CN101698743B - Low-temperature thermoplastic material and preparation method thereof - Google Patents
Low-temperature thermoplastic material and preparation method thereof Download PDFInfo
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- CN101698743B CN101698743B CN2009101922829A CN200910192282A CN101698743B CN 101698743 B CN101698743 B CN 101698743B CN 2009101922829 A CN2009101922829 A CN 2009101922829A CN 200910192282 A CN200910192282 A CN 200910192282A CN 101698743 B CN101698743 B CN 101698743B
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Abstract
The invention discloses a low-temperature thermoplastic material, comprising the following ingredients by weight parts: 90-100 parts of polyurethane with melting point of 50-70 DEG C, 0-90 parts of polycaprolactone and 0.1-6 parts of crosslinkers; the low-temperature thermoplastic material manufactured by the invention has small convergent force, better comfort, uniform extension and good fixing strength after being formed compared with existing polycaprolactone type low-temperature thermoplastic material, therefore, the low-temperature thermoplastic material is suitable for hospitals and other radiotherapy institutions and is matched with three-dimensional conformal radiotherapy instruments for treating tumor operation.
Description
Technical field
The present invention relates to a kind of low-temp thermoplastic material, especially medical low-temp thermoplastic material and preparation technology.
Background technology
Usually said low-temp thermoplastic material is main composition by polycaprolactone and adds additive and process that its characteristics are: (about 65 ℃) can soften and be moulded random shape at a lower temperature, and at normal temperatures, it has the physical properties of polyolefins again.Accurate location when their these characteristics can be used for tumour patient radiotherapy, or be that the patient that need carry out rehabilitation measures body making rehabilitation brace.Low-temp thermoplastic material has been widely used in the radiotherapy location at present, orthopedic brace and rehabilitation brace etc. are fixed, made to Orthopeadic Surgery.
Though it is convenient that existing polycaprolactone type low-temperature heat molding product is shaped; But convergent force is bigger; A kind of polycaprolactone that is used for medical aspect+carbon fibers thing that can reduce convergent force is arranged at present,, but seem more stiff though the convergent force of this product decreases; Tensile the time, the patient can feel under the weather on one's body tumour patient.
Summary of the invention
In order to overcome the deficiency of prior art, the present invention provides the low-temp thermoplastic material that a kind of convergent force is low, stretching is comfortable.
Another object of the present invention is that a kind of method of producing above-mentioned low-temp thermoplastic material will be provided.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of low-temp thermoplastic material, its weight are formed umber and be: fusing point is 50-70 ℃ a urethane: 90-10 part, polycaprolactone: 0-90 part, crosslinking coagent: 0.1～6 part.
The making method of above-mentioned low-temp thermoplastic material, its step is following:
1): take by weighing raw material according to weight proportion;
2): with various raw materials mix and stir;
3): mixture heating up is carried out sheet forming after molten state;
4): resulting sheet is punched according to demand, carry out irradiation then, irradiation dose is 3～30Kgy.
The invention has the beneficial effects as follows: the low-temp thermoplastic material of making through the present invention; Through experimental verification; Compare with existing polycaprolactone type low-temperature heat molding product; Convergent force behind this material forming is littler, comfortableness is better, stretch more evenly, constant intensity is better, therefore more is applicable to hospital or other radiotherapy centers, with the three dimensional conformal radiation therapy instrument in the supporting use of tumor operation.
Embodiment
A kind of low-temp thermoplastic material, its weight are formed umber and be: fusing point is 50-70 ℃ a urethane: 90-10 part, polycaprolactone: 0-90 part, crosslinking coagent: 0.1～6 part.Preferred weight ratio is: fusing point is 50-65 ℃ a urethane: 75-50 part, polycaprolactone: 25-50 part, crosslinking coagent: 0.3～2 part.
The crosslinking coagent that this product uses is Isooctyl acrylate monomer, 1,6 hexanediol diacrylate, neopentylglycol diacrylate, triallyl isocyanurate, Viscoat 295, pentaerythritol triacrylate or the dipentaerythritol acrylate etc. of simple function group, bifunctional or more function group.
Make the making method of above-mentioned low-temp thermoplastic material, the steps include:
1): take by weighing raw material according to weight proportion;
2): with various raw materials mix and stir;
3): mixture heating up is carried out sheet forming after molten state; Heating temperature is 65～160 ℃.
4): resulting sheet is punched according to demand, carry out irradiation then, irradiation dose is 3～30Kgy, and preferred irradiation dose is 5-20Kgy, and described irradiation light is: high-energy electron accelerator, cobalt source, X-ray or UV-light.Be preferably high-energy electron accelerator and cobalt source.
For ease of the present invention is further understood, combine specific embodiment to describe the present invention at present.
Embodiment 1:
Take by weighing fusing point and be 50-70 ℃ 10 kilograms of urethane, 90 kilograms of polycaprolactones, 0.3 kilogram of Isooctyl acrylate monomer; Mix; Use the twin screw extruder granulation, with extruding or be injected into sheet material again, break into the abacus of different size as required then; Use the dosage cross-linking radiation of cobalt source at last, so just can make the low-temperature heat molding product that convergent force is little, stretching is comfortable with 12KGy.
Embodiment 2:
Take by weighing fusing point and be 50-70 ℃ 50 kilograms of urethane, 50 kilograms of polycaprolactones, 0.5 kilogram of Viscoat 295; Mix; Use the twin screw extruder granulation, with extruding or be injected into sheet material again, break into the abacus of different size then as required then; Use the dosage cross-linking radiation of rumbatron at last, so just can make the low-temperature heat molding product that convergent force is little, stretching is comfortable with 8KGy.
Embodiment 3:
Take by weighing fusing point and be 50-70 ℃ 90 kilograms of urethane; 10 kilograms of polycaprolactones, 0.5 kilogram of triallyl isocyanurate mixes; Be extruded into sheet material with forcing machine; Break into the abacus of different size then as required, use the dosage cross-linking radiation of cobalt-60 at last, so just can make the low-temperature heat molding product that convergent force is little, stretching is comfortable with 6KGy.
The low-temp thermoplastic material of making through the present invention; Through experimental verification; Compare with existing polycaprolactone product, the convergent force behind this material forming is littler, comfortableness better, it is more even to stretch, constant intensity is better, therefore more is applicable to hospital or other radiotherapy centers; With the three dimensional conformal radiation therapy instrument in the supporting use of tumor operation, the facial mask at radiotherapy position and phantom are made when for example being used for cancer patient radiotherapy.
Facial mask sheet convergent force test set: the pressure transmitter that will link to each other with computer (special software is housed) is placed on and places gypsum motel lower head; It is facial toward stretched to be placed on the gypsum motel to the diaphragm after the heating again; Stretch the back diaphragm be fixed on the disjunct base of pressure transmitter on, and pick up counting and record.Like this, the convergent force that computer just can record film.Room temperature is 24 ℃ during test, 70 ℃ of heating water temperatures.Convergent force to measure at 24 hours is a standard, and it is thick that we have tested 2.4mm respectively, mesh duty ratio each 5 face diaphragm-operated convergent force that to be 36% polycaprolactone type low-temp thermoplastic material process with material of the present invention, and specifically test data sees the following form:
Visible by last table: the convergent force of material of the present invention has reduced by 38.64% than polycaprolactone type, because convergent force is lower, so the patient can feel comfortably cool.And, because convergent force is little, can make that also the mesh that forms when stretching is more even, constant intensity is just better like this.
Claims (6)
1. low-temp thermoplastic material is characterized in that: weight is formed umber and is: its product for being processed through following step by the raw material of following weight parts:
1): take by weighing raw material according to the following weight proportioning: fusing point is 50-70 ℃ a urethane: 90-10 part; Polycaprolactone: 0-90 part; Crosslinking coagent: 0.1～6 part; Wherein said crosslinking coagent is Isooctyl acrylate monomer, 1,6 hexanediol diacrylate, neopentylglycol diacrylate, triallyl isocyanurate, Viscoat 295, pentaerythritol triacrylate or the dipentaerythritol acrylate of simple function group, bifunctional or more function group;
2): with various raw materials mix and stir;
3): mixture heating up is carried out sheet forming after molten state;
4): resulting sheet is punched according to demand, carry out irradiation then, irradiation dose is 3～30Kgy.
2. a kind of low-temp thermoplastic material according to claim 1 is characterized in that: weight is formed umber and is: fusing point is 50-65 ℃ a urethane: 75-50 part, polycaprolactone: 25-50 part, crosslinking coagent: 0.3～2 part.
3. making method of low-temp thermoplastic material according to claim 1 or claim 2, it is characterized in that: step is following:
1): take by weighing raw material according to weight proportion;
2): with various raw materials mix and stir;
3): mixture heating up is carried out sheet forming after molten state;
4): resulting sheet is punched according to demand, carry out irradiation then, irradiation dose is 3～30Kgy.
4. the making method of a kind of low-temp thermoplastic material according to claim 3, it is characterized in that: the Heating temperature of said step 3) is 65～160 ℃.
5. the making method of a kind of low-temp thermoplastic material according to claim 3, it is characterized in that: said step 4) irradiation light is: high-energy electron accelerator, cobalt source, X-ray or UV-light.
6. the making method of a kind of low-temp thermoplastic material according to claim 3 is characterized in that: the irradiation dose 5-20Kgy of said step 4).
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| CN2009101922829A CN101698743B (en) | 2009-09-11 | 2009-09-11 | Low-temperature thermoplastic material and preparation method thereof |
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| CN2009101922829A CN101698743B (en) | 2009-09-11 | 2009-09-11 | Low-temperature thermoplastic material and preparation method thereof |
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| CN101698743A CN101698743A (en) | 2010-04-28 |
| CN101698743B true CN101698743B (en) | 2012-03-28 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2615054B1 (en) * | 2010-09-09 | 2018-06-06 | Mitsubishi Electric Corporation | Rope for elevator |
| CN102774108B (en) * | 2012-07-26 | 2015-06-10 | 北京上田科技有限公司 | Functional composite memory material and preparation method and application thereof |
| WO2014024847A1 (en) * | 2012-08-06 | 2014-02-13 | 株式会社クラレ | Thermoplastic polyurethane and a composition thereof |
| CN104788923A (en) * | 2015-04-20 | 2015-07-22 | 广州迈得菲明医疗器械有限公司 | Novel low-temperature thermoplastic material and preparation method thereof |
| CN108084676A (en) * | 2016-11-22 | 2018-05-29 | 广州天泓医疗科技有限公司 | A kind of low-temp thermoplastic material |
| CN109337319A (en) * | 2018-10-09 | 2019-02-15 | 南通骏标汽车科技有限公司 | A kind of macromolecule self-healing material for preventing tyres for passenger cars gas leakage and blowing out |
| CN109608842B (en) * | 2018-12-18 | 2022-01-14 | 威高集团有限公司 | Low-temperature thermoplastic sheet and preparation method thereof |
| CN110229499B (en) * | 2019-05-05 | 2022-06-28 | 中广研新材料科技(河源市)有限公司 | All-plastic wire rod and method for manufacturing all-plastic wire rod |
| CN110452511A (en) * | 2019-08-23 | 2019-11-15 | 南京茂宇医疗器械科技有限公司 | A kind of low temperature shape memory high molecule material and preparation method thereof |
| CN112375352B (en) * | 2020-10-12 | 2022-07-26 | 广州科莱瑞迪医疗器材股份有限公司 | Low-temperature thermoplastic material and preparation method thereof |
| CN112480616B (en) * | 2020-11-17 | 2022-08-23 | 广州科莱瑞迪医疗器材股份有限公司 | Melamine salt reinforced low-temperature thermoplastic material and preparation method thereof |
Citations (3)
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|---|---|---|---|---|
| CN1120808A (en) * | 1993-04-16 | 1996-04-17 | 明尼苏达矿产制造公司 | Orthopedic casting materials |
| CN101062977A (en) * | 2006-04-24 | 2007-10-31 | 广州科莱瑞迪医疗器材有限公司 | Low-temperature thermoplastic material and preparation technique thereof |
| CN101229690A (en) * | 2007-01-22 | 2008-07-30 | 广州科莱瑞迪医疗器材有限公司 | Method of processing low-temperature thermoplastic material |
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2009
- 2009-09-11 CN CN2009101922829A patent/CN101698743B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1120808A (en) * | 1993-04-16 | 1996-04-17 | 明尼苏达矿产制造公司 | Orthopedic casting materials |
| CN101062977A (en) * | 2006-04-24 | 2007-10-31 | 广州科莱瑞迪医疗器材有限公司 | Low-temperature thermoplastic material and preparation technique thereof |
| CN101229690A (en) * | 2007-01-22 | 2008-07-30 | 广州科莱瑞迪医疗器材有限公司 | Method of processing low-temperature thermoplastic material |
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| CN101698743A (en) | 2010-04-28 |
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Address after: 510730 14 to six Sha Wan, San Jie, Guangdong economic and Technological Development Zone, Guangzhou economic and Technological Development Zone Patentee after: Guangzhou kelairuidi medical equipment Limited by Share Ltd Address before: 510730 Guangdong city of Guangzhou Province Economic and Technological Development Zone Lanyu four street Science Park 1 Building 3 floor Patentee before: Kelairuidi Medical Appliances Co., Ltd., Guangzhou City |
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Denomination of invention: A low temperature thermoplastic material and its preparation method Effective date of registration: 20200924 Granted publication date: 20120328 Pledgee: Bank of China Limited Guangzhou Development Zone Branch Pledgor: KLARITY MEDICAL & EQUIPMENT (GZ) Co.,Ltd. Registration number: Y2020980006409 |
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Date of cancellation: 20220218 Granted publication date: 20120328 Pledgee: Bank of China Limited Guangzhou Development Zone Branch Pledgor: KLARITY MEDICAL & EQUIPMENT (GZ) Co.,Ltd. Registration number: Y2020980006409 |