CN103600476B - A kind of preparation technology of paper grade (stock) Polyphenylene sulfide millstone - Google Patents
A kind of preparation technology of paper grade (stock) Polyphenylene sulfide millstone Download PDFInfo
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- CN103600476B CN103600476B CN201310598418.2A CN201310598418A CN103600476B CN 103600476 B CN103600476 B CN 103600476B CN 201310598418 A CN201310598418 A CN 201310598418A CN 103600476 B CN103600476 B CN 103600476B
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
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- 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
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/02—Polythioethers; Polythioether-ethers
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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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76551—Time
- B29C2945/76561—Time duration
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76595—Velocity
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76822—Phase or stage of control
- B29C2945/76869—Mould clamping, compression of the cavity
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
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- Injection Moulding Of Plastics Or The Like (AREA)
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- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a kind of preparation technology of paper grade (stock) Polyphenylene sulfide millstone, described Polyphenylene sulfide millstone adopts polyphenyl thioether composite material to make, described polyphenyl thioether composite material comprises following raw material: polyphenylene sulfide, toughening element, fortifying fibre, wear resistant components, non-fiber auxiliary agent, and described preparation technology comprises the following steps: the pre-treatment of S1. material; S2. batching and batch mixing; S3. preheating and drying; S4. plastify; S5. injection filling mould; S6. pressurize; S7. cool; S8. the demoulding and post processing.This technological process is simple, and be easy to machine-shaping, have the advantage that cost is low, reduce energy consumption, the noise of the Polyphenylene sulfide millstone prepared by the inventive method is little, corrosive medium wide, long service life, effectively can improve paper machine speed, thus improve papermaking output.
Description
Technical field
The invention belongs to material engineering field, be specifically related to a kind of preparation technology of paper grade (stock) Polyphenylene sulfide millstone.
Background technology
As everyone knows, in papermaking pulping system, this link of pulling an oar is most important.In papermaking equipment, most important machinery is exactly fiberizer, it produce whole paper-making industry basic-paper pulp, and in fiberizer, the performance of mill decides the key factor of whole paper production line running status, production efficiency, enterprise profit and product quality.Abrasive disk of stuff grinder completely to form (or become rotor and stator is complete form) by movable grinding disc and fixed millstone, by matrix and stationary distribution, the roll flute on matrix combines each mill again, Relative friction motion is done under High Rotation Speed state, paper pulp fiber is cut off, opens, make fiber be the distribution of multi-fork broom shape, thus obtain good paper strength.Owing to not only crude fibre being become fine fibre by keen edge when mill works, and kneading open flowing through middle paper pulp by powerful mill extruding force, together with making to be cross-linked between fiber with fiber, reaching the object improving pulp strength.The making beating mill material of current internal and international usual employing is metal species, but because metal material hardness is far above papermaking string, mill is large to papermaking string cutting action, and wire-dividing broom purification effect is little, paper strength is low, thus limits the use value of plant fiber material; And the special requirement of some paper kind can not be met, as capacitor insulated paper simultaneously; And metal grinding table is by high temperature cast molding, and smelting temperature is up to more than 1300 DEG C, and energy consumption is huge.Whole technique needs through mould preparation, pressure wax, delivery, wax-pattern finishing, wax pattern assemblies, shell processed, boils wax, casts and shake shell and finishing of castings stage.Casting die cost is high, the life-span is short, and whole technique cost is large, speed of production is slow, complex process and energy resource consumption is serious, is unfavorable for environmental protection.
Chinese patent CN2118083U discloses a kind of Plastic disc mill, relate to papermaking making beating specific purpose tool, the particularly matching used Plastic disc mill with disc pulping machine, rounded plate-like, there is a circular hole centre, annulus there is installing hole around, entirety is divided into metal tray and grinding stone two large divisions, grinding stone is made of plastics the block block that surface becomes porous multiple-grooved shape, although have lightweight, significantly can reduce power consumption, long service life, noise is little, and the advantage of fibre length can be protected in defibrination process, but this kind of Plastic disc mill is common Plastic disc mill, mill performance is low, and still have certain cutting action to fiber, not remarkable to the improved action of physical property of pulp.
Chinese patent CN1044687A discloses a kind of MC nylon grinding disc for paper-making, and be the mill adopting engineering plastics MC nylon to manufacture paper industry mill adapted, mill manufacture can adopt processing and casting.Although it is higher to have making beating efficiency, pulp quality is better, production obvious energy conservation, little, the lightweight advantage of noiselessness, equipment volume, but MC nylon engineering plastic can not solve the heat endurance of material, MC nylon mill when defibrination temperature is more than 120 DEG C starts softening transform, greatly reduces the characteristic of engineering plastics and the service life of mill.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, provide a kind of preparation technology of paper grade (stock) Polyphenylene sulfide millstone, this technological process is simple, is easy to machine-shaping, has the advantage that cost is low, reduce energy consumption.
Object of the present invention is achieved through the following technical solutions: a kind of preparation technology of paper grade (stock) Polyphenylene sulfide millstone, described Polyphenylene sulfide millstone adopts polyphenyl thioether composite material to make, described polyphenyl thioether composite material comprises following raw material: polyphenylene sulfide, toughening element, fortifying fibre, wear resistant components, non-fiber auxiliary agent, and described preparation technology comprises the following steps:
The pre-treatment of S1. expecting: surface modification is carried out to toughening element, fortifying fibre, wear resistant components, non-fiber auxiliary agent;
S2. batching and batch mixing: take each raw material by formula rate, with agitator, the raw material prepared fully is mixed; Wherein, filling a prescription is: the polyphenylene sulfide of 30 ~ 70wt%, the toughening element of 5 ~ 10wt%, the fortifying fibre of 20 ~ 50wt%, the wear resistant components of 0 ~ 20wt%, the non-fiber auxiliary agent of 0 ~ 30wt%;
S3. preheating and drying: the raw material mixed in step S2 is carried out drying in the temperature of 100 ~ 150 DEG C, drying time >30min; Wherein, described drying mode is convection type drying, vacuum drying or infra-red drying;
S4. plastify: screw injection molding machine barrel each section of temperature is set respectively, the raw material after preheating and drying in step S3 is added in the screw injection molding machine setting temperature and plastify 5 ~ 10min, uniform melt must be plastified;
S5. injection filling mould: uniform melt injection filling mould will be plastified in step S4, and be full of die cavity; Wherein, the condition of injection filling mould is: nozzle temperature 250 ~ 320 DEG C, mold temperature 150 ~ 250 DEG C, injection pressure 150 ~ 300MPa, mould-filling time 5 ~ 60s, screw speed 120 ~ 200rad/min, clamp force 500 ~ 1000T;
S6. pressurize: after injection filling mould, screw rod still keeps pressurized state, pressurize 20 ~ 60s;
S7. cool: cool colloid in mould, cooling condition is: after Jiao Kou freezes, cool 10 ~ 20min;
S8. the demoulding and post processing: cooled colloid is carried out the demoulding, the process of demoulding after annealing, annealing temperature is 100 ~ 250 DEG C, then carries out deburring, burr, surface finish, obtained paper grade (stock) Polyphenylene sulfide millstone.
The present invention has the following advantages:
1. present invention process method is injection molding process, the raw material making mill is polyphenylene sulfide, the excellent processability of polyphenylene sulfide, good fluidity, the injection moulding of thin-walled, long flow process can be carried out, compared with conventional metals mill manufacture craft, there is technological process simple, be easy to machine-shaping, and the characteristic that cost is low.
2. polyphenylene sulfide has light weight, intensity is high, rigidity is high characteristic, and its density is generally 1/5th of density metal, and the corrosive medium therefore adapted to is wide, long service life; And the elastic modelling quantity of polyphenylene sulfide and string modulus closer to, little to papermaking string cutting action, wire-dividing broom purification effect is large, and therefore, paper strength is high, paper product good, drainability is good, effectively can improve paper machine speed, thus improves papermaking output.
3. the noise that produces of conventional metals mill defibrination is huge, and entail dangers to operator healthy also disturbs residents, and cause environmental protection dispute, the Polyphenylene sulfide millstone prepared by the inventive method can significantly reduce defibrination noise pollution; In energy-conservation, compared with using with conventional metals mill specification of the same race, Polyphenylene sulfide millstone prepared by the inventive method can be saved power consumption and be reached about 40%.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described, and protection scope of the present invention is not limited to the following stated:
Embodiment 1: a kind of preparation technology of paper grade (stock) Polyphenylene sulfide millstone, described Polyphenylene sulfide millstone adopts polyphenyl thioether composite material to make, described polyphenyl thioether composite material comprises following raw material: polyphenylene sulfide, toughening element, fortifying fibre, wear resistant components, and described preparation technology comprises the following steps:
The pre-treatment of S1. expecting: surface modification is carried out to toughening element, fortifying fibre, wear resistant components; Toughening element is one or more in polyamide, mylar, polyacrylic resin; Fortifying fibre is one or more in glass fibre, carbon fiber, aramid fiber; Wear resistant components is one or more in polytetrafluoroethylene (PTFE), graphite, molybdenum bisuphide;
S2. batching and batch mixing: take each raw material by formula rate, with agitator, the raw material prepared fully is mixed; Wherein, filling a prescription is: the polyphenylene sulfide of 30wt%, the toughening element of 5wt%, the fortifying fibre of 50wt%, 15wt% wear resistant components;
S3. preheating and drying: the raw material mixed in step S2 is carried out convection type drying, dry 35min in the temperature of 100 DEG C;
S4. plastify: arranging screw injection molding machine barrel each section of temperature is respectively: first paragraph: 250 DEG C, second segment: 270 DEG C, 3rd section: 290 DEG C, 4th section: 310 DEG C, 5th section: 310 DEG C, raw material after preheating and drying in step S3 is added in the screw injection molding machine setting temperature and plastifies 5min, uniform melt must be plastified;
S5. injection filling mould: uniform melt injection filling mould will be plastified in step S4, and be full of die cavity; Wherein, the condition of injection filling mould is: nozzle temperature 250 DEG C, mold temperature 150 DEG C, injection pressure 150MPa, mould-filling time 5s, screw speed 120rad/min, clamp force 500T;
S6. pressurize: after injection filling mould, screw rod still keeps pressurized state, pressurize 20s;
S7. cool: cool colloid in mould, cooling condition is: after Jiao Kou freezes, cool 10min;
S8. the demoulding and post processing: cooled colloid is carried out the demoulding, the process of demoulding after annealing, annealing temperature is 100 DEG C, then carries out deburring, burr, surface finish, obtained paper grade (stock) Polyphenylene sulfide millstone.
Embodiment 2: a kind of preparation technology of paper grade (stock) Polyphenylene sulfide millstone, described Polyphenylene sulfide millstone adopts polyphenyl thioether composite material to make, described polyphenyl thioether composite material comprises following raw material: polyphenylene sulfide, toughening element, fortifying fibre, wear resistant components, and described preparation technology comprises the following steps:
The pre-treatment of S1. expecting: surface modification is carried out to toughening element, fortifying fibre, wear resistant components; Toughening element is one or more in polyamide, mylar, polyacrylic resin; Fortifying fibre is one or more in glass fibre, carbon fiber, aramid fiber; Wear resistant components is one or more in polytetrafluoroethylene (PTFE), graphite, molybdenum bisuphide;
S2. batching and batch mixing: take each raw material by formula rate, with agitator, the raw material prepared fully is mixed; Wherein, filling a prescription is: the polyphenylene sulfide of 40wt%, the toughening element of 7.5wt%, the fortifying fibre of 32.5wt%, the wear resistant components of 20wt%;
S3. preheating and drying: the raw material mixed in step S2 is carried out vacuum drying, dry 48min in the temperature of 150 DEG C;
S4. plastify: arranging screw injection molding machine barrel each section of temperature is respectively: first paragraph: 250 DEG C, second segment: 270 DEG C, 3rd section: 290 DEG C, 4th section: 310 DEG C, 5th section: 290 DEG C, raw material after preheating and drying in step S3 is added in the screw injection molding machine setting temperature and plastifies 10min, uniform melt must be plastified;
S5. injection filling mould: uniform melt injection filling mould will be plastified in step S4, and be full of die cavity; Wherein, the condition of injection filling mould is: nozzle temperature 320 DEG C, mold temperature 250 DEG C, injection pressure 300MPa, mould-filling time 60s, screw speed 200rad/min, clamp force 1000T.
S6. pressurize: after injection filling mould, screw rod still keeps pressurized state, pressurize 60s;
S7. cool: cool colloid in mould, cooling condition is: after Jiao Kou freezes, cool 20min;
S8. the demoulding and post processing: cooled colloid is carried out the demoulding, the process of demoulding after annealing, annealing temperature is 250 DEG C, then carries out deburring, burr, surface finish, obtained paper grade (stock) Polyphenylene sulfide millstone.
Embodiment 3: a kind of preparation technology of paper grade (stock) Polyphenylene sulfide millstone, described Polyphenylene sulfide millstone adopts polyphenyl thioether composite material to make, described polyphenyl thioether composite material comprises following raw material: polyphenylene sulfide, toughening element, fortifying fibre, wear resistant components, and described preparation technology comprises the following steps:
The pre-treatment of S1. expecting: surface modification is carried out to toughening element, fortifying fibre, wear resistant components; Toughening element is one or more in polyamide, mylar, polyacrylic resin; Fortifying fibre is one or more in glass fibre, carbon fiber, aramid fiber; Wear resistant components is one or more in polytetrafluoroethylene (PTFE), graphite, molybdenum bisuphide;
S2. batching and batch mixing: take each raw material by formula rate, with agitator, the raw material prepared fully is mixed; Wherein, filling a prescription is: the polyphenylene sulfide of 50wt%, the toughening element of 8wt%, the fortifying fibre of 28wt%, the wear resistant components of 14wt%;
S3. preheating and drying: the raw material mixed in step S2 is carried out infra-red drying, dry 60min in the temperature of 120 DEG C;
S4. plastify: arranging screw injection molding machine barrel each section of temperature is respectively: first paragraph: 250 DEG C, second segment: 270 DEG C, 3rd section: 290 DEG C, 4th section: 310 DEG C, 5th section: 300 DEG C, raw material after preheating and drying in step S3 is added in the screw injection molding machine setting temperature and plastifies 6min, uniform melt must be plastified;
S5. injection filling mould: uniform melt injection filling mould will be plastified in step S4, and be full of die cavity; Wherein, the condition of injection filling mould is: nozzle temperature 260 DEG C, mold temperature 180 DEG C, injection pressure 200MPa, mould-filling time 10s, screw speed 140rad/min, clamp force 650T;
S6. pressurize: after injection filling mould, screw rod still keeps pressurized state, pressurize 30s;
S7. cool: cool colloid in mould, cooling condition is: after Jiao Kou freezes, cool 13min;
S8. the demoulding and post processing: cooled colloid is carried out the demoulding, the process of demoulding after annealing, annealing temperature is 120 DEG C, then carries out deburring, burr, surface finish, obtained paper grade (stock) Polyphenylene sulfide millstone.
Embodiment 4: a kind of preparation technology of paper grade (stock) Polyphenylene sulfide millstone, described Polyphenylene sulfide millstone adopts polyphenyl thioether composite material to make, described polyphenyl thioether composite material comprises following raw material: polyphenylene sulfide, toughening element, fortifying fibre, wear resistant components, and described preparation technology comprises the following steps:
The pre-treatment of S1. expecting: surface modification is carried out to toughening element, fortifying fibre, wear resistant components; Toughening element is one or more in polyamide, mylar, polyacrylic resin; Fortifying fibre is one or more in glass fibre, carbon fiber, aramid fiber; Wear resistant components is one or more in polytetrafluoroethylene (PTFE), graphite, molybdenum bisuphide;
S2. batching and batch mixing: take each raw material by formula rate, with agitator, the raw material prepared fully is mixed; Wherein, filling a prescription is: the polyphenylene sulfide of 60wt%, the toughening element of 6wt%, the fortifying fibre of 25wt%, 9wt% wear resistant components;
S3. preheating and drying: the raw material mixed in step S2 is carried out vacuum drying, dry 50min in the temperature of 135 DEG C;
S4. plastify: arranging screw injection molding machine barrel each section of temperature is respectively: first paragraph: 270 DEG C, second segment: 280 DEG C, 3rd section: 290 DEG C, 4th section: 300 DEG C, 5th section: 310 DEG C, raw material after preheating and drying in step S3 is added in the screw injection molding machine setting temperature and plastifies 8min, uniform melt must be plastified;
S5. injection filling mould: uniform melt injection filling mould will be plastified in step S4, and be full of die cavity; Wherein, the condition of injection filling mould is: nozzle temperature 290 DEG C, mold temperature 185 DEG C, injection pressure 200MPa, mould-filling time 25s, and screw speed is 150rad/min, and clamp force is 750T;
S6. pressurize: after injection filling mould, screw rod still keeps pressurized state, pressurize 35s;
S7. cool: cool colloid in grinding tool, cooling condition is: after Jiao Kou freezes, cool 15min;
S8. the demoulding and post processing: cooled colloid is carried out the demoulding, the process of demoulding after annealing, annealing temperature is 150 DEG C, then carries out deburring, burr, surface finish, obtained paper grade (stock) Polyphenylene sulfide millstone.
Embodiment 5: a kind of preparation technology of paper grade (stock) Polyphenylene sulfide millstone, described Polyphenylene sulfide millstone adopts polyphenyl thioether composite material to make, described polyphenyl thioether composite material comprises following raw material: polyphenylene sulfide, toughening element, fortifying fibre, and described preparation technology comprises the following steps:
The pre-treatment of S1. expecting: surface modification is carried out to toughening element, fortifying fibre; Toughening element is one or more in polyamide, mylar, polyacrylic resin; Fortifying fibre is one or more in glass fibre, carbon fiber, aramid fiber;
S2. batching and batch mixing: take each raw material by formula rate, with agitator, the raw material prepared fully is mixed; Wherein, filling a prescription is: the polyphenylene sulfide of 70wt%, the toughening element of 10wt%, the fortifying fibre of 20wt%;
S3. preheating and drying: the raw material mixed in step S2 is carried out convection type drying, dry 45min in the temperature of 140 DEG C;
S4. plastify: arranging screw injection molding machine barrel each section of temperature is respectively: first paragraph: 280 DEG C, second segment: 285 DEG C, 3rd section: 290 DEG C, 4th section: 2900 DEG C, 5th section: 300 DEG C, raw material after preheating and drying in step S3 is added in the screw injection molding machine setting temperature and plastifies 8min, uniform melt must be plastified;
S5. injection filling mould: uniform melt injection filling mould will be plastified in step S4, and be full of die cavity; Wherein, the condition of injection filling mould is: nozzle temperature 300 DEG C, mold temperature 200 DEG C, injection pressure 260MPa, mould-filling time 50s, screw speed 180rad/min, and clamp force is 900T;
S6. pressurize: after injection filling mould, screw rod still keeps pressurized state, pressurize 50s;
S7. cool: cool colloid in mould, cooling condition is: after Jiao Kou freezes, cool 18min;
S8. the demoulding and post processing: cooled colloid is carried out the demoulding, the process of demoulding after annealing, annealing temperature is 220 DEG C, then carries out deburring, burr, surface finish, obtained paper grade (stock) Polyphenylene sulfide millstone.
Embodiment 6: a kind of preparation technology of paper grade (stock) Polyphenylene sulfide millstone, described Polyphenylene sulfide millstone adopts polyphenyl thioether composite material to make, described polyphenyl thioether composite material comprises following raw material: polyphenylene sulfide, toughening element, fortifying fibre, wear resistant components, non-fiber auxiliary agent, and described preparation technology comprises the following steps:
The pre-treatment of S1. expecting: surface modification is carried out to toughening element, fortifying fibre, wear resistant components, non-fiber auxiliary agent; Toughening element is one or more in polyamide, mylar, polyacrylic resin; Fortifying fibre is one or more in glass fibre, carbon fiber, aramid fiber; Wear resistant components is one or more in polytetrafluoroethylene (PTFE), graphite, molybdenum bisuphide; Non-fiber auxiliary agent is one or more in boron nitride, graphite, silica, barium sulfate, titanium oxide, carbon black, zinc oxide, calcium sulfate;
S2. batching and batch mixing: take each raw material by formula rate, with agitator, the raw material prepared fully is mixed; Wherein, filling a prescription is: the polyphenylene sulfide of 35wt%, the toughening element of 10wt%, the fortifying fibre of 35wt%, 10wt% wear resistant components, 10wt% non-fiber auxiliary agent;
S3. preheating and drying: the raw material mixed in step S2 is carried out infra-red drying, dry 75min in the temperature of 145 DEG C;
S4. plastify: arranging screw injection molding machine barrel each section of temperature is respectively: first paragraph: 270 DEG C, second segment: 280 DEG C, 3rd section: 290 DEG C, 4th section: 300 DEG C, 5th section: 290 DEG C, raw material after preheating and drying in step S3 is added in the screw injection molding machine setting temperature and plastifies 7min, uniform melt must be plastified;
S5. injection filling mould: uniform melt injection filling mould will be plastified in step S4, and be full of die cavity; Wherein, the condition of injection filling mould is: nozzle temperature 310 DEG C, mold temperature 250 DEG C, injection pressure 180MPa, mould-filling time 55s, screw speed 200rad/min, clamp force 500T;
S6. pressurize: after injection filling mould, screw rod still keeps pressurized state, pressurize 48s;
S7. cool: cool colloid in mould, cooling condition is: after Jiao Kou freezes, cool 12min;
S8. the demoulding and post processing: cooled colloid is carried out the demoulding, the process of demoulding after annealing, annealing temperature is 130 DEG C, then carries out deburring, burr, surface finish, obtained paper grade (stock) Polyphenylene sulfide millstone.
Embodiment 7: a kind of preparation technology of paper grade (stock) Polyphenylene sulfide millstone, described Polyphenylene sulfide millstone adopts polyphenyl thioether composite material to make, described polyphenyl thioether composite material comprises following raw material: polyphenylene sulfide, toughening element, fortifying fibre, wear resistant components, non-fiber auxiliary agent, and described preparation technology comprises the following steps:
The pre-treatment of S1. expecting: surface modification is carried out to toughening element, fortifying fibre, wear resistant components, non-fiber auxiliary agent; Toughening element is one or more in polyamide, mylar, polyacrylic resin; Fortifying fibre is one or more in glass fibre, carbon fiber, aramid fiber; Wear resistant components is one or more in polytetrafluoroethylene (PTFE), graphite, molybdenum bisuphide; Non-fiber auxiliary agent is one or more in boron nitride, graphite, silica, barium sulfate, titanium oxide, carbon black, zinc oxide, calcium sulfate;
S2. batching and batch mixing: take each raw material by formula rate, with agitator, the raw material prepared fully is mixed; Wherein, filling a prescription is: the polyphenylene sulfide of 35wt%, the toughening element of 10wt%, the fortifying fibre of 20wt%, the wear resistant components of 5wt%, the non-fiber auxiliary agent of 30wt%;
S3. preheating and drying: the raw material mixed in step S2 is carried out vacuum drying, dry 60min in the temperature of 150 DEG C;
S4. plastify: arranging screw injection molding machine barrel each section of temperature is respectively: first paragraph: 290 DEG C, second segment: 295 DEG C, 3rd section: 300 DEG C, 4th section: 300 DEG C, 5th section: 290 DEG C, raw material after preheating and drying in step S3 is added in the screw injection molding machine setting temperature and plastifies 10min, uniform melt must be plastified;
S5. injection filling mould: uniform melt injection filling mould will be plastified in step S4, and be full of die cavity; Wherein, the condition of injection filling mould is: nozzle temperature 300 DEG C, mold temperature 230 DEG C, injection pressure 280MPa, mould-filling time 45s, screw speed 125rad/min, clamp force 500T;
S6. pressurize: after injection filling mould, screw rod still keeps pressurized state, pressurize 60s;
S7. cool: cool colloid in mould, cooling condition is: after Jiao Kou freezes, cool 11min;
S8. the demoulding and post processing: cooled colloid is carried out the demoulding, the process of demoulding after annealing, annealing temperature is 230 DEG C, then carries out deburring, burr, surface finish, obtained paper grade (stock) Polyphenylene sulfide millstone.
Following table is that present invention process compares data with the parameter of conventional metals mill production technology, is used for beneficial effect of the present invention being described, specifically in table 1:
As shown in Table 1: preparing metal grinding table processing temperature is 1500 DEG C, the melting sources time is 40 ~ 60min, electric thermal power is 500 ~ 1000KW, melt stage power consumption >=330kwh, the average power consumption per hour of metal grinding table papermaking is being used to be 75KWh, and the inventive method to prepare Polyphenylene sulfide millstone processing temperature be 320 DEG C, the melting sources time is 10min, electric thermal power is 5 ~ 50KW, melt stage power consumption is 1kwh, the average power consumption per hour of Polyphenylene sulfide millstone papermaking is being used to be 40KWh, visible: the inventive method is compared than conventional metals mill preparation technology and significantly reduced power consumption, production time and cost are saved, improve production efficiency, and processing temperature is low.
Claims (1)
1. the preparation technology of a paper grade (stock) Polyphenylene sulfide millstone, described Polyphenylene sulfide millstone adopts polyphenyl thioether composite material to make, described polyphenyl thioether composite material comprises following raw material: polyphenylene sulfide, toughening element, fortifying fibre, wear resistant components, non-fiber auxiliary agent, it is characterized in that, described preparation technology comprises the following steps:
The pre-treatment of S1. expecting: surface modification is carried out to toughening element, fortifying fibre, wear resistant components, non-fiber auxiliary agent;
S2. batching and batch mixing: take each raw material by formula rate, with agitator, the raw material prepared fully is mixed; Wherein, filling a prescription is: the polyphenylene sulfide of 30 ~ 70wt%, the toughening element of 5 ~ 10wt%, the fortifying fibre of 20 ~ 50wt%, the wear resistant components of 0 ~ 20wt%, the non-fiber auxiliary agent of 0 ~ 30wt%;
S3. preheating and drying: the raw material mixed in step S2 is carried out drying in the temperature of 100 ~ 150 DEG C, described drying mode is that convection type is dry, vacuum drying or infra-red drying, drying time >30min;
S4. plastify: screw injection molding machine barrel each section of temperature is set respectively, the raw material after preheating and drying in step S3 is added in the screw injection molding machine setting temperature and plastify 5 ~ 10min, uniform melt must be plastified; Described screw injection molding machine barrel each section of temperature is set to 250 ~ 320 DEG C;
S5. injection filling mould: uniform melt injection filling mould will be plastified in step S4, and be full of die cavity; The condition of described injection filling mould is: nozzle temperature 250 ~ 320 DEG C, mold temperature 150 ~ 250 DEG C, injection pressure 150 ~ 300MPa, mould-filling time 5 ~ 60s, screw speed 120 ~ 200rad/min, clamp force 500 ~ 1000T;
S6. pressurize: after injection filling mould, screw rod still keeps pressurized state, pressurize 20 ~ 60s;
S7. cool: cool colloid in mould, cooling condition is: after Jiao Kou freezes, cool 10 ~ 20min;
S8. the demoulding and post processing: cooled colloid is carried out the demoulding, the process of demoulding after annealing, the annealing temperature of annealing in process is 100 ~ 250 DEG C, then carries out deburring, burr, surface finish, obtained paper grade (stock) Polyphenylene sulfide millstone.
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| CN102322442A (en) * | 2011-08-30 | 2012-01-18 | 浙江三工汽车零部件有限公司 | Water pump impeller made of polyphenylene sulfide (PPS) material and manufacturing method of water pump impeller |
| CN102719098A (en) * | 2011-06-03 | 2012-10-10 | 湖北孚龙管业科技有限公司 | Composite modified polyphenylene sulfide material for water supply pipe insert and preparation method thereof |
| CN103305002A (en) * | 2013-05-31 | 2013-09-18 | 四川华通特种工程塑料研究中心有限公司 | Polyphenylene sulfide millstone for papermaking pulping |
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| CN102719098A (en) * | 2011-06-03 | 2012-10-10 | 湖北孚龙管业科技有限公司 | Composite modified polyphenylene sulfide material for water supply pipe insert and preparation method thereof |
| CN102322442A (en) * | 2011-08-30 | 2012-01-18 | 浙江三工汽车零部件有限公司 | Water pump impeller made of polyphenylene sulfide (PPS) material and manufacturing method of water pump impeller |
| CN103305002A (en) * | 2013-05-31 | 2013-09-18 | 四川华通特种工程塑料研究中心有限公司 | Polyphenylene sulfide millstone for papermaking pulping |
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