CN109955458A - A kind of preparation facilities and preparation method thereof of low volatility resin - Google Patents
A kind of preparation facilities and preparation method thereof of low volatility resin Download PDFInfo
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- CN109955458A CN109955458A CN201910278939.7A CN201910278939A CN109955458A CN 109955458 A CN109955458 A CN 109955458A CN 201910278939 A CN201910278939 A CN 201910278939A CN 109955458 A CN109955458 A CN 109955458A
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- barrel
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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
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/86—Component parts, details or accessories; Auxiliary operations for working at sub- or superatmospheric pressure
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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
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/487—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws with consecutive casings or screws, e.g. for feeding, discharging, mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
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- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of preparation facilities and preparation method thereof of low volatility resin, are related to technical field of macromolecules.The present invention includes the first barrel, feed inlet, twin-screw, the second barrel, single screw rod and discharge port；Feed inlet is provided with one end of the first barrel；Two screw rods of twin-screw are parallel to each other, and twin-screw is mounted on the center of the first barrel and the center line of opposite first barrel is symmetric；It cooperates between spiral shell rib and screw channel on two screw rods；Second barrel is connected to perpendicular to the first barrel and with the first barrel；Single screw rod is mounted on the second barrel center and fixes along the extending direction of the second barrel；Discharge port is provided with the one end of the second barrel far from the first barrel.The volatility of resin material can be effectively reduced in the present invention.
Description
Technical field
The invention belongs to technical field of macromolecules, are related to a kind of preparation facilities and preparation method thereof of low volatility resin.
Background technique
Macromolecule resin is widely used in the industrial circles such as machinery, automobile, electronic apparatus, instrument and meter, weaving and building,
But as high molecular material is using more and more extensive, after product is made, release volatilization small point is easy under the conditions of daily
Sub- substance, the small-molecule substance are largely the catalyst used in petrochemical plant synthesis process, the residual list in synthesis process
Body etc., which, which reaches a certain concentration and contact for a long time, can generate the poisoning symptoms such as out of strength, headache, nausea, meeting when serious
The liver, kidney, brain and nervous system for hurting human body, cause failure of memory etc..Increasingly with human life quality
It improves, people's health consciousness is also constantly enhancing, and the small molecule volatile matter for reducing macromolecule resin just becomes more more and more intense
Wish.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation facilities and preparation method thereof of low volatility resin, pass through twin-screw
With being used in combination for single screw rod, solve the problems, such as that existing resin material volatility is high.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions:
The present invention provides a kind of preparation facilities of low volatility resin comprising:
First barrel；
Feed inlet is provided with one end of first barrel；
Twin-screw, two screw rods are parallel to each other；It is central and relatively described that the twin-screw is mounted on first barrel
The center line of first barrel is symmetric；It cooperates between spiral shell rib and screw channel on two screw rods；
Second barrel, perpendicular to first barrel；One end of second barrel is connected to first barrel；
Single screw rod is mounted on the second barrel center, and fixes along the extending direction of second barrel；
Discharge port is provided with the one end of second barrel far from first barrel.
As a further improvement of the foregoing solution, the preparation facilities further includes several reverse thread block groups, described several
Reverse thread block group is distributed in inside first barrel；Each reverse thread block group includes two reverse threads arranged side by side
Block, described two reverse thread blocks are set on two screw rods of twin-screw；Each reverse thread block is along two
Screw rod and towards the direction of feed inlet be equipped with the screw thread opposite with twin-screw hand of spiral.
As a further improvement of the foregoing solution, the preparation facilities further includes several vaccum exhaust outlets, described several true
Idle discharge port is provided with the corresponding side of the reverse thread block group far from the feed inlet.
As a further improvement of the foregoing solution, between several reverse thread block groups and several vaccum exhaust outlets
It is spaced apart.
As a further improvement of the foregoing solution, liquid feed is also provided with close to feed inlet side on first barrel
Mouthful.
As a further improvement of the foregoing solution, liquid turbine flowmeter is equipped in the liquid feed mouth.
The present invention also provides a kind of preparation methods of low volatility resin, at least include the following steps:
S1: weighing the resin raw material mixture of proper ratio, and the weighed mixture of institute is sufficiently mixed uniformly；
S2: uniformly mixed mixture is conveyed into first barrel, is kneaded；
S3: it is mixed being passed into second barrel after the mixture that first barrel is sufficiently kneaded squeezes out
Refining, obtains final product.
As a further improvement of the foregoing solution, the resin includes polypropylene, polyethylene, polyvinyl chloride, acrylic nitrile-butadiene
Styrene graft copolymer, acrylonitrile-ethylenepropylene elastomer-phenylethene grafted copolymer, methyl methacrylate-
Butadiene-styrene graft copolymer, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyamides
One or more of amine, polyformaldehyde, polyphenylene sulfide, polyphenylene oxide etc. composition.
As a further improvement of the foregoing solution, it in the step S2, feeds in the liquid of first barrel
Mouth persistently adds volatile liquid gas.
As a further improvement of the foregoing solution, in the step S2, the mixture passes through material conveying metering device
It is conveyed into first barrel.
The present invention is used in combination by double screw extruder and single screw extrusion machine, is more conducive to material and is added in high temperature
Low molecular volatilization under the conditions of work, and reverse thread block group is assisted to design, make material accumulation with higher before vacuum volatilization
Density, later in vaccum exhaust outlet since pressure official post material reaches maximum devolatilization.Added by being mixed into material
Add volatile species, can effectively carry out part lower-molecular substance, finally obtains low volatility, low VOC, low smell etc.
The high molecular material of " clean ".The preparation facilities and preparation method have that process is simple, continuous, high production efficiency, product quality
Stable advantage reduces the low molecule content of material while keeping high molecular material performance, and material is made to possess low VOC, low
Smell etc., and this method is not limited by high molecular material type, can be applicable in most high molecular materials, expands production
The use scope of product, has broad application prospects.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is a kind of structural schematic diagram of the preparation facilities of low volatility resin.
Fig. 2 is a kind of preparation method flow chart of low volatility resin.
In attached drawing, parts list represented by the reference numerals are as follows:
The first barrel of 1-, 2- feed inlet, 3- twin-screw, the second barrel of 4-, 5- single screw rod, 6- discharge port, 7- reverse thread
Block group, 8- vaccum exhaust outlet, 9- liquid feed mouth, 10- lateral feeder.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Refering to Figure 1, the present invention provides a kind of preparation facilities of low volatility resin, including the first barrel 1, charging
Mouth 2, twin-screw 3, the second barrel 4, single screw rod 5, discharge port 6, several reverse thread block groups 7, several vaccum exhaust outlets 8, liquid
Feed inlet 9, lateral feeder 10.
As shown in Figure 1, cylinder can be made using metal in the first barrel 1, heating can be equipped in the outside of the first barrel 1
And cooling device, heating can be using resistance heatings or using heating methods such as induction heating or far infrareds.It is cooling
Purpose be prevent the overheat of material or need to be quickly cooled down, in order to avoid material degrade.Cooling can using air-cooled, water cooling or
The types of cooling such as air cooling.
As shown in Figure 1, feed inlet 2 is provided on the first barrel 1, it is the device guaranteed to extruder continuous feeding, shape
It, can be in cone or square cone such as funnel.There are charging aperture in the bottom of feed opening and 1 junction of the first barrel, can set at this
There are cutting device, adjustable and truncation stream.Cooling jacket can be installed around charging aperture, to prevent the first barrel
1 high temperature conducts heat to feed opening, avoids in feed opening plastics heating tacky, causes charging uneven and the case where stream is obstructed.
The side of feed opening is also provided with windowpane and calibration dosage device.Feed inlet 2 is also provided with vacuum decompression device, so as to
Preheating and drying is carried out to raw material.Mixture enters inside feed inlet 2 after passing through material conveying metering device, can set in feed inlet 2
There is blender, blender rotation can effectively be uniformly mixed mixture.2 bottom of feed inlet is also equipped with vibration gas
Dish, vibration gas dish can spray around the air of compression along the inner wall of feed inlet 2, and due to the continuous variation of air pressure,
The vibration that vibration gas dish edge can generate high frequency loosens the material being adsorbed on 2 inner wall of feed inlet, can effectively promote charging
Mixing material flows downward in mouth 2.
As shown in Figure 1, two screw rods of twin-screw 3 are parallel to each other, it can be respectively with the outstanding branch of thrust bearing in the first barrel 1
Center, and the center line of opposite first barrel 1 is symmetric.Twin-screw 3 passes through deceleration mechanism driving by motor.Double spiral shells
Cooperate between spiral shell rib and screw channel on two screw rods of bar 3,3 extrusion system of twin-screw includes multiple types, in this case with
For engagement type Heterodromy double-screw extrusion system, the spiral shell rib of two screw rods in engagement type Heterodromy double-screw extrusion system
It is intermeshed between screw channel, the gyratory directions of two screw rods are different.Since the gyratory directions of two screw rods are different, object on a screw rod
Expect that the road being threadingly advanced is blocked by the spiral shell rib of another screw rod, the movement of " ∞ " font cannot be formed.In Solid Conveying and Melting part, object
Material is fed forward in the form of approximate closed " C " shape cell.But in order to make the outer of screw rod in material Mixed Design
There are certain gap values between diameter and the outer diameter of another screw rod, to enable material to pass through.Material by two screw rods it
Between radial clearance when, by strong shearing, stirring and calendering effect.Work of the raw material put by feed inlet 2 in twin-screw 3
With lower constantly by the shear-mixed of portraitlandscape, to generate a large amount of thermal energy, it is kneaded resin more evenly, improves product matter
Amount.
As shown in Figure 1, liquid feed mouth 9 is also provided with close to feed opening side on the first barrel 1, in liquid feed mouth 9
It is interior to be equipped with liquid turbine flowmeter.It is added and lasting is easily waved into 3 extrusion system of twin-screw by liquid addition turbine flowmeter
Liquid gas is sent out, to carry out part lower-molecular substance.
As shown in Figure 1, several reverse thread block groups 7, are distributed in inside the first barrel 1, each reverse thread block group 7 includes
Two reverse thread blocks arranged side by side, two reverse thread blocks are sleeved on two screw rods of twin-screw 3.Each reverse thread block edge
Two screw rods and towards the direction of feed inlet 2 be equipped with the screw thread opposite with 3 hand of spiral of twin-screw.Reverse thread block group 7
Setting be to hinder quick flowing of the material to front of advancing between two screw rods, make object in order to inside 3 extrusion system of twin-screw
Material forms certain accumulation pressure inside screw rod.
As shown in Figure 1, usually 3 extrusion system of twin-screw can be divided into feeding section, compression section, homogenizing zone, if dry vacuum is arranged
Port is then provided with the compression section of 3 extrusion system of twin-screw, and several vaccum exhaust outlets 8 are provided with corresponding reverse thread block group 7
Side far from feed inlet 2.It is spaced apart between several reverse thread block groups 7 and several vaccum exhaust outlets 8.By reverse thread
After block group 7 is to the extruding of material, the accumulation pressure of formation loses pressure at vaccum exhaust outlet 8 suddenly, is conducive to low-molecular material
Discharge.Several reverse thread block groups 7 make material bulk density with higher before vacuum volatilization, arrange later in corresponding vacuum
Maximum devolatilization is carried out by pressure difference at port 8.
As shown in Figure 1, the second barrel 4 passes through lateral feeder perpendicular to the first barrel 1, and between the first barrel 1
10 connections, the i.e. tail end that the second barrel 4 is connected to the first barrel 1.Cylinder can also be made using metal in second barrel 4, and with
Heater and cooler device is equally arranged in first barrel 1.
As shown in Figure 1, single screw rod 5 is mounted in the second barrel 4, mutually hang down between the twin-screw 3 in the first barrel 1
Directly.Single screw rod 5 can be consolidated using the outstanding branch of thrust bearing in the center of the first barrel 1, and along the extending direction of the second barrel 4
It is fixed.Minimize the gap between screw rod and the second barrel 4, be plasticized material by powerful shear action and push to
Before.Several vaccum exhaust outlets 8 can also be installed in 5 extrusion system of single screw rod, make the object by 3 extrusion system devolatilization of twin-screw
Material is further sheared, stirred herein, rolled and devolatilization.
As shown in Figure 1, discharge port 6 is provided with one end of the separate lateral feeder 10 of the second barrel 4, by twin-screw
Material after the synergy of 5 extrusion system of 3 extrusion systems and single screw rod squeezes out from here.
As shown in Figure 1, material enters in the first barrel 1 by feed inlet 2 when work, into material heating zone, heating
In area material when by between two screw rods of 3 extrusion system of twin-screw by strong shearing, stirring and calendering, mistake herein
Cheng Zhong, material gradually become molten state, when by reverse thread block group 7, material is advanced forwards between two screw rods flowing
Speed is hindered, and so that material is formed certain accumulation pressure inside screw rod, the accumulation pressure of formation is at vaccum exhaust outlet 8
Pressure is lost suddenly, is conducive to the discharge of low-molecular material.The material of molten state enters the second barrel 4 by lateral feeder 10
Interior, under the turning effort of single screw rod 5, material is continued to press on forward by powerful shear action, and further passes through vacuum
Exhaust outlet 8 carries out devolatilization, and the material after above-mentioned melting homogenizing is squeezed out from discharge port 6.
It please refers to shown in Fig. 2, the present invention provides a kind of preparation method of low volatility resin:
S1: resin mixtures of materials each component is weighed according to the ratio, and mixed material is put into high-speed mixer, is pressed
According to setting technique carry out it is uniformly mixed；
S2: using material conveying metering device, the material in step S1 after mixing is sent into the first barrel 1, material exists
It is processed in the twin-screw extrusion system of first barrel 1, and designs suitable 3 revolving speed of twin-screw and suitable twin-screw 3
Squeeze out operating temperature section.The twin-screw extrusion system opens up at least one vaccum exhaust outlet 8 at material compression section, and from
One group of reverse thread block group 7 is designed in each 8 leading portion of vaccum exhaust outlet, and passes through liquid turbine stream in feed inlet 2 in blanking direction
Meter adds lasting volatile liquid gas, such as liquefaction nitrogen, and liquefy hydrogen or liquefied air etc..Reverse thread block group 7
Make material bulk density with higher before vacuum volatilization, is carried out most at corresponding vaccum exhaust outlet 8 by pressure difference later
The devolatilization of limits, the addition of volatile liquid gas further promote the volatilization of small-molecule substance；
S3: the material of melting is sent into perpendicular second after the first barrel 1 extrusion, then through lateral feeder 10
In barrel 4, material is further kneaded in the single screw rod extrusion system of the second barrel 4, obtains final finished.
Embodiment 1
Virgin pp resin is prepared using a kind of preparation facilities of low volatility resin provided by the invention, i.e., pure PP:
S1: proportion is designed by fonnulator and weighs acrylic resin, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into the first barrel 1, material is first
It is processed, and is added by liquid addition turbine flowmeter in spout lasting easy in the twin-screw extrusion system of barrel 1
Volatilization liquefaction nitrogen squeezes out operating temperature section, warp according to 3 revolving speed of twin-screw and suitable twin-screw 3 of designer's design
After the discharging of twin-screw extrusion system die orifice, the second barrel 4 is entered by lateral feeder 10, in the single screw rod of the second barrel 4
In extrusion system, further mixed refining process is carried out, finished product is finally packaged as.
Embodiment 2
Mineral filled polypropylene resin, i.e. mine are prepared using a kind of preparation facilities of low volatility resin provided by the invention
Object fills PP:
S1: proportion is designed by fonnulator and weighs PP resin, mineral, compatilizer, toughener, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into the first barrel 1, material is first
It is processed, and is added by liquid addition turbine flowmeter in spout lasting easy in the twin-screw extrusion system of barrel 1
Volatilize liquefied air, squeezes out operating temperature section, warp according to 3 revolving speed of twin-screw and suitable twin-screw 3 of designer's design
After the discharging of twin-screw extrusion system die orifice, the second barrel 4 is entered by lateral feeder 10, in the single screw rod of the second barrel 4
In extrusion system, further mixed refining process is carried out, finished product is finally packaged as.
Embodiment 3
Pure acrylonitrile-butadiene-styrene (ABS) is prepared using a kind of preparation facilities of low volatility resin provided by the invention
Copolymer resin, i.e., pure ABS:
S1: proportion is designed by fonnulator and weighs ABS resin, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into the first barrel 1, material is first
It is processed, and is added by liquid addition turbine flowmeter in spout lasting easy in the twin-screw extrusion system of barrel 1
Volatilize liquified helium, squeezes out operating temperature section, warp according to 3 revolving speed of twin-screw and suitable twin-screw 3 of designer's design
After the discharging of twin-screw extrusion system die orifice, the second barrel 4 is entered by lateral feeder 10, in the single screw rod of the second barrel 4
In extrusion system, further mixed refining process is carried out, finished product is finally packaged as.
Embodiment 4
Fire-retardant acrylonitrile-butadiene diene-benzene second is prepared using a kind of preparation facilities of low volatility resin provided by the invention
Alkene copolymer resin, i.e. flame-proof ABS:
S1: proportion is designed by fonnulator and weighs ABS resin, fire retardant, toughener, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into the first barrel 1, material is first
It is processed, and is added by liquid addition turbine flowmeter in spout lasting easy in the twin-screw extrusion system of barrel 1
Volatilization liquefaction hydrogen squeezes out operating temperature section, warp according to 3 revolving speed of twin-screw and suitable twin-screw 3 of designer's design
After the discharging of twin-screw extrusion system die orifice, the second barrel 4 is entered by lateral feeder 10, in the single screw rod of the second barrel 4
In extrusion system, further mixed refining process is carried out, finished product is finally packaged as.
Embodiment 5
Pure acetal resin is prepared using a kind of preparation facilities of low volatility resin provided by the invention, i.e., pure POM:
S1: proportion is designed by fonnulator and weighs POM resin, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into the first barrel 1, material is first
It is processed, and is added by liquid addition turbine flowmeter in spout lasting easy in the twin-screw extrusion system of barrel 1
Volatilization liquefaction nitrogen squeezes out operating temperature section, warp according to 3 revolving speed of twin-screw and suitable twin-screw 3 of designer's design
After the discharging of twin-screw extrusion system die orifice, the second barrel 4 is entered by lateral feeder 10, in the single screw rod of the second barrel 4
In extrusion system, further mixed refining process is carried out, finished product is finally packaged as.
Embodiment 6
Mineral enhancing acetal resin, i.e. mine are prepared using a kind of preparation facilities of low volatility resin provided by the invention
Object enhances POM:
S1: proportion is designed by fonnulator and weighs POM resin, mineral, compatilizer, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into the first barrel 1, material is first
It is processed, and is added by liquid addition turbine flowmeter in spout lasting easy in the twin-screw extrusion system of barrel 1
Volatilization liquefaction nitrogen squeezes out operating temperature section, warp according to 3 revolving speed of twin-screw and suitable twin-screw 3 of designer's design
After the discharging of twin-screw extrusion system die orifice, the second barrel 4 is entered by lateral feeder 10, in the single screw rod of the second barrel 4
In extrusion system, further mixed refining process is carried out, finished product is finally packaged as.
Embodiment 7
Pure polyamide is prepared using a kind of preparation facilities of low volatility resin provided by the invention, i.e., pure PA:
S1: proportion is designed by fonnulator and weighs PA resin, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into the first barrel 1, material is first
It is processed, and is added by liquid addition turbine flowmeter in spout lasting easy in the twin-screw extrusion system of barrel 1
Volatilization liquefaction nitrogen squeezes out operating temperature section, warp according to 3 revolving speed of twin-screw and suitable twin-screw 3 of designer's design
After the discharging of twin-screw extrusion system die orifice, the second barrel 4 is entered by lateral feeder 10, in the single screw rod of the second barrel 4
In extrusion system, further mixed refining process is carried out, finished product is finally packaged as.
Embodiment 8
Prepare flame resistant polyamide resin using a kind of preparation facilities of low volatility resin provided by the invention, i.e., it is fire-retardant
PA:
S1: proportion is designed by fonnulator and weighs PA resin, fire retardant, toughener, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into the first barrel 1, material is first
It is processed, and is added by liquid addition turbine flowmeter in spout lasting easy in the twin-screw extrusion system of barrel 1
Volatilization liquefaction nitrogen squeezes out operating temperature section, warp according to 3 revolving speed of twin-screw and suitable twin-screw 3 of designer's design
After the discharging of twin-screw extrusion system die orifice, the second barrel 4 is entered by lateral feeder 10, in the single screw rod of the second barrel 4
In extrusion system, further mixed refining process is carried out, finished product is finally packaged as.
Comparative example 1
Virgin pp resin is prepared using double screw extruder, i.e., pure PP:
S1: proportion is designed by fonnulator and weighs PP resin, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into 3 extruder of twin-screw, by screw rod
Shear action, abundance is kneaded, and blend melted, squeezed out, tie rod, cooling, pelletizing.It is packaged into finished product.
Comparative example 2
Mineral filled polypropylene resin is prepared using double screw extruder, i.e., mineral-filled PP:
S1: proportion is designed by fonnulator and weighs PP resin, mineral, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into 3 extruder of twin-screw, by screw rod
Shear action, abundance is kneaded, and blend melted, squeezed out, tie rod, cooling, pelletizing.It is packaged into finished product.
Comparative example 3
Pure acrylonitrile butadiene styrene resin resin is prepared using double screw extruder, i.e., pure ABS:
S1: proportion is designed by fonnulator and weighs ABS resin, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into 3 extruder of twin-screw, by screw rod
Shear action, abundance is kneaded, and blend melted, squeezed out, tie rod, cooling, pelletizing.It is packaged into finished product.
Comparative example 4
Flame-retardant acrylonitrile-butadiplasticrene copolymer resin, i.e. flame-proof ABS are prepared using double screw extruder:
S1: proportion is designed by fonnulator and weighs ABS resin, fire retardant, toughener, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into 3 extruder of twin-screw, by screw rod
Shear action, abundance is kneaded, and blend melted, squeezed out, tie rod, cooling, pelletizing.It is packaged into finished product.
Comparative example 5
Pure acetal resin is prepared using double screw extruder, i.e., pure POM:
S1: proportion is designed by fonnulator and weighs POM resin, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into 3 extruder of twin-screw, by screw rod
Shear action, abundance is kneaded, and blend melted, squeezed out, tie rod, cooling, pelletizing.It is packaged into finished product.
Comparative example 6
Mineral enhancing acetal resin is prepared using double screw extruder, i.e. mineral enhance POM:
S1: proportion is designed by fonnulator and weighs POM resin, mineral, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into 3 extruder of twin-screw, by screw rod
Shear action, abundance is kneaded, and blend melted, squeezed out, tie rod, cooling, pelletizing.It is packaged into finished product.
Comparative example 7
Pure polyamide is prepared using double screw extruder, i.e., pure PA:
S1: proportion is designed by fonnulator and weighs PA resin, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into 3 extruder of twin-screw, by screw rod
Shear action, abundance is kneaded, and blend melted, squeezed out, tie rod, cooling, pelletizing.It is packaged into finished product.
Comparative example 8
Flame resistant polyamide resin is prepared using double screw extruder, i.e., fire-retardant PA:
S1: proportion is designed by fonnulator and weighs PA resin, fire retardant, toughener, processing aid etc.；
S2: each component in step S1 is put into high-speed mixer, is mixed according to the technique that fonnulator sets
Uniformly；
S3: using material conveying metering device, material mixed in step S2 is sent into 3 extruder of twin-screw, by screw rod
Shear action, abundance is kneaded, and blend melted, squeezed out, tie rod, cooling, pelletizing.It is packaged into finished product.
All embodiment and comparative example resulting products, are tested for the property according to following test method:
1 performance test methods of table
2 embodiment of table, the corresponding test result of comparative example
Table 2 (continued)
Find out from test data above, each embodiment possesses lower smell and lower T- compared with corresponding comparative example
VOC content, it was demonstrated that remaining small molecule is less, i.e., a kind of preparation facilities of low volatility resin provided by the invention and its preparation
Method can effectively remove the low molecular weight volatile object in material, and effect is obvious.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (10)
1. a kind of preparation facilities of low volatility resin, characterized in that it comprises:
First barrel；
Feed inlet is provided with one end of first barrel；
Twin-screw, two screw rods are parallel to each other；It is central and relatively described first that the twin-screw is mounted on first barrel
The center line of barrel is symmetric；It cooperates between spiral shell rib and screw channel on two screw rods；
Second barrel, perpendicular to first barrel；One end of second barrel is connected to first barrel；
Single screw rod is mounted on the second barrel center, and fixes along the extending direction of second barrel；
Discharge port is provided with the one end of second barrel far from first barrel.
2. a kind of preparation facilities of low volatility resin according to claim 1, which is characterized in that the preparation facilities also wraps
Several reverse thread block groups are included, several reverse thread block groups are distributed in inside first barrel；Each reversed spiral shell
Line block group includes two reverse thread blocks arranged side by side, and described two reverse thread blocks are set in two screw rods of twin-screw
On；Each reverse thread block is equipped with opposite with twin-screw hand of spiral along two screw rods and towards the direction of feed inlet
Screw thread.
3. a kind of preparation facilities of low volatility resin according to claim 2, which is characterized in that the preparation facilities also wraps
Several vaccum exhaust outlets are included, several vaccum exhaust outlets are provided with the corresponding reverse thread block group far from the feed inlet
Side.
4. a kind of preparation facilities of low volatility resin according to claim 3, which is characterized in that several reverse threads
It is spaced apart between block group and several vaccum exhaust outlets.
5. a kind of preparation facilities of low volatility resin according to claim 1, which is characterized in that leaned on first barrel
Nearly feed inlet side is also provided with liquid feed mouth.
6. a kind of preparation facilities of low volatility resin according to claim 5, which is characterized in that in the liquid feed mouth
It is interior to be equipped with liquid turbine flowmeter.
7. a kind of preparation method of the preparation facilities of low volatility resin a kind of as described in any one of claim 1 to 6,
It is characterized in that comprising following steps:
S1: weighing the resin raw material mixture of proper ratio, and the weighed mixture of institute is sufficiently mixed uniformly；
S2: uniformly mixed mixture is conveyed into first barrel, is kneaded；
S3: being kneaded being passed into second barrel after the mixture that first barrel is sufficiently kneaded squeezes out,
Obtain final product.
8. a kind of preparation method of low volatility resin according to claim 7, which is characterized in that the resin includes poly- third
Alkene, polyethylene, polyvinyl chloride, acrylonitrile-butadiene-phenylethene grafted copolymer, acrylonitrile-ethylenepropylene elastomer-benzene second
Alkene graft copolymer, polyethylene terephthalate, gathers to benzene methyl methacrylate-butadiene-styrene graft copolymer
One or more of dioctyl phthalate fourth diester, polycarbonate, polyamide, polyformaldehyde, polyphenylene sulfide, polyphenylene oxide etc. composition.
9. a kind of preparation method of low volatility resin according to claim 7, which is characterized in that in the step S2,
Volatile liquid gas is persistently added in the liquid feed mouth of first barrel.
10. a kind of preparation method of low volatility resin according to claim 7, which is characterized in that in the step S2,
The mixture is conveyed into first barrel by material conveying metering device.
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Cited By (1)
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| CN111961318A (en) * | 2020-08-20 | 2020-11-20 | 珠海格力绿色再生资源有限公司 | Enhanced PBT resin composition, preparation method thereof and precipitation detection method |
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