CN107698858B - A method of fire protection flame retarding cable is prepared to be leading with liquid fire prevention thermal resistance coating - Google Patents

A method of fire protection flame retarding cable is prepared to be leading with liquid fire prevention thermal resistance coating Download PDF

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CN107698858B
CN107698858B CN201710970361.2A CN201710970361A CN107698858B CN 107698858 B CN107698858 B CN 107698858B CN 201710970361 A CN201710970361 A CN 201710970361A CN 107698858 B CN107698858 B CN 107698858B
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counterpart
thermal resistance
temperature
machine barrel
resistance coating
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CN107698858A (en
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刘铭
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JINGLAN CABLE CO., LTD.
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Jinglan Cable Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0853—Vinylacetate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09D133/10—Homopolymers or copolymers of methacrylic acid esters
    • C09D133/12—Homopolymers or copolymers of methyl methacrylate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/38—Boron-containing compounds
    • C08K2003/387—Borates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

It is the leading method for preparing fire protection flame retarding cable that the invention discloses a kind of with liquid fire prevention thermal resistance coating, wherein, including liquid fire prevention thermal resistance coating, its ingredient by percentage to the quality, including, acryl resin 25~35%, aluminium hydroxide 20~40%, zinc borate 10~25%, titanium dioxide 2~5%, triethyl phosphate 1~3%.Liquid fire prevention thermal resistance coating used in the present invention is halogen-free, no asbestos, is free of inorfil, has flexible after dry.

Description

A method of fire protection flame retarding cable is prepared to be leading with liquid fire prevention thermal resistance coating
Technical field
The invention belongs to cable preparing technical fields, and in particular to a kind of anti-for leading preparation with liquid fire prevention thermal resistance coating The method of fiery flame retardant cable.
Background technology
Wires and cables industry is the second largest industry that China is only second to automobile industry, product variety Service Efficiency and domestic market More than 90%, China has had occupation rate at present as one of cable products development ＆ production base most important in the world One system such as flame-retardant, high temperature resistant low-temperature resistance, low inductance low noise, environmentally protective, low smoke and zero halogen, antitermite protection against rodents, waterproof and dampproof The cable products of unique energy and special construction are arranged, and have all formd certain productivity.As society is to security protection It ensures the continuous improvement with system safety requirements, by government, industry, the extensive publicity of enterprise, promotion and cooperates, have high property The special cables product of energy and highly effective and safe will extensively be answered as western developed country in all trades and professions system With.
Just aobvious clue, domestic fire protection flame retarding cable market have been formed for the leading enterprise of country's fire protection flame retarding industry at present Several mainstream enterprises, these enterprises are extended through continuous product and channel expansion, pass through constantly improve business administration With team building, either the disturbance degree of brand or the General Promotion of product quality, service specification on increasingly Receiving to industry and user and affirmative.In the prior art, for being leading preparation fire prevention resistance with liquid fire prevention thermal resistance coating The method of combustion cable still has a large amount of technical problems, need it is a kind of it is completely new with liquid fire prevention thermal resistance coating be it is leading prepare it is anti- The method of fiery flame retardant cable.
Invention content
The purpose of this part is to summarize some aspects of the embodiment of the present invention and briefly introduce some preferably to implement Example.It may do a little simplified or be omitted to avoid our department is made in this section and the description of the application and the title of the invention Point, the purpose of abstract of description and denomination of invention it is fuzzy, and this simplification or omit and cannot be used for limiting the scope of the invention.
In view of it is above-mentioned and/or it is existing with liquid fire prevention thermal resistance coating be dominate prepare fire protection flame retarding cable method technology Blank, it is proposed that the present invention.
Therefore, the purpose of the present invention is to solve deficiency in the prior art, provide one kind is with liquid fire prevention thermal resistance coating The leading method for preparing fire protection flame retarding cable.
In order to solve the above technical problems, the present invention provides following technical solutions：One kind with liquid fire prevention thermal resistance coating be The leading method for preparing fire protection flame retarding cable, including, composition of raw materials gross mass is 100%, by percentage to the quality, including second Miscellaneous -10- phospho hetero phenanthrenes -10- the oxidations of alkene-vinyl acetate co-polymer 20~30%, polyethylene 8~14%, 9,10- dihydro-9-oxies Object 30~40%, 1,3,5- triallyls-guanamine, 4,6- triketones 10~20%, aluminium hydroxide 2~15%, initiator 0.5 ~3% and antioxygen auxiliary agent 0.3~0.5%；By the miscellaneous -10- phospho hetero phenanthrenes -10- oxides of 9,10- dihydro-9-oxies, 1,3,5- triolefins In propyl-guanamine, 4,6- triketones and the composition of raw materials in 40~60% input reaction kettles of initiator quality, stand To room temperature, impurity elimination is ground into powder fire retardant；By obtained powder fire retardant and polyethylene, ethylene-vinyl acetate copolymer, Aluminium hydroxide, anti-oxidant auxiliary agent, remaining initiator are kneaded in mixer to 155~165 DEG C, form jelly；By jelly It puts into single screw extrusion machine and squeezes out, it is air-cooled, it squeezes line machine into electric wire and squeezes out, be coated on conductor thread core, cable is made, Then on the cables by liquid fire prevention thermal resistance coating application；The liquid fire prevention thermal resistance coating, ingredient is with quality percentage Than meter, including, acryl resin 25~35%, aluminium hydroxide 20~40%, zinc borate 10~25%, titanium dioxide 2~5%, Triethyl phosphate 1~3%.
As it is of the present invention with liquid fire prevention thermal resistance coating be a kind of excellent of the leading method for preparing fire protection flame retarding cable Scheme is selected, wherein：The antioxygen auxiliary agent is four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters, N, N'- Bis- [3- (3,5- di-tert-butyl-hydroxy phenyls) propionyl] hydrazines and the [N- [3- [bis- [butyl of 4,6- of N, N " ' -1,2- second diyl two (1,2,2,6,6- pentamethyl -4- piperidyls) amino] -1,3,5- triazine -2- bases] amino] propyl]-N, N "-dibutyl-N, N " - Two (1,2,2,6,6- pentamethyl -4- piperidyls) -1,3,5- triazine -2,4,6- triamines in mass ratio 1:1:1 is mixed to prepare jointly.
As it is of the present invention with liquid fire prevention thermal resistance coating be a kind of excellent of the leading method for preparing fire protection flame retarding cable Scheme is selected, wherein：The impurity elimination is ground into powder fire retardant, wherein described its grain size specification of powder fire retardant is D508~12 μ m。
As it is of the present invention with liquid fire prevention thermal resistance coating be a kind of excellent of the leading method for preparing fire protection flame retarding cable Scheme is selected, wherein：It is described to squeeze line machine extrusion into electric wire, wherein it is an area 120 that the electric wire, which squeezes line machine temperature parameter, ~130 DEG C, 130~150 DEG C of 2nd area, 145~165 DEG C of 3rd area, 145~165 DEG C of 4th area, 140~160 DEG C of head.
As it is of the present invention with liquid fire prevention thermal resistance coating be a kind of excellent of the leading method for preparing fire protection flame retarding cable Scheme is selected, wherein：The initiator includes cumyl peroxide.
As it is of the present invention with liquid fire prevention thermal resistance coating be a kind of excellent of the leading method for preparing fire protection flame retarding cable Scheme is selected, wherein：Described put into jelly in single screw extrusion machine squeezes out, wherein the single screw extrusion machine temperature ginseng Number is the first 130~145 DEG C of area, the second 130~145 DEG C of area, 130~145 DEG C of third area, 140~155 DEG C of head.
As it is of the present invention with liquid fire prevention thermal resistance coating be a kind of excellent of the leading method for preparing fire protection flame retarding cable Scheme is selected, wherein：The density of the polyethylene is 0.90~0.92g/cm3, melt index is 1.0~8.0g/10min.
As it is of the present invention with liquid fire prevention thermal resistance coating be a kind of excellent of the leading method for preparing fire protection flame retarding cable Scheme is selected, wherein：The input reaction kettle, wherein the temperature of reaction kettle is 170 DEG C~185 DEG C, pressure 1atm, agitating paddle Rotating speed is 100~150rpm, and the reaction time is 10~15min.
As it is of the present invention with liquid fire prevention thermal resistance coating be a kind of excellent of the leading method for preparing fire protection flame retarding cable Scheme is selected, wherein：The melt index of the ethylene-vinyl acetate copolymer is 2.0~8.0g/10min.
Advantageous effect possessed by the present invention：
(1) cable material made of has excellent fire prevention thermal resistance performance, and mechanical performance is also very excellent.
(2) liquid fire prevention thermal resistance coating used in is halogen-free, no asbestos, is free of inorfil, has after dry flexible Property.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this For the those of ordinary skill of field, without having to pay creative labor, it can also be obtained according to these attached drawings other Attached drawing.Wherein：
Fig. 1 is the structure function figure arrived involved in Examples 1 to 3；
Fig. 2 is the overall structure front schematic view arrived involved in Examples 1 to 3；
Fig. 3 is 100 structural schematic diagram of drive component arrived involved in Examples 1 to 3；
Fig. 4 is 200 structural schematic diagram of feed system arrived involved in Examples 1 to 3；
Fig. 5 is 500 structural schematic diagram of compression moulding system arrived involved in Examples 1 to 3；
Fig. 6 is 500 internal structure schematic diagram of compression moulding system arrived involved in embodiment 2~3；
Fig. 7 is 503 structural schematic diagram of temperature-controlling component arrived involved in embodiment 2~3；
Fig. 8 is 509 structural schematic diagram of air quantity controller arrived involved in embodiment 3；
Fig. 9 is the rebound component 509c structural schematic diagrams arrived involved in embodiment 3；
Figure 10 is 503 overall structure diagram of temperature-controlling component arrived involved in embodiment 3；
Figure 11 is 403 overall structure diagram of supporting rack arrived involved in embodiment 3；
Figure 12 is 402 overall structure diagram of second base arrived involved in embodiment 3；
Figure 13 is 404 structural schematic diagram of chuck arrived involved in embodiment 3；
Figure 14 is 405 structural schematic diagram of limit assembly arrived involved in embodiment 3；
Figure 15 is 402 structural schematic diagram of second base arrived involved in embodiment 3；
Figure 16 is 406 structural schematic diagram of knob part arrived involved in embodiment 3；
Figure 17 is the chuck 404 arrived involved in embodiment 3 and 405 connection diagram of limit assembly.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to specific embodiment pair The specific implementation mode of the present invention is described in detail.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still the present invention can be with Implemented different from other manner described here using other, those skilled in the art can be without prejudice to intension of the present invention In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.
Secondly, " one embodiment " or " embodiment " referred to herein refers to that may be included at least one realization side of the present invention A particular feature, structure, or characteristic in formula." in one embodiment " that different places occur in the present specification not refers both to The same embodiment, nor the individual or selective embodiment mutually exclusive with other embodiment.
TAIC is 1 in following embodiment, 3,5- triallyls-guanamine, the abbreviation of 4,6- triketones；
DOPO is the abbreviation of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide；
DCP is the abbreviation of cumyl peroxide.
Embodiment 1
By percentage to the quality, the content of constituent component and each component is cable raw material：Ethylene-vinyl acetate copolymer 22%, polyethylene 8%, DOPO 38%, TAIC 18%, inorganic combustion inhibitor 13%, initiator 0.7% and antioxygen auxiliary agent 0.3%.The sum of mass percent of each component is 100%.
Wherein, the melt index of ethylene-vinyl acetate copolymer is 3.2g/10min, and the density of polyethylene is 0.906g/cm3, melt index 3.0g/10min；DOPO purity 97%, TAIC purity 96%, inorganic combustion inhibitor are hydroxide Aluminium；Initiator is DCP, purity 96.3%；Antioxygen auxiliary agent was four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] seasons Doutrate, N, bis- [3- (3,5- di-tert-butyl-hydroxy phenyls) propionyl] two [N- [3- of hydrazine and N, N " ' -1,2- second diyl of N'- [4,6- bis- [butyl (1,2,2,6,6- pentamethyl -4- piperidyls) amino] -1,3,5- triazine -2- bases] amino] propyl]-N, N "-dibutyl-N, N "-two (1,2,2,6,6- pentamethyl -4- piperidyls) -1,3,5- triazine -2,4,6- triamines in mass ratio 1: 1:1 is mixed to prepare jointly.
The preparation process of CABLE MATERIALS and the extrusion manufacture craft of cable, specially：
The preparation of CABLE MATERIALS：
Step 1：The TAIC that will be measured by mass percentage, DOPO, initiator 0.4% are put into reaction kettle, setting reaction 165 DEG C, pressure 1atm of kettle temperature degree is kept stirring paddle rotating speed 120rpm, reaction time 13min, will after being then allowed to stand room temperature Product through impurity elimination, be then ground to the powder fire retardant of 10 microns of D50.
Step 2：Various constituent components are weighed by mass percentage, by ethylene-vinyl acetate copolymer, polyethylene, nothing Powder fire retardant obtained is put into machine fire retardant, remaining initiator 0.3%, antioxygen auxiliary agent and step 1 adds with pressurization In the mixing kettle of hot function, and pressurization 5MPa is set, is kneaded to 160 DEG C in mixer, various components is made to be uniformly mixed, formed Mix soft jelly；The soft jelly of obtained mixing is put into single screw rod again and is squeezed out, as shown in Figure 1, by charging The booster action of drive component 202 enables to material to hurtle down along feed hopper 201, into machine barrel 501.Meanwhile driving group Driving motor 101 in part 100 drives the screw rod in machine barrel 501 by the gearing of reduction box 102 and shaft coupling 103 502 are rotated.Material into machine barrel 501 is squeezed out under the rotation forces effect of screw rod 502.
Single screw extrusion machine involved in the present embodiment, agent structure include mainly five component units, are respectively driven System 100, feed system 200, control system 300, support system 400 and compression moulding system 500.
As shown in Figure 2-5, drive system 100 includes driving motor 101, reduction box 102 and shaft coupling 103, and three is successively It is attached, forms transmission mechanism.Feed system 200 includes feed hopper 201 and charging drive component 202.Control system 300 Including the first control panel 301 and the second control panel 302, the first control panel 301 mainly control drive system 100 and Feed system 200, the second control panel 302 mainly control compression moulding system 500.Support system 400 includes first base 401, the Two pedestals 402 and supporting rack 403.Compression moulding system 500 include machine barrel 501, screw rod 502, temperature-controlling component 503, air outlet 504, at Pattern tool 505, discharge port 506, screw rod 502 are set to the inner cavity of machine barrel 501, and temperature-controlling component 503 and air outlet 504 are set to machine The both sides of cylinder 501, molding die 505 and discharge port 506 are set to the end of machine barrel 501.
Further, in drive system 100, the output par, c of driving motor 101 is connected with reduction box 102, slows down Case 102 is connected with shaft coupling 103.The effect of drive system 100 is that required torque and rotating speed are provided to screw rod 502 so that The rotary work in certain range of speeds of screw rod 502 ensures screw rod 502 in certain torque by manufacturing condition requirement It is smoothly rotated under effect, complete raw material plasticizing and is pushed out the transportation work of machine barrel.Wherein, reduction box 102 in prime mover and Plaing a part of to match rotating speed between working machine or executing agency and transmits torque, reduction box 102 is a kind of relatively accurate machinery, Purpose using it is to reduce rotating speed, increases torque.In the present embodiment, reduction box 102 effectively increases the torque of rotation, subtracts The loss of energy is lacked.And shaft coupling 103 is allowed to altogether for two axis (driving shaft and driven shaft) coupled in different institutions With rotation to transmit the machine components of torque.When using the single screw extrusion machine, the screw rod of the compression moulding system 500 502 are matched by shaft coupling 103 and reduction box 102 with driving motor 101, and driving motor 101 drives reduction box 102 and connection Axis device 103 and screw rod 502 are moved, and realize the driving mechanism of total.
In feed system 200, including feed hopper 201 and charging drive component 202, feed hopper 201 and charging driving group Part 202 connects, and feed hopper 201 is located at the surface of machine barrel 501 in compression moulding system 500, and communicates therewith.Feed drive component 202 points are the blender in two parts, respectively external motor and feed hopper 201, when in use, to feed hopper 201 It inside feeds intake, while motor drives blender to be stirred, the material in feed hopper 201 is driven quickly to fall into machine barrel 501, It carries back to handle raw material, effectively raises working efficiency.
There are two control panels, respectively the first control panel 301 and the second control panel 302 for the tool of control system 300.It is single Control system in Screw Extrusion machine equipment is mainly used to realize that screw speed during extruder production work, each position adds The control of the technological parameters such as hot temperature and plasticizing material melt pressure.The control system of extruder mostly uses instrument control at present. In the present embodiment, the first control panel 301 mainly controls drive system 100 and feed system 200, the second control panel 302 Main control compression moulding system 500.Specifically, the first control panel 301 mainly controls the rotating speed of driving motor 101, and charging The rotating speed of motor in drive component 202 can so control the stirring of the rotating speed and blender in feed hopper 201 of screw rod 502 Speed.First control panel 301 is set to the outer side edges of first base 401.Second control panel 302 mainly controls compression moulding system The temperature, environment temperature at each position and charge temperature etc. in 500, it is steady to control technological temperature of the raw material in extrusion plasticizing Determine in a certain range, with the quality of production.Wherein, temperature-controlling component 503 is also controlled by it.Second control panel 302 is set to The outer side edges of second base 402.
There are three supporters, respectively first base 401, second base 402 and supporting rack 403 for the tool of support system 400.Tool Body, wherein first base 401 is used to support drive system 100, and top is equipped with driving motor 101, reduction box 102 and connection Axis device 103.Second base 402 is used to support supporting rack 403 and compression moulding system 500, and second base 402 is provided with support above The lower end of frame 403, supporting rack 403 is connected with the upper surface of second base 402, and the machine barrel 501 of compression moulding system 500 is together with screw rod 502 are set to the upper surface of supporting rack 403.Entire support system 400 plays fixed cell component, and the work of control system is arranged With.
Main part in compression moulding system 500 as entire single screw extruder set, major function be raw material from This back warp is squeezed, is heated, and is plastifying fusion state by Solid State Transformation, then from the flow distribution plate (being also porous plate) of 501 front end of machine barrel Equivalent, isobaric ground uniformly squeeze out, into moulded products mold.Its primary structure includes machine barrel 501, screw rod 502, temperature-controlling component 503, a series of components such as air outlet 504, molding die 505, discharge port 506.Screw rod 502 is set to the inner cavity of machine barrel 501, and Throughout.The upper end of machine barrel 501 is connected with feed hopper 201, and interconnects.Material is put into from feed hopper 201, is gone forward side by side After entering machine barrel 501, material is squeezed, is transferred to end by the screw rod 502 rotated in machine barrel 501.Temperature-controlling component 503 is set to The outer side edges of machine barrel 501 ensure penetralia for being passed through the air-flow of certain temperature to control the environment temperature inside machine barrel 501 Environment temperature is utmostly reduced in extrusion to respectively processing the influence of warm area temperature in Screw Extrusion.Air outlet 504 are set to the other side of machine barrel 501 relative to temperature-controlling component 503, for discharging the air-flow for being passed through machine barrel 501.Molding die 505 and discharge port 506 be set to the outer end of compression moulding system 500, wherein molding die 505 be used for for material it is moulding.Discharging Mouth 506 is set on the downside of the outer end of molding die 505, for exporting molding materials.
In entire production process, screw rod 502 and machine barrel 501 are responsible for the task of plasticizing and the pressurization of material.Screw rod 502 It is the critical component of extruder, extrusion yield, melt temperature, melt uniformity and power consumption of extruder etc. depend primarily on 502 structure of screw rod.The diameter D of screw rod 502 is the basic parameter of screw rod 502, and the specification of extruder often carrys out table with 502 diameter of screw rod Show.502 draw ratio L/D of screw rod is the important parameter of screw rod 502.Draw ratio is big, and plasticizing is uniform, at present the length of general screw 502 Diameter is than being mostly 25 or so.
The specific operation principle of the present embodiment is：Entire extruder device is set on support system 400, control system 300 two control panels control mechanical movement and the temperature levels of extruder respectively.When material is entered by feed hopper 201 After machine barrel 501, rotation is synchronized by the screw rod 502 that drive system 100 is sequentially connected, material is promoted to occur in machine barrel 501 Mobile, material, which is under pressure in suitable environment temperature and obtains heat, occurs metamorphosis, finally by molding die 505 After molding, by 506 discharger of discharge port.
Further, in this course, further include other complementary effects.After material knocks down hopper 201, driving Under the action of dynamic component 202, material can be accelerated and rapidly enter machine barrel 501.Driving motor 101, deceleration in drive system 100 Case 102 and shaft coupling 103 form transmission and rotation are transmitted to screw rod 502.Temperature-controlling component 503 maintains in machine barrel 501, outside screw rod Regional temperature stablize that (there are two region i.e. in machine barrel 501, one is that machine barrel 501 is interior, the perimeter outside screw rod；One is Where screw rod, include the interior zone of each workspace；Interior zone has separation layer with perimeter), temperature-controlling component 503 is tieed up The temperature for having held perimeter is stablized, and non-proxy heater heats each workspace in interior zone, high degree drop It is influenced caused by the low unstable temperature internal each workspace due to extruder environment temperature.
It needs to ensure that the temperature of each workspace of 501 penetralia of machine barrel and environment temperature are in during production and processing Suitable range.And the control of temperature range is mainly implemented by the second control panel 302 to adjust.Pass through the second control panel 302 can adjust each area's temperature of 501 penetralia of machine barrel, be set to 130~145 DEG C of the firstth area, the second area 130~145 DEG C, 130~145 DEG C of third area, 140~155 DEG C of head.Second control panel 302 can also adjust the environment temperature of machine barrel 501. Wherein, the adjusting of environment temperature is mainly realized by temperature-controlling component 503 in machine barrel 501.
Obtain the CABLE MATERIALS that extrusion molding is grain shape；The grain shape CABLE MATERIALS shape is cylindric, length 0.5cm, bottom surface A diameter of 0.2~0.3cm is packed after air-cooled.
Step 3：Second step resulting materials are squeezed in electric wire on line machine production line, in 120~130 DEG C of an area, two It squeezes out, is coated at a temperature of 130~150 DEG C of area, 145~165 DEG C of 3rd area, 145~165 DEG C of 4th area, 140~160 DEG C of head On conductor thread core, cable is made, liquid is then prevented fires into thermal resistance coating application on cable；The liquid fire prevention thermal resistance coating, Its ingredient by percentage to the quality, including acryl resin 29%, aluminium hydroxide 40%, zinc borate 25%, titanium dioxide 5%, Triethyl phosphate 1%.
Dependence test experiment is carried out to product prepared by embodiment 1, the results are shown in table below.
Embodiment 2
Cable raw material, by percentage to the quality, the content of constituent component and each component is：Ethylene-vinyl acetate is copolymerized Object 26.5%, polyethylene 10%, DOPO 39%, TAIC 20%, inorganic combustion inhibitor 2%, initiator 2% and antioxygen auxiliary agent 0.5%.The sum of mass percent of each component is 100%.
Wherein, the melt index of ethylene-vinyl acetate copolymer is 3.2g/10min, and the density of polyethylene is 0.906g/cm3, melt index 3.0g/10min；DOPO purity 97%, TAIC purity 96%, inorganic combustion inhibitor are hydroxide Aluminium；Initiator is DCP, purity 96.3%；Antioxygen auxiliary agent was four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] seasons Doutrate, N, bis- [3- (3,5- di-tert-butyl-hydroxy phenyls) propionyl] two [N- [3- of hydrazine and N, N " ' -1,2- second diyl of N'- [4,6- bis- [butyl (1,2,2,6,6- pentamethyl -4- piperidyls) amino] -1,3,5- triazine -2- bases] amino] propyl]-N, N "-dibutyl-N, N "-two (1,2,2,6,6- pentamethyl -4- piperidyls) -1,3,5- triazine -2,4,6- triamines in mass ratio 1: 1:1 is mixed to prepare jointly.
The extrusion manufacture craft of preparation process and cable including CABLE MATERIALS, specially：
The preparation of CABLE MATERIALS：
Step 1：The TAIC that will be measured by mass percentage, DOPO, initiator 1.5% are put into reaction kettle, setting reaction 168 DEG C, pressure 1atm of kettle temperature degree is kept stirring paddle rotating speed 120rpm, reaction time 15min, will after being then allowed to stand room temperature Product through impurity elimination, be then ground to the powder fire retardant of 10 microns of D50.
Step 2：Various constituent components are weighed by mass percentage, by ethylene-vinyl acetate copolymer, polyethylene, nothing Powder fire retardant obtained is put into machine fire retardant, remaining initiator 0.5%, antioxygen auxiliary agent and step 1 adds with pressurization In the mixing kettle of hot function, and pressurization 5MPa is set, is kneaded to 160 DEG C in mixer, various components is made to be uniformly mixed, formed Mix soft jelly；The soft jelly of obtained mixing is put into single screw rod again and is squeezed out, the first area 130 is set to ~145 DEG C, the second 130~145 DEG C of area, 130~145 DEG C of third area, 140~155 DEG C of head.Second control panel 302 can also Adjust the environment temperature of machine barrel 501.Wherein, the adjusting of environment temperature is mainly realized by temperature-controlling component 503 in machine barrel 501.
Obtain the CABLE MATERIALS that extrusion molding is grain shape；The grain shape CABLE MATERIALS shape is cylindric, length 0.5cm, bottom surface A diameter of 0.2~0.3cm is packed after air-cooled.
The present embodiment is different from embodiment 1, according to the change procedure of the three kinds of physical states of material in an extruder And the job requirement to 502 each position of screw rod, screw rod 502 can be divided into feeding section, also known as solid conveying section；Melt zone, Also known as compression section；Homogenizing zone, also known as metering section.Here it is the common screws 502 usually described in us, also known as three-stage screw 502.Solve the problems, such as needed for the present embodiment be：Single screw extrusion machine in process of manufacture, feeding section, melt zone and Change the working condition in these three regions of section.
In the production application field of single screw extrusion machine, common extrusion theory is built upon conveying, compression and measures this On the basis of three basic functions.Thus in general, screw rod 502 is including feeding section, melt zone and homogenizes section.Feeding section rises Solid Conveying and Melting acts on, and material, in the solid-state not being plasticized, the particle of compacting is gradually become by loose particle, and pass through in feeding section Friction generates heat；Material melts are played in compression section, and material is gradually changed from solid-state to viscous state in compression section, this section In stirring, shearing, rubbing action it is all more complicated；The main function for homogenizing section is that the fused materials for sending compression section increase Pressure, it is further homogenous plasticized, and make its level pressure, quantitatively from head extrusion.
Specifically, in screw rod 502, feeding section (transportation section) be presented entering material since material molten condition it Between one section, be made of charging zone, solid conveying zone and transition stagnant regions.It is solid-state that material, which is in this section, arrives feeding section End, material is heated to soften.Feeding section screw channel is equidistantly equal deep and deep.The effect of feeding section be make material it is heated, by It presses and moves forward, i.e., entering the feedstock transportation of machine barrel from hopper to fluxing zone.So feeding section is also known as feeding section or feed section.
After material enters screw rod 502 by hopper, in the case where the screw rod 502 of rotation acts on, pass through machine tube inner wall and screw rod 502 The rubbing action on surface is fed forward and is compacted, and material is fed forward in feeding section in solid-state.Under normal conditions, it is feeding The end of section, due to the effect of heating and frictional heat outside machine barrel, the material being in contact with machine tube inner wall has reached or close to glutinous Fluidised form simultaneously starts to melt, and a transition region occurs, i.e. stagnant regions.Strictly speaking, so-called stagnant regions refer to from solid conveying zone Terminate this area city initially occurred to molten bath.
Melt zone (compression section) refers to one section of 502 middle part of screw rod, also known as fluxing zone.This section is molten to since material Material melts completely.Screw channel in compression section is equidistant not equal deep and from deep to shallow.The effect of compression section is that material melts is made to mould Change, is compacted and moves forward, while also playing the role of exhaust.
Material enters melt zone by feeding section, continues to be fed forward with material, due to the gradual change of 502 screw channel of screw rod The inhibition of shallow and filter screen, flow distribution plate and head, material are gradually under pressure effect, and are further consolidated.With This simultaneously, material by from machine barrel external heating and screw rod 502 and machine barrel it is strong stir, mix and shear the effects that, Material constantly heats up, and the inventory that fusant doses is on the increase and is not melted is constantly reduced, and arrives melt zone end, and material is whole Or the overwhelming majority melts and is changed into viscous state.
Homogenizing zone (metering section) is the final stage of screw rod 502, is called metering section or extruding zone.Its effect is to make melt Further plasticizing uniformly, makes stream constant temperature, quantitative, level pressure uniformly be squeezed out by flow channel, this section of screw channel is equidistantly equal deep, and compared with It is shallow.
It is additionally provided with heating system 507 and cooling system 508 in the outside of machine barrel 501.It is primarily referred to as to compression moulding system The heating and cooling of the components such as machine barrel 501, screw rod 502 in 500.The purpose of heating and cooling to these positions, be in order to It controls technological temperature of the raw material in extrusion plasticizing in a certain range, ensures the plasticizing quality of raw material, make material product The progress of production energy normal table, obtains qualified product.
Specifically, as shown in fig. 6, also there is heater 507a, insulating layer 507b and safety in the outside of machine barrel 501 The structure sheafs such as protective cover 507c.Further, screw rod 502 is set to the inside of machine barrel 501.The external setting of the inside of machine barrel 501 It corresponds respectively to feeding section, melt zone in screw rod 502 there are three heater 507a and homogenizes three sectional areas of section (certainly in reality During the use of border, 3 heaters 507 can be not limited to according to actual demand, it can be according to the hop count of multi-section type screw 502 Appropriate adjustment quantity).Each heater 507a is ring-type, and outer around machine barrel 501 makes a circle, and fit closely.Heater 507a is mainly made of temperature controller and heating collar, can be heated to the screw rod 502 of machine barrel 501 and inside, each section Different temperature ranges can be adjusted.One layer of heat preservation layer 507b is wrapped up in the outside of heater 507a, can efficiently reduce heat Loss, save production cost.And the outside of insulating layer 507b also covers one layer of safty shield 507c, has to total Outer protection acts on.
Meanwhile corresponding to the regional location of feeding section in the structure sheaf where safty shield 507c and insulating layer 507b Can leave a blank setting cooling system 508, and effect is cooled down to 501 part of machine barrel at feed hopper 201, and raw material mistake is prevented It is early to melt, there is " bridge formation " phenomenon, blocks feed hopper 201.Cooling system 508 is a cooling jacket being sleeved on machine barrel 501, With water inlet 508a and water outlet 508b.508 boring of cooling system can house water and can circulate.When cold water from into Mouth of a river 508a is flowed into, and is full of 508 inner space of cooling system, then after water outlet 508b outflows, can absorb and take away machine barrel Heat in 501.In this way, the circulating water flow of cooling system 508 is continuous successively, and it is sustainable to cool for the region, prevent original Expect premature melting.Preferably, the cooling system 508 in the present embodiment can also use structure as shown in Figure 9, cooling system 508 are also distributed in the structure sheaf where insulating layer 507b, and overall structure is spiral circulation passage, and the section in channel is The certain rectangle of size (actual size can carry out rationally changing according to objective demand).Channel has water inlet 508a and water outlet 508b is respectively positioned on the underface of compression moulding system 500.
Step 3：Second step resulting materials are squeezed in electric wire on line machine production line, in 120~130 DEG C of an area, two It squeezes out, is coated at a temperature of 130~150 DEG C of area, 145~165 DEG C of 3rd area, 145~165 DEG C of 4th area, 140~160 DEG C of head On conductor thread core, cable is made, liquid is then prevented fires into thermal resistance coating application on cable；The liquid fire prevention thermal resistance coating, Its ingredient by percentage to the quality, including acryl resin 35%, aluminium hydroxide 35%, zinc borate 22%, titanium dioxide 5%, Triethyl phosphate 3%.
Dependence test experiment is carried out to product prepared by embodiment 2, the results are shown in table below.
Embodiment 3：
Cable raw material, by percentage to the quality, the content of constituent component and each component is：Ethylene-vinyl acetate is copolymerized Object 27%, polyethylene 13%, DOPO 35%, TAIC 16%, inorganic combustion inhibitor 7%, initiator 1.5% and antioxygen auxiliary agent 0.5%.The sum of mass percent of each component is 100%.
Wherein, the melt index of ethylene-vinyl acetate copolymer is 3.2g/10min, and the density of polyethylene is 0.906g/cm3, melt index 3.0g/10min；DOPO purity 97%, TAIC purity 97%, inorganic combustion inhibitor are hydroxide Aluminium；Initiator is DCP, purity 96.3%；Antioxygen auxiliary agent was four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] seasons Doutrate, N, bis- [3- (3,5- di-tert-butyl-hydroxy phenyls) propionyl] two [N- [3- of hydrazine and N, N " ' -1,2- second diyl of N'- [4,6- bis- [butyl (1,2,2,6,6- pentamethyl -4- piperidyls) amino] -1,3,5- triazine -2- bases] amino] propyl]-N, N "-dibutyl-N, N "-two (1,2,2,6,6- pentamethyl -4- piperidyls) -1,3,5- triazine -2,4,6- triamines in mass ratio 1: 1:1 is mixed to prepare jointly.
The preparation process of CABLE MATERIALS and the extrusion manufacture craft of cable, specially：
The preparation of CABLE MATERIALS：
Step 1：The TAIC that will be measured by mass percentage, DOPO, initiator 1.1% are put into reaction kettle, setting reaction 165 DEG C, pressure 1atm of kettle temperature degree is kept stirring paddle rotating speed 120rpm, reaction time 11min, will after being then allowed to stand room temperature Product through impurity elimination, be then ground to the powder fire retardant of 10 microns of D50.
Step 2：Various constituent components are weighed by mass percentage, by ethylene-vinyl acetate copolymer, polyethylene, nothing Powder fire retardant obtained is put into machine fire retardant, remaining initiator 0.4%, antioxygen auxiliary agent and step 1 adds with pressurization In the mixing kettle of hot function, and pressurization 5MPa is set, is kneaded to 160 DEG C in mixer, various components is made to be uniformly mixed, formed Mix soft jelly；The soft jelly of obtained mixing is put into single screw rod again and is squeezed out,
Single screw extrusion machine involved in the present embodiment, agent structure include mainly five component units, are respectively driven System 100, feed system 200, control system 300, support system 400 and compression moulding system 500.
As shown in Figure 2-5, drive system 100 includes driving motor 101, reduction box 102 and shaft coupling 103, and three is successively It is attached, forms transmission mechanism.Feed system 200 includes feed hopper 201 and charging drive component 202.Control system 300 Including the first control panel 301 and the second control panel 302, the first control panel 301 mainly control drive system 100 and Feed system 200, the second control panel 302 mainly control compression moulding system 500.Support system 400 includes first base 401, the Two pedestals 402 and supporting rack 403.Compression moulding system 500 include machine barrel 501, screw rod 502, temperature-controlling component 503, air outlet 504, at Pattern tool 505, discharge port 506, screw rod 502 are set to the inner cavity of machine barrel 501, and temperature-controlling component 503 and air outlet 504 are set to machine The both sides of cylinder 501, molding die 505 and discharge port 506 are set to the end of machine barrel 501.
Further, in drive system 100, the output par, c of driving motor 101 is connected with reduction box 102, slows down Case 102 is connected with shaft coupling 103.The effect of drive system 100 is that required torque and rotating speed are provided to screw rod 502 so that The rotary work in certain range of speeds of screw rod 502 ensures screw rod 502 in certain torque by manufacturing condition requirement It is smoothly rotated under effect, complete raw material plasticizing and is pushed out the transportation work of machine barrel.Wherein, reduction box 102 in prime mover and Plaing a part of to match rotating speed between working machine or executing agency and transmits torque, reduction box 102 is a kind of relatively accurate machinery, Purpose using it is to reduce rotating speed, increases torque.In the present embodiment, reduction box 102 effectively increases the torque of rotation, subtracts The loss of energy is lacked.And shaft coupling 103 is allowed to altogether for two axis (driving shaft and driven shaft) coupled in different institutions With rotation to transmit the machine components of torque.When using the single screw extrusion machine, the screw rod of the compression moulding system 500 502 are matched by shaft coupling 103 and reduction box 102 with driving motor 101, and driving motor 101 drives reduction box 102 and connection Axis device 103 and screw rod 502 are moved, and realize the driving mechanism of total.
In feed system 200, including feed hopper 201 and charging drive component 202, feed hopper 201 and charging driving group Part 202 connects, and feed hopper 201 is located at the surface of machine barrel 501 in compression moulding system 500, and communicates therewith.Feed drive component 202 points are the blender in two parts, respectively external motor and feed hopper 201, when in use, to feed hopper 201 It inside feeds intake, while motor drives blender to be stirred, the material in feed hopper 201 is driven quickly to fall into machine barrel 501, It carries back to handle raw material, effectively raises working efficiency.
There are two control panels, respectively the first control panel 301 and the second control panel 302 for the tool of control system 300.It is single Control system in Screw Extrusion machine equipment is mainly used to realize that screw speed during extruder production work, each position adds The control of the technological parameters such as hot temperature and plasticizing material melt pressure.The control system of extruder mostly uses instrument control at present. In the present embodiment, the first control panel 301 mainly controls drive system 100 and feed system 200, the second control panel 302 Main control compression moulding system 500.Specifically, the first control panel 301 mainly controls the rotating speed of driving motor 101, and charging The rotating speed of motor in drive component 202 can so control the stirring of the rotating speed and blender in feed hopper 201 of screw rod 502 Speed.First control panel 301 is set to the outer side edges of first base 401.Second control panel 302 mainly controls compression moulding system The temperature, environment temperature at each position and charge temperature etc. in 500, it is steady to control technological temperature of the raw material in extrusion plasticizing Determine in a certain range, with the quality of production.Wherein, temperature-controlling component 503 is also controlled by it.Second control panel 302 is set to The outer side edges of second base 402.
There are three supporters, respectively first base 401, second base 402 and supporting rack 403 for the tool of support system 400.Tool Body, wherein first base 401 is used to support drive system 100, and top is equipped with driving motor 101, reduction box 102 and connection Axis device 103.Second base 402 is used to support supporting rack 403 and compression moulding system 500, and second base 402 is provided with support above The lower end of frame 403, supporting rack 403 is connected with the upper surface of second base 402, and the machine barrel 501 of compression moulding system 500 is together with screw rod 502 are set to the upper surface of supporting rack 403.Entire support system 400 plays fixed cell component, and the work of control system is arranged With.
Main part in compression moulding system 500 as entire single screw extruder set, major function be raw material from This back warp is squeezed, is heated, and is plastifying fusion state by Solid State Transformation, then from the flow distribution plate (being also porous plate) of 501 front end of machine barrel Equivalent, isobaric ground uniformly squeeze out, into moulded products mold.Its primary structure includes machine barrel 501, screw rod 502, temperature-controlling component 503, a series of components such as air outlet 504, molding die 505, discharge port 506.Screw rod 502 is set to the inner cavity of machine barrel 501, and Throughout.The upper end of machine barrel 501 is connected with feed hopper 201, and interconnects.Material is put into from feed hopper 201, is gone forward side by side After entering machine barrel 501, material is squeezed, is transferred to end by the screw rod 502 rotated in machine barrel 501.Temperature-controlling component 503 is set to The outer side edges of machine barrel 501 ensure penetralia for being passed through the air-flow of certain temperature to control the environment temperature inside machine barrel 501 Environment temperature is utmostly reduced in extrusion to respectively processing the influence of warm area temperature in Screw Extrusion.Air outlet 504 are set to the other side of machine barrel 501 relative to temperature-controlling component 503, for discharging the air-flow for being passed through machine barrel 501.Molding die 505 and discharge port 506 be set to the outer end of compression moulding system 500, wherein molding die 505 be used for for material it is moulding.Discharging Mouth 506 is set on the downside of the outer end of molding die 505, for exporting molding materials.
In entire production process, screw rod 502 and machine barrel 501 are responsible for the task of plasticizing and the pressurization of material.Screw rod 502 It is the critical component of extruder, extrusion yield, melt temperature, melt uniformity and power consumption of extruder etc. depend primarily on 502 structure of screw rod.The diameter D of screw rod 502 is the basic parameter of screw rod 502, and the specification of extruder often carrys out table with 502 diameter of screw rod Show.502 draw ratio L/D of screw rod is the important parameter of screw rod 502.Draw ratio is big, and plasticizing is uniform, at present the length of general screw 502 Diameter is than being mostly 25 or so.
The specific operation principle of the present embodiment is：Entire extruder device is set on support system 400, control system 300 two control panels control mechanical movement and the temperature levels of extruder respectively.When material is entered by feed hopper 201 After machine barrel 501, rotation is synchronized by the screw rod 502 that drive system 100 is sequentially connected, material is promoted to occur in machine barrel 501 Mobile, material, which is under pressure in suitable environment temperature and obtains heat, occurs metamorphosis, finally by molding die 505 After molding, by 506 discharger of discharge port.
Further, in this course, further include other complementary effects.After material knocks down hopper 201, driving Under the action of dynamic component 202, material can be accelerated and rapidly enter machine barrel 501.Driving motor 101, deceleration in drive system 100 Case 102 and shaft coupling 103 form transmission and rotation are transmitted to screw rod 502.Temperature-controlling component 503 maintains in machine barrel 501, outside screw rod Regional temperature stablize that (there are two region i.e. in machine barrel 501, one is that machine barrel 501 is interior, the perimeter outside screw rod；One is Where screw rod, include the interior zone of each workspace；Interior zone has separation layer with perimeter), temperature-controlling component 503 is tieed up The temperature for having held perimeter is stablized, and non-proxy heater heats each workspace in interior zone, high degree drop It is influenced caused by the low unstable temperature internal each workspace due to extruder environment temperature.
It needs to ensure that the temperature of each workspace of 501 penetralia of machine barrel and environment temperature are in during production and processing Suitable range.And the control of temperature range is mainly implemented by the second control panel 302 to adjust.Pass through the second control panel 302 can adjust each area's temperature of 501 penetralia of machine barrel, be set to 130~145 DEG C of the firstth area, the second area 130~145 DEG C, 130~145 DEG C of third area, 140~155 DEG C of head.Second control panel 302 can also adjust the environment temperature of machine barrel 501. Wherein, the adjusting of environment temperature is mainly realized by temperature-controlling component 503 in machine barrel 501.
Obtain the CABLE MATERIALS that extrusion molding is grain shape；The grain shape CABLE MATERIALS shape is cylindric, length 0.5cm, bottom surface A diameter of 0.2~0.3cm is packed after air-cooled.
The present embodiment is different from above-described embodiment,
Temperature-controlling component 503 includes magnetic flexible 503a, air intake 503b, air inlet 503c.
This equipment controls internal environment temperature using gas flow temperature, i.e., the gas of required temperature is passed through to internal environment Stream continues temperature control to realize.
The specific workflow of the present embodiment is：Air-flow with specific temperature enters device from air intake 503b, then leads to It crosses air inlet 503c to enter in machine barrel 501, be finally discharged from air outlet 504.
How to realize that temperature-controlling component 503 controls the size of gas flow.Therefore, the present embodiment and above-described embodiment The difference is that：It is provided with air quantity controller 509 at air inlet 503c, may be implemented to being passed through in machine barrel 501 Gas flow is defined.
As shown in figs. 8-10, in the present embodiment, air quantity controller 509 includes the first counterpart 509a, the second cooperation Part 509b, rebound component 509c and fixing piece 509d.The interspersed connections of first counterpart 509a and the second counterpart 509b, first Counterpart 509a is arranged at by springing back component 509c on fixing piece 509d, and the second counterpart 509b and fixing piece 509d are mutual Connection.
Specifically, the first counterpart 509a plays the role of that the second counterpart 509b is pushed to carry out eccentric rotary.First matches Component 509a includes circle magnetic patch 509a-1 and interlocking bar 509a-2, and it is circle that round magnetic patch 509a-1, which has magnetism, planform, Shape, there are one circular holes for centre position tool.Interlocking bar 509a-2 has four, and wherein one end of interlocking bar 509a-2 is fixed on circle On shape magnetic patch 509a-1, other end is inclined outwardly in a corresponding plane, and the plane is by interlocking bar 509a-2 in circle On the straight line that contact point on shape magnetic patch 509a-1 is linked to be with the center of circle, and the plane is flat where round magnetic patch 509a-1 Face.Four interlocking bar 509a-2 are evenly distributed on the surface of round magnetic patch 509a-1, preferably, four interlocking bar 509a-2 Angle of inclination is identical, is centrosymmetric mutually, and four contact points are also distributed on the certain circumference of diameter simultaneously.
Second counterpart 509b, which has, covers air inlet 503c, determines the effect of gas flow size.Second counterpart 509b is circular contour, is corresponded to there are four interlocking bar 509a-2 similarly tools, and four shape and structures are identical.It passes through shaft 509b-1 is connect with fixing piece 509d bias, and can be eccentrically rotated around shaft 509b-1.Second counterpart 509b exists Correspondence stretches into the outer end with hole 509b-2, four interlocking bar 509a-2 respectively on the other side of diameter where shaft 509b-1 Into four hole 509b-2 of the second counterpart 509b, linkage is formed.
Rebound component 509c has the function of the first counterpart 509a and the second counterpart 509b carrying out rebound playback.It returns It includes telescopic shaft 509c-1, pedestal 509c-2, compressed spring 509c-3 and spring leaf 509c-4 to play component 509c.Telescopic shaft One end of 509c-1 is connected with pedestal 509c-2, and fixed, and the other end is provided with a port, and port is circle, and diameter is big In the outer diameter of telescopic shaft 509c-1.Compressed spring 509c-3 is sheathed on telescopic shaft 509c-1, both ends by pedestal 509c-2 and The port of telescopic shaft 509c-1 is limited.Spring leaf 509c-4 corresponds to there are four four the second counterpart 509b tools, and shape It is identical, it is " V " shape spring leaf.One side of spring leaf 509c-4 is longer, and shorter on one side, shorter one end is fixed on pedestal The edge of 509c-2, longer one end deviates from pedestal 509c-2, towards outside, and is against the outer of corresponding second counterpart 509b Edge.In structure, the spring leaf 509c-4 after fixing is in inverted " v ".It should be pointed out that in the circle of the first counterpart 509a On shape magnetic patch 509a-1, Circularhole diameter is slightly larger than the outer diameter of telescopic shaft 509c-1.Meanwhile round magnetic patch 509a-1 passes through it On circular hole be sheathed on telescopic shaft 509c-1, resist the port of telescopic shaft 509c-1 on one side, another side resists compressed spring 509c-3。
Fixing piece 509d has the function of that fixed entire air quantity controller 509, outer profile are circle, mutually at two Vertical diametrically has connecting rod, and two connecting rods are vertically compared to the center of circle, and circle centre position has certain space to put Set and fix the pedestal 509c-2 of rebound component 509c.Space between connecting rod is used for the circulation of gas.
In the present embodiment, air quantity controller 509 can control the first counterpart 509a by the effect of external magnetic field Movement, to pass through the size of the mechanisms influence air flow rate of linkage.Detailed process includes the following steps：
One, external magnetic field (magnetic flexible 503a) enhances, be sheathed on round magnetic patch 509a-1 on telescopic shaft 509c-1 by The repulsion force effect of magnetic flexible 503a is moved inward along telescopic shaft 509c-1.
Two, the magnetic flexible 503a moved drives the interlocking bar 509a-2 being fixed thereon to be moved simultaneously, due to linkage The other end of bar 509a-2 is interspersed in the hole 509b-2 of the second counterpart 509b, therefore the second counterpart 509b is driven to rotate Axis 509b-1 carries out eccentric rotary, and the direction of rotation is the inside of device.
Three, the second counterpart 509b of eccentric rotary gradually blocks the area of a part of air inlet 503c inwardly, from And affect the size of gas flow.
Four, continue to increase magnetic field, until repulsive force caused by external magnetic field is equal to the bounce of spring leaf 509c-4 or waits In the sum of the holding power of the bounce and pedestal 509c-2 offers of spring leaf 509c-4, the flow of gas is minimum at this time.
Five, reduce magnetic field, repulsive force reduces relatively caused by magnetic field, and the first counterpart 509a is by compressed spring 509c-3 Bounce move out, while the second counterpart 509b is by the outside eccentric rotary of effect of spring leaf 509c-4 bounces, Whole device gradually playbacks.
Six, during device playback, the area that the second counterpart 509b covers air inlet 503c is reduced, gas stream quantitative change Greatly.
1~17 in the present embodiment referring to Fig.1, and supporting rack 403 passes through chuck 404 and limit with second base 402 Component 405 is attached, and the two can buckle mutually, while can also dismantle separation.Wherein, chuck 404 is set to supporting rack 403 Downside, and in close to inside one end.Limit assembly 405 is set to the upside of second base 402, also corresponds to chuck 404 in one end close to inside.Specifically, chuck 404 has overhanging short tube 404a, snapping outer rim 404b and buckle 404c.Overhanging short tube 404a is open circles tubulose, is extended downwardly by the medial end of 403 lower surface of supporting rack, the side of outer end Edge is provided with the snapping outer rim 404b of evagination, and for snapping outer rim 404b in annular shape, surrounding is uniform-distribution with four buckle 404c.Card It is in hook-shaped to detain 404c, and is seen from bottom to top, and crotch direction is clockwise.Limit assembly 405 includes external ring 405a, locking Block 405b and wheel rack 405c.Wherein, external ring 405a's is generally circular, is cut with limiting slot 405d, limiting slot thereon 405d is cut out on the basis of plane where external ring 405a, and the shape of limiting slot 405d corresponds to snapping in chuck 404 The combined shaped of outer rim 404b and buckle 404c, thickness of the thickness slightly larger than buckle 404c of external ring 405a.Clamping block 405b It is set on limiting slot 405d, and is covered on the corresponding position of corresponding buckle 404c shapes.It is provided on external ring 405a The longitudinal side of a bit of wheel rack 405c, wheel rack 405c are bonded external ring 405a, are vertically arranged, and outside has the gear teeth, Inside is smooth.Correspond on the outside of external ring 405a in the one end wheel rack 405c and is provided with arc notch 405e.
In the present embodiment, limit assembly 405 is wholy set in the upside of second base 402, meanwhile, second base 402 Upside correspond to the external ring 405a outer contour shapes setting of limit assembly 405 there are four fixing piece 402a, fixing piece 402a In hook-shaped, 405 total of limit assembly can be fixed.Meanwhile fixed frame there are one being also set up on the upside of second base 402 402b, fixed frame 402b are inverted "L" shape, and the end of side wall is fixed in second base 402, and upper surface center offers One circular hole, to place and fixed knob part 406, the circular hole vertically corresponding positioning there are one tools on 402 surface of second base Hole 402c can make the lower end of knob part 406 embedded and fixed.
In the present embodiment, chuck 404 and the connection and fixation of limit assembly 405 need the cooperation of knob part 406 to complete. Knob part 406 plays locking and firm effect wherein.Knob part 406 includes top plate 406a, toothed disc 406b, fixed disk 406c, connecting shaft 406d and locating shaft 406e.Top plate 406a is in the top of knob part 406, center location and connecting shaft The end face of 406d is attached, the other side connection of the other end tooth connection wheel disc 406b of connecting shaft 406d, toothed disc 406b The other side connection locating shaft 406e of fixed disk 406c, fixed disk 406c.Further, the arc at 405 edge of above-mentioned limit assembly V notch v 405e sizes correspond to fixed disk 406c, and are used for fixed knob part 406.The wheel rack 405c of limit assembly 405 Modulus is identical as the modulus of toothed disc 406b, can combine linkage.
Limit assembly 405 before being attached, is first mounted in second base 402 by supporting rack 403 with second base In fixing piece 402a, limit assembly 405 can rotation in it.It again will be on the buckle 404c alignment limit assemblies 405 of chuck 404 Limiting slot 405d, and be placed into slot.Then knob part 406 is mounted on fixed frame 402b, specifically, by knob part 406 connecting shaft 406d is interspersed to be fixed in the circular hole of fixed frame 402b, and locating shaft 406e is directed at location hole 402c downward.This When knob part 406 just alignment wheel rack 405c initiating terminal, rotate in an anti-clockwise direction knob part 406, while driving wheel rack 405c and entire limit assembly 405 are rotated counterclockwise, until buckle 404c is completely embedded into limiting slot 405d.At this point, lock Determine block 405b to be located above buckle 404c, fix buckle 404c so that entire chuck 404 can not fall off, and arc notch 405e is placed exactly in the lateral location of knob part 406.To ensure that accidentalia causes the rotation of limit assembly 405 to slip, buckling When 404c is completely embedded into limiting slot 405d, push-turn key part 406 so that fixation disk 406c thereon is stuck in arc notch 405e It is interior so that limit assembly 405 can not loosen.So far, supporting rack 403 connect with second base 402 and finishes.
Step 3：Second step resulting materials are squeezed in electric wire on line machine production line, in 120~130 DEG C of an area, two It squeezes out, is coated at a temperature of 130~150 DEG C of area, 145~165 DEG C of 3rd area, 145~165 DEG C of 4th area, 140~160 DEG C of head On conductor thread core, cable is made, liquid is then prevented fires into thermal resistance coating application on cable；The liquid fire prevention thermal resistance coating, Its ingredient by percentage to the quality, including acryl resin 35%, aluminium hydroxide 34%, zinc borate 24%, titanium dioxide 4%, Triethyl phosphate 3%.
Dependence test experiment is carried out to product prepared by embodiment 3, comparing result is as shown in the table.
It should be noted that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to preferable Embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the technology of the present invention Scheme is modified or replaced equivalently, and without departing from the spirit of the technical scheme of the invention and range, should all be covered in this hair In bright right.

Claims (4)

1. it is a kind of with liquid fire prevention thermal resistance coating be dominate prepare fire protection flame retarding cable method, it is characterised in that：Including,
Composition of raw materials gross mass is 100%, by percentage to the quality, including ethylene-vinyl acetate copolymer 20 ~ 30%, poly- second Alkene 8 ~ 14%, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide 30 ~ 40%, 1,3,5- triallyls-guanamine, 4, 6- triketones 10 ~ 20%, aluminium hydroxide 2 ~ 15%, initiator 0.5 ~ 3% and antioxygen auxiliary agent 0.3 ~ 0.5%；
By 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 1,3,5- triallyls-guanamine, 4,6- triketones with And it stands in 40 ~ 60% input reaction kettles of initiator quality in the composition of raw materials and arrives room temperature, it is fire-retardant that impurity elimination is ground into powder Agent；
By obtained powder fire retardant and polyethylene, ethylene-vinyl acetate copolymer, aluminium hydroxide, anti-oxidant auxiliary agent, remainder Initiator is kneaded in mixer to 155 ~ 165 DEG C, forms jelly；
Jelly is put into single screw extrusion machine and is squeezed out, it is air-cooled, it squeezes line machine into electric wire and squeezes out, be coated on conductor thread core On, cable is made, then on the cables by liquid fire prevention thermal resistance coating application；
The liquid is prevented fires thermal resistance coating, ingredient by percentage to the quality, including, acryl resin 25 ~ 35%, aluminium hydroxide 20 ~ 40%, zinc borate 10 ~ 25%, titanium dioxide 2 ~ 5%, triethyl phosphate 1 ~ 3%；Wherein,
The initiator includes cumyl peroxide；
The input reaction kettle, wherein the temperature of reaction kettle be 170 DEG C ~ 185 DEG C, pressure 1atm, rotating speed of agitator be 100 ~ 150rpm, reaction time are 10 ~ 15min；
The antioxygen auxiliary agent is four [β-（3,5- di-tert-butyl-hydroxy phenyls）Propionic acid] season-Doutrate, N, the bis- [3- of N'- (3,5- di-tert-butyl-hydroxy phenyls) propionyl] hydrazine and N, N'''-1,2- second diyl two [N- [3- [4,6- bis- [butyl (1,2, 2,6,6- pentamethyl -4- piperidyls) amino] -1,3,5- triazine -2- bases] amino] propyl]-N, N''- dibutyl-N, N''- bis- (1,2,2,6,6- pentamethyl -4- piperidyls) -1,3,5- triazine -2,4,6- triamines in mass ratio 1:1:1 is mixed to prepare jointly；
The density of the polyethylene is 0.90 ~ 0.92 g/cm3, melt index is 1.0 ~ 8.0g/10min；
The melt index of the ethylene-vinyl acetate copolymer is 2.0 ~ 8.0g/10min；
The single screw extrusion machine, agent structure include mainly five component units, respectively drive system（100）, charging System（200）, control system（300）, support system（400）With compression moulding system（500）, compression moulding system（500）Including machine barrel （501）, screw rod（502）, temperature-controlling component（503）, air outlet（504）, molding die（505）, discharge port（506）, screw rod（502） It is set to machine barrel（501）Inner cavity, temperature-controlling component（503）And air outlet（504）It is set to machine barrel（501）Both sides, shaping mould Tool（505）And discharge port（506）It is set to machine barrel（501）End, air inlet（503c）Place is provided with air quantity controller （509）, may be implemented to being passed through machine barrel（501）Interior gas flow is defined, air quantity controller（509）Including first Counterpart（509a）, the second counterpart（509b）, rebound component（509c）And fixing piece（509d）, the first counterpart（509a） With the second counterpart（509b）Interspersed connection, the first counterpart（509a）By springing back component（509c）It is arranged at fixing piece （509d）On, the second counterpart（509b）With fixing piece（509d）It interconnects, the first counterpart（509a）Play promotion second Counterpart（509b）Carry out the effect of eccentric rotary, the first counterpart（509a）Including round magnetic patch（509a-1）And interlocking bar （509a-2）, round magnetic patch（509a-1）With magnetism, planform is circle, and there are one circular hole, interlocking bar for centre position tool （509a-2）With four, interlocking bar（509a-2）Wherein one end be fixed on round magnetic patch（509a-1）On, other end exists It is inclined outwardly in a corresponding plane, which passes through interlocking bar（509a-2）In round magnetic patch（509a-1）On contact point On the straight line being linked to be with the center of circle, and the plane is perpendicular to round magnetic patch（509a-1）Place plane, four interlocking bar（509a- 2）It is evenly distributed on round magnetic patch（509a-1）Surface on, four interlocking bar（509a-2）Angle of inclination it is identical, be in mutually Central symmetry, and four contact points are also distributed on the certain circumference of diameter simultaneously, the second counterpart（509b）With cover into Air port（503c）, determine the effect of gas flow size, the second counterpart（509b）For circular contour, correspond to interlocking bar （509a-2）There are four also the same tools, and four shape and structures are identical, pass through shaft（509b-1）With fixing piece（509d）Partially The heart connects, and can be around shaft（509b-1）It is eccentrically rotated, the second counterpart（509b）In shaft（509b-1）Place There is hole on the other side of diameter（509b-2）, four interlocking bar（509a-2）Outer end respectively correspondence extend into the second cooperation Part（509b）Four holes（509b-2）It is interior, linkage is formed, component is sprung back（509c）With by the first counterpart（509a）With Second counterpart（509b）The effect of rebound playback is carried out, component is sprung back（509c）Including telescopic shaft（509c-1）, pedestal （509c-2）, compressed spring（509c-3）And spring leaf（509c-4）, telescopic shaft（509c-1）One end and pedestal（509c- 2）It is connected, and fixed, the other end is provided with a port, and port is circle, and diameter is more than telescopic shaft（509c-1）Outer diameter, Compressed spring（509c-3）It is sheathed on telescopic shaft（509c-1）On, both ends are by pedestal（509c-2）And telescopic shaft（509c-1）'s Port is limited, spring leaf（509c-4）Corresponding to four the second counterparts（509b）There are four tools, and shape is identical, is V Shape spring leaf, spring leaf（509c-4）One side it is longer, on one side it is shorter, shorter one end is fixed on pedestal（509c-2）Side Edge, longer one end deviate from pedestal（509c-2）, towards outside, and it is against corresponding second counterpart（509b）Outer edge, In structure, the spring leaf after fixing（509c-4）In inverted V-shaped, in the first counterpart（509a）Round magnetic patch（509a-1） On, Circularhole diameter is slightly larger than telescopic shaft（509c-1）Outer diameter, meanwhile, round magnetic patch（509a-1）Pass through circular hole thereon It is sheathed on telescopic shaft（509c-1）On, telescopic shaft is resisted on one side（509c-1）Port, another side resists compressed spring（509c- 3）, fixing piece（509d）With the entire air quantity controller of fixation（509）Effect, outer profile be circle, two mutually Vertical diametrically has connecting rod, and two connecting rods are vertically compared to the center of circle, and circle centre position has certain space to put Set and fix rebound component（509c）Pedestal（509c-2）, the space between connecting rod is used for the circulation of gas.
2. being according to claim 1 the leading method for preparing fire protection flame retarding cable, feature with liquid fire prevention thermal resistance coating It is：The impurity elimination is ground into powder fire retardant, wherein described its grain size specification of powder fire retardant is D50 8~12μm。
3. being according to claim 1 the leading method for preparing fire protection flame retarding cable, feature with liquid fire prevention thermal resistance coating It is：It is described to squeeze line machine into electric wire and squeeze out, wherein the electric wire squeeze line machine temperature parameter be 120 ~ 130 DEG C of an area, Two 130 ~ 150 DEG C of areas, 145 ~ 165 DEG C of 3rd area, 145 ~ 165 DEG C of 4th area, 140 ~ 160 DEG C of head.
4. being according to claim 1 the leading method for preparing fire protection flame retarding cable, feature with liquid fire prevention thermal resistance coating It is：Described put into jelly in single screw extrusion machine squeezes out, wherein the single screw extrusion machine temperature parameter is One 130 ~ 145 DEG C of area, the second 130 ~ 145 DEG C of area, 130 ~ 145 DEG C of third area, 140 ~ 155 DEG C of head.
CN201710970361.2A 2017-10-16 2017-10-16 A method of fire protection flame retarding cable is prepared to be leading with liquid fire prevention thermal resistance coating Active CN107698858B (en)

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CN1708562A (en) * 2002-11-29 2005-12-14 宇振技术21有限公司 Flame retardant coating composition and method of preparing the same
CN103304883A (en) * 2012-03-14 2013-09-18 中国科学院化学研究所 Composition of halogen-free flame-retardant ethylene/vinyl acetate copolymer of phosphorus-containing heterocyclic compound
CN106220684A (en) * 2016-07-04 2016-12-14 清远市普塞呋磷化学有限公司 A kind of preparation method of nitrogenous Phosphaphenanthrene derivative flame retardant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1708562A (en) * 2002-11-29 2005-12-14 宇振技术21有限公司 Flame retardant coating composition and method of preparing the same
CN103304883A (en) * 2012-03-14 2013-09-18 中国科学院化学研究所 Composition of halogen-free flame-retardant ethylene/vinyl acetate copolymer of phosphorus-containing heterocyclic compound
CN106220684A (en) * 2016-07-04 2016-12-14 清远市普塞呋磷化学有限公司 A kind of preparation method of nitrogenous Phosphaphenanthrene derivative flame retardant

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