CN105479648B - The preparation method of high power hot-stretch High molecular weight polyethylene sheet material - Google Patents

The preparation method of high power hot-stretch High molecular weight polyethylene sheet material Download PDF

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CN105479648B
CN105479648B CN201511014592.3A CN201511014592A CN105479648B CN 105479648 B CN105479648 B CN 105479648B CN 201511014592 A CN201511014592 A CN 201511014592A CN 105479648 B CN105479648 B CN 105479648B
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plane
width
depth
molecular weight
template
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CN105479648A (en
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刘嵩
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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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/24—Calendering
    • B29C43/245—Adjusting calender parameters, e.g. bank quantity
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • B29C2043/5816—Measuring, controlling or regulating temperature
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • B29C2043/5825—Measuring, controlling or regulating dimensions or shape, e.g. size, thickness
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • B29C2043/5875—Measuring, controlling or regulating the material feed to the moulds or mould parts, e.g. controlling feed flow, velocity, weight, doses
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity

Abstract

The invention provides a kind of preparation method of high power hot-stretch High molecular weight polyethylene sheet material, comprise the steps：1. taking 95 parts of polyvinyl resin with super-high molecular weight, 4.5 parts of Tissuemat E, 0.5 part of carbon black by weight, inserted after above-mentioned raw materials are mixed in single-screw extrusion machine, extrude blanket, the outlet installation thin plate extrusion die of single-screw extrusion machine；Rolled 2. blanket is imported in the first calender, obtain pre- blanket；Rolled 3. importing hot path heating and importing in calender pre- blanket, obtain pre- thin plate；Rolled 4. pre- thin plate is imported into hot path heating and imports calender, obtain finished sheet；5. shaping sheet is inserted into thermal finalization on heat setting machine, high power hot-stretch High molecular weight polyethylene sheet material is obtained.It is in light weight, thickness is small with sheet material prepared by the inventive method because surface is extremely smooth, it can be widely applied to the surface adhesion of each type objects such as easy fouling, perishable various objects and place, hull, submarine.

Description

The preparation method of high power hot-stretch High molecular weight polyethylene sheet material
Technical field
The present invention relates to High molecular weight polyethylene material, is a kind of preparation of high power hot-stretch High molecular weight polyethylene sheet material Method.
Background technology
High molecular weight polyethylene is due to having the advantages that shock resistance, wear-resisting, corrosion-resistant gradually industrially promote should With.It is mainly tubing in current application.The application of sheet material is mainly tried out on the product for civilian use.These High molecular weight polyethylene plates Material thickness is larger, and tensile strength is in below 25MPa, and hardness 45 or so, tensile strength and modulus of elasticity are all relatively low.Apply in industry Field performance and price advantage unobvious.Ultra high molecular weight polyethylene films piece has several obvious weakness：First, due to supra polymer The melt index of weight northylen is zero, and Screw Extrusion is extremely slow, and production and processing is slow, cycle length, influences the market competition of product Power；Second, superelevation raw material more expensive than High molecular weight polyethylene raw material 20% or so, cause product cost to rise；3rd, supra polymer Weight northylen strand is oversize, is not easy to weld and heats, and causes to make downstream product difficulty.Ultra high molecular weight polyethylene films piece is Using Screw Extrusion tubing, then tubing is splitted, flattens and makes sheet material blank, as a result internal stress be present in product diaphragm, Cause the easy torsional deformation of product, have impact on its use value.And High molecular weight polyethylene sheet material overcomes above-mentioned weakness, make and add Work is fast, and product cost is low, is easy to soldering hot melt manufacture downstream product, so as to which market application is more wide.
The content of the invention
It is an object of the present invention to provide a kind of preparation method of high power hot-stretch High molecular weight polyethylene sheet material and, by height Molecular weight polyethylene sheet material directly applies to industrially.
The present invention to achieve the above object, is achieved through the following technical solutions：High power hot-stretch High molecular weight polyethylene piece The preparation method of material, comprises the steps：
1. 95 parts of polyvinyl resin with super-high molecular weight, 4.5 parts of Tissuemat E, 0.5 part of carbon black are taken by weight, will be above-mentioned Inserted after raw material mixing in single-screw extrusion machine, extrude blanket, the outlet installation thin plate extrusion die of single-screw extrusion machine, thin plate Extrusion die sets the first feedboard and the second feedboard, the first feedboard and the second feedboard to go out respectively with single-screw extrusion machine Mouth connects, and the first feedboard is connected with first template one end, and the other end of the first template is connected with the first extrusion board, the second charging Plate is connected with second template one end, and the second template other end is connected with the second extrusion board, and the first discharging is opened up on the first extrusion board Groove, the second blow tank is opened up on the second extrusion board, the first feed well is opened up on the first feedboard, second is opened up on the second feedboard Feed well, the first bottom surface of the first feed well are inclined-plane, and the second bottom surface of the second feed well is inclined-plane, the lower surface of the first bottom surface With the angle α of the length direction of the first template1For 20 ° -35 °, upper end to the connection end of the first template of the first bottom surface sets the One faces directly, the lower surface of the second bottom surface and the angle α of the length direction of the second mould2For 20 ° -35 °, the upper end of the second bottom surface with The connection end of second template sets second to face directly, the first groove is opened up in the first template, the first groove is close to the first blow tank one End communicates with the first blow tank, and the first groove sets width and height identical with the first blow tank close to first blow tank one end The 3rd blow tank, the Breadth Maximum of the first groove is D9, the first groove is straight close to the width of first feedboard one end and first The width in face is identical, and the width of the first groove gradually increases to Breadth Maximum from close to the first feedboard upper end beginning, then gradually Shrink and be connected with the 3rd blow tank upper end, the first groove floor is from close to the first feedboard upper end to close to the 3rd blow tank Lower end sets gradually the first plane, the first inclined-plane and the first cambered surface, begins from the first cambered surface close to the one end on the first inclined-plane to close 3rd blow tank lower end only sets gradually the second inclined-plane, the 3rd inclined-plane, the 4th inclined-plane, the 5th inclined-plane and the 6th inclined-plane, the second mould The structure of plate is identical with the structure of the first template；
Rolled 2. blanket is imported in the first calender, obtain pre- blanket, the temperature of the first rolling mill roller is 120 DEG C -130 DEG C, the speed of the first calender is 0.2-0.5 ms/min；
3. pre- blanket is imported into the first hot path to heat, the temperature in the first hot path is 115 DEG C, the length in the first hot path For 1.5 meters, the pre- blanket by heating, which is imported in the second calender, to be rolled, and obtains pre- thin plate, the speed of the second calender For 0.8-2 ms/min, the temperature of the second rolling mill roller is 125 DEG C；
4. pre- thin plate is imported into the second hot path to heat, the length in the second hot path is 1.5 meters, the temperature in the second hot path For 120 DEG C, the pre- thin plate after heating imports the 3rd calender and rolled, and obtains finished sheet, the temperature of the 3rd rolling mill roller Spend for 110 DEG C, the speed of the 3rd calender is 2-5 ms/min；
5. shaping sheet is inserted into thermal finalization on heat setting machine, the platen temperature of heat setting machine is 130 DEG C -140 DEG C, is advanced After middle sizing 2-3 minutes, cooling calibrator sizing is imported, obtains high power hot-stretch High molecular weight polyethylene sheet material.Step 1. institute The second inclined-plane and the first depth of the 3rd inclined-plane intersection stated are L3, the first width be D3, the second inclined-plane intersects with the 4th inclined-plane Second depth at place is L4, the second width be D4, the 3rd depth of the 4th inclined-plane and the 5th inclined-plane intersection is L5, the 3rd width For D5, the 4th depth of the 5th inclined-plane and the 6th inclined-plane intersection is L6, the 4th width be D6, the first inclined-plane and the second inclined-plane phase The 5th depth at friendship is L2, the 5th width be D2, the 6th depth of the first inclined-plane and the first plane intersection is L1, it is the 6th wide Spend for D1, the 7th depth of the 6th inclined-plane and the 3rd blow tank intersection is L7, the 7th width be D7.The 6th depth L1It is 15-20mm, the 6th width D1It is 30-40mm；5th depth L2It is 50-60mm, the 5th width D2It is 250-280mm；First depth L3It is 40-45mm, the first width D3It is 300-350mm；Second depth L4It is 30-35mm, the second width D4It is 360-400mm；The Three depth L5It is 25-28mm, the 3rd width D5It is 420-450mm；4th depth L6It is 17-22mm, the 4th width D6It is 460- 500mm；7th depth L7It is 10-15mm, the 7th width D7It is 520-600mm.The 6th depth L1It is 20mm, the 6th width D1It is 40mm, the 5th depth L2It is 50mm, the 5th width D2It is 250mm, the first depth L3It is 45mm, the first width D3Be 300mm, Second depth L4It is 35mm, the second width D4It is 400mm, the 3rd depth L5It is 25mm, the 3rd width D5It is 450mm, the 4th depth L6It is 20mm, the 4th width D6It is 500mm, the 7th depth L7It is 15mm, the 7th width D7It is 550mm.The super high molecular weight is gathered The molecular weight of vinyl is the units of 50-99 ten thousand, and the molecular weight of Tissuemat E is 3000 units.Step 1. squeeze by described single screw rod The rotating speed of press is 13-18 revs/min.The roller bearing capacity of step 1. described single-screw extrusion machine is 20-30Mpa.First The thickness of template is 90mm, length 900mm.
High molecular weight polyethylene blank is carried out high power hot-stretch by the present invention, and draw ratio makes gained sheet material at 5-10 times Tensile strength greatly increase, increase to more than 100MPa from 25MPa, modulus of elasticity and hardness also increase 2-3 times, mechanical performance It is excellent, so as to be widely applied in industrial circle.It is of the invention that parison is directly made using extruder plate forming mold, Its internal stress is eliminated, then sheet material is made through high power hot-stretch, product is smoothly regular, and condition is splendid, and having expanded it significantly should Use field.Advantages of the present invention is embodied in the following aspects：The thickness of mould is 3 times of common polythene mould, length It is 3 times of common polythene mould；Because mold runner becomes very long, internal pressure is again very high, so only leaning on common polythene At die entrance row's transverse direction stove bolt be connected bolster be not on your life, will also mould longitudinal direction both sides set two Arrange diameter 60mm or so king-bolt；In order to which the raw material of mobility extreme difference is deployed in mould, the chi of one side die entrance It is very little to increase more than 3 times, and become flat by circle, the shunting and damping step in another aspect mould become multiple, each step It will increase, lengthen, while the both sides of runner are respectively arranged a wide but also deep groove not only, improve the circulation energy on runner both sides Power；Hard chrome plating after mold runner polishing；Mould outlet runner applies polytetrafluoro.
0.5 millimeter is can reach with the sheet thickness of the inventive method preparation is most thin, surface is without any bubble, myriametre length gas Bubble is detected as zero, can apply to the multiple fields such as industry, national defence.Through examining, longitudinal tensile strain rate 60%-100%；Longitudinal tension Intensity is 40-600MPa；Transverse tensile strength is 40-50MPa, cross direction elongation 100%-600%, and impact strength is 2-3 times of PE100 polyethylene section bars, environmental stress crack resistance ability are 2,5 times of PE100 polyethylene section bars, and anti-wear performance is 2 times of PE100 polyethylene section bars, it is 3-4 times of steel plate, fatigue durability is 40-60 times of PE100 polyethylene section bars.Sent out with this Sheet material prepared by bright method has the characteristics of self-lubricity is good, and inadhesion is good, is not chemically reacted with any material, and any Material is without affinity, non-scaling, not accompanying by marine organisms.The sheet density prepared with the inventive method is 0.95g/cm3, With preferable elongation at break, pliability and Lightness, with sheet material prepared by the inventive method because surface is extremely smooth, also It can be widely applied to easy fouling, perishable various objects and place.
With the inventive method prepare sheet material due to it is in light weight, thickness is small, can be widely applied to all kinds of things such as hull, submarine The surface adhesion of body.
Brief description of the drawings
Accompanying drawing 1 is that the present invention is arranged on the mould structure schematic diagram used on single-screw extrusion machine；Accompanying drawing 2 is in accompanying drawing 1 A-A cross section structure diagrams；Accompanying drawing 3 is B-B cross section structure diagrams in accompanying drawing 1.
Embodiment
The preparation method of high power hot-stretch High molecular weight polyethylene sheet material of the present invention, comprises the steps：
1. 95 parts of polyvinyl resin with super-high molecular weight, 4.5 parts of Tissuemat E, 0.5 part of carbon black are taken by weight, will be above-mentioned Inserted after raw material mixing in single-screw extrusion machine, extrude blanket, the outlet installation thin plate extrusion die of single-screw extrusion machine, thin plate Extrusion die sets the first feedboard 7 and the second feedboard 8, and the first feedboard 7 and the second feedboard 8 extrude with single screw rod respectively Machine outlet connects, and the first feedboard 7 is connected with the one end of the first template 1, and the other end of the first template 1 is connected with the first extrusion board 3, Second feedboard 8 is connected with the one end of the second template 2, and the other end of the second template 2 is connected with the second extrusion board 4, on the first extrusion board 3 The first blow tank 5 is opened up, the second blow tank 6 is opened up on the second extrusion board 4, the first feed well 9 is opened up on the first feedboard 7, the The second feed well 10, the first bottom surface A of the first feed well 9 are opened up on two feedboards 81For inclined-plane, the second of the second feed well 10 Bottom surface A2For inclined-plane, the first bottom surface A1Lower surface and the first template 1 length direction angle α1For 20 ° -35 °, the first bottom surface A1Upper end set to the connection end of the first template 1 and first face A directly3, the second bottom surface A2Lower surface and the second mould 26 length The angle α in direction2For 20 ° -35 °, the second bottom surface A2The connection end of upper end and the second template 2 set second to face A directly4, the first mould The first groove 11 is opened up on plate 1, the first groove 11 communicates close to the one end of the first blow tank 5 with the first blow tank 5, the first groove 11 Close to the one end of the first blow tank 5 set width and height with the blow tank 19 of 5 identical of the first blow tank the 3rd, the first groove 11 Breadth Maximum be D9, the first groove 11 faces A directly close to the width of the one end of the first feedboard 7 and first3Width it is identical, first The width of groove 11 gradually increases to Breadth Maximum from close to the upper end of the first feedboard 7 beginning, then gradually tapers up and goes out with the 3rd The upper end of hopper 19 connects, the bottom surface of the first groove 11 from close to the upper end of the first feedboard 7 to close to the lower end of the 3rd blow tank 19 according to The first plane B of secondary setting1, the first inclined-plane B2With the first cambered surface B3, from the first cambered surface B3Close to the first inclined-plane B2One end begin to leaning on Nearly lower end of 3rd blow tank 19 only sets gradually the second inclined-plane B4, the 3rd inclined-plane B5, the 4th inclined-plane B6, the 5th inclined-plane B7With the 6th Inclined-plane B8, the structure of the second template 2 is identical with the structure of the first template 1；
Rolled 2. blanket is imported in the first calender, obtain pre- blanket, the temperature of the first rolling mill roller is 120 DEG C -130 DEG C, the speed of the first calender is 0.2-0.5 ms/min；
3. pre- blanket is imported into the first hot path to heat, the temperature in the first hot path is 115 DEG C, the length in the first hot path For 1.5 meters, the pre- blanket by heating, which is imported in the second calender, to be rolled, and obtains pre- thin plate, the speed of the second calender For 0.8-2 ms/min, the temperature of the second rolling mill roller is 125 DEG C；
4. pre- thin plate is imported into the second hot path to heat, the length in the second hot path is 1.5 meters, the temperature in the second hot path For 120 DEG C, the pre- thin plate after heating imports the 3rd calender and rolled, and obtains finished sheet, the temperature of the 3rd rolling mill roller Spend for 110 DEG C, the speed of the 3rd calender is 2-5 ms/min；
5. shaping sheet is inserted into thermal finalization on heat setting machine, the platen temperature of heat setting machine is 130 DEG C -140 DEG C, is advanced After middle sizing 2-3 minutes, cooling calibrator sizing is imported, obtains high power hot-stretch High molecular weight polyethylene sheet material.Present invention side Upper and lower described in method is to make reference benchmark with shown position, the first template 1 and second described in the inventive method in mould The structure of template 2 is identical, and two templates form structure as shown in the figure after fastening.Raw material described in the inventive method is extruded through mould When, by the depth of various grooves in mould and the combination of width, each gradient, width reduce compression ratio, make material flow Each stage change in flow can not be too big and it is uniformly reached the purpose for removing blanket internal stress.The blanket stream of extrusion die Speed is relatively low, and the speed for extruding blanket is 0.3-0.8 ms/min.Sheet metal thickness prepared by the method for the present invention is most thin to reach 0.5 milli Rice, can reach the Mpa of endwise tensile strength 150, and longitudinal tensile strain rate reaches 30%, the Mpa of transverse tensile strength 30, transverse extension Rate is 300%.
The preferable scheme of the inventive method is：Step 1. described the second inclined-plane B4With the 3rd inclined-plane B5The first of intersection Depth is L3, the first width be D3, the second inclined-plane B5With the 4th inclined-plane B6Second depth of intersection is L4, the second width be D4, 4th inclined-plane B6With the 5th inclined-plane B73rd depth of intersection is L5, the 3rd width be D5, the 5th inclined-plane B7With the 6th inclined-plane B8 4th depth of intersection is L6, the 4th width be D6, the first inclined-plane B2 and the second inclined-plane B45th depth of intersection is L2、 5th width is D2, the first inclined-plane B2With the first plane B16th depth of intersection is L1, the 6th width be D1, the 6th inclined-plane B8 The 7th depth with the intersection of the 3rd blow tank 19 is L7, the 7th width be D7.This structure makes raw material in flowing, intermediate flow Speed is higher than both sides flow velocity, and the length of flow of raw material is longer, and the damping that the size variation of gradient is completed to raw material changes to uniform Process, the internal stress of blanket is thoroughly eliminated, makes blanket surface bubble-free.D in Fig. 29Width it is maximum：Generally 600mm- 800mm, D8Width be 500mm-600mm.The runner of the material flow of mould of the present invention is wide and flat, and the length of runner is about For 1000mm.Raw material flows into the runner that mould is walked：H9For 120mm, H8For 30mm, H7For 30mm, H6For 250mm, H5For 30mm, H4For 130mm, H3For 120mm, H2For 10mm, H1For 250mm.
Present invention scheme still more preferably is：6th depth L1It is 15-20mm, the 6th width D1It is 30-40mm；The Five depth L2It is 50-60mm, the 5th width D2It is 250-280mm；First depth L3It is 40-45mm, the first width D3It is 300- 350mm；Second depth L4It is 30-35mm, the second width D4It is 360-400mm；3rd depth L5It is 25-28mm, the 3rd width D5 It is 420-450mm；4th depth L6It is 17-22mm, the 4th width D6It is 460-500mm；7th depth L7It is 10-15mm, the 7th Width D7It is 520-600mm.
Preferred scheme is：6th depth L1It is 20mm, the 6th width D1It is 40mm, the 5th depth L2It is 50mm, the 5th width D2It is 250mm, the first depth L3It is 45mm, the first width D3It is 300mm, the second depth L4It is 35mm, the second width D4It is 400mm, the 3rd depth L5It is 25mm, the 3rd width D5It is 450mm, the 4th depth L6It is 20mm, the 4th width D6It is 500mm, Seven depth L7It is 15mm, the 7th width D7It is 550mm.
Step 1. described in the molecular weight of polyvinyl resin with super-high molecular weight be the units of 50-99 ten thousand, the unit of Tissuemat E Molecular weight is 3000 units.The rotating speed of step 1. described single-screw extrusion machine is 13-18 revs/min.Step 1. described list The roller bearing capacity of screw extruder is 20-30Mpa；The thickness of first template 1 is 90mm, length 900mm.
In figure 12 be the second groove, 13 be first step, 14 be second step, 15 be the 3rd step, 16 be the 4th step, 17 it is the first connecting cavity, 18 be the second connecting cavity, 20 is the 4th blow tank.
The non-detailed description of the present invention is known technology.

Claims (5)

1. the preparation method of high power hot-stretch High molecular weight polyethylene sheet material, it is characterised in that：Comprise the steps：
1. 95 parts of polyvinyl resin with super-high molecular weight, 4.5 parts of Tissuemat E, 0.5 part of carbon black are taken by weight, by above-mentioned raw materials Inserted after mixing in single-screw extrusion machine, extrude blanket, the outlet installation thin plate extrusion die of single-screw extrusion machine, thin plate extrusion Mould sets the first feedboard（7）With the second feedboard（8）, the first feedboard（7）With the second feedboard（8）Respectively with single screw rod Extruder outlet connects, the first feedboard（7）With the first template（1）One end connects, the first template（1）The other end and first squeeze Ejecting plate（3）Connection, the second feedboard（8）With the second template（2）One end connects, the second template（2）The other end and the second extrusion board （4）Connection, the first extrusion board（3）On open up the first blow tank（5）, the second extrusion board（4）On open up the second blow tank（6）, the One feedboard（7）On open up the first feed well（9）, the second feedboard（8）On open up the second feed well（10）, the first feed well （9）The first bottom surface（A1）For inclined-plane, the second feed well（10）The second bottom surface (A2）For inclined-plane, the first bottom surface (A1）Lower end Face and the angle α of the length direction of the first template (1)1For 20 ° -35 °, the first bottom surface (A1）Upper end to the first template (1) company Connecing end sets first to face (A directly3), the second bottom surface (A2）Lower surface and the second mould (26) length direction angle α2For 20 ° -35 °, the second bottom surface (A2) the connection end of upper end and the second template (2) set second to face (A directly4), in the first template (1) The first groove (11) is opened up, the first groove (11) communicates close to the first blow tank (5) one end with the first blow tank (5), and first is recessed Groove (11) close to the first blow tank (5) one end set width and height with the blow tank of the first blow tank (5) identical the 3rd (19), the Breadth Maximum of the first groove (11) is D9, width and first of the first groove (11) close to the first feedboard (7) one end Face (A directly3) width it is identical, the width of the first groove (11) close to the first feedboard (7) upper end from beginning gradually to increase to maximum Width, then gradually taper up and be connected with the 3rd blow tank (19) upper end, the first groove (11) bottom surface is from close to the first feedboard (7) upper end is risen to close to the 3rd blow tank (19) lower end and sets gradually the first plane (B1), the first inclined-plane（B2）With the first cambered surface （B3）, from the first cambered surface（B3）Close to the first inclined-plane（B2）One end begin to close to the 3rd blow tank（19）Lower end is only set gradually Second inclined-plane（B4）, the 3rd inclined-plane（B5）, the 4th inclined-plane（B6）, the 5th inclined-plane（B7）With the 6th inclined-plane（B8）, the second template（2）'s Structure and the first template（1）Structure it is identical；
Be rolled 2. blanket is imported in the first calender, and obtain pre- blanket, the temperature of the first rolling mill roller for 120 DEG C- 130 DEG C, the speed of the first calender is 0.2-0.5 ms/min；
3. pre- blanket is imported into the first hot path to heat, the temperature in the first hot path is 115 DEG C, and the length in the first hot path is 1.5 meters, the pre- blanket by heating, which is imported in the second calender, to be rolled, and obtains pre- thin plate, the speed of the second calender is 0.8-2 ms/min, the temperature of the second rolling mill roller is 125 DEG C；
4. pre- thin plate is imported into the second hot path to heat, the length in the second hot path is 1.5 meters, and the temperature in the second hot path is 120 DEG C, the pre- thin plate after heating imports the 3rd calender and rolled, and obtains finished sheet, the temperature of the 3rd rolling mill roller For 110 DEG C, the speed of the 3rd calender is 2-5 ms/min；
5. shaping sheet is inserted into thermal finalization on heat setting machine, the platen temperature of heat setting machine is 130 DEG C -140 DEG C, fixed in traveling After type 2-3 minutes, cooling calibrator sizing is imported, obtains high power hot-stretch High molecular weight polyethylene sheet material；
Step 1. described the second inclined-plane（B4）With the 3rd inclined-plane（B5）First depth of intersection is L3, the first width be D3, the Two inclined-planes（B5）With the 4th inclined-plane（B6）Second depth of intersection is L4, the second width be D4, the 4th inclined-plane（B6）It is oblique with the 5th Face（B7）3rd depth of intersection is L5, the 3rd width be D5, the 5th inclined-plane（B7）With the 6th inclined-plane（B8）The 4th of intersection Depth is L6, the 4th width be D6, the first inclined-plane（B2）With the second inclined-plane（B4）5th depth of intersection is L2, the 5th width For D2, the first inclined-plane（B2）With the first plane（B1）6th depth of intersection is L1, the 6th width be D1, the 6th inclined-plane（B8）With 3rd blow tank（19）7th depth of intersection is L7, the 7th width be D7, the 6th depth L1It is 15-20mm, the 6th width D1 It is 30-40mm；5th depth L2It is 50-60mm, the 5th width D2It is 250-280mm；First depth L3It is 40-45mm, first wide Spend D3It is 300-350mm；Second depth L4It is 30-35mm, the second width D4It is 360-400mm；3rd depth L5Be 25-28mm, 3rd width D5It is 420-450mm；4th depth L6It is 17-22mm, the 4th width D6It is 460-500mm；7th depth L7It is 10-15mm, the 7th width D7It is 520-600mm.
2. the preparation method of high power hot-stretch High molecular weight polyethylene sheet material according to claim 1, it is characterised in that：Institute The molecular weight for stating polyvinyl resin with super-high molecular weight is the units of 50-99 ten thousand, and the molecular weight of Tissuemat E is 3000 units.
3. the preparation method of high power hot-stretch High molecular weight polyethylene sheet material according to claim 1, it is characterised in that：Step The rotating speed of rapid 1. described single-screw extrusion machine is 13-18 revs/min.
4. the preparation method of high power hot-stretch High molecular weight polyethylene sheet material according to claim 1, it is characterised in that：Step The roller bearing capacity of rapid 1. described single-screw extrusion machine is 20-30Mpa.
5. the preparation method of high power hot-stretch High molecular weight polyethylene sheet material according to claim 1, it is characterised in that：The One template（1）Thickness be 90mm, length 900mm.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201669866U (en) * 2010-04-19 2010-12-15 中材科技股份有限公司 Teflon sheet extrusion die
CN101962820A (en) * 2010-10-14 2011-02-02 刘阜东 Superhigh molecular weight polyethylene monofilament and hot drawing processing method thereof
CN102320137A (en) * 2011-08-04 2012-01-18 山东和谐管业有限公司 Preparation device of ultra-high molecular weight polyethylene sheets and preparation method thereof
CN103317731A (en) * 2013-05-29 2013-09-25 北京华腾佳和科技有限公司 Device and method for preparation of ultra-high molecular-weight polyethylene sheet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201669866U (en) * 2010-04-19 2010-12-15 中材科技股份有限公司 Teflon sheet extrusion die
CN101962820A (en) * 2010-10-14 2011-02-02 刘阜东 Superhigh molecular weight polyethylene monofilament and hot drawing processing method thereof
CN102320137A (en) * 2011-08-04 2012-01-18 山东和谐管业有限公司 Preparation device of ultra-high molecular weight polyethylene sheets and preparation method thereof
CN103317731A (en) * 2013-05-29 2013-09-25 北京华腾佳和科技有限公司 Device and method for preparation of ultra-high molecular-weight polyethylene sheet

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