch-base completely biological degradation plastic | |
| CN108659424A (en) | A kind of water dissolving type prilling process of modified polyvinylalcohol | |
| CN115433441A (en) | Full-biodegradable material and preparation method thereof | |
| CN112852133B (en) | Anti-droplet PLA/PVA composite material and preparation method thereof | |
| US11130259B1 (en) | Device and method for online preparation of modified polylactic acid material with polylactic acid melt | |
| CN102617969B (en) | Preparation method of thermoplastic konjac glucomannan/poly butylenes succinate blending material | |
| CN103435753B (en) | Anti-stress cracking agent, preparation method and application thereof as well as anti-stress PC (Poly Carbonate) polyester | |
| CN116144187B (en) | Polylactic acid composite material and preparation method and application thereof | |
| CN103469678A (en) | Preparation method of recyclable coated paper | |
| CN102604293A (en) | Thermoplastically processable polyvinyl alcohol composite and preparation method thereof | |
| CN101864095A (en) | Thermoplastic konjac glucomannan/starch blending material and preparation method thereof |
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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190201 Address after: 655000 Qilin West Road 82, Qilin District, Qujing City, Yunnan Province Applicant after: Sun Xiaoyuan Address before: 410100 First Floor, C1 Building, Jinke Yida Science and Technology City, No. 77, South Section of Dongliu Road, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Applicant before: Hunan Zheng Xuan Biological Technology Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210408 Address after: 410000 Room 301, building B53, Jinke Yida science and Technology City, south section of Dongliu Road, Changsha Economic and Technological Development Zone, Hunan Province Patentee after: Hunan Juyi Xinchen Medical Technology Co.,Ltd. Address before: No.82 Qilin West Road, Qilin District, Qujing City, Yunnan Province Patentee before: Sun Xiaoyuan |