CN110092060A - A kind of long fibre and the pallet and its preparation process of fabric mixing enhancing - Google Patents
A kind of long fibre and the pallet and its preparation process of fabric mixing enhancing Download PDFInfo
- Publication number
- CN110092060A CN110092060A CN201910301233.8A CN201910301233A CN110092060A CN 110092060 A CN110092060 A CN 110092060A CN 201910301233 A CN201910301233 A CN 201910301233A CN 110092060 A CN110092060 A CN 110092060A
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- China
- Prior art keywords
- fabric
- pallet
- long fibre
- thermoplastic resin
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/14—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length of filaments or wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D19/38—Details or accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7178—Pallets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00014—Materials for the load supporting surface
- B65D2519/00034—Plastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00049—Materials for the base surface
- B65D2519/00069—Plastic
Abstract
The invention discloses a kind of long fibre and the pallets and its preparation process of fabric mixing enhancing, the pallet is made by the thermoplastic resin and fabric of long fiber reinforcement by plastic uptake or blow molding process, the thermoplastic resin of the long fiber reinforcement includes: thermoplastic resin, glass fibre and auxiliary agent, and wherein the weight ratio of thermoplastic resin, glass fibre and auxiliary agent is (6~7): (2~3): 1；Raw material sources of the present invention are extensive, cheap, and shaping efficiency is high, are suitable for industrialized mass production；In addition, since the addition of fiber and fabric is so that the intensity and toughness of pallet have increases substantially, it is obvious compared to traditional metal material loss of weight.
Description
[technical field]
The present invention relates to field of compound material, and in particular to the pallet and its preparation of a kind of long fibre and fabric mixing enhancing
Technique.
[background technique]
Pallet is the matching used Logistic Units of logistics equipments such as a kind of and fork truck, shelf, can be used to store, loads, removes
Cargo transport object is one of essential logistics equipment in Modern Materials Circulation storage.The appearance of plastic pallet has adapted to the need of environmental protection
It wants, replaces wood composite pallet that can reduce the destruction to forest using plastic pallet.
Existing pallet moulding process includes plastic uptake, blow molding, molding, injection molding etc., wherein plastic-suction forming equipment and mold take
It is a kind of both economical method for processing forming with low；Vacuum plastics sucking molding technique is a kind of thermoforming processing method, utilizes heat
Plastic material manufactures shedding shell product, and plastic sheet is specifically cut into certain size and is heated and softened, by plastic sheet
The draught head or mechanical pressure of two sides are affixed on particular mold profile after deforming it, by cooling and shaping, form product.
Blow-molding tray product selects HMW(high molecular weight)-high density polyethylene resin, is squeezed out a blow molding, and forming process is quick, fills
Point, formed product is full, and inherent quality and performance are stablized.But since plastic uptake and blow-molding tray are all made of plastics, and it is normal
Rule plastic material itself has that intensity, toughness and weatherability are poor.
[summary of the invention]
It is an object of the present invention in view of the drawbacks of the prior art, provide a kind of high bearing strength, pallet of good toughness and
Its preparation process.
To achieve the goals above, the present invention adopts the following technical scheme: a kind of long fibre and the support of fabric mixing enhancing
Disk, the pallet are made by the thermoplastic resin and fabric of long fiber reinforcement；The wherein thermoplastic resin of the long fiber reinforcement
Include following component: the weight ratio of thermoplastic resin, glass fibre, auxiliary agent, the thermoplastic resin, glass fibre and auxiliary agent is
(6~7): (2~3): 1.
Preferably, the thermoplastic resin is selected from the combination of one or both of polypropylene, polyethylene.
Preferably, the fabric is in fiberglass gridding cloth, carbon fiber mesh fabric or basalt fibre grid cloth
It is a kind of.
Preferably, the auxiliary agent is maleic anhydride graft PP, elastomer POE, stabilizer, fire retardant, Masterbatch, described each
The weight ratio of auxiliary agent are as follows: (4~6): (1.5~3): (0.5~1.5): (0.5~1.5): (0.5~1.5), preferably are as follows: 4:2:1:
1:1。
The present invention also provides a kind of preparation processes of above-mentioned pallet, include the following steps:
(1) preparation of mixed material: thermoplastic resin and each auxiliary agent are mixed to get in batch mixer according to the proportion
Even mixed material；
(2) mixed material obtained in step (1) preparation for the thermoplastic resin that long fibre enhances online: is sent into level-one
It is plasticized in screw extruder, while continuous glass fibre is equal together with the material after melting by the dedicated feed inlet of fiber
Change, plasticate to obtain the thermoplastic resin that long fibre enhances online；
(3) moulding process is selected from one or both of following two technique:
A plastics sucking moulding technique:
A1: the thermoplastic resin that long fibre obtained in step (2) is enhanced online is sent into sheet extruder, extrusion sheet
And it cuts；A2: sheet material made from step a1 is preheated by infrared ray preheating equipment, is heated to molten；A3: will be pre-
The good fabric of heat is layered on the mold area of vacuum suction moulding machine, and the material of molten condition made from step a2 is sent into plastics suction mould
Plastic uptake is carried out after area and fabric mixing, obtains the plastic-sucking tray of long fibre and fabric mixing enhancing through cooling and shaping, demoulding.
B blow moulding process:
B1: the thermoplastic resin that long fibre obtained in step (2) enhances online is placed in extrusion System of Hollow Blow Shaping Machine
The middle tubular blank for squeezing out semi-molten shape；B2: in a mold by preheated fabric covering, then tubular blank obtained is set
In mold, after blank terminal carries out mechanical sealing die closing, compressed air is passed through into tubular blank immediately, by tubular blank
Inflation and fabric are welded together, and after cooling, demould the blow-molding tray up to long fibre and fabric mixing enhancing.
Preferably, the method that the thermoplastic resin that long fibre enhances online is prepared in the step (2) is using our company
A kind of patent " method that the online reinforced polypropylene of long fibre is directly molded " of earlier application, patent No. CN201810941812.4
The method of middle record, specific as follows:
The method is realized by following process units: described device include level-one screw extruder, second level twin-screw squeeze
Machine, extrusion-injection type adapted to injection system, clamping system, sequence lot dispersing stand out, the level-one screw extruder are provided with feed hopper, and second level is double
The first charging aperture of screw extruder is connect with the extrusion neck ring mold of level-one screw extruder, extrusion-injection type adapted to injection system and the double spiral shells of second level
The extrusion neck ring mold of bar extruder connects, and the clamping system is connect with extrusion-injection type adapted to injection system, and the sequence lot dispersing stand includes point
Fall apart shell, and is arranged horizontally in the fiber transmission channel of lot dispersing stand interior of shell, is provided in the fiber channel several
Fiber delivery port, the sequence lot dispersing stand and is arranged at the second charging aperture of second level double screw extruder, and fiber passes through sequence
Enter second level double screw extruder from second charging aperture after lot dispersing stand；The tearing of second-order screw rod is arranged in the second charging aperture
Area.
Described method includes following steps: the mixed material prepared in step (1) is passed through on level-one screw extruder
Feed hopper is added in level-one screw extruder and is plasticized, and the fused materials after plasticizing squeeze from the extrusion neck ring mold of level-one screw extruder
Out, into the first charging aperture of second level double screw extruder；Glass fibre is continuously inputted two in an orderly manner by sequence lot dispersing stand
The second charging aperture of grade double screw extruder, is further moulded after mixing with the melt polypropylene material from level-one screw extruder
Change；Finally the molten mixture after the plasticizing of second level double screw extruder is squeezed out to get long fibre using extrusion-injection type adapted to injection system
The thermoplastic resin enhanced online.
Preferably, the area of sheet material described in step a1 is moulded tray perspective plane in the plastics sucking moulding technique of step (3)
Long-pending 1.15~1.2 times, with a thickness of 0.3~2.0mm.
Preferably, the melting temperature of sheet material described in step a2 is 180~240 DEG C in the plastics sucking moulding technique of step (3),
Melting time is 20~40S.
Preferably, fabric described in step a3 is added using infrared ray preheating equipment in the plastics sucking moulding technique of step (3)
Heat is to 210 DEG C.
Preferably, in the blow moulding process of step (3) in step b1 when squeezing out tubular blank, setting, which squeezes out, hollow blows
Temperature in molding machine is 150~180 DEG C.
Preferably, the outer diameter of tubular blank and the transverse direction of moulded tray in step b1 in the blow moulding process of step (3)
Maximum gauge ratio is 1:(2~4).
Preferably, after molding in step b2 in the blow moulding process of step (3), compressed air is passed through to tubular blank
Pressure is 0.5~0.7MPA, and duration of ventilation is 150~250S.
Preferably, fabric described in step b2 is added using infrared ray preheating equipment in the blow moulding process of step (3)
Heat is to 210 DEG C.
Beneficial effects of the present invention: the pallet of long fibre and fabric mixing enhancing of the present invention is increased online by long fibre
Strong thermoplastic resin and fabric is made by plastic uptake or blow molding process, and raw material sources of the present invention are extensive, price
Cheaply, shaping efficiency is high, is suitable for industrialized mass production；In addition, due to fiber and fabric addition so that pallet intensity and
Toughness, which has, to be increased substantially, obvious compared to traditional metal material loss of weight.
[specific embodiment]
In order to make the objectives, technical solutions, and advantages of the present invention clearer, present invention following specific embodiments
It is illustrated.
Embodiment 1
(1) take 61% polypropylene, 4% maleic anhydride graft PP, 2% elastomer POE, 1% stabilizer, 1% fire retardant,
1% Masterbatch mixes in batch mixer, obtains uniform mixed material；
(2) it relies on method described in the patent CN201810941812.4 of earlier application and prepares what long fibre enhanced online
Polypropylene: the method is realized by following process units: described device includes level-one screw extruder, second level twin-screw extrusion
Machine, extrusion-injection type adapted to injection system, clamping system, sequence lot dispersing stand, the level-one screw extruder are provided with feed hopper, the double spiral shells of second level
The first charging aperture of bar extruder is connect with the extrusion neck ring mold of level-one screw extruder, extrusion-injection type adapted to injection system and second level twin-screw
The extrusion neck ring mold of extruder connects, and the clamping system is connect with extrusion-injection type adapted to injection system, and the sequence lot dispersing stand includes dispersion
Rack enclosure, and it is arranged horizontally in the fiber transmission channel of lot dispersing stand interior of shell, several fibres are provided in the fiber channel
Delivery port is tieed up, the sequence lot dispersing stand and is arranged at the second charging aperture of second level double screw extruder, fiber passes through sequence point
Enter second level double screw extruder from second charging aperture after falling apart；The tearing of second-order screw rod is arranged in the second charging aperture
Area；
Described method includes following steps: the mixed material prepared in step (1) is passed through on level-one screw extruder
Feed hopper is added in level-one screw extruder, and 20s is plasticized at 240 DEG C, and the melt polypropylene after plasticizing is from level-one Screw Extrusion
It is squeezed out at the extrusion of machine, into the first charging aperture of second level double screw extruder；By sequence lot dispersing stand by 30% glass fibers
The continuous second charging aperture for inputting second level double screw extruder in an orderly manner of dimension, with the melt polypropylene from level-one screw extruder
Material mixes laggard single stage plastication, and the temperature of plasticizing is 180 DEG C, time 40s；Finally utilize extrusion-injection type adapted to injection system by second level
Molten mixture after double screw extruder plasticizing squeezes out the polypropylene enhanced online to get long fibre.
(3) polypropylene of long fiber reinforcement obtained in step (2) is put into sheet extruder, extrusion sheet, by institute
1.18 times that sheet material is cut into pallet projected area are stated, with a thickness of 1.0mm；
(4) sheet material obtained in step (3) is preheated by infrared ray preheating equipment, setting preheating temperature is
180 DEG C, heating 40S to the sheet material is in molten；
It (5) is 8*8mm, weight 125g/m by screening area2Fiberglass gridding cloth according to mold area size cut
It to suitable dimension, and is heated to being layered on the mold area of vacuum suction moulding machine after 210 DEG C by infrared ray preheating equipment, will walk
Suddenly the material of molten condition obtained is sent into plastics suction mould area and carries out plastic uptake in (4), makes material and fiberglass gridding cloth welding
Together, long fibre being obtained through cooling and shaping, demoulding, the plastic-sucking tray enhanced is mixed with fabric.
Embodiment 2
(1) 50% polypropylene, 20% polyethylene, 5.5% maleic anhydride graft PP, 3% elastomer POE, 0.5% is taken to stablize
Agent, 0.5% fire retardant, 0.5% Masterbatch mix in batch mixer, obtain uniform mixed material；
(2) it relies on method described in the patent CN201810941812.4 of earlier application and prepares what long fibre enhanced online
Thermoplastic resin: the method is realized by following process units: described device includes level-one screw extruder, second level twin-screw
Extruder, extrusion-injection type adapted to injection system, clamping system, sequence lot dispersing stand, the level-one screw extruder are provided with feed hopper, second level
The first charging aperture of double screw extruder is connect with the extrusion neck ring mold of level-one screw extruder, and extrusion-injection type adapted to injection system and second level are double
The extrusion neck ring mold of screw extruder connects, and the clamping system is connect with extrusion-injection type adapted to injection system, and the sequence lot dispersing stand includes
Disperse rack enclosure, and be arranged horizontally in the fiber transmission channel of lot dispersing stand interior of shell, if being provided in the fiber channel
Dry fibers delivery port, the sequence lot dispersing stand and is arranged at the second charging aperture of second level double screw extruder, and fiber passes through suitable
Enter second level double screw extruder from second charging aperture after sequence lot dispersing stand；Tearing for second-order screw rod is arranged in the second charging aperture
Split plot；
Described method includes following steps: the mixed material prepared in step (1) is passed through on level-one screw extruder
Feed hopper is added in level-one screw extruder, and 30s is plasticized at 210 DEG C, and the fused materials after plasticizing are from level-one screw extruder
Extrusion at squeeze out, into the first charging aperture of second level double screw extruder；By sequence lot dispersing stand by 20% glass fibre
The second charging aperture for continuously inputting second level double screw extruder in an orderly manner, mixes with the fused materials from level-one screw extruder
Laggard single stage plastication, the temperature of plasticizing are 200 DEG C, time 30s；Finally second level twin-screw is squeezed using extrusion-injection type adapted to injection system
The molten mixture after machine plasticizing squeezes out the thermoplastic resin enhanced online to get long fibre out；
(3) thermoplastic resin of long fiber reinforcement obtained in step (2) is put into sheet extruder, extrusion sheet,
The sheet material is cut into 1.2 times of pallet projected area, with a thickness of 0.3mm；
(4) sheet material obtained in step (3) is preheated by infrared ray preheating equipment, setting preheating temperature is
240 DEG C, heating 20S to the sheet material is in molten；
It (5) is 8*8mm, weight 120g/m by screening area2Carbon fiber mesh fabric be cut to according to mold area size
Suitable dimension, and be heated to being layered on the mold area of vacuum suction moulding machine after 210 DEG C by infrared ray preheating equipment, by step
(4) material of molten condition obtained is sent into plastics suction mould area and carries out plastic uptake in, makes material and carbon fiber mesh fabric welding one
It rises, obtains long fibre through cooling and shaping, demoulding and mix the plastic-sucking tray enhanced with fabric.
Embodiment 3
(1) 65% polyethylene, 6% maleic anhydride graft PP, 1.5% elastomer POE, 0.5% stabilizer, 0.5% resistance are taken
Combustion agent, 1.5% Masterbatch mix in batch mixer, obtain uniform mixed material；
(2) it relies on method described in the patent CN201810941812.4 of earlier application and prepares what long fibre enhanced online
Thermoplastic resin: the method is realized by following process units: described device includes level-one screw extruder, second level twin-screw
Extruder, extrusion-injection type adapted to injection system, clamping system, sequence lot dispersing stand, the level-one screw extruder are provided with feed hopper, second level
The first charging aperture of double screw extruder is connect with the extrusion neck ring mold of level-one screw extruder, and extrusion-injection type adapted to injection system and second level are double
The extrusion neck ring mold of screw extruder connects, and the clamping system is connect with extrusion-injection type adapted to injection system, and the sequence lot dispersing stand includes
Disperse rack enclosure, and be arranged horizontally in the fiber transmission channel of lot dispersing stand interior of shell, if being provided in the fiber channel
Dry fibers delivery port, the sequence lot dispersing stand and is arranged at the second charging aperture of second level double screw extruder, and fiber passes through suitable
Enter second level double screw extruder from second charging aperture after sequence lot dispersing stand；Tearing for second-order screw rod is arranged in the second charging aperture
Split plot；
Described method includes following steps: the mixed material prepared in step (1) is passed through on level-one screw extruder
Feed hopper is added in level-one screw extruder, and 40s is plasticized at 180 DEG C, and the fused materials after plasticizing are from level-one screw extruder
Extrusion at squeeze out, into the first charging aperture of second level double screw extruder；By sequence lot dispersing stand by 25% glass fibre
The second charging aperture for continuously inputting second level double screw extruder in an orderly manner, mixes with the fused materials from level-one screw extruder
Laggard single stage plastication, the temperature of plasticizing are 220 DEG C, time 25s；Finally second level twin-screw is squeezed using extrusion-injection type adapted to injection system
The molten mixture after machine plasticizing squeezes out the thermoplastic resin enhanced online to get long fibre out；
(3) polyethylene of long fiber reinforcement obtained in step (2) is put into sheet extruder, extrusion sheet, by institute
1.15 times that sheet material is cut into pallet projected area are stated, with a thickness of 2mm；
(4) sheet material obtained in step (3) is preheated by infrared ray preheating equipment, setting preheating temperature is
200 DEG C, heating 30S to the sheet material is in molten；
It (5) is 8*8mm, weight 130g/m by screening area2Basalt fibre grid cloth according to the big cabinet in mold area
It cuts to suitable dimension, and is heated to being layered on the mold area of vacuum suction moulding machine after 210 DEG C by infrared ray preheating equipment, it will
The material of molten condition obtained is sent into plastics suction mould area and carries out plastic uptake in step (4), makes material and carbon fiber mesh fabric welding
Together, long fibre being obtained through cooling and shaping, demoulding, the plastic-sucking tray enhanced is mixed with fabric.
Embodiment 4
(1) take 61% polypropylene, 4% maleic anhydride graft PP, 2% elastomer POE, 1% stabilizer, 1% fire retardant,
1% Masterbatch mixes in batch mixer, obtains uniform mixed material；
(2) it relies on method described in the patent CN201810941812.4 of earlier application and prepares what long fibre enhanced online
Polypropylene: the method is realized by following process units: described device includes level-one screw extruder, second level twin-screw extrusion
Machine, extrusion-injection type adapted to injection system, clamping system, sequence lot dispersing stand, the level-one screw extruder are provided with feed hopper, the double spiral shells of second level
The first charging aperture of bar extruder is connect with the extrusion neck ring mold of level-one screw extruder, extrusion-injection type adapted to injection system and second level twin-screw
The extrusion neck ring mold of extruder connects, and the clamping system is connect with extrusion-injection type adapted to injection system, and the sequence lot dispersing stand includes dispersion
Rack enclosure, and it is arranged horizontally in the fiber transmission channel of lot dispersing stand interior of shell, several fibres are provided in the fiber channel
Delivery port is tieed up, the sequence lot dispersing stand and is arranged at the second charging aperture of second level double screw extruder, fiber passes through sequence point
Enter second level double screw extruder from second charging aperture after falling apart；The tearing of second-order screw rod is arranged in the second charging aperture
Area；
Described method includes following steps: the mixed material prepared in step (1) is passed through on level-one screw extruder
Feed hopper is added in level-one screw extruder, and 20s is plasticized at 240 DEG C, and the melt polypropylene after plasticizing is from level-one Screw Extrusion
It is squeezed out at the extrusion of machine, into the first charging aperture of second level double screw extruder；By sequence lot dispersing stand by 30% glass fibers
The continuous second charging aperture for inputting second level double screw extruder in an orderly manner of dimension, with the melt polypropylene from level-one screw extruder
Material mixes laggard single stage plastication, and the temperature of plasticizing is 180 DEG C, time 40s；Finally utilize extrusion-injection type adapted to injection system by second level
Molten mixture after double screw extruder plasticizing squeezes out the polypropylene enhanced online to get long fibre.
(3) thermoplastic resin that long fibre obtained in step (2) enhances online is placed in extrusion System of Hollow Blow Shaping Machine
In, be arranged blow molding machine in temperature be 180 DEG C, squeeze out semi-molten shape tubular blank, the outer diameter of the tubular blank with
The lateral maximum gauge ratio of moulded tray is 1:2；
It (4) is 8*8mm, weight 125g/m by screening area2Fiberglass gridding cloth according to mold area size cut
It to suitable dimension, and is heated to covering in a mold after 210 DEG C by infrared ray preheating equipment, then step (3) is made
Tubular blank injection mold in, after blank terminal carries out mechanical sealing die closing, pressure is passed through into tubular blank immediately is
The compressed air of 0.5MPA, gassing time 250s, so that tubular blank inflation and fabric are welded together, and after cooling, demoulding
Up to long fibre and the blow-molding tray of fabric mixing enhancing.
Embodiment 5
(1) 40% polypropylene, 20% polyethylene, 4% maleic anhydride graft PP, 2% elastomer POE, 1.5% is taken to stablize
Agent, 1.5% fire retardant, 1% Masterbatch mix in batch mixer, obtain uniform mixed material；
(2) it relies on method described in the patent CN201810941812.4 of earlier application and prepares what long fibre enhanced online
Thermoplastic resin: the method is realized by following process units: described device includes level-one screw extruder, second level twin-screw
Extruder, extrusion-injection type adapted to injection system, clamping system, sequence lot dispersing stand, the level-one screw extruder are provided with feed hopper, second level
The first charging aperture of double screw extruder is connect with the extrusion neck ring mold of level-one screw extruder, and extrusion-injection type adapted to injection system and second level are double
The extrusion neck ring mold of screw extruder connects, and the clamping system is connect with extrusion-injection type adapted to injection system, and the sequence lot dispersing stand includes
Disperse rack enclosure, and be arranged horizontally in the fiber transmission channel of lot dispersing stand interior of shell, if being provided in the fiber channel
Dry fibers delivery port, the sequence lot dispersing stand and is arranged at the second charging aperture of second level double screw extruder, and fiber passes through suitable
Enter second level double screw extruder from second charging aperture after sequence lot dispersing stand；Tearing for second-order screw rod is arranged in the second charging aperture
Split plot；
Described method includes following steps: the mixed material prepared in step (1) is passed through on level-one screw extruder
Feed hopper is added in level-one screw extruder, and 20s is plasticized at 230 DEG C, and the fused materials after plasticizing are from level-one screw extruder
Extrusion at squeeze out, into the first charging aperture of second level double screw extruder；By sequence lot dispersing stand by 30% glass fibre
The second charging aperture for continuously inputting second level double screw extruder in an orderly manner, mixes with the fused materials from level-one screw extruder
Laggard single stage plastication, the temperature of plasticizing are 210 DEG C, time 25s；Finally second level twin-screw is squeezed using extrusion-injection type adapted to injection system
The molten mixture after machine plasticizing squeezes out the thermoplastic resin enhanced online to get long fibre out；
(3) thermoplastic resin that long fibre obtained in step (2) enhances online is placed in extrusion System of Hollow Blow Shaping Machine
In, be arranged blow molding machine in temperature be 150 DEG C, squeeze out semi-molten shape tubular blank, the outer diameter of the tubular blank with
The lateral maximum gauge ratio of moulded tray is 1:4；
It (4) is 10*10mm, weight 115g/m by screening area2Fiberglass gridding cloth according to the big cabinet in mold area
It cuts to suitable dimension, and is heated to covering in a mold after 210 DEG C by infrared ray preheating equipment, then make step (3)
In the tubular blank injection mold obtained, after blank terminal carries out mechanical sealing die closing, pressure is passed through into tubular blank immediately
It after cooling, is taken off for the compressed air of 0.7MPA, gassing time 150s so that tubular blank inflation and fabric are welded together
Mould is up to long fibre and the blow-molding tray of fabric mixing enhancing.
Comparative example 1
The plastic-sucking tray of long fibre and fabric mixing enhancing is prepared according to the method for embodiment 1, and the difference with embodiment 1 exists
In polyacrylic content is 81%, long fiber content 10%.
Comparative example 2
The plastic-sucking tray of long fibre and fabric mixing enhancing is prepared according to the method for embodiment 1, and the difference with embodiment 1 exists
In polyacrylic content is 41%, long fiber content 50%.
Comparative example 3
The plastic-sucking tray of long fiber reinforcement is prepared according to the method for embodiment 1, the difference from embodiment 1 is that, omit step
Suddenly in (5) fiberglass gridding cloth addition.
Comparative example 4
The plastic-sucking tray for preparing long fiber reinforcement according to the method for embodiment 1, the difference with embodiment 4 be, step (5)
In fiberglass gridding cloth screening area be 12*12mm, weight 125g/m2, fiberglass gridding cloth passes through infrared ray
Preheating equipment is heated to 350 DEG C.
Comparative example 5
The blow-molding tray of long fibre and fabric mixing enhancing is prepared according to the method for embodiment 4, the difference with embodiment 1 exists
In polyacrylic content is 81%, long fiber content 10%.
Comparative example 6
The blow-molding tray of long fibre and fabric mixing enhancing is prepared according to the method for embodiment 4, the difference with embodiment 4 exists
In polyacrylic content is 41%, long fiber content 50%.
Comparative example 7
The blow-molding tray that long fiber reinforcement is prepared according to the method for embodiment 4, the difference with embodiment 4 are, omit step
Suddenly in (4) fiberglass gridding cloth addition.
Comparative example 8
The blow-molding tray that long fiber reinforcement is prepared according to the method for embodiment 4, the difference with embodiment 4 be, step (4)
In fiberglass gridding cloth screening area be 12*12mm, weight 125g/m2, fiberglass gridding cloth passes through infrared ray
Preheating equipment is heated to 150 DEG C.
Performance test:
Respectively to the performance of the embodiment of the present invention 1~3, plastic-sucking tray prepared by comparative example 1~3 and plain polypropylene pallet
It is tested, the results are shown in Table 1:
Table 1
As shown in Table 1, plastic-sucking tray made from plastic-sucking tray made from the embodiment of the present invention 1~3 and comparative example 1~4 and
Common pallet is obvious compared to performance indexes amplification, solves the problems, such as that pallet intensity is low in the prior art, poor toughness.
The performance of the blow-molding tray prepared respectively to the embodiment of the present invention 4~5, comparative example 5~8 is tested, as a result such as
Shown in table 2:
Table 2
As shown in Table 2, blow-molding tray made from the embodiment of the present invention 4~5 and blow-molding tray phase made from comparative example 5~8
It is more obvious than performance indexes amplification, solve the problems, such as that pallet intensity is low in the prior art, poor toughness.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for those skilled in the art
For member, various changes and changes are possible in this application.Within the spirit and principles of this application, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of long fibre and fabric mixing enhancing pallet, which is characterized in that the pallet by long fiber reinforcement thermoplasticity
Resin and fabric are made, wherein the thermoplastic resin of the long fiber reinforcement includes following components: thermoplastic resin, glass fibers
Dimension, auxiliary agent, the weight ratio of the thermoplastic resin, glass fibre and auxiliary agent are (6~7): (2~3): 1.
2. a kind of long fibre according to claim 1 and the pallet of fabric mixing enhancing, which is characterized in that the thermoplasticity
Resin is selected from the combination of one or both of polypropylene, polyethylene.
3. a kind of long fibre according to claim 1 and the pallet of fabric mixing enhancing, which is characterized in that the fabric choosing
From one of fiberglass gridding cloth, carbon fiber mesh fabric or basalt fibre grid cloth.
4. a kind of long fibre according to claim 1 and the pallet of fabric mixing enhancing, which is characterized in that the auxiliary agent is
Maleic anhydride graft PP, elastomer POE, stabilizer, fire retardant, Masterbatch, the mass ratio of each auxiliary agent are as follows: (4~6):
(1.5~3): (0.5~1.5): (0.5~1.5): (0.5~1.5), preferred mass ratio are as follows: 4:2:1:1:1.
5. the preparation process of any one of the claim 1-4 long fibre and the pallet of fabric mixing enhancing, which is characterized in that packet
Include following steps:
(1) preparation of mixed material: thermoplastic resin and each auxiliary agent are mixed to get uniformly in batch mixer according to the proportion
Mixed material；
(2) mixed material obtained in step (1) preparation for the thermoplastic resin that long fibre enhances online: is sent into level-one screw rod
It is plasticized in extruder, while continuous glass fibre being homogenized together with the material after melting by the dedicated feed inlet of fiber,
It plasticates to obtain the thermoplastic resin that long fibre enhances online；
(3) pallet moulding process is selected from one of following two technique:
A plastics sucking moulding technique: a1: the thermoplastic resin that long fibre obtained in step (2) is enhanced online is sent into sheet material and is squeezed out
Machine, extrusion sheet are simultaneously cut；A2: sheet material made from step a1 is preheated by infrared ray preheating equipment, is heated to melting
Melt shape；Preheated fabric: being layered on the mold area of vacuum suction moulding machine by a3, by the material of molten condition made from step a2
Plastic uptake is carried out after being sent into plastics suction mould area and fabric mixing, long fibre is obtained through cooling and shaping, demoulding and fabric mixes enhancing
Plastic-sucking tray；
B blow moulding process: it is hollow that the thermoplastic resin that long fibre obtained in step (2) enhances online b1: is placed in extrusion
The tubular blank of semi-molten shape is squeezed out in blow molding machine；B2: in a mold by preheated fabric covering, then will be obtained
Tubular blank injects in mold, after blank terminal carries out mechanical sealing die closing, is passed through compressed air into tubular blank immediately,
Tubular blank inflation and fabric are welded together, after cooling, demould the blow molding support up to long fibre and fabric mixing enhancing
Disk.
6. the preparation process of a kind of long fibre according to claim 5 and the pallet of fabric mixing enhancing, which is characterized in that
The area of sheet material described in step a1 is 1.15~1.2 times of moulded tray projected area in the plastics sucking moulding technique of step (3),
With a thickness of 0.3~2.0mm.
7. the preparation process of a kind of long fibre according to claim 5 and the pallet of fabric mixing enhancing, which is characterized in that
In the plastics sucking moulding technique of step (3) melting temperature of sheet material described in step a2 be 180~240 DEG C, the melting time be 20~
40S。
8. the preparation process of a kind of long fibre according to claim 5 and the pallet of fabric mixing enhancing, which is characterized in that
In the blow moulding process of step (3) in step b1 when squeezing out tubular blank, setting squeezes out the temperature in System of Hollow Blow Shaping Machine
Degree is 150~180 DEG C, and the outer diameter of the tubular blank of extrusion and the lateral maximum gauge ratio of moulded tray are 1:(2~4).
9. the preparation process of a kind of long fibre according to claim 5 and the pallet of fabric mixing enhancing, which is characterized in that
The pressure of compressed air described in step b2 is 0.5~0.7MPA, duration of ventilation 150 in the blow moulding process of step (3)
~250S.
10. the preparation process of a kind of long fibre according to claim 5 and the pallet of fabric mixing enhancing, feature exist
In fabric described in a3 and b2 is heated to 210 DEG C using infrared ray preheating equipment in step (3).
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Application publication date: 20190806 |