CN104827686B - A kind of string immersion system and method - Google Patents
A kind of string immersion system and method Download PDFInfo
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- CN104827686B CN104827686B CN201510297538.8A CN201510297538A CN104827686B CN 104827686 B CN104827686 B CN 104827686B CN 201510297538 A CN201510297538 A CN 201510297538A CN 104827686 B CN104827686 B CN 104827686B
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- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/504—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands
- B29C70/506—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands and impregnating by melting a solid material, e.g. sheet, powder, fibres
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/56—Tensioning reinforcements before or during shaping
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
A kind of string immersion system and method, molten resin is impregnated for natural plant fibre.String immersion system includes melt impregnation mould (1) and cooling rolling device (2), wherein, described melt impregnation mould (1) includes die cavity, feeding mouth (4) and the 48 secondary dip rolls pair in die cavity, per pair dip roll to being made up of upper dip roll (6), lower dip roll (5) and dip roll spring (7), dip roll (6) applies certain elastic pressure to dip roll spring (7) upwards, so that having certain pressure between upper dip roll (6) and lower dip roll (5)；Described cooling rolling device (2) includes 24 secondary pressure rollers pair, per the secondary pressure roller to being made up of upper pressure roller (9) and lower compression roller (10) and pressure roller spring (8), pressure roller (9) applies certain elastic pressure to pressure roller spring (8) upwards, so that having certain pressure between upper pressure roller (9) and lower compression roller (10).Natural plant fibre is combed into strips by the melt impregnation device, obtains natural long fiber reinforcement thermoplastic polymer pre-preg material.
Description
Technical field
The present invention relates to a kind of immersion system, more particularly to a kind of string immersion system；The application further relates to use
The string immersion system carries out the method that natural plant fibre impregnates molten resin, and the plant fibre obtained by this method
Dimension dipping molten resin reinforcing material.
Background technology
Limited by natural fiber form, it is (fine that natural fiber enhancing thermoplastic polymer composite material is mainly chopped fiber
Tie up length 0.2-0.4mm) enhancing thermoplastic polymer composite material, main preparation technology is first by just mixed fiber and material
Add banbury or double screw extruder mixing granulation, after by injection, extrusion or mould pressing process moulded products, due to granulating
Journey fiber is shortened by screw rod shearing, and resulting product intensity is affected, it is difficult to meet structural strength demand.
Last century Mo, international composite markets have emerged in large numbers long fiber reinforcement thermoplastic polymer, that is, generally say
LFRT (Long Fiber Reinforced Thermoplastic) pellet, wherein fibre length makes to be combined between 3-10mm
The mechanical property of material steps a stage.
The Chinese patent application of Application No. 201210251939.6 discloses a kind of natural fiber enhancing thermoplastic resin
Unidirectional prepreg tape and preparation method thereof, is characterized in that natural fiber and thermoplastic resin fibre are first combed into strip-shaped product, after
Heating roller is pressed into natural fiber/thermoplastic resin unidirectional prepreg tape.Although such an approach achieves long natural fiber prepreg stain
The preparation of material, but the technique needs that thermoplastic resin is first processed into threadiness, process it is cumbersome and to realize natural fiber with
The uniform mixing of resin fibre has larger difficulty.
The Chinese patent application of Application No. 201210315906.3 discloses a kind of continuous-filament woven fabric enhancing thermoplasticity
Resin composite materials and preparation method thereof, this method is that natural fiber or inorfil first are made into continuous-filament woven fabric, after
Fibrofelt surface spoons the good plastics of fusion plastification, makes resin wetting fibre felt by biobelt roll squeezer roll-in.Although this method
Long natural fiber reinforced thermolplastic composite material can be prepared, but natural fiber is made continuous fiber and knitted by technique needs
Thing, and it is closely knit to be arranged between fiber, influence resin is only suitable for preparing sheet products to the effect of impregnation of fiber, and the technique.
At present, the industrial production of LFRT pre-preg material is based on melt impregnation.Melt impregnation is to do glass fibre increasing
A kind of dipping method that strong material is more commonly used, is filled generally using thermoplastic polymer as matrix and with dipping using screw extruder
Put and be connected, Polymeric melt inlet runner and long fibre access road are orthogonal in the same plane or at an angle.
Its technical process is that continuous fiber tow is imported into a dipping die head under tension force traction, in order to improve the scattered of continuous fiber
And dipping effect, the devices such as jockey pulley need to be typically set in immersion system or continuous fiber drawing-in device.Jockey pulley presses sawtooth
Shape is arranged, continuous fiber wriggle bypass these jockey pulleys when it is under tension and be dispersed into monofilament, so as to ensure every fibre
Dimension can fully be infiltrated by thermoplastic melt.The Chinese patent application of such as Application No. 200910193484.5 is disclosed
A kind of long fiber reinforced plastics production fibre bundle fuse dipping die head and dipping method, the dipping arranged except zigzag
Roller, the inventive features, which are to use, has medium-altitude contact godet and noncontact godet pair, and reinforced plastics melt is past fine
The Radial Flow of tow is tieed up, the friction for reducing fibre single thread is lost, and makes the melt impregnation of continuous fiber tow in high impregnated wire
Stable operation under speed.Although melt impregnation procedure is simple, and dipping effect is good, in melt impregnation preparation process
The dip roll by zigzag arrangement is bypassed above and below middle continuous fiber needs, fiber needs to bear larger tension force, so institute at present
It is the higher fibre bundle melt impregnation of continuous, tenacity to be applied to single fiber disclosed melt impregnation equipment more, such as
Glass fibre and carbon fiber, and for single discontinuous natural plant fibre bar melt impregnation, if ribbon is not twisted, easily production
Raw fibre bundle phenomenon of rupture, and ribbon tenacity is improved after twisting, although the requirement of melt impregnation is met, but is added
Easily there is shredded dried bean curd line phenomenon in fibre dense after sth. made by twisting, dipping effect difference, so presently disclosed melt impregnation equipment and not applying to
In natural fiber.
The content of the invention
The purpose of the present invention, which is mainly, overcomes the structure of existing melt impregnation mould is not enough to be applied to plant fibre there is provided one kind
The melt impregnation equipment and dipping method of dimension.The present invention uses following technical scheme：
A kind of string immersion system, molten resin is impregnated for natural plant fibre, it is characterised in that including melting
Impregnation mold 1 and cooling rolling device 2, wherein, described melt impregnation mould 1 includes die cavity, feeding mouth and in die cavity
4 to 8 secondary dip rolls pair, per pair dip roll to being made up of upper dip roll 6, lower dip roll 5 and dip roll spring 7, dip roll bullet
The upward dip roll 6 of spring 7 applies certain elastic pressure, so that having certain pressure between upper dip roll 6 and lower dip roll 5
Power；Described cooling rolling device 2 includes 2 to 4 secondary pressure rollers pair, per the secondary pressure roller to by upper pressure roller 9 and lower compression roller 10 and pressure
Roller spring 8 is constituted, and the upward pressure roller 9 of pressure roller spring 8 applies certain elastic pressure so that upper pressure roller 9 and lower compression roller 10 it
Between have certain pressure.
Wherein, described upper dip roll 6 encloses 6-1 surely by upper dip roll and upper dip roll moving axis 6-2 is constituted, lower dip roll by
Lower dip roll encloses 5-1 and lower dip roll moving axis 5-2 compositions surely, and upper dip roll 6 and lower dip roll 5 are cylinder, pass through revolute
Mode is installed in melt impregnation mould 1, is that active drive rotating roller or fiber traction drive rotating roller, upper dip roll 6 is in leaching
It can be fluctuated under the elastic pressure of stain roller spring 7.
Wherein, the upper pressure roller 9 is made up of upper pressure roller Ding Quan and upper pressure roller moving axis, and lower compression roller 10 is by lower compression roller Ding Quan with
Pressure roller moving axis is constituted, and is installed on by revolute mode in cooling rolling device 2, upper pressure roller 9 and lower compression roller 10 are cylinder, are
Active drive rotating roller or fiber traction drive rotating roller, and upper pressure roller 9 can fluctuate under the elastic pressure of pressure roller spring 8.
The present invention also provides a kind of method that above-mentioned string immersion system is impregnated, and comprises the following steps：
1) natural plant fibre is combed into strips, obtains continuous natural plant fibre bar 3；
2) heating melt impregnation mould 1 arrives design temperature, insulation a period of time；
3) melt impregnation mould 1 is opened, by continuous natural plant fibre bar 3, through several secondary dip rolls pair, each leaching
Stain roller makes upper and lower two dip roll have certain pressure to upper dip roll spring 7, improves the frictional force between fiber, so that
Ensure that continuous natural plant fibre bar has enough tenacities, at the same thermoplastic fusion resin be added to by feeding mouth it is described
Melt impregnation mould 1, makes continuous natural plant fibre bar carry out melt impregnation with thermoplastic melt；
4) the natural plant fibre bar 3 that wraps will be infiltrated by cooling down the He of upper pressure roller 9 of rolling device 2 by resin melt
Between lower compression roller 10, pressure is provided by pressure roller spring 8, realize resin melt cooling and secondary point of natural plant fibre
Dissipate, obtain natural long fiber reinforcement thermoplastic polymer pre-preg material.
Wherein, the design temperature of melt impregnation mould 1 is 190 DEG C~220 DEG C, preferably 210 DEG C.
Wherein, the continuous natural plant fibre bar is selected from the ribbons such as jute, ramie, bamboo fibre.
Wherein, the thermoplastic resin is selected from vistanex.
The invention further relates to a kind of string dipping molten resin reinforcing material, it is characterised in that it is according to above-mentioned
It is prepared by method.
Compared with prior art, the present invention has advantages below：
The present invention realizes the melt impregnation to natural fiber bar in the case of not twisting, and both ensure that natural fiber was fluffy
State, be conducive to infiltration of the high viscosity molten resin to fiber, while the design of special melt impregnation mould is again there is provided day
Right ribbon bears requirement of the melt impregnation process compared with hightension；
Traditional melt impregnation mould is usually that continuous tow is obtained after by several jockey pulleys angularly
Certain tension force, makes fibre bundle be extended in tension force effect to both sides, but fiber, which is one side, to be pressurized, and obtains unilateral dipping.And
Dip roll in the melt impregnation mould of the present invention exists in pairs, and the tension force of ribbon is to apply pressure by spring to obtain, and
Different fiber tensions can be applied by changing spring, fibre bundle is two-sided compression when by dip roll pair, and both sides are soaked simultaneously
Stain；
The cooling rolling device of the present invention, not only makes molten resin quick solidification after model outlet, the day for getting well dipping
Right ribbon obtains enough tenacities, thermoplastic resin can be also pressed further by ribbon, make fiber and thermoplastic
Property resin reaches fine and close combination, so as to greatly improve the dipping effect of ribbon.
Brief description of the drawings
Fig. 1 strengthens thermoplastic resin melt impregnation equipment for the natural plant fibre of the present invention；
Fig. 2 is lower dip roll structure chart；
Fig. 3 is upper dip roll structure chart.
Wherein, 1- melt impregnations mould, 2- coolings rolling device, the continuous natural fiber bars of 3- (untwisted or few twisting),
The upper dip roll of dip roll, 6-, 7- dip rolls spring, 8- pressure rollers spring, the upper pressure rollers of 9-, 10- lower compression rollers, 1- under 4- feeding mouths, 5-
Under 1U shapes groove, 5-1 dip roll enclose surely, under 5-2 dip roll moving axis, the upper dip rolls of 6-1 enclose surely, the upper dip roll moving axis of 6-2.
Embodiment
With reference to specific embodiment, the present invention is further elaborated, but the present invention is not limited to following examples.Institute
It is conventional method unless otherwise instructed to state method.The material can be obtained from open commercial sources unless otherwise instructed.
Embodiment 1
As depicted in figs. 1 and 2, natural plant fibre dipping molten resin uses following device：Including melt impregnation mould 1
With cooling rolling device 2, wherein, described melt impregnation mould 1 includes die cavity, feeding mouth and 4 to the 8 secondary leachings in die cavity
Stain roller pair, dip roll is to being installed in the U-type groove 1-1 of mould, per pair dip roll to by upper dip roll 6, lower dip roll 5 and dipping
Roller spring 7 is constituted, and upper dip roll 6 encloses 6-1 surely by upper dip roll and upper dip roll moving axis 6-2 is constituted, and lower dip roll is by lower dipping
Roller encloses 5-1 and lower dip roll moving axis 5-2 compositions surely, and upper dip roll 6 and lower dip roll 5 are cylinder, are pacified by revolute mode
Loaded in melt impregnation mould 1, be active drive rotating roller or fiber traction drive rotating roller.The upper leaching at the upper two ends of dip roll 6
Stain roller encloses 6-1 and contacted respectively with dip roll spring 7 surely, and the upward dip roll 6 of dip roll spring 7 applies certain elastic pressure, on
Dip roll 6 can be fluctuated under the elastic pressure of dip roll spring 7 so that having between upper dip roll 6 and lower dip roll 5
There is certain pressure.
Described cooling rolling device 2 includes 2 to 4 secondary pressure rollers pair, per the secondary pressure roller to by upper pressure roller 9 and lower compression roller 10
Constituted with pressure roller spring 8, upper pressure roller 9 is made up of upper pressure roller Ding Quan and upper pressure roller moving axis (not shown), and lower compression roller 9 is by pushing
Roller is enclosed surely to be constituted with lower compression roller moving axis (not shown), and upper pressure roller 9 and lower compression roller 10 are installed on cooling by revolute mode
In rolling device 2, upper pressure roller 9 and lower compression roller 10 are cylinder, are that active drive rotating roller or fiber traction drive rotating roller.On
The upper pressure roller at the two ends of pressure roller 9 is enclosed surely to be contacted with pressure roller spring 8 respectively, and the upward pressure roller 9 of pressure roller spring 8 applies certain elasticity pressure
Power, upper pressure roller 9 can fluctuate under the elastic pressure of pressure roller spring 8, so that having between upper pressure roller 9 and lower compression roller 10
Certain pressure.The discharging opening 4 of melt impregnation mould 1 is connected (not shown) by connection member with extruder nozzle, is led to
The discharging opening is crossed to inject molten resin in the die cavity of melt impregnation mould 1.
The parameter such as dip roll and pressure roller diameter, level interval can be adjusted according to the thickness of fiber, intensity is impregnated, this reality
Example setting dipping roller diameter 8mm is applied, dip roll is to spacing 80mm, pressure roller diameter 8mm, and pressure roller is to level interval 80mm, first
Pressure roller pair is exported apart from 20mm with melt impregnation mould 1.
Continuous tossa is combed into strips, continuous tossa bar is obtained；
Heat 1 to 210 DEG C of melt impregnation mould, insulation a period of time；
Melt impregnation mould 1 is opened, continuous tossa bar is descended dip roll 5 and upper dip roll 6 through several pairs, leaching
Stain roller spring 7 make above and below two dip rolls there is certain pressure to improve the frictional force between fiber, so as to improve natural fiber
The tenacity of bar, while the high density polyethylene (HDPE) molten resin plastified is added into the fuse dipping die by feeding mouth 4
Tool 1, makes continuous natural fiber bar carry out melt impregnation with thermoplastic melt；
The continuous tossa bar wrapped will be infiltrated by cooling down rolling device 2 by high density polyethylene (HDPE) molten resin
Between upper pressure roller 9 and lower compression roller 10, pressure is provided by pressure roller spring 8, realize high density polyethylene (HDPE) molten resin cooling and
The twice dispersing of continuous tossa bar, obtains high density polyethylene (HDPE) enhancing tossa pre-preg material.
Prepared composite tossa content is 45%, and the stretching of long tossa enhancing high density polyethylene (HDPE) is strong
Spend for 101.7MPa (by GB/T 1040-2006 standard testings, 10mm/min), bending strength is that 141.3MPa (presses GB/
T9341-2000 standard testings, 10mm/min).
Embodiment 2
The device be the same as Example 1 that the present embodiment is used.
Continuous tossa is combed into strips, continuous tossa bar is obtained；
Heat 1 to 200 DEG C of melt impregnation mould, insulation a period of time；
Melt impregnation mould 1 is opened, continuous tossa bar is descended dip roll 5 and upper dip roll 6 through several pairs, leaching
Stain roller spring 7 make above and below two dip rolls there is certain pressure to improve the frictional force between fiber, so as to improve natural fiber
The tenacity of bar, while the low density polyethylene (LDPE) molten resin plastified is added into the fuse dipping die by feeding mouth 4
Tool 1, makes continuous natural fiber bar carry out melt impregnation with thermoplastic melt；
The continuous tossa bar wrapped will be infiltrated by cooling down rolling device 2 by low density polyethylene (LDPE) molten resin
Between upper pressure roller 9 and lower compression roller 10, pressure is provided by pressure roller spring 8, realize low density polyethylene (LDPE) molten resin cooling and
The twice dispersing of continuous tossa bar, obtains low density polyethylene (LDPE) enhancing tossa pre-preg material.
Prepared composite tossa mass content is 45%, continuous tossa enhancing low density polyethylene (LDPE)
Tensile strength is 95.8MPa (pressing GB/T 1040-2006 standard testings, 10mm/min), and bending strength is that 135.7MPa (presses GB/
T9341-2000 standard testings, 10mm/min).
Embodiment 3
The device be the same as Example 1 that the present embodiment is used.
Continuous ramee is combed into strips, continuous ramee bar is obtained；
Heat 1 to 210 DEG C of melt impregnation mould, insulation a period of time；
Melt impregnation mould 1 is opened, continuous ramee bar is descended dip roll 5 and upper dip roll 6 through several pairs, leaching
Stain roller spring 7 make above and below two dip rolls there is certain pressure to improve the frictional force between fiber, so as to improve natural fiber
The tenacity of bar, while the high density polyethylene (HDPE) molten resin plastified is added into the fuse dipping die by feeding mouth 4
Tool 1, makes continuous natural fiber bar carry out melt impregnation with thermoplastic melt；
The continuous ramee bar wrapped will be infiltrated by cooling down rolling device 2 by high density polyethylene (HDPE) molten resin
Between upper pressure roller 9 and lower compression roller 10, pressure is provided by pressure roller spring 8, realize high density polyethylene (HDPE) molten resin cooling and
The twice dispersing of continuous ramee bar, obtains high density polyethylene (HDPE) enhancing ramee pre-preg material.
Prepared composite ramee mass content is 40%, continuous ramee enhancing high density polyethylene (HDPE)
Tensile strength is 105.6MPa (pressing GB/T 1040-2006 standard testings, 10mm/min), and bending strength is that 144.3MPa (is pressed
GB/T9341-2000 standard testings, 10mm/min).
It should be readily apparent to one skilled in the art that presently preferred embodiments of the present invention is the foregoing is only, not to limit this
Invention, every any modifications, equivalent substitutions and improvements made within the spirit and principles in the present invention should be included in this hair
Within bright protection domain.
Claims (7)
1. a kind of string immersion system, the natural plant fibre for combing into strips impregnates molten resin, its feature exists
In, including melt impregnation mould (1) and cooling rolling device (2), wherein, described melt impregnation mould (1) includes die cavity, entered
Material mouth (4) and the secondary dip rolls pair of 4-8 in die cavity, per pair dip roll to by upper dip roll (6), lower dip roll (5) and leaching
Stain roller spring (7) is constituted, and dip roll (6) applies certain elastic pressure to dip roll spring (7) upwards, so that upper dip roll
(6) there is certain pressure between lower dip roll (5), the frictional force between fiber is improved, so as to ensure continuous natural plants
Ribbon has enough tenacities；Described upper dip roll (6) encloses (6-1) and upper dip roll moving axis (6- surely by upper dip roll
2) constitute, lower dip roll encloses (5-1) surely by lower dip roll and lower dip roll moving axis (5-2) constitutes, upper dip roll (6) and lower dipping
Roller (5) is cylinder, is installed on by revolute mode in melt impregnation mould (1), is that active drive rotating roller or fiber are led
Leader tape moves rotating roller, and upper dip roll (6) can be fluctuated under the elastic pressure of dip roll spring (7)；
Described cooling rolling device (2) includes the secondary pressure rollers pair of 2-4, per the secondary pressure roller to by upper pressure roller (9) and lower compression roller
(10) constituted with pressure roller spring (8), pressure roller (9) applies certain elastic pressure to pressure roller spring (8) upwards, so that upper pressure roller
(9) there is certain pressure between lower compression roller (10), realize resin melt cooling and secondary point of natural plant fibre
Dissipate, obtain natural long fiber reinforcement thermoplastic polymer pre-preg material；The upper pressure roller (9) is moved by upper pressure roller Ding Quan and upper pressure roller
Axle is constituted, and lower compression roller (10) is enclosed surely by lower compression roller to be constituted with lower compression roller moving axis, and being installed on chill roll by revolute mode press-fits
Put in (2), upper pressure roller (9) and lower compression roller (10) they are cylinder, be that active drive rotating roller or fiber traction drive rotating roller, on
Pressure roller (9) can fluctuate under the elastic pressure of pressure roller spring (8).
2. a kind of method that string immersion system using described in claim 1 is impregnated, comprises the following steps：
1) natural plant fibre is combed into strips, obtains continuous natural plant fibre bar (3)；
2) heating melt impregnation mould (1) arrives design temperature, insulation a period of time；
3) melt impregnation mould (1) is opened, by continuous natural plant fibre bar (3), through dip roll pair, dip roll spring
(7) make dip roll (6) and lower dip roll (5) that there is certain pressure, improve the frictional force between fiber, so as to ensure continuous
Natural plant fibre bar has enough tenacities, while thermoplastic fusion resin is added to the melt impregnation by feeding mouth
Mould (1), makes continuous natural plant fibre bar carry out melt impregnation with thermoplastic melt；
4) the natural plant fibre bar (3) that wraps will be infiltrated by cooling down the upper pressure roller (9) of rolling device (2) by resin melt
Between lower compression roller (10), by pressure roller spring (8) provide pressure, realize resin melt cooling and natural plant fibre two
It is secondary scattered, obtain natural long fiber reinforcement thermoplastic polymer pre-preg material.
3. method according to claim 2, it is characterised in that：Melt impregnation mould (1) design temperature be 190 DEG C~
220℃。
4. method according to claim 3, it is characterised in that：Melt impregnation mould (1) design temperature is 210 DEG C.
5. method according to claim 2, it is characterised in that：The continuous natural plant fibre bar is selected from jute, ramie
With bamboo fibre ribbon.
6. method according to claim 2, it is characterised in that：The thermoplastic resin is selected from vistanex.
7. a kind of string impregnates molten resin reinforcing material, it is characterised in that it is according to one of claim 2-6
It is prepared by method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510297538.8A CN104827686B (en) | 2015-06-04 | 2015-06-04 | A kind of string immersion system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510297538.8A CN104827686B (en) | 2015-06-04 | 2015-06-04 | A kind of string immersion system and method |
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| CN104827686A CN104827686A (en) | 2015-08-12 |
| CN104827686B true CN104827686B (en) | 2017-10-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107234817B (en) * | 2017-05-19 | 2019-07-26 | 北京航空航天大学 | It is a kind of can accurate piddler compaction apparatus controllable in real time |
| CN108099225B (en) | 2017-12-18 | 2023-10-31 | 金发科技股份有限公司 | Alternating pressure melting impregnation equipment and melting impregnation method |
| CN109822777B (en) * | 2019-02-27 | 2021-07-09 | 南京特塑复合材料有限公司 | Continuous fiber impregnation method |
| CN110810570A (en) * | 2019-12-13 | 2020-02-21 | 广东省农业科学院茶叶研究所 | Rolling type tea processing equipment and rolling type tea processing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529652A (en) * | 1987-07-11 | 1996-06-25 | Kabushiki Kaisha Kobe Seiko Sho | Method of manufacturing continuous fiber-reinforced thermoplastic prepregs |
| CN102729483A (en) * | 2011-04-15 | 2012-10-17 | 中国海洋石油总公司 | Continuous long fiber-reinforced thermoplastic resin and its preparation method and molding equipment |
| CN203159829U (en) * | 2013-03-21 | 2013-08-28 | 宜兴市新立织造有限公司 | Compensable active warp-pacing warp tension device for carbon fiber weaving |
-
2015
- 2015-06-04 CN CN201510297538.8A patent/CN104827686B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529652A (en) * | 1987-07-11 | 1996-06-25 | Kabushiki Kaisha Kobe Seiko Sho | Method of manufacturing continuous fiber-reinforced thermoplastic prepregs |
| CN102729483A (en) * | 2011-04-15 | 2012-10-17 | 中国海洋石油总公司 | Continuous long fiber-reinforced thermoplastic resin and its preparation method and molding equipment |
| CN203159829U (en) * | 2013-03-21 | 2013-08-28 | 宜兴市新立织造有限公司 | Compensable active warp-pacing warp tension device for carbon fiber weaving |
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