CN105345979A

CN105345979A - Outside-mold forming device for nanometer laminated composite materials

Info

Publication number: CN105345979A
Application number: CN201510664850.6A
Authority: CN
Inventors: 杨卫民; 程祥; 焦志伟; 谭晶; 阎华�; 谢鹏程; 李好义; 丁玉梅
Original assignee: Beijing University of Chemical Technology
Current assignee: Beijing University of Chemical Technology
Priority date: 2015-10-15
Filing date: 2015-10-15
Publication date: 2016-02-24
Anticipated expiration: 2035-10-15
Also published as: CN105345979B

Abstract

The invention discloses an outside-mold forming device for nanometer laminated composite materials. The outside-mold forming device is formed by sequentially connecting a calendaring machine and multiple sets of outer laminating devices and is placed horizontally. Each outer laminating device comprises a first splitting roller, a first splitting device, first double rollers, second double rollers, a first flow guider, first flow collecting rollers, a first heater, a three-roller calendaring machine, a second heater, second flow collecting rollers, a second flow guider, third double rollers, fourth double rollers, a second splitting roller, a second splitting device and a reversing roller. If k outer laminating devices are connected in series, at least n*m<2k> layers of multi-layer composite sheets can be obtained, and the final outer laminating device is connected with a granulator so that multi-layer composite master batches can be prepared. According to the outside-mold twisted laminating devices, the limitation of inside-mold laminating is broken through, moreover, the formed sheets are treated, natural twisting can be achieved, the precision is greatly improved, the cost is greatly lowered, and the problems that a mold cavity is hard to clean and internal pressure is too high due to a mold are solved; flow adjusters enable all equally divided flow to be uniform, and the laminating process is made to be balanced and stable.

Description

The outer shaped device of a kind of nanometer laminated composite material mould

Technical field

The invention belongs to macromolecular material advanced manufacturing technology field, relate to the mould outer stack device of nanometer laminated composite material mould outer shaped device, particularly extrusion molding and calendering formation combination.

Background technology

Nano composite material, due to its excellent combination property, is widely used in the fields such as Aero-Space, national defence, traffic.At present, some experts, scholar have done many-sided research on nano composite material forming method, propose the stacked composite material and preparation method thereof of a series of nanometer, this laminated nano composition has had important breakthrough in mechanical property, barrier property, electric conductivity, optical property etc.Patent of invention 200610022348.6 and patent of invention 200910237622.5, all be in series successively with the form of junction station, stacked device and shaped device, and the former stacked device is divided into by the stratiform rectangle melt of arrival end upper and lower twice, broadening to pile up and then realizes once stacked, because the loss of stacked more meeting build-ups of pressure is larger, flow resistance is larger, stacked number of times also will limit the performance of the maximum number of plies and material less greatly; The stacked device of the latter stratiform rectangle melt is divided into multiple tracks, is piled up form by 90-degree rotation in mould, broadening, because layering in mould too much can cause Mould Machining difficulty, the die cavity not problem such as easy cleaning.

Summary of the invention

For deficiency prepared by existing nanometer laminated composite material, proposition the object of the invention is to: solve the die cavity difficulty cleaning because stacked device causes, internal pressure loss is excessive, flow resistance is large, the defect of not visibleization, fundamentally remove mould structure, substitute with mould outer stack device, not only solve the problem and ensure enough numbers of plies, and be easy to realize and operation, high efficiency can obtain nanometer laminated composite material.Technical scheme of the present invention is that stacked device is become mould outer stack from mould inner stacks, and concrete scheme is as follows:

The outer shaped device of a kind of nanometer laminated composite material of the present invention mould, its production line is composed in series successively by calender and many group outer stack devices, parallel placement, the melt of or coextrusion blended by one or more extruder becomes the n synusia material of certain thickness and width through calender compacting extension, then extend under the effect of first outer stack device as at least n × m ²the sandwich construction sheet material of layer, again by becoming at least n × m after second outer stack device ⁴the layer composite material sheet material of layer.If connect k outer stack device, then can obtain at least n × m ^2kthe layer composite material sheet material of layer, last outer stack device is connected the master batch can prepared and have layer composite material with pelleter.Thus process laminated composite material by above-mentioned production line, wherein k>=2, n>=1, m>=2, such as get: n=2, m=16, k=2, then the number of plies is at least 2 × 16 ⁴=131072; Sheet thickness is 1mm, then minimum thickness is no more than 1/131072=7.6nm.

The outer shaped device of a kind of nanometer laminated composite material of the present invention mould, outer stack device comprises 1# splitting roller, 1# sheer, the two roller of 1#, the two roller of 2#, 1# air deflector, 1# confluxes roller, 1# heater, tri-roll press machine, 2# heater, 2# confluxes roller, 2# air deflector, the two roller of 3#, the two roller of 4#, 2# splitting roller, 2# sheer and reverse roller, wherein 1# sheer and 1# splitting roller vertically tangent, 2# sheer and 2# splitting roller vertically tangent, each composition is composed in series according to the sequence successively, parallel placement, reverse roller height adjustable, reverse roller is back guided by sheet material, sheet material after reverse roller no longer forward, but turn back to last group of calender.The round cutter group that 1# sheer and 2# sheer cutting knife that is all individual coaxially by (m-1), adjustable distance is formed, is driven respectively by 1# splitting roller, 2# splitting roller.When the n synusia material of one fixed width and thickness is cut to m equal portions through 1# sheer and 1# splitting roller.Each equal portions sheet material is moved by the two roller of 1# and the two roller strap of 2# and travels forward, retrotorsion 90 degree (needing manual torsion first) along 1# air deflector and 1# conflux roller converge fit together, width becomes original 1/m, thickness becomes original m doubly, again turn round afterwards and turn 90 degrees (needing manual torsion first), advanced by the square through hole of appropriate size in heater again, and utilize heater to become melt state to homogeneous heating in hole to make each equal portions, continue each equal portions in square hole the exit upper roller system of top roll and central roll formation and multiple roller systems (not shown) of follow-up interpolation in flow forward to tri-roll press machine extend and are shaped to n × m layer, the uniform original size layer stack structure sheet material of thickness.

After n × m synusia material flows out from the upper roller system of tri-roll press machine, back flowed by reverse roller, to conflux the lower roll system that central roll and lower roll are formed in roller, 2# heater and tri-roll press machine respectively by 2# sheer and 2# splitting roller, the two roller of 4#, the two roller of 3#, 2# air deflector, 2# afterwards, repeat said process, thus obtain n × m ²layer, the uniform original size layer stack structure sheet material of thickness.

The outer shaped device of a kind of nanometer laminated composite material of the present invention mould, for after guarantee mould outer stack, each equal portions sheet material flow is consistent, i.e. resulting sheet consistency of thickness, at the two roller of 1# and the two roller of 2# and increase by one group of flow regulator respectively between the two roller of 4# and the two roller of 3#, flow regulator is formed by fixedly connecting by the vertical roller of flow regulator horizontal roller and flow regulator is vertical, the vertical roller adjustable-height of flow regulator.Definition from left to right each equal portions label is 1,2 ..., m, the height of the vertical roller of corresponding flow regulator be hi (i value is 1,2 ..., m).The length of definition flow regulator part is l, and the length of part of confluxing is t, width is a, then hi can obtain by calculating.The flow regulator that each equal portions are corresponding vertical roller height is drawn by above-mentioned formulae discovery.

The outer shaped device of a kind of nanometer laminated composite material of the present invention mould, at 1# heater, 2# heater and 1# tractor, the 2# tractor that has the reciprocating horizontal motion vertical with the direction of motion can be added between tri-roll press machine respectively, this pulling motion can make melt according to required even width, be stably coated in tri-roll press machine effect before, thus ensure that the fabric width extending is identical with original sheet width.This structure can make stacked broadening rate increase considerably, and considerably reduces roller coefficient amount, enhances productivity, although stepped construction is uneven, material smallest dimension can reduce further.

The present invention carries out cutting process to after sheet material calendering formation broadening, effectively to its significantly decile, greatly can reduce outer stack device quantity, enhances productivity under the prerequisite ensureing enough numbers of plies; Although this example is applied to orthoscopic arrangement, because whole process utilizes single roller or the traction of two roller, freely can changes direction, S type, L-type, Z-type etc. can be changed into, space can be made to arrange more rational; Mould reverses stacked restriction of having broken mould inner stacks outward, and be in type sheet material process, naturally can reverse under without any the effect of mould, greatly improve precision and reduce costs, the problem such as overcome die cavity difficulty cleaning that mould causes and internal pressure is excessive; The flow regulator proposed can make each equal portions uniform flow, lamination process is balanced, stablizes.

Accompanying drawing explanation

Fig. 1 is the outer shaped device production line schematic diagram of a kind of nanometer laminated composite material of the present invention mould.

Fig. 2 is the structural representation of the outer shaped device outer stack device leading portion of a kind of nanometer laminated composite material of the present invention mould.

Fig. 3 is the structural representation of the outer shaped device outer stack device back segment of a kind of nanometer laminated composite material of the present invention mould.

Fig. 4 is the left view of the independent structure of flow regulator in the outer shaped device of a kind of nanometer of the present invention laminated composite material mould.

Fig. 5 is the front view of the outer shaped device flow regulator part of a kind of nanometer laminated composite material of the present invention mould.

Fig. 6 is that the outer shaped device of a kind of nanometer laminated composite material of the present invention mould confluxes the top view of part.

In figure, 1-melt, 2-calender, 3-first outer stack device, 4-second outer stack device, 5-sheet material, 6-1# splitting roller, 7-1# sheer, the two roller of 8-1#, 9-1# flow regulator, the two roller of 10-2#, 11-1# air deflector, 12-1# confluxes roller, 13-1# heater, 14-1# tractor, 15-tri-roll press machine, 16-2# tractor, 17-2# heater, 18-2# confluxes roller, 19-2# air deflector, the two roller of 20-3#, 21-2# flow regulator, the two roller of 22-4#, 23-2# splitting roller, 24-2# sheer, the reverse roller of 25-, 26-flow regulator horizontal roller, the vertical roller of 27-flow regulator.

Detailed description of the invention

The outer shaped device of a kind of nanometer laminated composite material of the present invention mould, its production line as shown in Figure 1, to be composed in series by calender 2, multiple outer stack device, parallel placement successively, has first outer stack device 3 and second outer stack device 4 shown in figure.Melt 1 that is blended by one or more extruder or coextrusion suppresses through calender 2 the n synusia material that extension becomes certain thickness and width, then extends under first outer stack device 3 acts on as at least n × m ²the sandwich construction sheet material of layer, again by becoming at least n × m after second outer stack device 4 ⁴the layer composite material sheet material of layer.If connect k outer stack device, then can obtain at least n × m ^2kthe layer composite material sheet material of layer, last outer stack device is connected the master batch can prepared and have layer composite material with pelleter.In this example, n=1, m=16, k=2, then the number of plies is at least 1 × 16 ⁴=65536; Sheet thickness is 1mm, then minimum thickness is no more than 1/65536=15nm.Thus process nanometer laminated composite material by above-mentioned production line, and for ensureing that yardstick is nanoscale, require k >=2.The outer shaped device of a kind of nanometer laminated composite material of the present invention mould, as shown in Figures 2 and 3, outer stack device comprises 1# splitting roller 6, 1# sheer 7, the two roller 8 of 1#, the two roller 10 of 2#, 1# air deflector 11, 1# confluxes roller 12, 1# heater 13, tri-roll press machine 15, 2# heater 17, 2# confluxes roller 18, 2# air deflector 19, the two roller 20 of 3#, the two roller 22 of 4#, 2# splitting roller 23, 2# sheer 24 and reverse roller 25, wherein 1# sheer 7 and 1# splitting roller 6 vertically tangent, 2# sheer 24 and 2# splitting roller 23 vertically tangent, each composition is composed in series according to the sequence successively, parallel placement.The round cutter group that 1# sheer 7 and 2# sheer 24 cutting knife that is all individual coaxially by (m-1), adjustable distance is formed, is driven respectively by 1# splitting roller 6,2# splitting roller 23.As shown in Figure 2, m equal portions are cut to when the n synusia material of one fixed width and thickness is through 1# sheer 7 and 1# splitting roller 6.Each equal portions sheet material is driven by the two roller 8 of 1# and the two roller 10 of 2# and travels forward, retrotorsion 90 degree (needing manual torsion first) along 1# air deflector 11 and 1# conflux roller 12 converge fit together, width becomes original 1/m, thickness becomes original m doubly, again turn round afterwards and turn 90 degrees (needing manual torsion first), advanced by the square through hole of appropriate size in heater 13 again, and utilize heater to become melt state to homogeneous heating in hole to make each equal portions, multiple roller systems (not shown) extension that square hole exit each equal portions continue upper roller system that flow forward forms to tri-roll press machine 15 li of top rolls and central roll and follow-up interpolation is shaped to n × m layer, the uniform original size layer stack structure sheet material of thickness.

As shown in Figure 3, after n × m synusia material flows out from the upper roller system of tri-roll press machine 15, back flowed by reverse roller 25, the lower roll system of roller 18,2# heater 17 and tri-roll press machine 15 li of central rolls and the lower roll formation of confluxing respectively by 2# sheer 24 and 2# splitting roller 23, the two roller 22 of 4#, the two roller 20 of 3#, 2# air deflector 19,2# afterwards, repeat said process, thus obtain n × m ²layer, the uniform original size layer stack structure sheet material of thickness.

The outer shaped device of a kind of nanometer laminated composite material of the present invention mould, as shown in Figures 2 and 3, for after guarantee mould outer stack, each equal portions sheet material flow is consistent, i.e. resulting sheet consistency of thickness, at the two roller 8 of 1# and the two roller 10 of 2# and increase by one group of flow regulator 9 and 21 respectively between the two roller 22 of 4# and the two roller 20 of 3#, concrete structure is shown in Fig. 4, be formed by fixedly connecting by the vertical roller of flow regulator horizontal roller 26 and flow regulator 27 is vertical, flow regulator vertical roller 27 adjustable-height, in this example, the scheme of getting is telescopic adjustment.As shown in Figure 4, definition from left to right each equal portions label is 1,2 ..., m, the height of the vertical roller 27 of corresponding flow regulator be hi (i value is 1,2 ..., m).As shown in Figure 5, the length defining flow regulator part is l.As shown in Figure 6, definition is confluxed, and length is partly t, width is a, then hi can obtain by calculating.The flow regulator that each equal portions are corresponding vertical roller height is drawn by above-mentioned formulae discovery.

The outer shaped device of a kind of nanometer laminated composite material of the present invention mould, as shown in Figure 2, at 1# heater 13,1# tractor 14,2# tractor 16 that one has the reciprocating horizontal motion vertical with the direction of motion between 2# heater 17 with tri-roll press machine 15, can be added respectively, this pulling motion can make melt according to required even width, stably be coated in before tri-roll press machine 15 acts on, thus ensure that the fabric width extending is identical with original sheet width.This structure can make stacked broadening rate increase considerably, and considerably reduces roller coefficient amount, enhances productivity, although stepped construction is uneven, material smallest dimension can reduce further.

Claims

1. the outer shaped device of nanometer laminated composite material mould, it is characterized in that: to be composed in series successively by calender and many group outer stack devices, parallel placement, the melt of or coextrusion blended by one or more extruder becomes the n synusia material of certain thickness and width through calender compacting extension, then extend under the effect of first outer stack device as at least n × m ²the sandwich construction sheet material of layer, again by becoming at least n × m after second outer stack device ⁴the layer composite material sheet material of layer, k outer stack device of connecting according to this, then obtain n × m ^2kthe layer composite material sheet material of layer, last outer stack device is connected the master batch can prepared and have layer composite material, k>=2, n>=1, m>=2 with pelleter.

2. the outer shaped device of a kind of nanometer laminated composite material mould according to claim 1, it is characterized in that: outer stack device comprises 1# splitting roller, 1# sheer, the two roller of 1#, the two roller of 2#, 1# air deflector, 1# conflux roller, 1# heater, tri-roll press machine, 2# heater, 2# conflux roller, 2# air deflector, the two roller of 3#, 4# two roller, 2# splitting roller, 2# sheer and reverse roller, wherein 1# sheer and 1# splitting roller vertically tangent, 2# sheer and 2# splitting roller vertically tangent, each composition is composed in series according to the sequence successively, parallel placement, reverse roller height adjustable.

3. according to the outer shaped device of claim 2 nanometer laminated composite material mould, it is characterized in that: 1# sheer and 2# sheer are all coaxial by m-1, the round cutter group of the cutting knife formation of adjustable distance, by 1# splitting roller, 2# splitting roller drives respectively, each equal portions sheet material is moved by the two roller of 1# and the two roller strap of 2# and travels forward, retrotorsion 90 degree along 1# air deflector and 1# conflux roller converge fit together, width becomes original 1/m, thickness becomes original m doubly, again turn round afterwards turn 90 degrees along 1# air deflector and 1# conflux roller converge fit together, width becomes original 1/m, thickness becomes original m doubly, again turn round afterwards and turn 90 degrees, advanced by the square through hole of appropriate size in heater again, and utilize heater to become melt state to homogeneous heating in hole to make each equal portions, multiple roller systems extension of upper roller system and follow-up interpolation that each equal portions in square hole exit continue top roll and central roll formation in flow forward to tri-roll press machine is shaped to n × m layer, the uniform original size layer stack structure sheet material of thickness, after n × m synusia material flows out from the upper roller system of tri-roll press machine, back flowed by reverse roller, to conflux the lower roll system that central roll and lower roll are formed in roller, 2# heater and tri-roll press machine respectively by 2# sheer and 2# splitting roller, the two roller of 4#, the two roller of 3#, 2# air deflector, 2# afterwards, repeat said process, thus obtain n × m ²layer, the uniform original size layer stack structure sheet material of thickness.

4. according to the outer shaped device of claim 2 nanometer laminated composite material mould, it is characterized in that: at the two roller of 1# and the two roller of 2# and increase by one group of flow regulator respectively between the two roller of 4# and the two roller of 3#, flow regulator is formed by fixedly connecting by the vertical roller of flow regulator horizontal roller and flow regulator is vertical, the vertical roller adjustable-height of flow regulator.

5. according to the outer shaped device of claim 2 nanometer laminated composite material mould, it is characterized in that: at 1# heater, 2# heater and 1# tractor and the 2# tractor that has the reciprocating horizontal motion vertical with the direction of motion can be added between tri-roll press machine respectively.