CN108327317A - A kind of long glass fiber reinforced polyolefin panels continuous production processes - Google Patents

A kind of long glass fiber reinforced polyolefin panels continuous production processes Download PDF

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Publication number
CN108327317A
CN108327317A CN201810113835.6A CN201810113835A CN108327317A CN 108327317 A CN108327317 A CN 108327317A CN 201810113835 A CN201810113835 A CN 201810113835A CN 108327317 A CN108327317 A CN 108327317A
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China
Prior art keywords
temperature
glass fiber
fiber reinforced
continuous production
plank
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Pending
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CN201810113835.6A
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Chinese (zh)
Inventor
石耀琦
赵茜菁
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SUZHOU HECHANG JUHE MATERIAL Co Ltd
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SUZHOU HECHANG JUHE MATERIAL Co Ltd
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Priority to CN201810113835.6A priority Critical patent/CN108327317A/en
Publication of CN108327317A publication Critical patent/CN108327317A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/40Shaping or impregnating by compression not applied
    • B29C70/50Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/40Shaping or impregnating by compression not applied
    • B29C70/50Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/521Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/40Shaping or impregnating by compression not applied
    • B29C70/50Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/525Component parts, details or accessories; Auxiliary operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/54Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/545Perforating, cutting or machining during or after moulding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00Flat articles, e.g. films or sheets
    • B29L2007/002Panels; Plates; Sheets

Abstract

The invention discloses a kind of long glass fiber reinforced polyolefin panels continuous production processes, include the following steps:Roving glass fiber is imported into pre-dispersing device heating, while polyolefin particles and auxiliary agent are sent into screw extruder heating melting after mixing;The roving glass fiber of molten mass and preheated processing that screw extruder is squeezed out imports melt impregnation device, and dipping temperature is 210 DEG C 230 DEG C, and dip time is 1s 10s, and impregnation pressure is 2 × 105Pa‑1×106Pa, dipping hauling speed are 0.1m/min 1m/min;Impregnated polymer is involved into melt impregnation device, introduces molding mouth mold extrusion molding plank, plank is involved after rolling roller group cooling and shaping by traction roller group, then carries out packaging and storing after the processing of surface electricity, cutting.Present invention ensures that roving glass fiber plays continuous humidification in polyolefin, make polyolefin panels that there is high rigidity, high impact, creep resisting excellent performance.

Description

A kind of long glass fiber reinforced polyolefin panels continuous production processes
Technical field:
The invention belongs to technical field of polymer materials, and in particular to a kind of long glass fiber reinforced polyolefin panels continuous production Technique.
Background technology:
Pultrusion is a kind of forming method of continuous production constant cross-section proximate matter, and main process is the fibre that will be soaked with resin Dimension continues through the heating mouth mold in a sizing face, squeezes out Excess resin, is cured under the conditions of traction.Typical pultrusion Technique is by sending yarn, impregnation, preforming, curing molding, traction and cutting action to form.The characteristics of moulding process be continuously at Type, production efficiency is high, and manufacturing cost is low, and product properties is stablized.But fiber content is difficult to control in existing pultrusion molding process System causes the shock resistance, stretch-proof and anti-bending strength of the plank prepared weaker, it is difficult to which the Special use for reaching certain industries is wanted It asks.
Invention content:
The present invention is intended to provide a kind of long glass fiber reinforced polyolefin panels continuous production processes, by by roving glass fiber along longitudinal direction It is uniformly distributed among plank greatly to improve the intensity of polyolefin panels, polyolefin panels is made to have lightweight to need various The field asked occupies a tiny space.
In order to solve the above technical problems, the technical scheme is that:A kind of long glass fiber reinforced polyolefin panels are continuously given birth to Production. art includes the following steps:
(1) roving glass fiber is imported into pre-dispersing device heating, the temperature of the pre-dispersing device is 170 DEG C -220 DEG C, simultaneously Polyolefin particles and auxiliary agent are sent into screw extruder heating melting after mixing, the temperature of the screw extruder is 150 ℃-250℃;
(2) roving glass fiber of the molten mass and preheated processing that squeeze out screw extruder imports melt impregnation device, dipping Temperature is 210 DEG C -230 DEG C, dip time 1s-10s, and impregnation pressure is 2 × 105Pa-1×106Pa, dipping hauling speed are 0.1m/min-1m/min;
(3) impregnated polymer is involved into melt impregnation device, introduces molding mouth mold extrusion molding plank, the molding mouth mold Temperature be 160 DEG C -240 DEG C, it is described molding mouth mold extruded velocity be 0.1m/min-0.5m/min;
(4) sheet forming is involved after rolling roller group cooling and shaping by traction roller group, then after the processing of surface electricity, cutting Carry out packaging and storing.
Further, the screw extruder in the step (1) is single screw extrusion machine, the single screw extrusion machine temperature control The temperature in 1st area is 155 DEG C, the temperature in 4th area of 205 DEG C of the temperature in 2nd area of temperature control, 3rd area of temperature control and temperature control is 225 DEG C, the temperature in 5th area of temperature control Degree is 235 DEG C, and the temperature of the single screw extrusion machine head is 235 DEG C.
Further, the dipping temperature of the melt impregnation device in the step (2) is 220 DEG C, dip time 5s, leaching Stain pressure is 1 × 106Pa, dipping hauling speed are 0.5m/min.
Further, the plank mouth mold in the step (3) is rack-style plank mouth mold, the rack-style plank mouth mold Temperature is 230 DEG C, extruded velocity 0.35m/min.
Further, the calendering roller group in the step (4) is made of three-roller calendar, and the three-roller calendar is away from molding The hauling speed of die extrusion mouth 5cm-15cm, the three-roller calendar are 0.2m/min-0.6m/min.
Further, the traction roller group in the step (4) is made of caterpillar tractor, the caterpillar tractor Hauling speed is 0.15m/min-0.55m/min.
Using above-mentioned technical proposal, the beneficial effects of the present invention are:A kind of long glass fiber reinforced polyolefin panels of the present invention Material continuous production processes, roving glass fiber content is controllable, impregnating effect is stablized, it is ensured that roving glass fiber plays continuous increasing in polyolefin Strong effect makes enhancing polyolefin panels that there is high rigidity, high impact, creep resisting excellent performance can be used for manufacturing vehicle All kinds of interior lining panels, box car outside plate, shock resistance reinforcing plate and industry and agriculture field various tuns etc..
Specific implementation mode
The technical solution in the present invention is clearly and completely described below in conjunction with specific embodiment, it is clear that retouched The embodiment stated is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, originally The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to the present invention The range of protection.
Embodiment 1
A kind of long glass fiber reinforced polyolefin panels continuous production processes of the present embodiment, include the following steps:
(1) roving glass fiber is imported into pre-dispersing device heating, pre-dispersing device carries out roving glass fiber while disperseing fiber Heating and drying, the temperature of pre-dispersing device are 170 DEG C, between polyethylene melting temperature and surface conditioning agent fail temperature it Between, while polyethylene particle and auxiliary agent are sent into screw extruder heating melting after mixing, extruder is Single screw extrusion Machine, the temperature in 1st area of single screw extrusion machine temperature control is 150 DEG C, the temperature in 4th area of 160 DEG C of temperature, 3rd area of temperature control and temperature control in 2nd area of temperature control Temperature for 170 DEG C, 5th area of temperature control is 190 DEG C, and the temperature of single screw extrusion machine head is 210 DEG C.
(2) roving glass fiber of the polyethylene melt and preheated processing that squeeze out single screw extrusion machine imports melt impregnation dress It sets, the dip roll of melt impregnation device has certain tension, since one fixed width is unfolded in the effect roving glass fiber of tension, in long glass Polyethylene melt enters between roving glass fiber and dip roll under fine dragging, and roving glass fiber surface is constantly by polyethylene melt It squeezes, polyethylene melt is made to penetrate into inside roving glass fiber, realize the dipping to roving glass fiber.Dipping temperature is 210 DEG C, when dipping Between be 1s, impregnation pressure be 2 × 105Pa, dipping hauling speed are 0.1m/min.
(3) impregnated polymer is involved into melt impregnation device, introduces molding mouth mold extrusion molding plank, molding mouth mold uses Rack-style plank mouth mold, rack-style plank mouth mold can shorten impregnated polymer in the residence time in head, more conducively be molded. The temperature of rack-style plank mouth mold is 160 DEG C, extruded velocity 0.1m/min;
(4) polyethylene board of rack-style plank die extrusion is cooled down via three-roller calendar composition press roll component Away from molding mouth mold extrusion 15cm, the hauling speed of three-roller calendar is 0.2m/min for sizing, wherein three-roller calendar.Three roll-ins The closer ray machine the better away from molding mouth mold extrusion, it is possible to reduce the contraction of product;The hauling speed of three-roller calendar should be slightly bigger than Extruded velocity can smooth away wrinkles and reduce the die swell internal stress of plank, play the role of good press polish in this way.
Polyethylene board through press roll component cooling and shaping is involved by traction roller group, then after the processing of surface electricity, cutting It is packed to get to final long glass fiber reinforced polyethylene board product.Wherein traction roller group is made of caterpillar tractor, The hauling speed of caterpillar tractor is 0.15m/min.In view of the cooling meat effect of polyethylene board, caterpillar tractor Hauling speed be slightly less than the hauling speed of three-roller calendar.
Embodiment 2
A kind of long glass fiber reinforced polyolefin panels continuous production processes of the present embodiment, include the following steps:
(1) roving glass fiber is imported into pre-dispersing device heating, the temperature of pre-dispersing device is 210 DEG C, while by polypropylene Grain and auxiliary agent are sent into single screw extrusion machine heating melting after mixing, the temperature in 1st area of single screw extrusion machine temperature control is 155 DEG C, The temperature in 4th area of 205 DEG C of temperature, 3rd area of temperature control and temperature control in 2nd area of temperature control is 225 DEG C, the temperature in 5th area of temperature control is 235 DEG C, single screw rod The temperature of cross-head is 235 DEG C.
(2) roving glass fiber of the polypropylene melt melt body and preheated processing that squeeze out single screw extrusion machine imports melt impregnation dress It sets, dipping temperature is 220 DEG C, dip time 5s, and impregnation pressure is 1 × 106Pa, dipping hauling speed are 0.5m/min.
(3) impregnated polymer is involved into melt impregnation device, introduces rack-style plank die extrusion sheet forming, rack-style The temperature of plank mouth mold is 230 DEG C, extruded velocity 0.35m/min.
(4) polypropylene board of rack-style plank die extrusion is cooled down via three-roller calendar composition press roll component Away from molding mouth mold extrusion 10cm, the hauling speed of three-roller calendar is 0.4m/min for sizing, wherein three-roller calendar.
The pick-up roll group that polypropylene board through press roll component cooling and shaping leads machine composition via caterpillar tractor again involves, Hauling speed is 0.35m/min, is packed after the processing of surface electricity, cutting increase to get to final roving glass fiber again later Strong polypropylene board product.
Embodiment 3
A kind of long glass fiber reinforced polyolefin panels continuous production processes of the present embodiment, include the following steps:
(1) roving glass fiber is imported into pre-dispersing device heating, the temperature of pre-dispersing device is 220 DEG C, while by polypropylene Grain and auxiliary agent are sent into single screw extrusion machine heating melting after mixing, the temperature in 1st area of single screw extrusion machine temperature control is 175 DEG C, The temperature in 4th area of 215 DEG C of temperature, 3rd area of temperature control and temperature control in 2nd area of temperature control is 235 DEG C, the temperature in 5th area of temperature control is 250 DEG C, single screw rod The temperature of cross-head is 235 DEG C.
(2) roving glass fiber of the polypropylene melt melt body and preheated processing that squeeze out single screw extrusion machine imports melt impregnation dress It sets, dipping temperature is 230 DEG C, dip time 10s, and impregnation pressure is 1.5 × 105Pa, dipping hauling speed are 1m/min
(3) impregnated polymer is involved into melt impregnation device, introduces rack-style plank die extrusion sheet forming, rack-style The temperature of plank mouth mold is 240 DEG C, extruded velocity 0.5m/min;
(4) polypropylene board of rack-style plank die extrusion is cooled down via three-roller calendar composition press roll component Away from molding mouth mold extrusion 5cm, the hauling speed of three-roller calendar is 0.6m/min for sizing, wherein three-roller calendar.
The pick-up roll group that polypropylene board through press roll component cooling and shaping leads machine composition via caterpillar tractor again involves, Hauling speed is 0.55m/min, is packed after the processing of surface electricity, cutting increase to get to final roving glass fiber again later Strong polypropylene board product.
Reference examples 1
A kind of long glass fiber reinforced polyolefin panels continuous production processes of this reference examples, preparation process are as follows:
(1) polyethylene particle and auxiliary agent are added in extruder, after being plasticized by extruder, are transported to high-temperature fusant slot In, high-temperature fusant slot internal temperature is 190 DEG C, and the temperature of screw extruder is 210 DEG C.
(2) by continuous glass-fiber with the speed drawing of 2.5m/min by being sufficiently impregnated in high-temperature fusant slot after, through branch pipe type Plank die extrusion is shaped, and the temperature of plank mouth mold is 200 DEG C, extruded velocity 0.5m/min;It is in blocks through pressure roller cooling, it obtains Long glass fiber reinforced polyethylene board.
Reference examples 2
A kind of long glass fiber reinforced polyolefin panels continuous production processes of this reference examples, preparation process are as follows:
(1) PP GRANULES and auxiliary agent are added in extruder, after being plasticized by extruder, are transported to high-temperature fusant slot In, high-temperature fusant slot internal temperature is 230 DEG C, and the temperature of screw extruder is 240 DEG C.
(2) by continuous glass-fiber with the speed drawing of 3.5m/min by being sufficiently impregnated in high-temperature fusant slot after, through branch pipe type Plank die extrusion is shaped, and the temperature of plank mouth mold is 210 DEG C, extruded velocity 0.5m/min;It is in blocks through pressure roller cooling, it obtains Long glass fiber-reinforced polypropylene plank.
The performance detection of long glass fiber reinforced polyethylene/polypropylene plank
Material number Bending strength (MPa) Shear strength (MPa)
Embodiment 1 237MPa 15MPa
Reference examples 1 157MPa 9.5MPa
Embodiment 2 345MPa 36MPa
Embodiment 3 313MPa 30MPa
Reference examples 2 275MPa 18.5MPa
It can be seen that by the above experimental result:A kind of long glass fiber reinforced polyolefin panels continuous production work using the present invention Long glass fiber reinforced polyethylene/polypropylene plank prepared by skill, bending strength and shear strength are greatly improved, and meet The various of all kinds of interior lining panels, the box car outside plate of manufacture vehicle, shock resistance reinforcing plate and industry and agriculture field large-scale are held The performance requirement etc. of device.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one The widest range caused.

Claims (6)

1. a kind of long glass fiber reinforced polyolefin panels continuous production processes, which is characterized in that include the following steps:
(1) roving glass fiber is imported into pre-dispersing device heating, the temperature of the pre-dispersing device is 170 DEG C -220 DEG C, while will be gathered Polyolefin pellets and auxiliary agent are sent into screw extruder heating melting after mixing, and the temperature of the screw extruder is 150 DEG C- 250℃;
(2) roving glass fiber of the molten mass and preheated processing that squeeze out screw extruder imports melt impregnation device, dipping temperature It it is 210 DEG C -230 DEG C, dip time 1s-10s, impregnation pressure is 2 × 105Pa-1×106Pa, dipping hauling speed are 0.1m/ min-1m/min;
(3) impregnated polymer is involved into melt impregnation device, introduces molding mouth mold extrusion molding plank, the temperature of the molding mouth mold Degree is 160 DEG C -240 DEG C, and the extruded velocity of the molding mouth mold is 0.1m/min-0.5m/min;
(4) sheet forming is involved after rolling roller group cooling and shaping by traction roller group, then is carried out after the processing of surface electricity, cutting Packaging and storing.
2. a kind of long glass fiber reinforced polyolefin panels continuous production processes as described in claim 1, which is characterized in that the step Suddenly the screw extruder in (1) is single screw extrusion machine, and the temperature in 1st area of single screw extrusion machine temperature control is 155 DEG C, temperature control 2 The temperature in 4th area of 205 DEG C of temperature, 3rd area of temperature control and temperature control in area is 225 DEG C, the temperature in 5th area of temperature control is 235 DEG C, and the single screw rod is squeezed The temperature for going out machine head is 235 DEG C.
3. a kind of long glass fiber reinforced polyolefin panels continuous production processes as described in claim 1, which is characterized in that the step Suddenly the dipping temperature of the melt impregnation device in (2) is 220 DEG C, dip time 5s, and impregnation pressure is 1 × 106Pa, dipping are led It is 0.5m/min to draw speed.
4. a kind of long glass fiber reinforced polyolefin panels continuous production processes as described in claim 1, which is characterized in that the step Suddenly the plank mouth mold in (3) is rack-style plank mouth mold, and the temperature of the rack-style plank mouth mold is 230 DEG C, and extruded velocity is 0.35m/min。
5. a kind of long glass fiber reinforced polyolefin panels continuous production processes as described in claim 1, which is characterized in that the step Suddenly the calendering roller group in (4) is made of three-roller calendar, and the three-roller calendar is described away from molding mouth mold extrusion 5cm-15cm The hauling speed of three-roller calendar is 0.2m/min-0.6m/min.
6. a kind of long glass fiber reinforced polyolefin panels continuous production processes as described in claim 1, which is characterized in that the step Suddenly the traction roller group in (4) is made of caterpillar tractor, and the hauling speed of the caterpillar tractor is 0.15m/min- 0.55m/min。
CN201810113835.6A 2018-02-05 2018-02-05 A kind of long glass fiber reinforced polyolefin panels continuous production processes Pending CN108327317A (en)

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