CN102134361B - Calcium sulfate whisker modified polyvinylalcohol composite material and preparation process thereof - Google Patents
Calcium sulfate whisker modified polyvinylalcohol composite material and preparation process thereof Download PDFInfo
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- CN102134361B CN102134361B CN2011101135854A CN201110113585A CN102134361B CN 102134361 B CN102134361 B CN 102134361B CN 2011101135854 A CN2011101135854 A CN 2011101135854A CN 201110113585 A CN201110113585 A CN 201110113585A CN 102134361 B CN102134361 B CN 102134361B
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- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 title claims abstract description 83
- 239000004372 Polyvinyl alcohol Substances 0.000 title claims abstract description 30
- 229920002451 polyvinyl alcohol Polymers 0.000 title claims abstract description 30
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 235000019422 polyvinyl alcohol Nutrition 0.000 title abstract 5
- 239000000203 mixture Substances 0.000 claims abstract description 31
- 239000000314 lubricant Substances 0.000 claims abstract description 23
- 238000001746 injection moulding Methods 0.000 claims abstract description 13
- 238000005469 granulation Methods 0.000 claims abstract description 7
- 230000003179 granulation Effects 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 239000013078 crystal Substances 0.000 claims description 19
- 239000004902 Softening Agent Substances 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000002351 wastewater Substances 0.000 claims description 13
- 238000005516 engineering process Methods 0.000 claims description 10
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 10
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000008188 pellet Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 5
- 239000012188 paraffin wax Substances 0.000 claims description 5
- 239000003549 soybean oil Substances 0.000 claims description 5
- 235000012424 soybean oil Nutrition 0.000 claims description 5
- BTURAGWYSMTVOW-UHFFFAOYSA-M sodium dodecanoate Chemical compound [Na+].CCCCCCCCCCCC([O-])=O BTURAGWYSMTVOW-UHFFFAOYSA-M 0.000 claims description 4
- 229940082004 sodium laurate Drugs 0.000 claims description 3
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 claims description 2
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims description 2
- 229940113162 oleylamide Drugs 0.000 claims description 2
- 239000004014 plasticizer Substances 0.000 abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 239000003607 modifier Substances 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 1
- 235000021355 Stearic acid Nutrition 0.000 description 3
- ULBTUVJTXULMLP-UHFFFAOYSA-N butyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCCC ULBTUVJTXULMLP-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 3
- 239000008117 stearic acid Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010010219 Compulsions Diseases 0.000 description 1
- 239000012296 anti-solvent Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Classifications
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a calcium sulfate whisker modified polyvinylalcohol composite material and a preparation process thereof. The composite material is prepared by the following materials according to part by weight: 70 to 90 portions of polyvinyl alcohol, 10 to 20 portions of calcium sulfate whisker with the diameter of 10 to 20 Mum, 1 to 3 portions of surface modifier, 1 to 5 portions of plasticizer, and 0.5 to 1.5 portions of lubricant. The preparation method comprises the following steps: adding the calcium sulfate whisker and the surface modifier to a high-speed mixer to mix for 5 to 15 minutes; then adding the polyvinyl alcohol, the plasticizer and the lubricant to the high-speed mixer to mix for 3 to 7 minutes; extruding the mixture from an equidirectional parallel double-screw extruder for granulation; and then conducting injection molding to the particles in an equidirectional parallel double-screw injection machine. The calcium sulfate whisker modified polyvinylalcohol composite material has high strength, low notch sensitivity, good thermal resistance and oxygen resistance, simple preparation process, and low cost, and is especially suitable for making products such as films and the like.
Description
Technical field
The present invention relates to a kind of polyvinyl alcohol composite material and preparation technology thereof, especially relate to a kind of calcium sulfate whisker modified polyvinyl alcohol composite material and preparation technology thereof.
Background technology
Z 150PH (PVA) is a kind of purposes high molecular weight water soluble polymer quite widely.It has good water-solubility, cohesive force, emulsifying property and performances such as remarkable grease resistance and anti-solvent, becomes fine film forming properties good, and the transparency of film is high, easy coloring, and resistance oxygen property, static resistance, toughness and chemical resistance are excellent.But the poor water resistance of PVA, water absorbability is big, the melt-processed difficulty, thermostability is low.After the moisture absorption, the intensity of PVA is merely 55%～60% of moisture absorption PVA intensity not, and the resistance oxygen property of film also descends.
Summary of the invention
The technical problem that the present invention will solve is, overcomes the deficiency of existing polyvinyl alcohol material, provides a kind of intensity high; Notch sensitivity is low; Thermotolerance and resistance oxygen property are good, and preparation technology is simple, calcium sulfate whisker modified polyvinyl alcohol composite material and preparation technology thereof that cost is low.
The present invention solve the technical problem the technical scheme that is adopted:
The present invention's calcium sulfate whisker modified polyvinyl alcohol composite material is processed by the raw material of following parts by weight: 70～90 parts of Z 150PH (PVA); Diameter is 10～20 parts of the calcium sulfate crystal whiskers of 10～20 μ m; 1～3 part of surface-modifying agent, 1～5 part in softening agent, 0.5～1.5 part of lubricant;
Said surface-modifying agent can be one or both the mixture in Triple Pressed Stearic Acid or the sodium laurate;
Said softening agent can be one or more the mixture in Witcizer 300 (DBP), DOP (DOP), the epoxy soybean oil;
Said lubricant can be one or more the mixture in paraffin, Triple Pressed Stearic Acid, butyl stearate, the oleylamide.
Preferred weight proportion is: 78 parts of Z 150PH, diameter are 15 parts of the calcium sulfate crystal whiskers of 10～20 μ m, 2 parts of surface-modifying agents, 4 parts in softening agent, 1 part of lubricant.
The preparation technology of the present invention's calcium sulfate whisker modified polyvinyl alcohol composite material comprises the steps:
(1) calcium sulfate crystal whiskers and surface-modifying agent are joined in the high-speed mixer, mix 5～15min (preferred 10min), get wastewaters with modified calcium sulfate whiskers;
(2) Z 150PH, softening agent and lubricant are joined in the high-speed mixer, mix 3～7 min (preferred 5min), get the mixture of Z 150PH, softening agent, lubricant and wastewaters with modified calcium sulfate whiskers;
(3) step (2) gained mixture is extruded in the cocurrent and parallel twin screw extruder, granulation, processing parameter is following: a district temperature 110-120 ℃ (preferred 115 ℃); Two district temperature 120-130 ℃ (preferred 125 ℃); Three district temperature 130-140 ℃ (preferred 135 ℃), four district temperature 130-140 ℃ (preferred 135 ℃), five district temperature 140-150 ℃ (preferred 145 ℃); Six district temperature 140-150 ℃ (preferred 145 ℃); Seven district temperature 130-140 ℃ (preferred 130 ℃), melt temperature 130-140 ℃ (preferred 135 ℃), head temperature 130-140 ℃ (preferred 130 ℃); Residence time 3-5min (preferred 4min), pressure 3-6MPa (preferred 4 MPa);
(4) with the injection moulding in cocurrent and parallel twin screw injection moulding machine of step (3) gained pellet; The Shooting Technique parameter is following: 140-150 ℃ of nozzle temperature (preferred 145 ℃); One section temperature 130-140 ℃ (preferred 135 ℃); Two sections temperature 130-140 ℃ (preferred 135 ℃), injection pressure 90-110MPa (preferred 100 MPa).
Calcium sulfate crystal whiskers is claimed crystal whisker of gypsum again, is a kind of fibrous single crystal of calcium sulfate.Research shows that the wastewaters with modified calcium sulfate whiskers of the present invention's use has uniform cross-sectional area, and complete internal structure, this characteristic are given its intensity near valence link between crystal theoretical value-atom.Because it has high intensity; Trickle size is prone to and the PVA interfacial adhesion, improves consistency and interface cohesive force with matrix; When receiving the foreign compulsion orientation; Unrelieved stress among the PVA can pass to calcium sulfate crystal whiskers well, thereby improves the intensity of PVA, and the PVA notch sensitivity is reduced greatly.Because calcium sulfate crystal whiskers is an inorganics, in PVA matrix, be uniformly dispersed, be difficult for reuniting, make composite property stable.
The present invention's calcium sulfate whisker modified polyvinyl alcohol composite material intensity is high, and notch sensitivity is low, and thermotolerance and resistance oxygen property are good, and preparation technology is simple, and cost is low, is particularly suitable for making the film series products.
Embodiment
Below in conjunction with embodiment the present invention is done further explain.
Embodiment 1
The calcium sulfate whisker modified polyvinyl alcohol composite material of present embodiment is processed by the raw material of following parts by weight: 83 parts of Z 150PH, diameter are 10 parts of the calcium sulfate crystal whiskers of 10～20 μ m, 2 parts of surface-modifying agent Triple Pressed Stearic Acid, 4 parts of Plasticizer DBP, 1 part in lubricant paraffin.
The preparation method:
(1) calcium sulfate crystal whiskers and surface-modifying agent Triple Pressed Stearic Acid are joined in the high-speed mixer, mix 10min, get wastewaters with modified calcium sulfate whiskers;
(2) Z 150PH, Plasticizer DBP and lubricant paraffin are joined in the high-speed mixer, mix 5 min, get the mixture of Z 150PH, Plasticizer DBP, lubricant paraffin and wastewaters with modified calcium sulfate whiskers;
(3) step (2) gained mixture is extruded in the cocurrent and parallel twin screw extruder, granulation, processing parameter is following: 115 ℃ of district's temperature, 125 ℃ of two district's temperature; 135 ℃ of three district's temperature, 135 ℃ of four district's temperature, 145 ℃ of five district's temperature; 145 ℃ of six district's temperature, 130 ℃ of seven district's temperature, 135 ℃ of melt temperatures; 130 ℃ of head temperatures, residence time 4min, pressure 4MPa;
(4) with the injection moulding in cocurrent and parallel twin screw injection moulding machine of step (3) gained pellet, the Shooting Technique parameter is following: 145 ℃ of nozzle temperature, 135 ℃ of one section temperature, 135 ℃ of two sections temperature, injection pressure 100MPa.
Present embodiment product performance detection method standard and result data are seen table 1.
Embodiment 2
The calcium sulfate whisker modified polyvinyl alcohol composite material of present embodiment is processed by the raw material of following parts by weight: 78 parts of Z 150PH; Diameter is 15 parts of the calcium sulfate crystal whiskers of 10～20 μ m; 2 parts of surface-modifying agent sodium laurates, 4 parts of plasticizer DOPs, 1 part of lubricant stearic acid.
The preparation method:
(1) calcium sulfate crystal whiskers and surface-modifying agent sodium laurate are joined in the high-speed mixer, mix 10min, get wastewaters with modified calcium sulfate whiskers;
(2) Z 150PH, plasticizer DOP and lubricant stearic acid are joined in the high-speed mixer, mix 5 min, get the mixture of Z 150PH, plasticizer DOP, lubricant stearic acid and wastewaters with modified calcium sulfate whiskers;
(3) step (2) gained mixture is extruded in the cocurrent and parallel twin screw extruder, granulation, processing parameter is following: 115 ℃ of district's temperature, 125 ℃ of two district's temperature; 135 ℃ of three district's temperature, 135 ℃ of four district's temperature, 145 ℃ of five district's temperature; 145 ℃ of six district's temperature, 130 ℃ of seven district's temperature, 135 ℃ of melt temperatures; 130 ℃ of head temperatures, residence time 4min, pressure 4MPa;
(4) with the injection moulding in cocurrent and parallel twin screw injection moulding machine of step (3) gained pellet, the Shooting Technique parameter is following: 145 ℃ of nozzle temperature, 135 ℃ of one section temperature, 135 ℃ of two sections temperature, injection pressure 100MPa.
Present embodiment product performance detection method standard and result data are seen table 1.
Embodiment 3
The calcium sulfate whisker modified polyvinyl alcohol composite material of present embodiment is processed by the raw material of following parts by weight: 73 parts of Z 150PH; Diameter is 20 parts of the calcium sulfate crystal whiskers of 10～20 μ m; 2 parts of surface-modifying agent Triple Pressed Stearic Acid, 4 parts of softening agent epoxy soybean oils, 1 part of lubricant stearic acid butyl ester.
The preparation method:
(1) calcium sulfate crystal whiskers and surface-modifying agent Triple Pressed Stearic Acid are joined in the high-speed mixer, mix 10min, get wastewaters with modified calcium sulfate whiskers;
(2) Z 150PH, softening agent epoxy soybean oil and lubricant stearic acid butyl ester are joined in the high-speed mixer, mix 5 min, get the mixture of Z 150PH, softening agent epoxy soybean oil, lubricant stearic acid butyl ester and wastewaters with modified calcium sulfate whiskers;
(3) step (2) gained mixture is extruded in the cocurrent and parallel twin screw extruder, granulation, processing parameter is following: 115 ℃ of district's temperature, 125 ℃ of two district's temperature; 135 ℃ of three district's temperature, 135 ℃ of four district's temperature, 145 ℃ of five district's temperature; 145 ℃ of six district's temperature, 130 ℃ of seven district's temperature, 135 ℃ of melt temperatures; 130 ℃ of head temperatures, residence time 4min, pressure 4MPa;
(4) with the injection moulding in cocurrent and parallel twin screw injection moulding machine of step (3) gained pellet, the Shooting Technique parameter is following: 145 ℃ of nozzle temperature, 135 ℃ of one section temperature, 135 ℃ of two sections temperature, injection pressure 100MPa.
Present embodiment product performance detection method standard and result data are seen table 1.
Claims (4)
1. a calcium sulfate whisker modified polyvinyl alcohol composite material is characterized in that, is processed by the raw material of following parts by weight: 70～90 parts of Z 150PH; Diameter is 10～20 parts of the calcium sulfate crystal whiskers of 10～20 μ m; 1～3 part of surface-modifying agent, 1～5 part in softening agent, 0.5～1.5 part of lubricant;
Said surface-modifying agent is one or both the mixture in Triple Pressed Stearic Acid or the sodium laurate;
Said softening agent is one or more the mixture in Witcizer 300, DOP, the epoxy soybean oil;
Said lubricant is one or more the mixture in paraffin, butyl stearate, the oleylamide.
2. calcium sulfate whisker modified polyvinyl alcohol composite material according to claim 1 is characterized in that, is processed by the raw material of following parts by weight: 78 parts of Z 150PH; Diameter is 15 parts of the calcium sulfate crystal whiskers of 10～20 μ m; 2 parts of surface-modifying agents, 4 parts in softening agent, 1 part of lubricant.
3. the preparation technology of a calcium sulfate whisker modified polyvinyl alcohol composite material according to claim 1 or claim 2 is characterized in that, may further comprise the steps:
(1) calcium sulfate crystal whiskers and surface-modifying agent are joined in the high-speed mixer, mix 5～15min, get wastewaters with modified calcium sulfate whiskers;
(2) Z 150PH, softening agent and lubricant are joined in the high-speed mixer, mix 3～7 min, get the mixture of Z 150PH, softening agent, lubricant and wastewaters with modified calcium sulfate whiskers;
(3) step (2) gained mixture is extruded in the cocurrent and parallel twin screw extruder, granulation, processing parameter is following: a district temperature 110-120 ℃, two district temperature 120-130 ℃; Three district temperature 130-140 ℃, four district temperature 130-140 ℃, five district temperature 140-150 ℃; Six district temperature 140-150 ℃, seven district temperature 130-140 ℃, melt temperature 130-140 ℃; Head temperature 130-140 ℃, residence time 3-5min, pressure 3-6MPa;
(4) with the injection moulding in cocurrent and parallel twin screw injection moulding machine of step (3) gained pellet, the Shooting Technique parameter is following: 140-150 ℃ of nozzle temperature, one section temperature 130-140 ℃, two sections temperature 130-140 ℃, injection pressure 90-110MPa.
4. the preparation technology of calcium sulfate whisker modified polyvinyl alcohol composite material according to claim 3 is characterized in that, may further comprise the steps:
(1) calcium sulfate crystal whiskers and surface-modifying agent are joined in the high-speed mixer, mix 10min, get wastewaters with modified calcium sulfate whiskers;
(2) Z 150PH, softening agent and lubricant are joined in the high-speed mixer, mix 5min, get the mixture of Z 150PH, softening agent, lubricant and wastewaters with modified calcium sulfate whiskers;
(3) step (2) gained mixture is extruded in the cocurrent and parallel twin screw extruder, granulation, processing parameter is following: 115 ℃ of district's temperature, 125 ℃ of two district's temperature; 135 ℃ of three district's temperature, 135 ℃ of four district's temperature, 145 ℃ of five district's temperature; 145 ℃ of six district's temperature, 130 ℃ of seven district's temperature, 135 ℃ of melt temperatures; 130 ℃ of head temperatures, residence time 4min, pressure 4MPa;
(4) with the injection moulding in cocurrent and parallel twin screw injection moulding machine of step (3) gained pellet, the Shooting Technique parameter is following: 145 ℃ of nozzle temperature, 135 ℃ of one section temperature, 135 ℃ of two sections temperature, injection pressure 100MPa.
Priority Applications (1)
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| CN2011101135854A CN102134361B (en) | 2011-05-04 | 2011-05-04 | Calcium sulfate whisker modified polyvinylalcohol composite material and preparation process thereof |
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| CN2011101135854A CN102134361B (en) | 2011-05-04 | 2011-05-04 | Calcium sulfate whisker modified polyvinylalcohol composite material and preparation process thereof |
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| CN102134361B true CN102134361B (en) | 2012-06-20 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103046153B (en) * | 2012-11-26 | 2014-08-06 | 浙江理工大学 | Preparation method of polyvinyl acetal negative oxygen ion fibers |
| CN103408877B (en) * | 2013-08-23 | 2015-08-26 | 江苏大学 | A kind of method utilizing α-hemihydrate calcium sulfate crystal whisker flame retarded polymeric material |
| WO2015085236A1 (en) * | 2013-12-06 | 2015-06-11 | Flint Hills Resources, Lp | Gypsum composite modifiers |
| US10280288B2 (en) | 2013-12-06 | 2019-05-07 | Georgia-Pacific Gypsum Llc | Calcium sulfate crystals and methods for making the same |
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| CN101434773A (en) * | 2007-11-15 | 2009-05-20 | 马海涛 | Anti-corrosive construction coating |
| CN101434771A (en) * | 2007-11-15 | 2009-05-20 | 于士井 | Waterproof anticracking construction exterior wall paint |
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2011
- 2011-05-04 CN CN2011101135854A patent/CN102134361B/en active Active
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|---|---|---|---|---|
| JP2003238227A (en) * | 2002-02-20 | 2003-08-27 | Kuraray Co Ltd | Gypsum composition |
| CN101396600A (en) * | 2007-09-30 | 2009-04-01 | 江门市宝德利水溶性塑料有限公司 | Water soluble biological degradation type golf balls and preparation method thereof |
| CN101423687A (en) * | 2007-10-29 | 2009-05-06 | 李一民 | Interior wall coating with sterilization function |
| CN101434773A (en) * | 2007-11-15 | 2009-05-20 | 马海涛 | Anti-corrosive construction coating |
| CN101434771A (en) * | 2007-11-15 | 2009-05-20 | 于士井 | Waterproof anticracking construction exterior wall paint |
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