CN105563683A - Method for preparing master batches through direct PET melt mixing and equipment special for method - Google Patents
Method for preparing master batches through direct PET melt mixing and equipment special for method Download PDFInfo
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- CN105563683A CN105563683A CN201610065968.1A CN201610065968A CN105563683A CN 105563683 A CN105563683 A CN 105563683A CN 201610065968 A CN201610065968 A CN 201610065968A CN 105563683 A CN105563683 A CN 105563683A
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- dispersant
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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
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
Abstract
Provided are a method for preparing master batches through direct PET melt mixing and equipment special for the method. The method comprises the steps that melt is introduced from a main melt pipeline, a delustering agent and a dispersing agent are mixed in proportion, and the mixture enters a double-screw extruder in a negative-pressure state for low-speed preliminary mixing; and then blending is carried out through an ultrasonic dynamic mixer, dicing, drying and packaging are carried out after water cooling, and the corresponding master batches are prepared. The equipment comprises an extruder assembly, an auxiliary material bin assembly, a dispersing agent bin assembly, an ultrasonic dynamic mixing assembly, a dicing assembly, a drying and packaging machine and a control box. The main melt pipeline is connected to a discharging opening of a discharging assembly, and communicates with a first feeding opening pipeline of the extruder assembly through a branch melt pipeline, and a discharging opening of a corresponding feeding assembly communicates with a second feeding opening pipeline of the extruder assembly. The method and the equipment have the beneficial effects that viscosity is lowered, the quality is stable, and good spinnability is achieved; and the procedures of slicing and dicing, drying, solid phase condensation polymerization, grinding and the like are omitted, and cost is reduced.
Description
Technical field
The present invention relates to a kind of PET melt and directly mix the method and special equipment thereof of producing master batch.
Background technology
It is adopt the carriers such as PET or PBT that current master batch is produced; these carriers are bought with sliced form by master batch factory; be mixed into functional powder by after these carrier grinds, through twin-screw extruder melting and carry out high-rate of shear, high rotating speed mixing after send into pelleter, obtain master batch after granulated and dried.But need High Rotation Speed to mix in the twin-screw extruder process related in conventional processing routes, under this shear action that raw material after melting is produced at High Rotation Speed, viscosity declines obviously, thus need to have to select high sticky section to compensate the loss of film-making process medium viscosity reduction in raw material selection, this causes master batch cost of manufacture higher; In addition, after needing the section of making to melt time in traditional handicraft usually, more again cut into slices again after mixing with corresponding delustering agent and dispersant, complex steps, and also the wasting of resources is easily caused in centre.
Summary of the invention
The present invention is directed to current technique and easily cause melt viscosity reduction, complex process, waste resource, the problem that cost is high, propose a kind of viscosity reduce not obvious, reduce operation such as section pelletizing, drying, solid phase polycondensation, abrasive dust etc., significantly reduce electric power, the melt of packed and transported expense directly mix the method and special equipment thereof of producing master batch.
A kind of PET melt of the present invention directly mixes the method producing master batch, comprises the steps:
It is the melt of 0.62-0.65dl/g that step 1. introduces viscosity from the main melt pipe of PET, is proportionally mixed into delustering agent and dispersant, obtains compound, described melt: delustering agent: the mass ratio of dispersant is 1:0.19 ~ 0.49:0.005 ~ 0.2; Described melt is PET, and described delustering agent is titanium dioxide, and described dispersant is titanate coupling agent;
The compound that step 1 obtains by step 2. enters twin (double) screw extruder under negative pressure state, and reach 10MPa ~ 15MPa condition at melt pressure and carry out just mixed formation just consolute body, the rotating speed of wherein said twin (double) screw extruder is 80 ~ 150rpm;
Step 3. first carries out blendedly obtaining miscible body through ultrasonic dynamic mixer from twin (double) screw extruder first consolute body out;
Step 4., by pelletizing after ultrasonic dynamic mixer miscible body water-cooled out, drying, packing, makes corresponding master batch.
In step 1, the mass ratio of melt, delustering agent and dispersant is: 50:49:1; Twin (double) screw extruder draw ratio in step 2 is 35; The supersonic frequency of the ultrasonic dynamic mixer of step 3 is 100,000-20 ten thousand Hz, and rotating speed is 30-50rpm.
Utilize the special equipment of method of the present invention, it is characterized in that: comprise extruder assembly, auxiliary material storehouse assembly, dispersant feed bin assembly, ultrasonic dynamic mixing assembly, pelletizing assembly, dry baling press and control cabinet, main melt pipe is connected on the discharging opening of discharging assembly, described main melt pipe is by propping up the first charging aperture pipeline communication of melt pipe and described extruder assembly, the discharging opening of described auxiliary material storehouse assembly configures the first feed assembly, the discharging opening of described dispersant feed bin assembly configures the second feed assembly, and the discharging opening of the first feed assembly, second feed assembly all with the second charging aperture pipeline connection of described extruder assembly, extruder assembly discharging opening and the described ultrasonic dynamic charging aperture pipeline connection mixing assembly, the discharge outlet of described ultrasonic dynamic mixing assembly is furnished with cooling device for cooling and pelletizing assembly, the discharge outlet of described pelletizing assembly is furnished with dry baling press, the control end of described auxiliary material storehouse assembly, dispersant feed bin assembly, pelletizing assembly is connected to the corresponding control end signal of described control cabinet respectively,
Described extruder assembly comprises twin (double) screw extruder, the first frequency converter, the first motor and the first pressure controller, is furnished with the first temperature controller in the chuck of described twin (double) screw extruder; Described twin (double) screw extruder arranges the first charging aperture, the second charging aperture and extruder assembly discharging opening, and the first described pressure controller is arranged on the pipeline of described extruder assembly discharge outlet; The output shaft of the first described motor is connected with the power intake of described twin (double) screw extruder, and the transmission of electricity control end of the first described motor is furnished with the first frequency converter; The first described frequency converter is furnished with corresponding first rotational speed governor; The signal feedback end of the first described pressure controller is connected with the signal feedback end of the first described frequency converter;
Described auxiliary material storehouse assembly comprises auxiliary material powder material warehouse, powder drying storehouse and the first feed assembly, the discharging opening of described auxiliary material powder material warehouse and the charging aperture pipeline connection in described powder drying storehouse, the discharging opening in described powder drying storehouse and the charging aperture pipeline connection of the first described feed assembly, the discharging opening of the first described feed assembly and the second charging aperture pipeline connection of described twin (double) screw extruder;
Described dispersant feed bin assembly comprises dispersant feed bin, dispersant dryness storehouse and the second feed assembly, the discharging opening of described dispersant feed bin and the charging aperture pipeline connection of described dispersant dryness storehouse, the discharging opening of described dispersant dryness storehouse and the charging aperture pipeline connection of the second described feed assembly, the discharging opening of the second described feed assembly and the second charging aperture pipeline connection of described twin (double) screw extruder;
The control end of the first described feed assembly, the control end of the second described feed assembly, the control port signal that the control end of described pelletizing assembly is corresponding to described control cabinet respectively connect.
The first described feed assembly comprises the first rotary metering dispenser, the second motor and the second frequency converter, and the charging aperture of the first described rotary metering dispenser is communicated with the discharging opening in corresponding powder drying storehouse; The discharging opening of the first described rotary metering dispenser and the second charging aperture pipeline connection of described twin (double) screw extruder; The output shaft of the second described motor is connected with the power input shaft of described rotary metering dispenser, and the transmission of electricity control end of the second described motor is furnished with the second frequency converter, the control end of the second described frequency converter is connected to the corresponding control port of described control cabinet; The second described feed assembly comprises the second rotary metering dispenser, the 7th motor and the 7th frequency converter, and the charging aperture of the second described rotary metering dispenser is communicated with the discharging opening of corresponding dispersant dryness storehouse; The discharging opening of the second described rotary metering dispenser and the second charging aperture pipeline connection of described twin (double) screw extruder; The output shaft of the 7th described motor is connected with the power input shaft of the second described rotary metering dispenser, and the transmission of electricity control end of the 7th described motor is furnished with the 7th frequency converter, the control end of the 7th described frequency converter is connected to the corresponding control port of described control cabinet.
Described ultrasonic dynamic mixing assembly comprises ultrasonic dynamic mixer, the 3rd motor, the 3rd frequency converter and cooling device, the charging aperture of described ultrasonic dynamic mixer and the discharging opening pipeline connection of described twin (double) screw extruder, the power intake of described ultrasonic dynamic mixer is connected with the clutch end of the 3rd described motor, and the control end of the 3rd described motor is connected with the signal output part of the 3rd described frequency converter.
Described pelletizing assembly comprises pelleter, the 4th motor and the 4th frequency converter, the charging aperture of described pelleter is arranged on the discharge outlet of described ultrasonic dynamic mixer, the output of described stock-cutter is communicated with the charging aperture of described dry baling press, the output of the 4th described motor is connected with the power intake of described pelleter, and the control end of the 4th described motor is connected with the signal output part of the 4th described frequency converter; The control port that the signal input part of the 4th described frequency converter is corresponding to described control cabinet is connected.
A described melt pipe is furnished with corresponding measuring pump, and the power intake of described measuring pump is connected with the output shaft of the 5th motor, the control end of the 5th described motor is connected with the signal output part of the 5th frequency converter of configuration second speed display; The control port that the signal input part of the 5th described frequency converter is corresponding to described control cabinet is connected.
Described powder drying storehouse and described dispersant dryness storehouse are all jacket type structure, in the chuck in wherein said powder drying storehouse, the second temperature controller is set, 3rd temperature controller is set in the chuck of described dispersant dryness storehouse, the inner chamber of powder drying storehouse and dispersant dryness storehouse is all furnished with corresponding paddle, and paddle upper end is connected with the output shaft of corresponding motor; Described powder drying storehouse is furnished with corresponding level sensor to described dispersant dryness storehouse top, and described bottom, powder drying storehouse and described dispersant dryness storehouse bottom are furnished with the low report inductor of corresponding liquid level; Described powder drying storehouse, described dispersant dryness storehouse are communicated with vacuum system respectively by pipeline, ensure the vacuum of powder drying storehouse and dispersant dryness storehouse; Pipeline between described auxiliary material powder material warehouse and described powder drying storehouse, pipeline between described dispersant feed bin and described dispersant dryness storehouse, the pipeline that is connected with vacuum system is all furnished with corresponding control valve; Described powder drying storehouse, described dispersant dryness storehouse configure corresponding pressure controller respectively.
Described discharging assembly comprises discharging pump, the 6th motor and the 6th frequency converter, the power intake of described discharging pump is connected with the output shaft of the 6th motor, and the control end of the 6th described motor is connected with the signal output part of the 6th frequency converter of configuration the 3rd speed display; The signal input part of the 6th described frequency converter is connected with the 3rd corresponding pressure controller signal.
Auxiliary material in described auxiliary material storehouse is delustering agent.
The invention has the beneficial effects as follows: 1) produce than conventional master batch and save section manufacturing cost: adopt melt to produce master batch and can save energy spent by PET or PBT cooling, pelletizing, drying and solid phase polycondensation, the packing charge of section packing can also be saved; 2) saving section abrasive dust cost is produced than conventional master batch: adopt melt to produce master batch and can save section abrasive dust operation, diameter about 500 object powder is worn in section by this operation, needs the electric power that consumption is higher; 3) produce the melting cost saving support powder than conventional master batch, reduce power consumption; 4) produce than conventional master batch and can significantly reduce viscosity and fall, promote master batch quality: conventional master batch is produced as ensureing that mixing uniformity adopts high rotating speed twin-screw should meet output and mix sexual needs, the high shear that high rotating speed brings can cause the viscosity of carrier to decline to a great extent, and about drops to original 0.5 times.The present invention adopt twin-screw carry out low speed just mixed after, then carry out efficiently blended through ultrasonic dynamic mixer, under the prerequisite ensureing mixing uniformity, viscosity drops to 0.8 times of melt.Therefore for meeting the viscosity requirement (General Requirements about 0.4dl/g) of master batch, conventional master batch producer need purchase high sticky section; More than comprehensive, the viscosity adopting melt to produce master batch is fallen little, steady quality, good spinnability, the cost that next melt produces master batch can reduce the operations such as section pelletizing, drying, solid phase polycondensation, abrasive dust than conventional master batch technique, significantly reduce electric power, packed and transported expense etc., reduce costs more than 1000 yuan/ton.
Accompanying drawing explanation
Fig. 1 is the artwork that routine produces master batch.
Fig. 2 is process chart of the present invention.
Detailed description of the invention
The present invention is further illustrated below in conjunction with accompanying drawing
With reference to accompanying drawing:
Embodiment 1 a kind of PET melt of the present invention directly mixes the method producing master batch, comprises the steps:
It is the melt of 0.63dl/g that step 1. introduces viscosity from the main melt pipe of PET, is mixed into delustering agent (49%) and dispersant (1%), obtains compound according to mass ratio; Proportionally be mixed into delustering agent and dispersant, obtain compound, described melt: delustering agent: the mass ratio of dispersant is 1:0.49:0.01; Described melt is PET, and described delustering agent is titanium dioxide, and described dispersant is titanate coupling agent;
The compound that step 1 obtains by step 2. enters twin (double) screw extruder under negative pressure state to carry out low speed (120rpm) and just mixes, and forms just consolute body;
Step 3. first carries out blendedly obtaining miscible body through ultrasonic dynamic mixer from twin (double) screw extruder first consolute body out;
Step 4., by pelletizing after ultrasonic dynamic mixer consolute body water-cooled out, drying, packing, makes corresponding master batch.
In step 1, the mass ratio of melt, delustering agent and dispersant is: 50:49:1; Twin (double) screw extruder draw ratio in step 2 is 35, and speed is; The supersonic frequency of the ultrasonic dynamic mixer of step 3 is 100,000-20Hz, and rotating speed is 30-50rpm.
The special equipment that embodiment 2 utilizes the method described in embodiment 1 to build, comprise extruder assembly 1, auxiliary material storehouse assembly 2, dispersant feed bin assembly 3, ultrasonic dynamic mixing assembly 4, pelletizing assembly 5, dry baling press 6 and control cabinet, main melt pipe 7 is connected on the discharging opening of discharging assembly 8, described main melt pipe 7 is by the first charging aperture pipeline communication of a melt pipe 71 with described extruder assembly 1, the discharging opening of described auxiliary material storehouse assembly 2 configures the first feed assembly 91, the discharging opening of described dispersant feed bin assembly 3 configures the second feed assembly 92, and the discharging opening of the first feed assembly 91, second feed assembly 92 all with the second charging aperture pipeline connection of described extruder assembly 1, extruder assembly 1 discharging opening and the described ultrasonic dynamic charging aperture pipeline connection mixing assembly 4, the discharge outlet of described ultrasonic dynamic mixing assembly 4 is furnished with cooling device 41 for cooling and pelletizing assembly 5, the discharge outlet of described pelletizing assembly 5 is furnished with dry baling press 6, the control end of described auxiliary material storehouse assembly 2, dispersant feed bin assembly 3, pelletizing assembly 5 is connected to the corresponding control end signal of described control cabinet respectively,
Described extruder assembly 1 comprises twin (double) screw extruder 11, first frequency converter 12, first motor 13 and the first pressure controller 14, is furnished with the first temperature controller 111 in the chuck of described twin (double) screw extruder 11; Described twin (double) screw extruder 11 arranges the first charging aperture, the second charging aperture and extruder assembly discharging opening, and the first described pressure controller 14 is arranged on the pipeline of described extruder assembly discharge outlet; The output shaft of the first described motor 13 is connected with the power intake of described twin (double) screw extruder 11, and the transmission of electricity control end of the first described motor 13 is furnished with the first frequency converter 12; The first described frequency converter 12 is furnished with corresponding first rotational speed governor 15; The signal feedback end of the first described pressure controller 14 is connected with the signal feedback end of the first described frequency converter 12;
Described auxiliary material storehouse assembly 2 comprises auxiliary material powder material warehouse 21, powder drying storehouse 22 and the first feed assembly 91, the discharging opening of described auxiliary material powder material warehouse 21 and the charging aperture pipeline connection in described powder drying storehouse 22, the discharging opening in described powder drying storehouse 22 and the charging aperture pipeline connection of the first described feed assembly 91, the discharging opening of the first described feed assembly 91 and the second charging aperture pipeline connection of described twin (double) screw extruder 11;
Described dispersant feed bin assembly 3 comprises dispersant feed bin 31, dispersant dryness storehouse 32 and the second feed assembly 92, the discharging opening of described dispersant feed bin 31 and the charging aperture pipeline connection of described dispersant dryness storehouse 32, the discharging opening of described dispersant dryness storehouse 32 and the charging aperture pipeline connection of the second described feed assembly 92, the discharging opening of the second described feed assembly 92 and the second charging aperture pipeline connection of described twin (double) screw extruder 11;
The control end of the first described feed assembly 91, the control end of the second described feed assembly 92, the control port signal that the control end of described pelletizing assembly 5 is corresponding to described control cabinet respectively connect.
The first described feed assembly 91 comprises the first rotary metering dispenser 911, second motor 912 and the second frequency converter 913, and the charging aperture of the first described rotary metering dispenser 911 is communicated with the discharging opening in corresponding powder drying storehouse 22; The discharging opening of the first described rotary metering dispenser 911 and the second charging aperture pipeline connection of described twin (double) screw extruder 11; The output shaft of the second described motor 912 is connected with the power input shaft of described rotary metering dispenser 911, and the transmission of electricity control end of the second described motor 912 is furnished with the second frequency converter 913, the control end of the second described frequency converter 913 is connected to the corresponding control port of described control cabinet; The second described feed assembly 92 comprises the second rotary metering dispenser 921, the 7th motor 922 and the 7th frequency converter 923, and the charging aperture of the second described rotary metering dispenser 921 is communicated with the discharging opening of corresponding dispersant dryness storehouse; The discharging opening of the second described rotary metering dispenser 921 and the second charging aperture pipeline connection of described twin (double) screw extruder 11; The output shaft of the 7th described motor 922 is connected with the power input shaft of the second described rotary metering dispenser 921, and the transmission of electricity control end of the 7th described motor 922 is furnished with the 7th frequency converter 923, the control end of the 7th described frequency converter 923 is connected to the corresponding control port of described control cabinet.
Described ultrasonic dynamic mixing assembly 4 comprises ultrasonic dynamic mixer 43, the 3rd motor 44, the 3rd frequency converter 42 and cooling device 41, the charging aperture of described ultrasonic dynamic mixer 43 and the discharging opening pipeline connection of described twin (double) screw extruder 11, the power intake of described ultrasonic dynamic mixer 43 is connected with the clutch end of the 3rd described motor 44, and the control end of the 3rd described motor 44 is connected with the signal output part of the 3rd described frequency converter 42.
Described pelletizing assembly 5 comprises pelleter 51, the 4th motor 52 and the 4th frequency converter 53, the charging aperture of described pelleter 51 is arranged on the discharge outlet of described ultrasonic dynamic mixer 43, the output of described stock-cutter 51 is communicated with the charging aperture of described dry baling press 6, the output of the 4th described motor 52 is connected with the power intake of described pelleter 51, and the control end of the 4th described motor 52 is connected with the signal output part of the 4th described frequency converter 53; The control port that the signal input part of the 4th described frequency converter 53 is corresponding to described control cabinet is connected.
A described melt pipe 71 is furnished with corresponding measuring pump 72, and the power intake of described measuring pump 72 is connected with the output shaft of the 5th motor 73, the control end of the 5th described motor 73 is connected with the signal output part of the 5th frequency converter 75 of configuration second speed display 74; The control port that the signal input part of the 5th described frequency converter 75 is corresponding to described control cabinet is connected.
Described powder drying storehouse 22 and described dispersant dryness storehouse 32 are all jacket type structure, second temperature controller 221 is set in the chuck in wherein said powder drying storehouse 22,3rd temperature controller 321 is set in the chuck of described dispersant dryness storehouse 32, the inner chamber of powder drying storehouse 22 and dispersant dryness storehouse 32 is all furnished with corresponding paddle (222,322), and the output shaft of paddle upper end and corresponding motor (223,323) is connected; Described powder drying storehouse 22 is furnished with corresponding level sensor (224 to described dispersant dryness storehouse 32 top, 324), described powder drying 22 bottom and described dispersant dryness storehouse 32 bottom are furnished with the low report inductor of corresponding liquid level (225,325); Described powder drying storehouse 22, described dispersant drying 32 are communicated with vacuum system 10 respectively by pipeline, ensure the vacuum of powder drying storehouse 22 and dispersant dryness storehouse 32; Pipeline between described auxiliary material powder material warehouse 21 and described powder drying storehouse 22, pipeline between described dispersant feed bin 31 and described dispersant dryness storehouse 32, is all furnished with corresponding control valve with on the pipeline that vacuum system 10 is connected; Described powder drying storehouse 22, described dispersant dryness storehouse 32 configure corresponding second pressure controller (226,326) respectively.
Described discharging assembly 8 comprises discharging pump 81, the 6th motor 82 and the 6th frequency converter 83, the power intake of described discharging pump 81 is connected with the output shaft of the 6th motor 82, and the control end of the 6th described motor 82 is connected with the signal output part of the 6th frequency converter 83 of configuration the 3rd speed display 84; The signal input part of the 6th described frequency converter 83 is connected with the 3rd corresponding pressure controller 85 signal.
Auxiliary material in described auxiliary material powder material warehouse 21 is delustering agent.
In addition, with reference to Fig. 1, traditional equipment is: main melt pipe 1 ＇ charging aperture is connected with discharging pump 2 ＇, the discharging opening of main melt pipe 1 ＇ is connected with pelleter 3 ＇ charging aperture pipeline, then after super-dry 4 ＇ and concentrated 5 ＇ of solid phase, section flour mill 6 ＇ is entered from out the section of pelleter 3 ＇ discharging opening, flour mill 6 ＇ piece mouth of now cutting into slices is communicated with the charging aperture of section filler bin 7 ＇, section filler bin 7 ＇ discharge outlet configuration first set rotary metering dispenser 8 ＇; Dispersant is added in the ＇ of dispersant auxiliary material storehouse 9, dispersant auxiliary material storehouse 9 ＇ discharging opening and dispersant feed bin 10 ＇ charging aperture pipeline connection, dispersant feed bin 10 ＇ discharge outlet configuration second cover rotary metering dispenser 11 ＇; Delustering agent is added in the ＇ of powder auxiliary material storehouse 12, and the discharging opening of powder auxiliary material storehouse 12 ＇ and powder material warehouse 13 ＇ charging aperture pipeline connection, powder material warehouse 13 ＇ discharge outlet configures the 3rd cover rotary metering dispenser 14 ＇ equally, the raw material of the discharging opening discharge of three covers rotary metering dispenser (8 ＇, 11 ＇, 14 ＇) adds the charging aperture place of twin (double) screw extruder 15 ＇ simultaneously by pipeline, and twin (double) screw extruder 15 ＇ discharging opening and second overlaps pelleter 16 ＇ charging aperture to be connected, the second cover pelleter 16 ＇ discharging opening is connected with dry baling press 17 ＇; Pipeline, the pipeline between powder auxiliary material storehouse 12 ＇ and powder material warehouse 13 ＇ and the pipeline between dispersant auxiliary material storehouse 9 ＇ and dispersant feed bin 10 ＇ of wherein cutting into slices between flour mill 6 ＇ to section filler bin 7 ＇ are furnished with corresponding feed valve (20 ＇, 18 ＇, 19 ＇) respectively, and three covers rotary metering dispenser (8 ＇, 11 ＇, 14 ＇) are controlled by control cabinet simultaneously;
In accompanying drawing 1,2:
for motor;
for temperature controls;
for Stress control;
for Liquid level;
for rotating speed display;
for the low report of liquid level.
The conventional master batch of embodiment 3 is produced and is produced master batch with melt and contrast
1, conventional master batch produces case: carrier PET, matt master, output 3 tons/day:
It is the sticky section of PET height (this section is made through polymerization, pelletizing, drying, solid phase polycondensation) that master batch factory buys carrier, and viscosity is 0.82dl/g.Carrier is first about diameter about 500 order worn into by flour mill.Utilize powder metering that 40% delustering agent (TiO2), 59% support powder and 1% dispersant are sent into twin (double) screw extruder (draw ratio is 44), twin-screw rotating speed is 300rpm, from screw extruder melt out through water-cooled, pelletizing and dry and packaging, master batch viscosity 0.40dl/g.
2, melt produces master batch case: carrier PET, matt master, output 3 tons/day:
Introducing viscosity from main melt pipe is the melt of 0.62dl/g, introduce melt first through measuring pump metering, metering signal delivers to delustering agent tropometer measuring device and dispersant tropometer measuring device, three kinds of compositions be set as melt 70% by weight proportion, delustering agent 29%, dispersant is 1%.Under negative pressure state, enter twin (double) screw extruder (draw ratio is 35), twin (double) screw extruder is not to run higher than 100rpm speed, to control the outlet pressure (Stress control is at 3.0MPa) of screw rod simultaneously.First carry out efficiently blended (supersonic frequency is 100,000 Hz, dynamic mixer rotating speed 35rpm) through ultrasonic dynamic mixer from screw extruder melt out.Mixed melt enters after tank cools through hole, Cast Strip and sends into pelleter pelletizing, and pelleter rotating speed is controlled by measuring pump signal, to ensure that particle size is homogeneous.Pack after carrying out drying after pelletizing completes.
For reducing powder reuniting, and reduce melt viscosity as far as possible and fall, vacuum and heating drying is carried out to delustering agent and dispersant, while raising is dispersed, also can reduce air and moisture enters twin-screw, reduce viscosity and fall.
Content described in this description embodiment is only enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also comprises those skilled in the art and conceives the equivalent technologies means that can expect according to the present invention.
Claims (10)
1. PET melt directly mixes the method producing master batch, comprises the steps:
It is the melt of 0.62-0.65dl/g that step 1. introduces viscosity from the main melt pipe of PET, is proportionally mixed into delustering agent and dispersant, obtains compound, described melt: delustering agent: the mass ratio of dispersant is 1:0.19 ~ 0.49:0.005 ~ 0.2; Described melt is PET melt, and described delustering agent is titanium dioxide, and described dispersant is titanate coupling agent;
The compound that step 1 obtains by step 2. enters twin (double) screw extruder under negative pressure state, and reach 10MPa ~ 15MPa condition at melt pressure and carry out just mixed formation just consolute body, the rotating speed of wherein said twin (double) screw extruder is 80 ~ 150rpm;
Step 3. carries out blendedly obtaining miscible body from twin (double) screw extruder first consolute body out through ultrasonic dynamic mixer;
Step 4., by pelletizing after ultrasonic dynamic mixer miscible body water-cooled out, drying, packing, makes corresponding master batch.
2. the method for claim 1, is characterized in that: in step 1, the mass ratio of melt, delustering agent and dispersant is: 50:49:1; Twin (double) screw extruder draw ratio in step 2 is 35; The supersonic frequency of the ultrasonic dynamic mixer of step 3 is 100,000-20 ten thousand Hz, and rotating speed is 30-50rpm.
3. the special equipment of the method for claim 1, it is characterized in that: comprise extruder assembly, auxiliary material storehouse assembly, dispersant feed bin assembly, ultrasonic dynamic mixing assembly, pelletizing assembly, dry baling press and control cabinet, main melt pipe is connected on the discharging opening of discharging assembly, described main melt pipe is by propping up the first charging aperture pipeline communication of melt pipe and described extruder assembly, the discharging opening of described auxiliary material storehouse assembly configures the first feed assembly, the discharging opening of described dispersant feed bin assembly configures the second feed assembly, and the discharging opening of the first feed assembly, second feed assembly all with the second charging aperture pipeline connection of described extruder assembly, extruder assembly discharging opening and the described ultrasonic dynamic charging aperture pipeline connection mixing assembly, the discharge outlet of described ultrasonic dynamic mixing assembly is furnished with cooling device for cooling and pelletizing assembly, the discharge outlet of described pelletizing assembly is furnished with dry baling press, the control end of described auxiliary material storehouse assembly, dispersant feed bin assembly, pelletizing assembly is connected to the corresponding control end signal of described control cabinet respectively,
Described extruder assembly comprises twin (double) screw extruder, the first frequency converter, the first motor and the first pressure controller, is furnished with the first temperature controller in the chuck of described twin (double) screw extruder; Described twin (double) screw extruder arranges the first charging aperture, the second charging aperture and extruder assembly discharging opening, and the first described pressure controller is arranged on the pipeline of described extruder assembly discharge outlet; The output shaft of the first described motor is connected with the power intake of described twin (double) screw extruder, and the transmission of electricity control end of the first described motor is furnished with the first frequency converter; The first described frequency converter is furnished with corresponding first rotational speed governor; The signal feedback end of the first described pressure controller is connected with the signal feedback end of the first described frequency converter;
Described auxiliary material storehouse assembly comprises auxiliary material powder material warehouse, powder drying storehouse and the first feed assembly, the discharging opening of described auxiliary material powder material warehouse and the charging aperture pipeline connection in described powder drying storehouse, the discharging opening in described powder drying storehouse and the charging aperture pipeline connection of the first described feed assembly, the discharging opening of the first described feed assembly and the second charging aperture pipeline connection of described twin (double) screw extruder;
Described dispersant feed bin assembly comprises dispersant feed bin, dispersant dryness storehouse and the second feed assembly, the discharging opening of described dispersant feed bin and the charging aperture pipeline connection of described dispersant dryness storehouse, the discharging opening of described dispersant dryness storehouse and the charging aperture pipeline connection of the second described feed assembly, the discharging opening of the second described feed assembly and the second charging aperture pipeline connection of described twin (double) screw extruder;
The control end of the first described feed assembly, the control end of the second described feed assembly, the control port signal that the control end of described pelletizing assembly is corresponding to described control cabinet respectively connect.
4. the special equipment of method as claimed in claim 3, it is characterized in that: the first described feed assembly comprises the first rotary metering dispenser, the second motor and the second frequency converter, the charging aperture of the first described rotary metering dispenser is communicated with the discharging opening in corresponding powder drying storehouse; The discharging opening of the first described rotary metering dispenser and the second charging aperture pipeline connection of described twin (double) screw extruder; The output shaft of the second described motor is connected with the power input shaft of described rotary metering dispenser, and the transmission of electricity control end of the second described motor is furnished with the second frequency converter, the control end of the second described frequency converter is connected to the corresponding control port of described control cabinet; The second described feed assembly comprises the second rotary metering dispenser, the 7th motor and the 7th frequency converter, and the charging aperture of the second described rotary metering dispenser is communicated with the discharging opening of corresponding dispersant dryness storehouse; The discharging opening of the second described rotary metering dispenser and the second charging aperture pipeline connection of described twin (double) screw extruder; The output shaft of the 7th described motor is connected with the power input shaft of the second described rotary metering dispenser, and the transmission of electricity control end of the 7th described motor is furnished with the 7th frequency converter, the control end of the 7th described frequency converter is connected to the corresponding control port of described control cabinet.
5. the special equipment of method as claimed in claim 3, it is characterized in that: described ultrasonic dynamic mixing assembly comprises ultrasonic dynamic mixer, the 3rd motor, the 3rd frequency converter and cooling device, the charging aperture of described ultrasonic dynamic mixer and the discharging opening pipeline connection of described twin (double) screw extruder, the power intake of described ultrasonic dynamic mixer is connected with the clutch end of the 3rd described motor, and the control end of the 3rd described motor is connected with the signal output part of the 3rd described frequency converter.
6. the special equipment of method as claimed in claim 3, it is characterized in that: described pelletizing assembly comprises pelleter, the 4th motor and the 4th frequency converter, the charging aperture of described pelleter is arranged on the discharge outlet of described ultrasonic dynamic mixer, the output of described stock-cutter is communicated with the charging aperture of described dry baling press, the output of the 4th described motor is connected with the power intake of described pelleter, and the control end of the 4th described motor is connected with the signal output part of the 4th described frequency converter; The control port that the signal input part of the 4th described frequency converter is corresponding to described control cabinet is connected.
7. the special equipment of method as claimed in claim 3, it is characterized in that: a described melt pipe is furnished with corresponding measuring pump, and the power intake of described measuring pump is connected with the output shaft of the 5th motor, the control end of the 5th described motor is connected with the signal output part of the 5th frequency converter of configuration second speed display; The control port that the signal input part of the 5th described frequency converter is corresponding to described control cabinet is connected.
8. the special equipment of method as claimed in claim 3, it is characterized in that: described powder drying storehouse and described dispersant dryness storehouse are all jacket type structure, in the chuck in wherein said powder drying storehouse, the second temperature controller is set, 3rd temperature controller is set in the chuck of described dispersant dryness storehouse, the inner chamber of powder drying storehouse and dispersant dryness storehouse is all furnished with corresponding paddle, and paddle upper end is connected with the output shaft of corresponding motor; Described powder drying storehouse is furnished with corresponding level sensor to described dispersant dryness storehouse top, and described bottom, powder drying storehouse and described dispersant dryness storehouse bottom are furnished with the low report inductor of corresponding liquid level; Described powder drying storehouse, described dispersant dryness storehouse are communicated with vacuum system respectively by pipeline, ensure the vacuum of powder drying storehouse and dispersant dryness storehouse; Pipeline between described auxiliary material powder material warehouse and described powder drying storehouse, pipeline between described dispersant feed bin and described dispersant dryness storehouse, the pipeline that is connected with vacuum system is all furnished with corresponding control valve; Described powder drying storehouse, described dispersant dryness storehouse configure corresponding pressure controller respectively.
9. the special equipment of method as claimed in claim 3, it is characterized in that: described discharging assembly comprises discharging pump, the 6th motor and the 6th frequency converter, the power intake of described discharging pump is connected with the output shaft of the 6th motor, and the control end of the 6th described motor is connected with the signal output part of the 6th frequency converter of configuration the 3rd speed display; The signal input part of the 6th described frequency converter is connected with the 3rd corresponding pressure controller signal.
10. the special equipment of method as claimed in claim 8, is characterized in that: the auxiliary material in described auxiliary material feed bin is delustering agent.
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| CN201610065968.1A CN105563683B (en) | 2016-01-29 | 2016-01-29 | The method and its special equipment of master batch are produced in a kind of directly mixing of PET melt |
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| CN105563683B (en) | 2018-03-20 |
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Effective date of registration: 20220926 Address after: No. 188, Development Avenue, Economic Development Zone, Xinyi City, Xuzhou City, Jiangsu Province, 221400 Patentee after: Xinfengming Jiangsu Xintuo New Materials Co.,Ltd. Address before: No. 888, Desheng Road, Zhouquan Town, Tongxiang City, Hangzhou City, Zhejiang Province 314500 Patentee before: TONGXIANG ZHONGCHEN CHEMICAL FIBRE Co.,Ltd. |