CN109535559A - A kind of polypropylene direct injection molding efficient enhanced flame retarding function master batch and preparation method thereof - Google Patents
A kind of polypropylene direct injection molding efficient enhanced flame retarding function master batch and preparation method thereof Download PDFInfo
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- CN109535559A CN109535559A CN201811429217.9A CN201811429217A CN109535559A CN 109535559 A CN109535559 A CN 109535559A CN 201811429217 A CN201811429217 A CN 201811429217A CN 109535559 A CN109535559 A CN 109535559A
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Abstract
The invention belongs to modifying plastics and processing technique field more particularly to a kind of efficient enhanced flame retarding function master batches and preparation method thereof that may be directly applied to polypropylene articles injection moulding processing；The functional agglomerate is composed of two kinds of master batches of A and B, and the mass percentage composition of A master batch is as follows: 50.0~70.0 wt.% of glass fibre, 15.0~35.0 wt.% of high flow polypropylene, elastic from 5.0~10.0wt.% of aggressiveness, 3.0~6.0 wt.% of random polypropylene, 1.0~3.0 wt.% of maleic anhydride inoculated polypropylene, 1.0~3.0 wt.% of polytetrafluoroethylene (PTFE) powder, 0.1~0.3 wt.% of antioxidant；Functional agglomerate of the invention has easy dispersion processing feature, and rear injection molding can be simply mixed according to the ratio with acrylic resin.
Description
Technical field
The invention belongs to modifying plastics and processing technique field more particularly to one kind may be directly applied to polypropylene articles note
Penetrate the efficient enhanced flame retarding function master batch and preparation method thereof of processing and forming.
Background technique
Implementing melt blending using double screw extruder is the conventional method for implementing modifying plastics, is squeezed using parallel dual-screw
Thermoplastic can be carried out serialization melt blending extrusion with all kinds of modified additives and made by the efficiently excellent mixing efficiency of machine out
Grain, prepared modified special material will be re-used for injecting or extrusion machine-shaping goes out various products.This technology path is not only
Effectively improve the physical mechanical properties such as intensity, toughness, rigidity, creep resistance, the warp resistance of plastic products, but also can
Assign the special physical chemistry effects such as fire-retardant plastic products, conductive, thermally conductive, magnetic conduction, antistatic, antibacterial.Although the technology road
Position of mainstream is occupied in current modifying plastics manufacture field, however in the technology implementation process, all substrates resin with change
Property additive all have to pass through twin-screw extrusion and injection moulding melt-processed thermal history twice, polymer molecular chain and its correlation
Modified additive will appear different degrees of degradation, and the Long Service Life for causing plastic products final shortens.This technology road
Line also increases process-cycle and the energy consumption of modified plastics, runs counter to the basic concept of the current sustainable industrial development of green.This
Outside, for the modified additive of different shape and different materials matter there may be the greatest differences of process unit and processing technology,
Such as high temperature high shear effect can be played using twin-screw extrusion machining, the modified performances such as activeness and quietness are performed into maximum limit
Degree；And utilize the low temperature of mixer and mediate effect for a long time, can will not heatproof auxiliary agent, low melting point auxiliary agent, low bulk density it is difficult
The various additives such as feeding powder, hygroscopic auxiliary agent, liquid and colloid auxiliary agent, whisker are sufficiently mixed and are uniformly dispersed, however adopt
It then cannot achieve such processing effect with double screw extruder melting extrusion blending.
It is in the development process of current plastics modification technology field that modified plastics is prepared by the way of plastic functional master batch
An important measures.Passed through using the functional agglomerate well prepared in advance containing high concentration modified additive and plastic raw materials double
Screw extruder or mixer implement melt blending and extruding pelletization, can not only more effectively improve point of additive in the base
It dissipates property and obtains superior modified effect, additionally it is possible to which the dust pollution for reducing processing workshop is to realize that modified plastics green adds
One of important channel of work.With the rapid development of the functionalized design and technology of preparing of plastic master batch, the function of plastic master batch
It is stronger and stronger, kind is more and more abundant, application field is also constantly expanded, and the master batch applications of modifying plastics will become not
Carry out an indispensable Key Common Technologies in modified plastics cleanly production field.
Currently, the requirement to its performance carrys out higher and higher, many application fields with the continuous expansion in plastic applications field
Plastic products are needed to have multi-functionals such as high intensity, high tenacity, high temperature resistant, fire-retardant, thermally conductive, conductive and excellent comprehensive
Can, the modified additive and auxiliary agent that add various material and form are required to the preparation processing of each modified materials, this
Great challenge is proposed to conventional plastic modification technology.Although the development of plastic functional master-batch techniques provides for this challenge
Technical support, but many technical problems are still had in the actual operation process.Wherein main technical problem includes following three
Point: 1. the modified additive and auxiliary agent of unlike material and form could need to be sent out to the maximum extent using different process units and technique
Wave its respective modified effect；2. the modified additive and auxiliary agent and matrix resin of unlike material and form are in same process unit
On (double screw extruder or mixer) implement melt blending can because its mutually shear wear caused by modified performance mutually damage；3. different
The processing temperature otherness of material modified additive and auxiliary agent and matrix resin melt blending is big, if filled simultaneously in identical processing
Standby middle implementation blending can generate serious temperature mismatch problem, and modified effect is caused to be deteriorated.Such as the fire-retardant shape of enhancing
Expect modified system, when enhancing glass fibre, organic fire-retardant and inorganic fire-retarded synergist simultaneously and matrix resin in twin-screw
It, can be because of Fiber Aspect Ratio caused by wearing each other between fiber and inorganic particulate when carrying out melt blending in extruder or mixer
It declines to a great extent, fiber-reinforcing effect is caused to be deteriorated；Fiber also can cause fire retardant to decompose with organic fire-retardant because of internal frictional heat generation,
Seriously affect flame retardant effect.In addition, fiberglass reinforced plastics modified system and the processing temperature of flame-retardant modified plastics system are deposited
In apparent difference, the processing temperature for usually enhancing modified system is 40~70 DEG C higher than the processing temperature of flame-retardant system, if
These two types of modified systems are implemented into melt blending under same process unit same process conditions, one of system will be damaged
Modification effect.Modified performance mutually damages problem between above-mentioned different additive system, at present in the high performance of plastics and more function
It is especially prominent that modification technology implementation process can be changed.
For plastics high performance and multifunction modified synchronous implementation process the problem of, invention
The thinking of double master batches is combined using function to implement the enhancing and multi-functional modified developing thought of plastics.Change for plastics
Property additive material the characteristics of, will be blended processing in there may be the additives that modified performance mutually damages to be prepared into A and two kinds of B respectively
Master batch, and the structure of the modified additive according to contained by both master batches, material and physical property feature, separately design out respective height
Dispersed system.Then two kinds of functional agglomerate synchronous applications are injection moulded in plastic products and are processed, can avoid modeling in this way
In material enhancing and functional modification process the modified additive efficiency that generates mutually damage, processing temperature mismatch problem, simultaneously
The maximum modification efficiency of unlike material modified additive and auxiliary agent is played, also can avoid traditional function master batch and matrix resin again
Extruding pelletization processing to effectively improve the effect of modifying plastics, reduce the production of production and processing period, and has saved production energy
Source consumption.This thinking will provide important approach to realize that energy-efficient green plastic is processed.
Summary of the invention
Enhanced anti-flaming polypropylene composite is a kind of dedicated grain of common modifying plastics, is widely used in industry and the people
With electronics electrical device manufacturing field.But in the processing preparation process of enhancing Flame retardant polypropylene special material, by inorganic reinforcing fiber
It is added to progress melt blending extrusion in acrylic resin simultaneously with fire retardant, it is mutual just will appear typical additive agent modified efficiency
Damage phenomenon.Difficulty is mutually damaged to solve modified performance present in existing glass-fiber reinforced Flame retardant polypropylene special material preparation process
Topic, the present invention provide a kind of efficient enhancing flame retarding function master batch that may be directly applied to polypropylene plastics products injection moulding processing
And preparation method thereof.The functional agglomerate is composed of two kinds of functional agglomerates of A and B.Wherein A master batch is mainly by glass fibre, height
Flow polypropylene and low viscoelastic body toughener composition are prepared into long fiber reinforcement plasticizing mother particle by melting pultrusion method processing；B
Master batch is mainly made of bromo- antimony compound flame retardant and ultra-dispersed vector resin, is prepared as fire-retardant master granule by mixer.With general
The method that two kinds of master batches are processed respectively can use to obtain following technical advantage: 1. avoiding glass fibre and is directly blended with bromide fire retardant
Internal frictional heat generation is generated, the decomposition of halogenated flame retardant is caused；2. avoiding inorganic fire-retarded synergist (such as antimony oxide or boric acid
Zinc) and glass fibre between because mutually shearing abrasion caused by Fiber Aspect Ratio decline to a great extent；3. solving glass fiber reinforcement
Polypropylene and two kinds of unmatched problems of modified system melt blending processing temperature of bromo- antimony compositional flame-retardant polypropylene；4. being utilized
Melting pultrusion technique prepares the enhancing master batch of Fiber Aspect Ratio bigger than traditional chopped strand glass fiber reinforcement master batch.In addition, needle
To A and B two kinds of master batches all in accordance with its loaded modified additive physical property characteristic, implement and promote its lubrication and high efficiency dispersion
Formula system design.Therefore, directly A and B master batch can be simply mixed with acrylic resin according to a certain ratio according to performance requirement
Injection molding afterwards can also increase functional agglomerate injection molding together: including but not limited to: Masterbatch, filler parent granule, toughening are female
Grain, nucleation master batch, lubrication master batch, antistatic master granule, anti-aging master batch, conductive agglomerate, heat conduction master batch, laser carving master batch, silicone are female
Grain and antibacterial matrices.Due to it is used in injection molding machine be that single screw rod melt promotes mode, the shearing to glass fibre and fire retardant
Act on it is very faint, substantially will not modification effect to the two damage.Therefore, this method not only effectively prevents glass
Fiber, because mutually damaging again by the modified performance caused by the processing of twin-screw blending extrusion, is greatly improved to poly- with fire retardant
The flame-retardant modified effect of the enhancing of propylene, at the same also make invention master batch to have a great design flexible, can be according to client's difference
It is required that carrying out more resins, the joint injection molding of more master batches, quickly, easily achieve the goal requirement, to practice the modeling that 1+1 is greater than 2
Expect modified formula and processing technology optimized design theory.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of polypropylene direct injection molding efficient enhanced flame retarding function master batch and preparation method thereof, it is characterised in that: institute
It states functional agglomerate to be composed of two kinds of master batches of A and B, the mass percentage composition of the A master batch is as follows: glass fibre 50.0~
70.0 wt.%, 15.0~35.0 wt.% of high flow polypropylene, it is elastic from 5.0~10.0wt.% of aggressiveness, random polypropylene 3.0~
6.0 wt.%, 1.0~3.0 wt.% of maleic anhydride inoculated polypropylene, 1.0~3.0 wt.% of polytetrafluoroethylene (PTFE) powder, antioxidant
The mass percentage composition of 0.1~0.3 wt.%, the B master batch are as follows: 55.0~70.0 wt.% of bromide fire retardant, inorganic resistance
It fires 15.0~30.0 wt.% of synergist, is elastic from 5.0~10.0 wt.% of aggressiveness, 2.0~5.0 wt.% of random polypropylene, dispersion
0.5~1.0 wt.% of agent, 0.2~0.5 wt.% of lubricant.
Further, the glass fibre is continuous long glass fiber.
Further, the melt flow index of the high flow polypropylene is greater than 50.0 g/10 min.
Further, it is described it is elastic from aggressiveness be the ethylene-acrylic acid copolymer bullet being crosslinked by sodium, calcium, magnesium, barium or zinc ion
Property is from aggressiveness.
Further, the antioxidant is double β-(3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) propionic ester (quotient of triethylene glycol
The name of an article be antioxidant 245) and bis- (2,4- di-tert-butyl-phenyl) pentaerythritol diphosphites (trade name antioxidant 626) press
Mass ratio is the compound of 1:1 composition.
Further, the bromide fire retardant is decabromodiphenylethane, ethyl-bis- (tetrabromo phthalimides) and bromine
Change any one or a few in polystyrene, preferably decabromodiphenylethane and ethyl-is bis- (tetrabromo phthalimide)
It is applied in combination.
Further, the inorganic fire-retarded synergist is any one in antimony oxide and zinc borate or two kinds.
Further, the dispersing agent is stearic acid, calcium stearate, zinc stearate, oleamide, one in erucamid erucyl amide
Kind is several.
Further, the lubricant is one of polyethylene wax, ethylene bis stearamide and dimethyl silicone polymer
Or two kinds.
A kind of method for preparing efficient enhanced flame retarding function master batch of polypropylene direct injection molding, the method are related to
The preparation method of A master batch and B master batch, the preparation method of the A master batch the following steps are included:
(1) weigh according to the ratio glass fibre, high flow polypropylene, it is elastic from aggressiveness, random polypropylene, maleic anhydride grafting poly- third
Powder therein and pellet are pre-mixed uniformly with super mixer respectively, and passed through by alkene, polytetrafluoroethylene (PTFE) powder and antioxidant
Major ingredient and auxiliary material hopper are added progress melt blending extrusion in double screw extruder and are prepared into composite melt；
(2) composite melt obtained in step (1) is directly squeezed by the mouth mold being connected with double screw extruder head
In the die cavity of impregnation mold, at the same time, continuous long glass fiber enters die cavity by another mouth mold of the impregnation mold,
It is impregnated in melt by the draw of die cavity inner guide wire roller, the glass fiber strand after melt impregnation is involved out of die cavity
And after cooling, the elongate in shape pellet that length is 8~12 mm is cut by pelleter, to obtain the A master batch.
Further, the barrel of double screw extruder to head temperature of each section is controlled at 185~225 DEG C, and screw speed is
150~200 revs/min；The mould-cavity temperature control of impregnation mold at 230~250 DEG C, dragger speed control 50~70 meters/
Minute.
A kind of method for preparing efficient enhanced flame retarding function master batch of polypropylene direct injection molding, the method are related to
The preparation method of A master batch and B master batch, the preparation method of the B master batch the following steps are included:
(1) bromide fire retardant, inorganic fire-retarded synergist, elastic from aggressiveness, random polypropylene, dispersing agent and lubrication is weighed according to the ratio
Agent, and put into be transferred to after mixing in mixer in super mixer and carry out hot milling, obtain bulk blend；
(2) the bulk blend obtained in step (1) is fed into single screw extrusion machine by taper feeder, is squeezed out simultaneously through melting
It is granulated, obtains the B master batch.
Further, the melting temperature of mixer is 100~125 DEG C, and mixing time is 15~20 minutes；Single screw rod squeezes out
The screw speed of machine is 150~200 revs/min, and barrel temperature is 150~160 DEG C.
It is using the beneficial effect of technical solution of the present invention:
It (1) is that the method processed using A master batch and B master batch separate machined is prepared respectively for the physical property feature of modified additive
Long glass fibres enhancing master batch (A master batch) and bromo- antimony compositional flame-retardant master batch (B master batch), effectively prevent polypropylene and glass
When fiber and the direct melt blending of bromine/stibium flame retardancy agent squeeze out, because the modified performance that mutually shearing and abrasion generate mutually damages, while
Solve two unmatched technical problems of modified system processing temperature, so that it is respective to significantly improve two kinds of modified additives
Modified performance.
(2) the long master batch of glass fiber reinforcement (A master batch) is prepared by using continuous fiber pultrusion technique, ratio can be obtained
The bigger Fiber Aspect Ratio of traditional chopped strand glass fiber reinforcement master batch, to greatly improve the enhancing efficiency of glass fibre.
(3) using high flow polypropylene, it is elastic from aggressiveness, random polypropylene and maleic anhydride inoculated polypropylene as glass
The joint vector of fiber reinforcement master batch can not only effectively increase glass fibre and polyacrylic interface adhesion, moreover it is possible to utilize
The high flow behavior of these carriers makes the A master batch of preparation when for product injection machine-shaping, and glass fibre is in polypropylene tree
Superior dispersion effect is obtained in aliphatic radical body.
(4) using the super lubricating action of polytetrafluoroethylene (PTFE) powder in A formula of master batch, melt polypropylene can be effectively improved to glass
The effect of impregnation of glass fibre bundle；And when A master batch and B master batch combined application are after polypropylene articles, polytetrafluoroethylene (PTFE) powder is again
The effect of anti-dripping agent can be played during product burns, improve the flame retardant property of product, thus obtain kill two birds with one stone change
Property effect.
(5) equally using excellent elastic of mobile performance from aggressiveness and random polypropylene as the connection for preparing B master batch
Carrier is closed, from when A master batch and B master batch being made to be provided commonly for polypropylene plastics products direct injection processing and forming, variety classes are modified
Additive can obtain evenly dispersed effect in resin matrix.And it is used as A master batch and B female simultaneously from aggressiveness using elastic
The carrier component of grain, is not only able to provide excellent dispersibility for modified additive using its high fluidity, moreover it is possible to play to poly-
The good toughening effect of propylene.
(6) efficient enhanced flame retarding function master batch of the invention is ingenious to have used two compared with conventional plastic functional agglomerate
The combination of kind different function master batch is processed respectively, not only solves different additions in modified plastics preparation process
The problem that agent modified performance mutually damages, produces the modified effect that 1+1 is much larger than 2, also has easily dispersion easy processing feature, can basis
The performance requirement of polypropylene plastics products, after A master batch and B master batch are simply mixed with acrylic resin according to a certain ratio, directly
Injection moulding applied to plastic products is processed.Due to it is used in injection molding machine be that single screw rod melt promotes mode, to glass fibers
The shear action of peacekeeping fire retardant is very faint, substantially will not modification effect to the two damage, so as to avoid routine
Matrix resin and modified master batch during modifying plastics be secondary or the multiple melting mixing by processing equipment caused by resist
Oxygen agent loss, the loss of reinforcing fiber draw ratio and matrix resin thermal cracking problem, significantly improve the mechanicalness of polypropylene articles
It can and be used for a long time.
(7) present invention enhances flame-retardant modified efficiency simultaneously effectively improving polypropylene, simplify modifying plastics procedure of processing,
Reduce the process-cycle, reduce energy consumption, improve production efficiency, is truly realized green chemical industry idea of development.Of the invention
Combination type functional master batch can flexibly deploy A master batch and B according to customer requirement in polypropylene plastics products process of injection molding
The combination of master batch and its its performance and cost are adjusted with the proportion of resin raw material.Methods and techniques of the invention can be extensive
Injection moulding and high performance and functional modification integration processing applied to all kinds of polypropylene plastics products.
Specific embodiment
The following examples can make those skilled in the art that the present invention be more fully understood, but these embodiments are not
Limiting the scope of the invention." one embodiment " or " embodiment " referred to herein, which refers to, may be included in the present invention at least
A particular feature, structure, or characteristic in one implementation.In the present specification different places occur " in one embodiment
In " the same embodiment not is referred both to, nor the individual or selective embodiment mutually exclusive with other embodiments.
Embodiment 1
A kind of molding of polypropylene direct injection efficient enhanced flame retarding function master batch, including A master batch and B master batch, A master batch
Raw material mass mixture ratio is as follows:
| Glass fibre | 70.0 kg |
| High flow polypropylene | 15.0 kg |
| Sodium ion cross-linked ethylene-acrylic acid copolymer elasticity is from aggressiveness | 8.0 kg |
| Random polypropylene | 4.0 kg |
| Maleic anhydride inoculated polypropylene | 1.0 kg |
| Polytetrafluoroethylene (PTFE) powder | 1.7 kg |
| Antioxidant | 300.0 g |
Antioxidant is preferably double β-(3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) propionic ester (the trade name antioxidant of triethylene glycol
245) and bis- (2,4- di-tert-butyl-phenyl) pentaerythritol diphosphites (trade name antioxidant 626) are 1:1 in mass ratio
The compound of composition.
The raw material mass mixture ratio of its B master batch is as follows:
| Decabromodiphenylethane | 40.0 kg |
| Ethyl-is bis- (tetrabromo phthalimide) | 30.0 kg |
| Antimony oxide | 15.0 kg |
| Sodium ion cross-linked ethylene-acrylic acid copolymer elasticity is from aggressiveness | 10.0 kg |
| Random polypropylene | 4.0 kg |
| Stearic acid | 500.0 g |
| Ethylene bis stearamide | 500.0 g |
A master batch the preparation method is as follows: all raw materials are weighed by above-mentioned quality proportioning requirement, then by high flow polypropylene, sodium
Ionomer ethylene-acrylic acid copolymer elasticity is from three kinds of material grains of aggressiveness and maleic anhydride inoculated polypropylene and random polypropylene, poly-
Three kinds of powders of tetrafluoroethene powder and antioxidant put into different high-speed mixers respectively and are uniformly mixed, then the grain that will be mixed
Material mixture and powders mixture pass through major ingredient respectively and auxiliary material hopper is added in double screw extruder and carries out melt blending extrusion
It is prepared into composite melt, barrel to the head temperature of each section of double screw extruder is controlled at 185~225 DEG C, and screw speed is
200 revs/min, then the composite melt is directly squeezed into impregnation mold by the mouth mold being connected with double screw extruder head
Die cavity in, at the same time, continuous long glass fiber (direct yarn) is entered into mould by another mouth mold of the impregnation mold
Chamber is impregnated in melt by the draw of die cavity inner guide wire roller, and the mould-cavity temperature of impregnation mold controls the traction at 245 DEG C
Machine speed control is at 70 ms/min, however the glass fiber strand after melt impregnation involves and after cooling out of die cavity, leads to
It crosses pelleter and is cut into the elongate in shape pellet that length is 10 mm, to obtain the A master batch.
B master batch the preparation method is as follows: weigh all raw materials by above-mentioned quality proportioning requirement, and put into mixed at high speed
It is transferred to after mixing in device in mixer and carries out hot milling, the melting temperature of mixer is 125 DEG C, and mixing time is 15 points
Clock feeds single screw extrusion machine by taper feeder, squeezes out and be granulated through melting, obtain then by acquired bulk blend
Obtain the B master batch；The screw speed of single screw extrusion machine is 170 revs/min, and barrel temperature Discrete control is at 150~160 DEG C.
Embodiment 2
A kind of molding of polypropylene direct injection efficient enhanced flame retarding function master batch, including A master batch and B master batch, A master batch
Raw material mass mixture ratio is as follows:
| Glass fibre | 50.0 kg |
| High flow polypropylene | 35.0 kg |
| Zinc ion cross-linked ethylene-acrylic acid copolymer elasticity is from aggressiveness | 7.0 kg |
| Random polypropylene | 5.0 kg |
| Maleic anhydride inoculated polypropylene | 1.5 kg |
| Polytetrafluoroethylene (PTFE) powder | 1.2 kg |
| Antioxidant | 300.0 g |
Antioxidant is preferably double β-(3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) propionic ester (the trade name antioxidant of triethylene glycol
245) and bis- (2,4- di-tert-butyl-phenyl) pentaerythritol diphosphites (trade name antioxidant 626) are 1:1 in mass ratio
The compound of composition.
The raw material mass mixture ratio of its B master batch is as follows:
| Decabromodiphenylethane | 35.0 kg |
| Brominated Polystyrene | 20.0 kg |
| Antimony oxide | 20.0 kg |
| Zinc borate | 10.0 kg |
| Zinc ion cross-linked ethylene-acrylic acid copolymer elasticity is from aggressiveness | 8.5 kg |
| Random polypropylene | 5.0 kg |
| Oleamide | 1.0 kg |
| Polyethylene wax | 500.0 g |
A master batch the preparation method is as follows: all raw materials are weighed by above-mentioned quality proportioning requirement, then by high flow polypropylene, zinc
Ionomer ethylene-acrylic acid copolymer elasticity is from three kinds of material grains of aggressiveness and maleic anhydride inoculated polypropylene and random polypropylene, poly-
Three kinds of powders of tetrafluoroethene powder and antioxidant put into different high-speed mixers respectively and are uniformly mixed, then the grain that will be mixed
Material mixture and powders mixture pass through major ingredient respectively and auxiliary material hopper is added in double screw extruder and carries out melt blending extrusion
It is prepared into composite melt, barrel to the head temperature of each section of double screw extruder is controlled at 185~225 DEG C, and screw speed is
180 revs/min, then the composite melt is directly squeezed into impregnation mold by the mouth mold being connected with double screw extruder head
Die cavity in, at the same time, continuous long glass fiber (direct yarn) is entered into mould by another mouth mold of the impregnation mold
Chamber is impregnated in melt by the draw of die cavity inner guide wire roller, and the mould-cavity temperature of impregnation mold controls the traction at 230 DEG C
Machine speed control is at 65 ms/min, however the glass fiber strand after melt impregnation involves and after cooling out of die cavity, leads to
It crosses pelleter and is cut into the elongate in shape pellet that length is 12 mm, to obtain the A master batch.
B master batch the preparation method is as follows: weigh all raw materials by above-mentioned quality proportioning requirement, and put into mixed at high speed
It is transferred to after mixing in device in mixer and carries out hot milling, the melting temperature of mixer is 110 DEG C, and mixing time is 20 points
Clock feeds single screw extrusion machine by taper feeder, squeezes out and be granulated through melting, obtain then by acquired bulk blend
Obtain the B master batch；The screw speed of single screw extrusion machine is 160 revs/min, and barrel temperature Discrete control is at 150~160 DEG C.
Embodiment 3
A kind of molding of polypropylene direct injection efficient enhanced flame retarding function master batch, including A master batch and B master batch, A master batch
Raw material mass mixture ratio is as follows:
| Glass fibre | 60.0 kg |
| High flow polypropylene | 28.0 kg |
| Calcium ion crosslinking ethylene-acrylic acid copolymer elasticity is from aggressiveness | 5.7 kg |
| Random polypropylene | 3.0 kg |
| Maleic anhydride inoculated polypropylene | 2.0 kg |
| Polytetrafluoroethylene (PTFE) powder | 1.0 kg |
| Antioxidant | 300.0 g |
Antioxidant is preferably double β-(3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) propionic ester (the trade name antioxidant of triethylene glycol
245) and bis- (2,4- di-tert-butyl-phenyl) pentaerythritol diphosphites (trade name antioxidant 626) are 1:1 in mass ratio
The compound of composition.
The raw material mass mixture ratio of its B master batch is as follows:
| Decabromodiphenylethane | 40.0 kg |
| Ethyl-is bis- (tetrabromo phthalimide) | 30.0 kg |
| Antimony oxide | 15.0 kg |
| Calcium ion crosslinking ethylene-acrylic acid copolymer elasticity is from aggressiveness | 10.0 kg |
| Random polypropylene | 4.0 kg |
| Zinc stearate | 800.0 g |
| Dimethyl silicone polymer | 200.0 g |
A master batch the preparation method is as follows: all raw materials are weighed by above-mentioned quality proportioning requirement, then by high flow polypropylene, calcium
Ionomer ethylene-acrylic acid copolymer elasticity is from three kinds of material grains of aggressiveness and maleic anhydride inoculated polypropylene and random polypropylene, poly-
Three kinds of powders of tetrafluoroethene powder and antioxidant put into different high-speed mixers respectively and are uniformly mixed, then the grain that will be mixed
Material mixture and powders mixture pass through major ingredient respectively and auxiliary material hopper is added in double screw extruder and carries out melt blending extrusion
It is prepared into composite melt, barrel to the head temperature of each section of double screw extruder is controlled at 185~225 DEG C, and screw speed is
160 revs/min, then the composite melt is directly squeezed into impregnation mold by the mouth mold being connected with double screw extruder head
Die cavity in, at the same time, continuous long glass fiber (direct yarn) is entered into mould by another mouth mold of the impregnation mold
Chamber is impregnated in melt by the draw of die cavity inner guide wire roller, and the mould-cavity temperature of impregnation mold controls the traction at 240 DEG C
Machine speed control is at 70 ms/min, however the glass fiber strand after melt impregnation involves and after cooling out of die cavity, leads to
It crosses pelleter and is cut into the elongate in shape pellet that length is 10 mm, to obtain the A master batch.
B master batch the preparation method is as follows: weigh all raw materials by above-mentioned quality proportioning requirement, and put into mixed at high speed
It is transferred to after mixing in device in mixer and carries out hot milling, the melting temperature of mixer is 100 DEG C, and mixing time is 20 points
Clock feeds single screw extrusion machine by taper feeder, squeezes out and be granulated through melting, obtain then by acquired bulk blend
Obtain the B master batch；The screw speed of single screw extrusion machine is 150 revs/min, and barrel temperature Discrete control is at 150~160 DEG C.
Embodiment 4
A kind of molding of polypropylene direct injection efficient enhanced flame retarding function master batch, including A master batch and B master batch, A master batch
Raw material mass mixture ratio is as follows:
| Glass fibre | 65.0 kg |
| High flow polypropylene | 20.0 kg |
| Barium ions cross-linked ethylene-acrylic acid copolymer elasticity is from aggressiveness | 10.0 kg |
| Random polypropylene | 2.0 kg |
| Maleic anhydride inoculated polypropylene | 1.0 kg |
| Polytetrafluoroethylene (PTFE) powder | 1.7 kg |
| Antioxidant | 300.0 g |
Antioxidant is preferably double β-(3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) propionic ester (the trade name antioxidant of triethylene glycol
245) and bis- (2,4- di-tert-butyl-phenyl) pentaerythritol diphosphites (trade name antioxidant 626) are 1:1 in mass ratio
The compound of composition.
The raw material mass mixture ratio of its B master batch is as follows:
| Decabromodiphenylethane | 30.0 kg |
| Brominated Polystyrene | 30.0 kg |
| Antimony oxide | 17.0 kg |
| Zinc borate | 8.0 kg |
| Barium ions cross-linked ethylene-acrylic acid copolymer elasticity is from aggressiveness | 7.0 kg |
| Random polypropylene | 7.0 kg |
| Calcium stearate | 600.0 g |
| Ethylene bis stearamide | 400.0 g |
A master batch the preparation method is as follows: all raw materials are weighed by above-mentioned quality proportioning requirement, then by high flow polypropylene, barium
Ionomer ethylene-acrylic acid copolymer elasticity is from three kinds of material grains of aggressiveness and maleic anhydride inoculated polypropylene and random polypropylene, poly-
Three kinds of powders of tetrafluoroethene powder and antioxidant put into different high-speed mixers respectively and are uniformly mixed, then the grain that will be mixed
Material mixture and powders mixture pass through major ingredient respectively and auxiliary material hopper is added in double screw extruder and carries out melt blending extrusion
It is prepared into composite melt, barrel to the head temperature of each section of double screw extruder is controlled at 185~225 DEG C, and screw speed is
190 revs/min, then the composite melt is directly squeezed into impregnation mold by the mouth mold being connected with double screw extruder head
Die cavity in, at the same time, continuous long glass fiber (direct yarn) is entered into mould by another mouth mold of the impregnation mold
Chamber is impregnated in melt by the draw of die cavity inner guide wire roller, and the mould-cavity temperature of impregnation mold controls the traction at 235 DEG C
Machine speed control is at 70 ms/min, however the glass fiber strand after melt impregnation involves and after cooling out of die cavity, leads to
It crosses pelleter and is cut into the elongate in shape pellet that length is 9 mm, to obtain the A master batch.
B master batch the preparation method is as follows: weigh all raw materials by above-mentioned quality proportioning requirement, and put into mixed at high speed
It is transferred to after mixing in device in mixer and carries out hot milling, the melting temperature of mixer is 120 DEG C, and mixing time is 17 points
Clock feeds single screw extrusion machine by taper feeder, squeezes out and be granulated through melting, obtain then by acquired bulk blend
Obtain the B master batch；The screw speed of single screw extrusion machine is 185 revs/min, and barrel temperature Discrete control is at 150~160 DEG C.
Embodiment 5
A kind of molding of polypropylene direct injection efficient enhanced flame retarding function master batch, including A master batch and B master batch, A master batch
Raw material mass mixture ratio is as follows:
| Glass fibre | 55.0 kg |
| High flow polypropylene | 32.0 kg |
| Magnesium ion cross-linked ethylene-acrylic acid copolymer elasticity is from aggressiveness | 6.0 kg |
| Random polypropylene | 4.0 kg |
| Maleic anhydride inoculated polypropylene | 1.7 kg |
| Polytetrafluoroethylene (PTFE) powder | 1.0 kg |
| Antioxidant | 300.0 g |
Antioxidant is preferably double β-(3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) propionic ester (the trade name antioxidant of triethylene glycol
245) and bis- (2,4- di-tert-butyl-phenyl) pentaerythritol diphosphites (trade name antioxidant 626) are 1:1 in mass ratio
The compound of composition.
The raw material mass mixture ratio of its B master batch is as follows:
| Decabromodiphenylethane | 35.0 kg |
| Ethyl-is bis- (tetrabromo phthalimide) | 25.0 kg |
| Antimony oxide | 25.0 kg |
| Magnesium ion cross-linked ethylene-acrylic acid copolymer elasticity is from aggressiveness | 8.5 kg |
| Random polypropylene | 5.0 kg |
| Oleamide | 1.0 kg |
| Dimethyl silicone polymer | 500.0 g |
A master batch the preparation method is as follows: weigh all raw materials by above-mentioned quality proportioning requirement, then by high flow polypropylene,
Magnesium ion cross-linked ethylene-acrylic acid copolymer elasticity from three kinds of material grains of aggressiveness and maleic anhydride inoculated polypropylene and random polypropylene,
Polytetrafluoroethylene (PTFE) powder and antioxidant three kinds of powders put into different high-speed mixers respectively and are uniformly mixed, then will mix
Granule mixture and powders mixture pass through major ingredient respectively and auxiliary material hopper is added progress melt blending in double screw extruder and squeezes
It is prepared into composite melt out, barrel to the head temperature of each section of double screw extruder is controlled at 185~225 DEG C, screw speed
It is 175 revs/min, then the composite melt is directly squeezed into dipping former by the mouth mold being connected with double screw extruder head
In the die cavity of tool, at the same time, continuous long glass fiber (direct yarn) is entered by another mouth mold of the impregnation mold
Die cavity is impregnated in melt by the draw of die cavity inner guide wire roller, and the mould-cavity temperature of impregnation mold is controlled at 247 DEG C, is led
Draw machine speed control at 60 ms/min, however the glass fiber strand after melt impregnation involves and after cooling out of die cavity,
It is cut into the elongate in shape pellet that length is 9 mm by pelleter, to obtain the A master batch.
B master batch the preparation method is as follows: weigh all raw materials by above-mentioned quality proportioning requirement, and it is mixed to be put into high speed
It is transferred to after mixing in clutch in mixer and carries out hot milling, the melting temperature of mixer is 100 DEG C, mixing time 20
Minute, then by acquired bulk blend, single screw extrusion machine is fed by taper feeder, squeezes out and is granulated through melting,
Obtain the B master batch；The screw speed of single screw extrusion machine is 150 revs/min, and barrel temperature Discrete control is 150~160
℃。
Embodiment 6
A kind of molding of polypropylene direct injection efficient enhanced flame retarding function master batch, including A master batch and B master batch, A master batch
Raw material mass mixture ratio is as follows:
| Glass fibre | 65.0 kg |
| High flow polypropylene | 20.0 kg |
| Sodium ion cross-linked ethylene-acrylic acid copolymer elasticity is from aggressiveness | 6.0 kg |
| Random polypropylene | 3.0 kg |
| Maleic anhydride inoculated polypropylene | 3.0 kg |
| Polytetrafluoroethylene (PTFE) powder | 2.7 kg |
| Antioxidant | 300.0 g |
Antioxidant is preferably double β-(3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) propionic ester (the trade name antioxidant of triethylene glycol
245) and bis- (2,4- di-tert-butyl-phenyl) pentaerythritol diphosphites (trade name antioxidant 626) are 1:1 in mass ratio
The compound of composition.
The raw material mass mixture ratio of its B master batch is as follows:
| Ethyl-is bis- (tetrabromo phthalimide) | 40.0 kg |
| Brominated Polystyrene | 25.0 kg |
| Antimony oxide | 20.0 kg |
| Zinc borate | 9.0 kg |
| Sodium ion cross-linked ethylene-acrylic acid copolymer elasticity is from aggressiveness | 5.0 kg |
| Random polypropylene | 5.0 kg |
| Zinc stearate | 800.0 g |
| Ethylene bis stearamide | 200.0 g |
A master batch the preparation method is as follows: all raw materials are weighed by above-mentioned quality proportioning requirement, then by high flow polypropylene, sodium
Ionomer ethylene-acrylic acid copolymer elasticity is from three kinds of material grains of aggressiveness and maleic anhydride inoculated polypropylene and random polypropylene, poly-
Three kinds of powders of tetrafluoroethene powder and antioxidant put into different high-speed mixers respectively and are uniformly mixed, then the grain that will be mixed
Material mixture and powders mixture pass through major ingredient respectively and auxiliary material hopper is added in double screw extruder and carries out melt blending extrusion
It is prepared into composite melt, barrel to the head temperature of each section of double screw extruder is controlled at 185~225 DEG C, and screw speed is
195 revs/min, then the composite melt is directly squeezed into impregnation mold by the mouth mold being connected with double screw extruder head
Die cavity in, at the same time, continuous long glass fiber (direct yarn) is entered into mould by another mouth mold of the impregnation mold
Chamber is impregnated in melt by the draw of die cavity inner guide wire roller, and the mould-cavity temperature of impregnation mold controls the traction at 246 DEG C
Machine speed control is at 50 ms/min, however the glass fiber strand after melt impregnation involves and after cooling out of die cavity, leads to
It crosses pelleter and is cut into the elongate in shape pellet that length is 11 mm, to obtain the A master batch.
B master batch the preparation method is as follows: weigh all raw materials by above-mentioned quality proportioning requirement, and put into mixed at high speed
It is transferred to after mixing in device in mixer and carries out hot milling, the melting temperature of mixer is 125 DEG C, and mixing time is 18 points
Clock feeds single screw extrusion machine by taper feeder, squeezes out and be granulated through melting, obtain then by acquired bulk blend
Obtain the B master batch；The screw speed of single screw extrusion machine is 160 revs/min, and barrel temperature Discrete control is at 150~160 DEG C.
Glass fibre in embodiment 1-6 is continuous long glass fiber, and the melt flow index of high flow polypropylene is greater than
50.0 g/10 min。
A master batch and B master batch are mixed according to any mass ratio in the present invention, unknown between the component in remaining place in the present invention
The expression for really writing proportionate relationship exactly is able to achieve according to arbitrary proportion.
For the modified effect for verifying the efficient enhanced flame retarding function master batch of polypropylene direct injection molding prepared by the present invention
Fruit, the mass percent that A master batch prepared by embodiment 1-6 and B master batch are pressed respective 25 wt.% and acrylic resin are simultaneously
Mixing, direct injection form test bars, then carry out properties detection；At the same time, according to being obtained in embodiment 1-6
The identical component of test bars and proportion are injected, and injection molding test bars work again is blended after processing by double screw extruder
For reference examples, then its performance is detected.(wherein reference examples 1-6 is respectively all properties test result as shown in table 1
And the property of injection molding test bars again after but use twin-screw extrusion identical with proportion machines is formed in embodiment 1-6
Can).
By the reference to data in table 1 show by polypropylene direct injection prepared by above embodiments of the present invention at
The efficient enhanced flame retarding function master batch of type, it is identical in component and proportion after being applied to the molding of polypropylene direct injection
In the case of, tensile strength, notch impact strength and the flame retardant property of plastic products, hence it is evident that add better than using double screw extruder
The performance of injection moulded products again after work.Using functional agglomerate of the invention, it will not only greatly simplifie acrylic resin and change
Property procedure of processing, improve processing efficiency, reduce energy consumption, also significantly enhance modified effect, realize plastics preparation green
The sustainable development theory of processing.
Functional agglomerate direct injection forming polypropylene test bars prepared by 1 embodiment 1-6 of table and same materials formula
It is injection moulded the performance control of polypropylene test bars again through twin-screw extrusion machining.
Table 1
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff completely may be used
Without departing from the scope of the technological thought of the present invention', to carry out various changes and amendments.It is all in spirit of the invention and
Within principle, any modification, equivalent substitution, improvement and etc. done be should all be included in the protection scope of the present invention.This item hair
Bright technical scope is not limited to the contents of the specification, it is necessary to its technical model is determined according to scope of the claims
It encloses.
Claims (10)
1. a kind of efficient enhanced flame retarding function master batch of polypropylene direct injection molding, it is characterised in that: the functional agglomerate
It is composed of two kinds of master batches of A and B, the mass percentage composition of the A master batch is as follows: 50.0~70.0 wt.% of glass fibre,
15.0~35.0 wt.% of high flow polypropylene, it is elastic from 5.0~10.0wt.% of aggressiveness, 3.0~6.0 wt.% of random polypropylene,
1.0~3.0 wt.% of maleic anhydride inoculated polypropylene, 1.0~3.0 wt.% of polytetrafluoroethylene (PTFE) powder, antioxidant 0.1~0.3
Wt.%,
The mass percentage composition of the B master batch is as follows: 55.0~70.0 wt.% of bromide fire retardant, inorganic fire-retarded synergist
15.0~30.0 wt.%, it is elastic from 5.0~10.0 wt.% of aggressiveness, 2.0~5.0 wt.% of random polypropylene, dispersing agent 0.5~
1.0 wt.%, 0.2~0.5 wt.% of lubricant.
2. a kind of molding of polypropylene direct injection efficient enhanced flame retarding function master batch, feature according to claim 1
Be: the glass fibre is continuous long glass fiber, and the melt flow index of the high flow polypropylene is greater than 50.0 g/10
min。
3. a kind of molding of polypropylene direct injection efficient enhanced flame retarding function master batch, feature according to claim 1
Be: it is described it is elastic from aggressiveness be ethylene-acrylic acid copolymer elasticity for being crosslinked by sodium, calcium, magnesium, barium or zinc ion from aggressiveness.
4. a kind of molding of polypropylene direct injection efficient enhanced flame retarding function master batch, feature according to claim 1
Be: the antioxidant is double β-(3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) propionic esters of triethylene glycol and bis- (tertiary fourths of 2,4- bis-
Base phenyl) pentaerythritol diphosphites be in mass ratio 1:1 composition compound.
5. a kind of molding of polypropylene direct injection efficient enhanced flame retarding function master batch, feature according to claim 1
Be: the bromide fire retardant is in decabromodiphenylethane, ethyl-bis- (tetrabromo phthalimides) and brominated Polystyrene
Any one or a few, preferably decabromodiphenylethane and ethyl-bis- (tetrabromo phthalimides) group in any proportion
It closes and uses；The inorganic fire-retarded synergist is any one or two kinds in antimony oxide and zinc borate.
6. a kind of molding of polypropylene direct injection efficient enhanced flame retarding function master batch, feature according to claim 1
Be: the dispersing agent is one or more of stearic acid, calcium stearate, zinc stearate, oleamide, erucamid erucyl amide；Institute
Stating lubricant is one or both of polyethylene wax, ethylene bis stearamide and dimethyl silicone polymer.
7. a kind of preparation efficient enhanced flame retarding function of polypropylene direct injection molding as described in any one of claim 1-6
The method of master batch, it is characterised in that: the preparation method of the A master batch the following steps are included:
(1) weigh according to the ratio glass fibre, high flow polypropylene, it is elastic from aggressiveness, random polypropylene, maleic anhydride grafting poly- third
Powder therein and pellet are pre-mixed uniformly with super mixer respectively, and passed through by alkene, polytetrafluoroethylene (PTFE) powder and antioxidant
Major ingredient and auxiliary material hopper are added progress melt blending extrusion in double screw extruder and are prepared into composite melt；
(2) composite melt obtained in step (1) is directly squeezed by the mouth mold being connected with double screw extruder head
In the die cavity of impregnation mold, at the same time, continuous long glass fiber enters die cavity by another mouth mold of the impregnation mold,
It is impregnated in melt by the draw of die cavity inner guide wire roller, the glass fiber strand after melt impregnation is involved out of die cavity
And after cooling, the elongate in shape pellet that length is 8~12 mm is cut by pelleter, to obtain the A master batch.
8. a kind of preparation side of the efficient enhanced flame retarding function master batch of polypropylene direct injection molding according to claim 7
Method, it is characterised in that: the processing technology of the A master batch are as follows: the barrel of double screw extruder to head temperature of each section is controlled 185
~225 DEG C, screw speed is 150~200 revs/min；At 230~250 DEG C, dragger is fast for the mould-cavity temperature control of impregnation mold
Degree control is at 50~70 ms/min.
9. a kind of preparation efficient enhanced flame retarding function of polypropylene direct injection molding as described in any one of claim 1-6
The method of master batch, it is characterised in that: the preparation method of the B master batch the following steps are included:
(1) bromide fire retardant, inorganic fire-retarded synergist, elastic from aggressiveness, random polypropylene, dispersing agent and lubrication is weighed according to the ratio
Agent, and put into be transferred to after mixing in mixer in super mixer and carry out hot milling, obtain bulk blend；
(2) the bulk blend obtained in step (1) is fed into single screw extrusion machine by taper feeder, is squeezed out simultaneously through melting
It is granulated, obtains the B master batch.
10. a kind of preparation of the efficient enhanced flame retarding function master batch of polypropylene direct injection molding according to claim 9
Method, it is characterised in that: the processing technology of the B master batch are as follows: the melting temperature of mixer is 100~125 DEG C, and mixing time is
15~20 minutes；The screw speed of single screw extrusion machine is 150~200 revs/min, and barrel temperature is 150~160 DEG C.
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| CN110591228A (en) * | 2019-10-09 | 2019-12-20 | 江苏万纳普新材料科技有限公司 | Special flame-retardant synergistic functional master batch for polypropylene modification and preparation method thereof |
| CN113698633A (en) * | 2021-08-16 | 2021-11-26 | 见喜纳米材料技术研发(河南)有限公司 | Flame-retardant master batch composition with improved fluidity and preparation method thereof |
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| CN113698633A (en) * | 2021-08-16 | 2021-11-26 | 见喜纳米材料技术研发(河南)有限公司 | Flame-retardant master batch composition with improved fluidity and preparation method thereof |
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