CN101475719B - Antistatic special material for caster and preparation thereof - Google Patents
Antistatic special material for caster and preparation thereof Download PDFInfo
- Publication number
- CN101475719B CN101475719B CN2008101639498A CN200810163949A CN101475719B CN 101475719 B CN101475719 B CN 101475719B CN 2008101639498 A CN2008101639498 A CN 2008101639498A CN 200810163949 A CN200810163949 A CN 200810163949A CN 101475719 B CN101475719 B CN 101475719B
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- CN
- China
- Prior art keywords
- antistatic
- caster wheel
- caster
- special material
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- B29C48/04—Particle-shaped
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a special material for an antistatic caster wheel and a method for preparing the antistatic caster wheel. The special material for the antistatic caster wheel is characterized by comprising the following compositions in portion by mass: 100 portions of polypropylene, 22 to 28 portions of a reinforcing agent, 3 to 7 portions of a conductive agent, 0.3 to 0.5 portion of a lubricant, 8 to 14 portions of an elastic body, and 0.3 to 0.7 portion of a hindered phenol antioxidant. The method for preparing the antistatic caster wheel can adopt an extruding method by an extruder or an injection molding method by an injection molding machine. Compared with the prior antistatic caster wheel for production, the elastic body, the reinforcing agent, the conductive agent, the antioxidant, the lubricant and other addition agents are added in the formulation, so the caster wheel has good processing stability, simple processing process, low requirement on equipment, convenient control and steady quality, and has the advantages of shock resistance, wear resistance, certain rigidity and toughness and the like. The material for the antistatic caster wheel is environment-friendly with good combination property.
Description
Technical field
The present invention relates to antistatic medical treatment product, particularly relate to the preparation method of antistatic special material for caster and antistatic caster wheel.
Background technology
The method of producing antistatic material at present both at home and abroad is a lot, but exists following unfavorable factor: production cost height, complex process; The production difficulty is big; Antistatic data instability; Comprehensive mechanical properties such as the hardness of material, toughness, intensity do not reach the requirement of castor materials.
Because above unfavorable factor, antistatic caster wheel only is used for medical field both at home and abroad at present, and uses not general.But the transient voltage that static produced can reach 2000V to 3000V, can cause very major injury to human body.Alkalescence in the blood is raise, and calcium contents reduces in the serum, and the CaE amount increases in the urine; Can cause that also cranial nerve cell membrane current conduction abnormalities influences nervus centralis, thereby cause blood pH and body oxygen characteristic to change, influence the physiological equilibrium of body; Interference blood of human body circulation, immunity and neural system influence each internal organs official's works better, cause the unusual and cardiac extra systole of heart rate.
Along with the continuous increase of the mankind to environmental consciousness, health perception, each field is to the antistatic requirement that oneself is all arranged, especially medical institutions.Research and development stable performance, good combination property and low antistatic material and the antistatic products of production cost are imperative.
Summary of the invention
Technical problem to be solved by this invention is the present situation at prior art, provides that a kind of stable performance, production cost are low, the antistatic special material for caster of good combination property.
Another technical problem to be solved by this invention is the present situation at prior art, provide a kind of preparation technology simple, to the preparation method of the low antistatic caster wheel of production unit requirement.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: this antistatic special material for caster is characterized in that comprising: (following umber removes special instruction and is weight part)
100 parts of polypropylene
22～28 parts of tougheners
3～7 parts of conductive agents
0.3～0.5 part of lubricant
8～14 parts on elastomerics
0.3～0.7 part of Hinered phenols antioxidant.
Wherein, described toughener is selected from glass fibre, carbon fiber or boron fibre, described conductive agent is selected from conductive carbon fibre or metal-powder, described lubricant is an ethylene bis stearamide, described elastomerics is selected from terpolymer EP rubber and/or octene-ethylene elastomer, described oxidation inhibitor is selected from 2,6 di tert butyl 4 methyl phenol, double thioether or pentaerythritol ester.
Adopt above-mentioned antistatic special material for caster to prepare the method for antistatic caster wheel, it is characterized in that: described antistatic special material for caster is mixed 8～12 minutes in high-speed mixer after, send into extruding pelletization in the twin screw extruder then, make the antistatic caster wheel pellet; Then the antistatic caster wheel pellet that makes is extruded with single screw extrusion machine, through port mold forming, cooling and shaping obtain anti-electric castor.
Preferably, the barrel temperature of described twin screw extruder is 180 ℃～210 ℃, and screw speed is 400～1200 rev/mins; The barrel temperature of described single screw extrusion machine is 175 ℃～200 ℃, and screw speed is 400～1200 rev/mins, and die temperature is 175 ℃～190 ℃.
Adopt above-mentioned antistatic special material for caster to prepare the another kind of method of antistatic caster wheel, it is characterized in that: above-mentioned antistatic special material for caster is warmed 90～100 ℃ with the storing baking oven of injection moulding machine, on injection moulding machine, pass through the direct injection moulding antistatic caster wheel of castor mould then.
Preferably, the injection temperature of described injection moulding machine is 180～200 ℃, and injection pressure is 85～65MPa, and injection speed is 45～50 mm/second, and be 85～100 seconds cooling time.
Compared with prior art, because antistatic special material for caster provided by the present invention, stable performance, low, the good combination property of production cost, not only can be applicable on the medical treatment product, and because its cheap cost, it can be applied in every field, the static that produces in the time of preventing human body contact go-cart preferably; Especially be fit to make the inner core of castor.Preparation method's technology of antistatic caster wheel provided by the present invention is simple, low for equipment requirements, uses common forcing machine or injection moulding machine to get final product.
Embodiment
Below in conjunction with embodiment the present invention is further elaborated.Described umber is parts by weight except that specifying.
Embodiment 1
25 parts of glass fibre, 5 parts of conductive carbon fibres, 0.5 part of 2,6 di tert butyl 4 methyl phenol, 0.4 part of ethylene bis stearamide, 4 parts of terpolymer EP rubbers and 6 parts of octene-ethylene elastomers are added in 100 parts of polypropylene, obtain antistatic special material for caster.This antistatic special material for caster mixed in high-speed mixer send into extruding pelletization in the twin screw extruder after 10 minutes, make the antistatic caster wheel pellet; Wherein the twin screw extruder barrel temperature is controlled at 190 ℃, and screw speed is controlled at 650 rev/mins.The antistatic caster wheel pellet is extruded in single screw extrusion machine, and the barrel temperature of control single screw extrusion machine is 190 ℃, and screw speed is 800 rev/mins, and through port mold forming, cooling and shaping obtain anti-electric castor inner core then, and wherein die temperature is 180 ℃.
The each several part performance perameter of testing the antistatic caster wheel in the present embodiment according to a conventional method is as follows:
| Project | Unit | Test value |
| Density | g/cms | 1.13 |
| Tensile strength | Mpa | 75 |
| Elongation at break | ％ | 4 |
| The socle girder notched Izod impact strength | J/m | 190 |
| Modulus in flexure | Mpa | 5500 |
| Heat-drawn wire | ℃ | 160 |
| Surface resistivity | Ω | 1010 |
Compare with present antistatic caster wheel, because the present invention has added auxiliary agents such as elastomerics, toughener, conductive agent, oxidation inhibitor, lubricant in prescription, make that castor has good processing stability, complete processing is simple, equipment requirements is low, control is convenient, steady quality; This antistatic caster wheel is shock-resistant, wear-resisting and have advantages such as certain rigid and toughness, material environment friendly, a good combination property.
Embodiment 2
With 100 parts of polypropylene, 27 parts on carbon fiber, 4 parts in fine copper powder, 0.3 part of double thioether, 0.4 part of ethylene bis stearamide, 10 parts of octene-ethylene elastomers, mix and make antistatic special material for caster.
The above-mentioned antistatic special material for caster for preparing is put into 300g injection moulding machine storing baking oven warm 95 ℃, and on injection moulding machine, load onto the forming mould of castor, with the antistatic polypropylene of warming with one section 198 ℃ of injection temperatures, two sections 193 ℃, three sections 186 ℃, injection pressure 85MPa, speed 47 mm/second injection mouldings, then 90 seconds cooling times, obtain antistatic caster wheel.
After tested, the performance of this antistatic caster wheel and embodiment's 1 is suitable.
Claims (5)
1. an antistatic special material for caster is characterized in that comprising: (following umber removes special instruction and is weight part)
100 parts of polypropylene
22～28 parts of tougheners
3～7 parts of conductive agents
0.3～0.5 part of lubricant
8～14 parts on elastomerics
0.3～0.7 part of Hinered phenols antioxidant;
Above-mentioned each material consumption is weight part;
Wherein, described toughener is selected from glass fibre, carbon fiber or boron fibre, described conductive agent is conductive carbon fibre or metal-powder, described lubricant is an ethylene bis stearamide, described elastomerics is terpolymer EP rubber or octene-ethylene elastomer, described oxidation inhibitor is 2,6 di tert butyl 4 methyl phenol or pentaerythritol ester.
2. the preparation method of an antistatic caster wheel is characterized in that: after antistatic special material for caster mixes 8～12 minutes in high-speed mixer according to claim 1, send into extruding pelletization in the twin screw extruder then, make the antistatic caster wheel pellet; Then the antistatic caster wheel pellet that makes is extruded with single screw extrusion machine, through port mold forming, cooling and shaping obtain antistatic caster wheel.
3. the preparation method of antistatic caster wheel according to claim 2, it is characterized in that: the barrel temperature of described twin screw extruder is 180 ℃～210 ℃, and screw speed is 400～1200 rev/mins; The barrel temperature of described single screw extrusion machine is 175 ℃～200 ℃, and screw speed is 400～1200 rev/mins, and die temperature is 175 ℃～190 ℃.
4. the preparation method of an antistatic caster wheel, it is characterized in that: antistatic special material for caster is warmed 90～100 ℃ with injection moulding machine storing baking oven with the antistatic polypropylene raw material according to claim 1, passes through the direct injection moulding antistatic caster wheel of castor mould then on injection moulding machine.
5. the preparation method of antistatic caster wheel according to claim 4, it is characterized in that: the injection temperature of described injection moulding machine is 180～200 ℃, and injection pressure is 85～65MPa, and injection speed is 45～50 mm/second, and be 85～100 seconds cooling time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101639498A CN101475719B (en) | 2008-12-29 | 2008-12-29 | Antistatic special material for caster and preparation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101639498A CN101475719B (en) | 2008-12-29 | 2008-12-29 | Antistatic special material for caster and preparation thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101475719A CN101475719A (en) | 2009-07-08 |
| CN101475719B true CN101475719B (en) | 2011-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101639498A Expired - Fee Related CN101475719B (en) | 2008-12-29 | 2008-12-29 | Antistatic special material for caster and preparation thereof |
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| CN (1) | CN101475719B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554661A (en) * | 2013-10-25 | 2014-02-05 | 惠州市昌亿新材料有限公司 | High-performance anti-static PP (Propene Polymer) polymer as well as preparation method and application thereof |
| CN108312673A (en) * | 2017-12-13 | 2018-07-24 | 广州原天环保科技有限公司 | A kind of composite foamed plank of antistatic and its production method |
| CN111533998A (en) * | 2020-05-25 | 2020-08-14 | 山东光明园迪儿童家具科技有限公司 | Nano material brake chair wheel and preparation method thereof |
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- 2008-12-29 CN CN2008101639498A patent/CN101475719B/en not_active Expired - Fee Related
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| CN101475719A (en) | 2009-07-08 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ningbo KeSheng Photoelectric Co., Ltd. Assignor: Yang Huake Contract record no.: 2011330000646 Denomination of invention: Antistatic special material for caster and preparation thereof Granted publication date: 20110209 License type: Exclusive License Open date: 20090708 Record date: 20110531 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20171229 |