CN104530525A - Fibreless-core multi-wedge belt and preparation method thereof - Google Patents
Fibreless-core multi-wedge belt and preparation method thereof Download PDFInfo
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- CN104530525A CN104530525A CN201410811490.3A CN201410811490A CN104530525A CN 104530525 A CN104530525 A CN 104530525A CN 201410811490 A CN201410811490 A CN 201410811490A CN 104530525 A CN104530525 A CN 104530525A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
- B29D29/10—Driving belts having wedge-shaped cross-section
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/068—Ultra high molecular weight polyethylene
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- Polymers & Plastics (AREA)
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a fibreless-core multi-wedge belt and a preparation method thereof. Raw materials of the fibreless-core multi-wedge belt comprise the following ingredients in parts by mass: 100 parts of ultrahigh molecular weight polyethylene, 10-90 parts of polyethylene, 0.1-10 parts of a lubricant, 10-60 parts of filler and 0.1-10 parts of nano inorganic filler. The fibreless-core multi-wedge belt is made from ultrahigh molecular weight polyethylene through integrated molding, and fibers are not required to be additionally added as a skeleton, so that the production method is simple, and the production cost is reduced; the wear resistance is obviously improved.
Description
Technical field
The present invention relates to mechanical transmission fields, relate generally to a kind of without fiber core multi-wedge band and preparation method thereof.
Background technology
The ring-shaped rubber transmission belt that multi-wedge band refers to flat rubber belting to be matrix, internal surface is placed with equidistantly longitudinally 40 ° of trapezoidal wedges, its working face is the side of wedge.Its advantage is: without the contact area of fiber core multi-wedge band and belt wheel and frictional force comparatively large, load is along the distribution uniform of bandwidth, and thus transmission capacity is larger; Because belt body is thin and light, flexible, rational in infrastructure, therefore working stress is little, can work on less belt wheel; Multi-wedge band also has that transmission vibration is little, rapid heat dissipation, smooth running, use extend little, transmitting ratio large and limit line speed high, thus the life-span is longer; Energy-saving effect is obvious, and transmission efficiency is high; Transmission is compact, takes up space little.In addition, the back side of multi-wedge band also can transmission, and can use automatic tension regulator, makes transmission safer, reliable.Multi-wedge band is specially adapted to the high-speed drive that structural requirement is compact, transmission power is large.And wearing and tearing inevitably can appear in multi-wedge band in use for some time, and how to improve the fastness to rubbing of multi-wedge band, extending the work-ing life of multi-wedge band, is also the problem always studied.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of without fiber core multi-wedge band and preparation method thereof, described is that raw material is one-body molded without fiber core multi-wedge band with ultrahigh molecular weight polyethylene(UHMWPE), without the need to adding fiber in addition as skeleton, production method is simple, also reduces production cost, and, its wear resistance significantly improves, aim to provide a kind of one-body molded, cost be low, wear resisting property good, long service life without fiber core multi-wedge band.
Technical scheme of the present invention is as follows:
A kind of without fiber core multi-wedge band, wherein, its raw material forms, and according to the mass fraction, comprises following component:
Described without fiber core multi-wedge band, wherein, described ultrahigh molecular weight polyethylene(UHMWPE) to be molecular-weight average be 1,500,000 ~ 8,000,000 polyethylene.
Described without fiber core multi-wedge band, wherein, described polyethylene is one or more in high-pressure polyethylene, low pressure polyethylene.
Described without fiber core multi-wedge band, wherein, described lubricant is one or more in polyethylene wax, paraffin, stearic acid, calcium stearate, barium stearate, Zinic stearas; Described stopping composition is one or more in glass microballon, ceramic fine bead, aluminum oxide, silicon carbide, norbide; Described nanometer inorganic filler is one or more in nano silicon, nano aluminium oxide, nanomete talc powder, nano-calcium carbonate, nano imvite.
Described without fiber core multi-wedge band, wherein, described stopping composition is through coupling agent activation treatment.
Described without fiber core multi-wedge band, wherein, the process of described coupling agent activation treatment is the coupling agent of the total mass 0.5-3.5% getting stopping composition, with dehydrated alcohol according to 8-12: 1 volume ratio carry out dilution coupling agent; Limit is stirred stopping composition limit and is added coupling agent/dehydrated alcohol mixing solutions, after solution is all poured into, continue stirred for several minute, then the baking oven putting into design temperature 70 DEG C ~ 110 DEG C is dry, and porphyrize after taking out is for subsequent use;
Described coupling agent is one or more in silane coupling agent, titanate coupling agent, aluminate coupling agent.
Described without fiber core multi-wedge band, wherein, described coupling agent is silane coupling agent.
A preparation method without fiber core multi-wedge band as above, wherein, comprises the following steps:
Obtain ultrahigh molecular weight polyethylene(UHMWPE) and lubricant in proportion, high-speed stirring to 40 ~ 60 DEG C or 8 ~ 15 minutes; Add polyethylene, nanometer inorganic filler and by the stopping composition of coupling agent activation treatment again, high-speed stirring 3 ~ 5 minutes, discharging;
Extruded by forcing machine head mould and generate plane adhesive tape;
By the preheating 5 ~ 30 minutes at the temperature of 90 DEG C ~ 140 DEG C of plane adhesive tape, sizing material deliquescing, is conveyed under surface is provided with the roller of many wedge-shaped dies and carries out roll extrusion, sizing, make without fiber core multi-wedge band;
Wherein, the temperature of forcing machine is followed successively by 125 ± 5 DEG C from transportation section to head die, 160 ± 5 DEG C, 250 ~ 290 DEG C, 230 ~ 265 DEG C, 180 ~ 220 DEG C, 190 ~ 235 DEG C, 195 ~ 240 DEG C, 200 ~ 250 DEG C, 190 ~ 235 DEG C.
The described preparation method without fiber core multi-wedge band, wherein, the process of described coupling agent activation treatment is the coupling agent of the total mass 0.5-3.5% getting stopping composition, with dehydrated alcohol according to 8-12: 1 volume ratio carry out dilution coupling agent; Limit is stirred stopping composition limit and is added coupling agent/dehydrated alcohol mixing solutions, after solution is all poured into, continue stirred for several minute, then the baking oven putting into design temperature 70 DEG C ~ 110 DEG C is dry, and porphyrize after taking out is for subsequent use;
Described coupling agent is one or more in silane coupling agent, titanate coupling agent, aluminate coupling agent.
The described preparation method without fiber core multi-wedge band, wherein, described coupling agent is Silane coupling agent KH550.
Beneficial effect: ultrahigh molecular weight polyethylene(UHMWPE) is a kind of self-lubricating macromolecular material, and it is with high physical strength and shock resistance, low frictional coefficient and good wear resistance and famous.And superhigh molecular weight polyethylene fibers is also known as high-strength, high-modulus polyethylene fiber, be the fiber that current specific tenacity in the world and specific modulus are the highest, specific tenacity is more than ten times of equal cross section steel wire, and overall sheet will have higher intensity than fiber.Provided by the present invention is adopt ultrahigh molecular weight polyethylene(UHMWPE) to be raw material without fiber core multi-wedge band, preparation-obtained have high physical strength and shock-resistance without fiber core multi-wedge band, excellent wearability and chemical resistance, its wearability is compared with the most wear-resisting existing urethane multi-wedge band, work-ing life improves nearly 2 times, significantly improves the work-ing life without fiber core multi-wedge band.And the present invention is one-body molded without fiber core multi-wedge band, without the need to adding steel wire in addition as skeleton, production method is simple, also reduces production cost.
Embodiment
The invention provides a kind of without fiber core multi-wedge band and preparation method thereof, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Provided by the present invention without fiber core multi-wedge band, be take ultrahigh molecular weight polyethylene(UHMWPE) as raw material, adopt expressing technique to generate, one-body molded, without the need to adopting steel wire as skeleton.Particularly, described without fiber core multi-wedge band raw material composition, by massfraction, comprise following component:
Described ultrahigh molecular weight polyethylene(UHMWPE) is the ultrahigh molecular weight polyethylene(UHMWPE) of more than 1,500,000, and preferably molecular-weight average is 1,500,000 ~ 8,000,000.Add nano sized inorganic fillers in the present invention, lubricant carries out modification to described ultrahigh molecular weight polyethylene(UHMWPE), solve described ultrahigh molecular weight polyethylene(UHMWPE) melt viscosity high, a difficult problem for processing difficulties, make it by extruder for shaping, can be extruded one-body molded without fiber core multi-wedge band by forcing machine.
Described polyethylene is one or more in high-pressure polyethylene, low pressure polyethylene.High-pressure polyethylene and super-high molecular weight polythene blending is preferably added in the present invention, the defect such as solve the flexibility difference of ultrahigh molecular weight polyethylene(UHMWPE), fragility greatly easily fractures, improve elongation at break and the toughness of matrix material, what make to make has good flexural property without fiber core multi-wedge band.
Described lubricant can choose in polyethylene wax, paraffin, stearic acid, calcium stearate, barium stearate, Zinic stearas one or more.Lubricant is fully adsorbed on ultrahigh molecular weight polyethylene powder surface, plays a part to reduce force of cohesion between polymer molecule, thus improve the internal friction heat-dissipating of ultrahigh molecular weight polyethylene(UHMWPE) melt and the mobility of melt at polymeric inner.
Described stopping composition can choose in glass microballon, ceramic fine bead, aluminum oxide, silicon carbide, norbide one or more.Stopping composition can improve the described overall performance without fiber core multi-wedge band glue, and surface hardness, creep properties, flexural strength, heat-drawn wire can be made to be improved preferably; There is certain strengthening action, increase the described intensity without fiber core multi-wedge band and wear resistance; The frictional coefficient of matrix material can also be improved, to adapt to the appropriate frictional force needed for pulley belt.
Described stopping composition before being taken into use can through coupling agent activation treatment, due to the existence of coupling agent polar group, Van der Waals force between stopping composition and ultrahigh molecular weight polyethylene(UHMWPE) molecular chain changes look dispersion force into by simple look dispersion force and adds inductive capacity, add the entanglement effect of coupling agent molecule and ultrahigh molecular weight polyethylene(UHMWPE) chain, such stopping composition serves the effect of physical crosslinking point in ultrahigh molecular weight polyethylene(UHMWPE) matrix, and has incorporated the molecular entanglement network of ultrahigh molecular weight polyethylene(UHMWPE).
Described coupling agent can be one or more in silane coupling agent, titanate coupling agent, aluminate coupling agent, preferably selects silane coupling agent (KH550).The process of described coupling agent activation treatment, for getting stopping composition total mass 0.5-3.5% coupling agent, uses dehydrated alcohol 8-12: 1 (volume ratio) to carry out dilution coupling agent.The stopping composition weighed up is put into homogenizer stir, add coupling agent/dehydrated alcohol mixing solutions while stirring, after solution is all poured into, continue stirred for several minute mix, discharge stopping composition, put into the baking oven dry a few hours of design temperature 70 DEG C ~ 110 DEG C again, after taking out, porphyrize is placed in encloses container for subsequent use.
Described nano inorganic material can choose in silicon-dioxide, nano aluminium oxide, nanomete talc powder, nano-calcium carbonate, nano imvite one or more.Due to its nanometer size effect of nanometer inorganic filler, large specific surface area and strong interfacial interaction, the interfacial tension between inorganic fillings and ultrahigh molecular weight polyethylene(UHMWPE) matrix can be eliminated, the bonding interface of realizing ideal, eliminate inorganic fillings and the unmatched problem of ultrahigh molecular weight polyethylene(UHMWPE) matrix two material thermal expansivity, therefore the excellent mechanical performance of inorganic fillings can be given full play to, can by dimensional stability and thermostability and ultrahigh molecular weight polyethylene(UHMWPE) high strength, shock-resistant, wear-resistant, the performance perfect adaptations such as resistance to chemical attack, give without fiber core multi-wedge band more high strength, modulus, wear-resisting, impact strength performance, and have toughening effect.
In the present invention program, also provide the described production method without fiber core multi-wedge band:
Step 1: generate without fiber core multi-wedge band, described without fiber core multi-wedge band to extrude preparation technology as follows:
The process of a, described coupling agent activation treatment stopping composition, for getting stopping composition total mass 0.5-3.5% coupling agent, uses dehydrated alcohol 8-12: 1 (volume ratio) to carry out dilution coupling agent.The stopping composition weighed up is put into homogenizer stir, add coupling agent/dehydrated alcohol mixing solutions while stirring, after solution is all poured into, continue stirred for several minute mix, discharge stopping composition, put into the baking oven dry a few hours of design temperature 70 DEG C ~ 110 DEG C again, after taking out, porphyrize is placed in encloses container for subsequent use.
B, ultrahigh molecular weight polyethylene(UHMWPE) and lubricant drop into high speed mixer high speed in proportion and are stirred to 40 ~ 60 DEG C or 8 ~ 15 minutes, allow lubricant fully be adsorbed on ultrahigh molecular weight polyethylene powder surface; Add by stopping composition, polyethylene, the nanometer inorganic filler of coupling agent activation treatment again, high-speed stirring after 3 ~ 5 minutes discharging for subsequent use.
C, to be extruded by forcing machine head mould and generate plane adhesive tape: singe screw or twin screw extruder can be adopted, the temperature of forcing machine is followed successively by 125 ± 5 DEG C from transportation section to head die, 160 ± 5 DEG C, 250 ~ 290 DEG C, 230 ~ 265 DEG C, 180 ~ 220 DEG C, 190 ~ 235 DEG C, 195 ~ 240 DEG C, 200 ~ 250 DEG C, 190 ~ 235 DEG C.
Step 2: by the preheating 5 ~ 30 minutes at the temperature of 90 DEG C ~ 140 DEG C of plane adhesive tape, sizing material deliquescing, is conveyed under surface is provided with the roller of many wedge-shaped dies and carries out roll extrusion, sizing, make without fiber core multi-wedge band.
The present invention will be further described by the following examples.
In following examples, stopping composition used has carried out following coupling agent activation treatment:
Get the 1%KH550 of stopping composition total mass, carry out dilution KH550 with dehydrated alcohol 10: 1 (volume ratio).The stopping composition weighed up is put into homogenizer stir, add KH550/ dehydrated alcohol mixing solutions while stirring, stirring is continued 5 minutes after solution is all poured into, discharge stopping composition, put into dry 5 hours of the baking oven of design temperature 110 DEG C again, after taking out, porphyrize is placed in encloses container for subsequent use.
Embodiment 1: produce PK type without fiber core multi-wedge band
Step 1:
A, get 100 portions of ultrahigh molecular weight polyethylene(UHMWPE)s and lubricant stearic acid 1 part, calcium stearate 1.5 parts and drop into high speed mixer high speed and be stirred to 40 DEG C, allow lubricant fully be adsorbed on ultrahigh molecular weight polyethylene powder surface; Add by glass microballon 15 parts, high-pressure polyethylene 30 parts, the nano silicon 6 parts of KH550 coupling agent activation treatment again, high-speed stirring after 3 minutes discharging for subsequent use.
The temperature of b, twin screw extruder is followed successively by 125 DEG C from transportation section to head die, 160 DEG C, 265 DEG C, 240 DEG C, 190 DEG C, 195 DEG C, 200 DEG C, 205 DEG C, 200 DEG C; The plane adhesive tape of obtained thickness 7.5mm is extruded by forcing machine head mould.
Step 2:
Described plane adhesive tape is placed on Stainless Steel Band and is conveyed into the baking cabinet that temperature is 110 DEG C, setting plane adhesive tape is 20 minutes drying the time run in cabinet, from the plane adhesive tape drying in cabinet deliquescing out, continue to be conveyed under external peripheral surface is provided with the roller of many PK wedge-shaped dies and carry out continuous roll extrusion, sizing, make PK type without fiber core multi-wedge band.
Through detecting, the tensile strength 38.5Mpa of multi-wedge band glue, elongation at break reaches 280%, and obtained PK type has good flexibility without fiber core multi-wedge band, wear resistance is 2 times of urethane multi-wedge band.
Embodiment 2: produce PM type without fiber core multi-wedge band
Step 1:
A, get 100 portions of ultrahigh molecular weight polyethylene(UHMWPE)s and lubricant stearic acid 3 parts, calcium stearate 4 parts and drop into high speed mixer high speed and be stirred to 40 DEG C, allow lubricant fully be adsorbed on ultrahigh molecular weight polyethylene powder surface; Add by glass microballon 10 parts, high-pressure polyethylene 30 parts, the nano silicon 6 parts of KH550 coupling agent activation treatment again, high-speed stirring after 3 minutes discharging for subsequent use.
The temperature of b, single screw extrusion machine is followed successively by 125 DEG C from transportation section to head die, 160 DEG C, 265 DEG C, 240 DEG C, 190 DEG C, 195 DEG C, 200 DEG C, 205 DEG C, 200 DEG C; The plane adhesive tape of obtained thickness 11.8mm is extruded by forcing machine head mould.
Step 2:
Described plane adhesive tape is placed on Stainless Steel Band and is conveyed into the baking cabinet that temperature is 110 DEG C, setting plane adhesive tape is 10 minutes drying the time run in cabinet, from the plane adhesive tape drying in cabinet deliquescing out, continue to be conveyed under external peripheral surface is provided with the roller of many PM wedge-shaped dies and carry out continuous roll extrusion, sizing, make PM type without fiber core multi-wedge band.
Through detecting, the tensile strength 38.0Mpa of multi-wedge band glue, elongation at break reaches 285%, and obtained have good flexibility without fiber core multi-wedge band, wear resistance is 2 times of urethane multi-wedge band.
In following examples, stopping composition used has carried out following coupling agent activation treatment:
Get 2% aluminate coupling agent of stopping composition total mass, carry out dilution aluminate coupling agent with dehydrated alcohol 12: 1 (volume ratio).The stopping composition weighed up is put into homogenizer stir, add aluminate coupling agent/dehydrated alcohol mixing solutions while stirring, stirring is continued 5 minutes after solution is all poured into, discharge stopping composition, put into dry 5 hours of the baking oven of design temperature 80 DEG C again, after taking out, porphyrize is placed in encloses container for subsequent use.
Embodiment 3: produce PH type without fiber core multi-wedge band
Step 1:
A, get 100 portions of ultrahigh molecular weight polyethylene(UHMWPE)s and 2 parts, lubricant polyethylene wax, Zinic stearas 3 parts and drop into high speed mixer high speed and be stirred to 40 DEG C, allow lubricant fully be adsorbed on ultrahigh molecular weight polyethylene powder surface; Add by 25 parts, silicon carbide, high-pressure polyethylene 30 parts, the nanomete talc powder 10 parts of KH550 coupling agent activation treatment again, high-speed stirring after 3 minutes discharging for subsequent use.
The temperature of b, single screw extrusion machine is followed successively by 125 DEG C from transportation section to head die, 160 DEG C, 265 DEG C, 260 DEG C, 195 DEG C, 200 DEG C, 200 DEG C, 205 DEG C, 200 DEG C; The plane adhesive tape of obtained thickness 2.4mm is extruded by forcing machine head mould.
Step 2:
Described plane adhesive tape is placed on Stainless Steel Band and is conveyed into the baking cabinet that temperature is 110 DEG C, setting plane adhesive tape is 20 minutes drying the time run in cabinet, from the plane adhesive tape drying in cabinet deliquescing out, continue to be conveyed under external peripheral surface is provided with the roller of many PH wedge-shaped dies and carry out continuous roll extrusion, sizing, make PH type without fiber core multi-wedge band.
Through detecting, the tensile strength of the ultra-high molecular weight polyethylene composite material that the present invention prepares is 39.0Mpa, and elongation at break reaches 290%, and obtained have good flexibility without fiber core multi-wedge band, wear resistance is 2 times of urethane multi-wedge band.
Embodiment 4: produce PK type without fiber core multi-wedge band
Step 1:
A, get 100 portions of ultrahigh molecular weight polyethylene(UHMWPE)s and 4 parts, lubricant paraffin, barium stearate 2 parts and drop into high speed mixer high speed and be stirred to 60 DEG C, allow lubricant fully be adsorbed on ultrahigh molecular weight polyethylene powder surface; Add by norbide 10 parts, high-pressure polyethylene 15 parts, the nano imvite 8 parts of coupling agent activation treatment again, high-speed stirring after 5 minutes discharging for subsequent use.
The temperature of b, single screw extrusion machine is followed successively by 130 DEG C from transportation section to head die, 165 DEG C, 280 DEG C, 250 DEG C, 210 DEG C, 215 DEG C, 220 DEG C, 225 DEG C, 220 DEG C; The plane adhesive tape of obtained thickness 7.5mm is extruded by forcing machine head mould.
Step 2:
Described plane adhesive tape is placed on Stainless Steel Band and is conveyed into the baking cabinet that temperature is 110 DEG C, setting plane adhesive tape is 10 minutes drying the time run in cabinet, from the plane adhesive tape drying in cabinet deliquescing out, continue to be conveyed under external peripheral surface is provided with the roller of many PK wedge-shaped dies and carry out continuous roll extrusion, sizing, make PK type without fiber core multi-wedge band.
Through detecting, the ultra-high molecular weight polyethylene composite material PK type that the present invention prepares is 36Mpa without the tensile strength of fiber core multi-wedge band glue, elongation at break reaches 260%, and obtained have good flexibility without fiber core multi-wedge band, wear resistance is urethane PK type without 2 times of fiber core multi-wedge band.
Embodiment 5: produce PM type without fiber core multi-wedge band
Step 1:
A, get 100 portions of ultrahigh molecular weight polyethylene(UHMWPE)s and lubricant stearic acid 3 parts, Zinic stearas 2 parts and drop into high speed mixer high speed and be stirred to 50 DEG C, allow lubricant fully be adsorbed on ultrahigh molecular weight polyethylene powder surface; Add by norbide 60 parts, low pressure polyethylene 75 parts, the nanomete talc powder 7 parts of coupling agent activation treatment again, high-speed stirring after 5 minutes discharging for subsequent use.
The temperature of b, single screw extrusion machine is followed successively by 125 DEG C from transportation section to head die, 160 DEG C, 265 DEG C, 260 DEG C, 205 DEG C, 210 DEG C, 210 DEG C, 215 DEG C, 210 DEG C; The plane adhesive tape of obtained thickness 11.8mm is extruded by forcing machine head mould.
Step 2:
Described plane adhesive tape is placed on Stainless Steel Band and is conveyed into the baking cabinet that temperature is 120 DEG C, setting plane adhesive tape is 10 minutes drying the time run in cabinet, from the plane adhesive tape drying in cabinet deliquescing out, continue to be conveyed under external peripheral surface is provided with the roller of many PM wedge-shaped dies and carry out continuous roll extrusion, sizing, make PM type without fiber core multi-wedge band.
Through detecting, the ultra-high molecular weight polyethylene composite material PM type that the present invention prepares is 35.0Mpa without the tensile strength of fiber core multi-wedge band glue, elongation at break reaches 270%, obtained have good flexibility without fiber core multi-wedge band, wear resistance is urethane PM type without 2 times of fiber core multi-wedge band.
In sum, provided by the present invention without fiber core multi-wedge band, by adding nano sized inorganic fillers in ultrahigh molecular weight polyethylene(UHMWPE), lubricant carries out modification, solve described ultrahigh molecular weight polyethylene(UHMWPE) melt viscosity high, add a difficult problem for type difficulty, can be extruded by forcing machine, one-body molded preparation is without fiber core multi-wedge band.The performances such as original high strength, shock-resistant, wear-resistant, resistance to chemical attack are not only possessed through the ultra-high molecular weight polyethylene composite material of modification, also there is good tensile strength, elongation at break and flexural property, and heat-drawn wire brings up to about 100 DEG C, the stability of ultra-high molecular weight polyethylene composite material of the present invention is improved, and use range is more extensive.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (10)
1. without a fiber core multi-wedge band, it is characterized in that, its raw material forms, and according to the mass fraction, comprises following component:
2. according to claim 1ly to it is characterized in that without fiber core multi-wedge band, described ultrahigh molecular weight polyethylene(UHMWPE) to be molecular-weight average be 1,500,000 ~ 8,000,000 polyethylene.
3. according to claim 1ly it is characterized in that without fiber core multi-wedge band, described polyethylene is one or more in high-pressure polyethylene, low pressure polyethylene.
4. according to claim 1ly it is characterized in that without fiber core multi-wedge band, described lubricant is one or more in polyethylene wax, paraffin, stearic acid, calcium stearate, barium stearate, Zinic stearas; Described stopping composition is one or more in glass microballon, ceramic fine bead, aluminum oxide, silicon carbide, norbide; Described nanometer inorganic filler is one or more in nano silicon, nano aluminium oxide, nanomete talc powder, nano-calcium carbonate, nano imvite.
5. according to claim 1ly it is characterized in that without fiber core multi-wedge band, described stopping composition is through coupling agent activation treatment.
6. according to claim 5ly it is characterized in that without fiber core multi-wedge band, the process of described coupling agent activation treatment is the coupling agent of the total mass 0.5-3.5% getting stopping composition, with dehydrated alcohol according to 8-12: 1 volume ratio carry out dilution coupling agent; Limit is stirred stopping composition limit and is added coupling agent/dehydrated alcohol mixing solutions, after solution is all poured into, continue stirred for several minute, then the baking oven putting into design temperature 70 DEG C ~ 110 DEG C is dry, and porphyrize after taking out is for subsequent use;
Described coupling agent is one or more in silane coupling agent, titanate coupling agent, aluminate coupling agent.
7. according to claim 6ly it is characterized in that without fiber core multi-wedge band, described coupling agent is silane coupling agent.
8. the preparation method without fiber core multi-wedge band as described in as arbitrary in claim 1-7, is characterized in that, comprise the following steps:
Obtain ultrahigh molecular weight polyethylene(UHMWPE) and lubricant in proportion, high-speed stirring to 40 ~ 60 DEG C or 8 ~ 15 minutes; Add polyethylene, nanometer inorganic filler and by the stopping composition of coupling agent activation treatment again, high-speed stirring 3 ~ 5 minutes, discharging;
Extruded by forcing machine head mould and generate plane adhesive tape;
By the preheating 5 ~ 30 minutes at the temperature of 90 DEG C ~ 140 DEG C of plane adhesive tape, sizing material deliquescing, is conveyed under surface is provided with the roller of many wedge-shaped dies and carries out roll extrusion, sizing, make without fiber core multi-wedge band;
Wherein, the temperature of forcing machine is followed successively by 125 ± 5 DEG C from transportation section to head die, 160 ± 5 DEG C, 250 ~ 290 DEG C, 230 ~ 265 DEG C, 180 ~ 220 DEG C, 190 ~ 235 DEG C, 195 ~ 240 DEG C, 200 ~ 250 DEG C, 190 ~ 235 DEG C.
9. the preparation method without fiber core multi-wedge band according to claim 7, it is characterized in that, the process of described coupling agent activation treatment is the coupling agent of the total mass 0.5-3.5% getting stopping composition, with dehydrated alcohol according to 8-12: 1 volume ratio carry out dilution coupling agent; Limit is stirred stopping composition limit and is added coupling agent/dehydrated alcohol mixing solutions, after solution is all poured into, continue stirred for several minute, then the baking oven putting into design temperature 70 DEG C ~ 110 DEG C is dry, and porphyrize after taking out is for subsequent use;
Described coupling agent is one or more in silane coupling agent, titanate coupling agent, aluminate coupling agent.
10. the preparation method without fiber core multi-wedge band according to claim 9, is characterized in that, described coupling agent is silane coupling agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811490.3A CN104530525A (en) | 2014-12-19 | 2014-12-19 | Fibreless-core multi-wedge belt and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811490.3A CN104530525A (en) | 2014-12-19 | 2014-12-19 | Fibreless-core multi-wedge belt and preparation method thereof |
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| CN104530525A true CN104530525A (en) | 2015-04-22 |
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