CN105623151A - Heat-resistant and shock-resistant medical hard PVC material and preparation method thereof - Google Patents
Heat-resistant and shock-resistant medical hard PVC material and preparation method thereof Download PDFInfo
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- CN105623151A CN105623151A CN201610145934.3A CN201610145934A CN105623151A CN 105623151 A CN105623151 A CN 105623151A CN 201610145934 A CN201610145934 A CN 201610145934A CN 105623151 A CN105623151 A CN 105623151A
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- pvc material
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- rigid pvc
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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
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a heat-resistant and shock-resistant medical hard PVC material. The material is prepared from, by weight, 100 parts of PVC powder, 0-5 parts of plasticizer, 1-3 parts of epoxy soybeans, 2-4 parts of an organic tin stabilizing agent, 1.5-3 parts of an acrylic acid auxiliary agent, 0.3-1.2 parts of external lubricant, 0.8-2 parts of internal lubricant, 5-15 parts of shock-resistant modifier and 0-0.5 part of polyethylene wax. The prepared heat-resistant and shock-resistant medical hard PVC material is excellent in processing fluidity, heat deformation property and shock resistance, the quality problems that medical hard PVC materials on the current market, especially medical injection molding accessories are deformed easily when heated, are prone to cracking in the secondary bending process and the like are solved, meanwhile, the problem that shearing force of the medical hard PVC materials is excessively large in the processing and forming process is further solved, production efficiency is improved, and the service life of production equipment is prolonged. The invention further discloses a preparation method of the heat-resistant and shock-resistant medical hard PVC material. The heat-resistant and shock-resistant medical hard PVC material and the preparation method thereof are simple in process step, high in production efficiency, low in production cost and beneficial to industrial production.
Description
Technical field
The present invention relates to field of medical materials, in particular to a kind of medical rigid PVC material and its preparation method
Background technology
Medical PVC material is the main raw of disposable sterilized blood circuit product, point flexible PVC and hard PVC two kinds. It is many that flexible PVC is used for extruding pipe body, and it is many that hard PVC is used for injection moulded fittings. In PVC material is filled a prescription, softening agent interpolation deal is more high, and material hardness is more low, and plasticization temperature is more low, and the course of processing is easier to processing; On the contrary, it is more few that softening agent adds deal, and hardness is more high, and plasticization temperature is more high, and course of processing mobility is poor, not easily processes. Do not have the accessory poor toughness that the horminess PVC formula of modification is made, easy to crack by power, do not reach service requirements. And the injection moulded fittings in disposable sterilized blood circuit accounts for the proportion of a whole set of product 30%, it is all adopt medical rigid PVC pellet to make, particularly injection seat accessory, coordinates the effects such as built-in rubber cushion sealing, so hardness is the highest in these PVC injection moulded fittings due to needs. When this accessory uses the hard PVC material on market to produce, due to material plasticization temperature height, material flowability is poor, cause processing shearing force excessive, material is wrapped on screw rod and is not fed forward, and this kind of situation can cause shaping efficiency low, and stain easily occurs in accessory, fraction defective height, the problems such as screw rod easy fracture. Simultaneously, this accessory of injection seat carries out second-heating brake forming after needing to place rubber pad, the product using the PVC in existing market firmly to expect to produce easily causes cracking in the placement rubber cushion curved process of heat, even if production process does not find cracking, in Clinical practice process also easy to crack and cause leakage, cause puzzlement and inconvenience for clinical use procedure. And the injection seat manufactured by unmodified PVC material is in shrinkage strain easy after oxirane disinfection, causes injection seat in use easily leakage, does not reach Clinical practice requirement. Owing to hard PVC material plasticizer-containing is few, if formula adjusting is undesirable, the course of processing easily produces manufacturing deficiency.
It is not good enough generally to there is processing fluidity in the medical rigid PVC material selling use in existing market, shearing force problems of too during injection moulded fittings, material bag screw rod is easily caused to skid when producing like this, product easily goes out stain, serious meeting causes screw rod fracture damage, causes the wasting of resources and production efficiency decline. For the medical instrument having the shaping requirement of secondary processing, injection seat on such as current disposable sterilized blood circuit product, after injection seat injection moulding, it is necessary to place after rubber pad and carry out hot bending, and a whole set of product needs through ethylene oxide sterilizing disinfecting steps before putting on market. These PVC fittings acquire have good resistance to temperature distortion and shock proof performance. Only excellent processing fluidity, heat-resistant deforming and shock resistance these three conditions excellent all meet, and material just can reach a good result of use, also just can guarantee the stability of medical product at Clinical practice. And existing market lacks desirable medical rigid PVC material.
Summary of the invention
It is an object of the invention to for above-mentioned the deficiencies in the prior art, it is provided that a kind of heat-proof impact-resistant hits medical rigid PVC material and its preparation method.
The technical solution used in the present invention is: a kind of heat-proof impact-resistant hits medical rigid PVC material, and it comprises following feed composition by weight:
As the further improvement of such scheme, the polymerization degree of described PVC powder is 600��1000.
As the further improvement of such scheme, described softening agent is selected from the wherein one in dioctyl phthalate (DOP), diisononyl phthalate, hexanaphthene 1,2-dioctyl phthalate diisononyl esters.
As the further improvement of such scheme, described acrylic acid or the like auxiliary agent is methyl acrylic ester multipolymer.
As the further improvement of such scheme, described internal lubricant be selected from stearic acid, Tegin 55G one or more. The preferred GH4 of internal lubricant in the present invention.
As the further improvement of such scheme, described external lubricant be selected from metal soap compounded lubricant, oxidized polyethlene wax, polyethylene wax one or more. The preferred G70s of external lubricant in the present invention.
Specifically, internal lubricant can reduce the internal friction of polymkeric substance, increases melting rate and the melt deformability of plastics, reduces melt viscosity and improve plasticizing capacity. And external lubricant can add the oilness increasing frosting man-hour, reduce the bonding strength of plastics and metallic surface so that it is the shearing force being subject to machinery is down to minimum, thus reaches the object of the easiest machine-shaping when not damaging plastics performance. Inside and outside lubricant use proportioning need to reach a balance just can obtain not only being easy to processing and but also there is the good result of the injection-molded item of good physicochemical property, particularly when fill a prescription in plasticizer loading little when, therefore formula in inside and outside lubricant select and proportioning particularly important.
As the further improvement of such scheme, described anti-impact modifier be selected from butadiene acrylonitrile copolymer, MBS multipolymer one or more.
Divinyl composition in butadiene acrylonitrile copolymer (paracril) or MBS multipolymer (MBS) has good shock resistance, and these blends and PVC have good thermodynamic compatibility, add during PVC fills a prescription the shock resistance that can improve PVC material to. The preferred butadiene acrylonitrile copolymer of anti-impact modifier (paracril) in the present invention.
Heat-proof impact-resistant as above hits a preparation method for medical rigid PVC material, and it comprises following processing step:
(1) high mixed: by feed composition proportioning, PVC powder, softening agent, epoxy soybean oil, organotin stabilizer to be added high mixed cylinder, heating, add acrylic acid or the like auxiliary agent, high-speed stirring when temperature is 60 DEG C, heat up, add internal lubricant, when temperature is 90 DEG C, add external lubricant, polyethylene wax and anti-impact modifier, continue when being warming up to 110 DEG C, to complete high mixing;
(2) low mixed: by step (1) gained mixture discharge to cold mixed cylinder, to stir, make temperature be down to less than 60 DEG C;
(3) granulation: step (2) gained mixture is carried out shaping pelletizing with double-screw extruding pelletizing machine, temperature controls within the scope of 120��160 DEG C, finally obtains heat-proof impact-resistant and hits medical rigid PVC material.
The invention has the beneficial effects as follows:
(1) heat-proof impact-resistant obtained prepared by the present invention hits medical rigid PVC material and has excellent processing fluidity, resistance to heat distorsion and shock resistance, solve current medical rigid PVC material on the market, particularly medical injection moulding class accessory is heated the quality problems such as easily distortion, second order buckling be easy to crack, also solve the medical rigid PVC material problem that shearing force is excessive in machine-shaping process, it is to increase production efficiency and extend work-ing life of production unit simultaneously.
(2) preparation method of medical rigid PVC material provided by the invention, its processing step is simple, and production efficiency height, production cost is low, is conducive to suitability for industrialized production.
Embodiment
Below in conjunction with embodiment, the present invention is specifically described, so that personnel's the understanding of the present invention of art. Be necessary at this it is emphasized that; embodiment is just for the present invention will be further described; limiting the scope of the invention can not be interpreted as; art person skilled in the art; the improvement of non-intrinsically safe the present invention made according to foregoing invention content and adjustment, should still belong to protection scope of the present invention.
Following mentioned raw material is unspecified, is commercially available prod.
Embodiment 1
A kind of heat-proof impact-resistant hits medical rigid PVC material, and it comprises following feed composition by weight:
Wherein anti-impact modifier is butadiene acrylonitrile copolymer (paracril) and the mixture of MBS multipolymer (MBS).
This medical rigid PVC material preparation process:
(1) high mixed: by feed composition proportioning by the polymerization degree be 1000 PVC powder, dioctyl phthalate (DOP), epoxy soybean oil, organotin stabilizer add high mixed cylinder, stirring at low speed, heating, add methyl acrylic ester multipolymer, high-speed stirring when temperature is 60 DEG C, add internal lubricant GH4 when being warming up to 85 DEG C, continue to add when being warming up to 90 DEG C external lubricant G70s, polyethylene wax and anti-impact modifier, continue when being warming up to 110 DEG C, to complete high mixing;
(2) low mixed: by step (1) gained mixture discharge to cold mixed cylinder, to stir, make temperature be down to less than 60 DEG C;
(3) granulation: useStep (2) gained mixture is carried out shaping pelletizing by double-screw extruding pelletizing machine, and temperature controls within the scope of 120��160 DEG C. Specifically expecting from down that die head temperature is followed successively by 125 DEG C, 130 DEG C, 140 DEG C, 150 DEG C, 160 DEG C, Oil-temperature control carries out granulation at about 90 DEG C simultaneously, finally obtains heat-proof impact-resistant and hits medical rigid PVC material.
Embodiment 2
A kind of heat-proof impact-resistant hits medical rigid PVC material, and it comprises following feed composition by weight:
Wherein anti-impact modifier is butadiene acrylonitrile copolymer (paracril).
This medical rigid PVC material preparation process is identical with above-described embodiment 1.
Embodiment 3
A kind of heat-proof impact-resistant hits medical rigid PVC material, and it comprises following feed composition by weight:
Wherein anti-impact modifier is butadiene acrylonitrile copolymer (paracril).
This medical rigid PVC material preparation process is identical with above-described embodiment 1.
Embodiment 4: performance test
Respectively the medical rigid PVC material obtained by above-described embodiment 1��3 is carried out injection moulding: with injection seat mould by following temperature range 160 DEG C, 170 DEG C, 180 DEG C, 190 DEG C, 195 DEG C carry out injection moulding, can obtain the injection seat accessory of desired properties.
Measuring mechanical property method:
(1) shock resistance: put into by rubber pad in injection seat, carries out hot bending with special hot bending tooling at 180 DEG C. Product is placed in eye 30cm place, with whether twenty-twenty vision or the curved position of visual observations heat of correcting defects of vision ftracture, uses projector amplification detection outward appearance if desired.
(2) resistance to heat distorsion: for the product of above-mentioned hot bending, observes hot curved position by above-mentioned same detection method and contacts whether position has distortion with rubber pad. It is placed in 28m with uncracked product assembling and be not out of shape after testing3Sterilizers in sterilizing (sterilization), Sterilizers heating and temperature control below 70 DEG C, after sterilizing 20h take out, with twenty-twenty vision or correct defects of vision distance eye 30cm place estimating injection seat accessory entirety whether have distortion.
Measuring mechanical property: the injection seat obtained by Example 1��3 each 500 assemble after carry out above-mentioned performance test, test result is such as table 1:
Table 1. product measuring mechanical property
Chemical property is tested: the injection seat obtained by Example 1��3 carries out according to standard GB/T 15593-1995
Detection, all meets the requirements, and test item and detected result are such as table 2:
The chemistry performance test of table 2. product
Biological property is tested: the injection seat obtained by Example 1��3 detects according to standard GB15593-1995,
All meeting the requirements, test item and detected result are such as table 3:
Table 3. product biological property is tested
In sum, the medical rigid PVC material of the present invention has good processing fluidity, heat-resistant deforming performance and erosion-resisting characteristics concurrently simultaneously, and chemical property and the biological property of the medical moulding prepared by simultaneously all meet national standard.
Claims (10)
1. a heat-proof impact-resistant hits medical rigid PVC material, it is characterised in that: comprise following feed composition by weight:
��
2. a kind of heat-proof impact-resistant according to claim 1 hits medical rigid PVC material, it is characterised in that: the polymerization degree of described PVC powder is 600��1000.
3. a kind of heat-proof impact-resistant according to claim 1 hits medical rigid PVC material, it is characterised in that: described softening agent is selected from the wherein one in dioctyl phthalate (DOP), diisononyl phthalate, hexanaphthene 1,2-dioctyl phthalate diisononyl esters.
4. a kind of heat-proof impact-resistant according to claim 1 hits medical rigid PVC material, it is characterised in that: described acrylic acid or the like auxiliary agent is methyl acrylic ester multipolymer.
5. a kind of heat-proof impact-resistant according to claim 1 hits medical rigid PVC material, it is characterised in that: described internal lubricant be selected from stearic acid, Tegin 55G one or more.
6. a kind of heat-proof impact-resistant according to claim 5 hits medical rigid PVC material, it is characterised in that: the preferred GH4 of described internal lubricant.
7. a kind of heat-proof impact-resistant according to claim 1 hits medical rigid PVC material, it is characterised in that: described external lubricant be selected from metal soap compounded lubricant, oxidized polyethlene wax, polyethylene wax one or more.
8. a kind of heat-proof impact-resistant according to claim 7 hits medical rigid PVC material, it is characterised in that: the preferred G70s of described external lubricant.
9. a kind of heat-proof impact-resistant according to claim 1 hits medical rigid PVC material, it is characterised in that: described anti-impact modifier be selected from butadiene acrylonitrile copolymer, MBS multipolymer one or more.
10. heat-proof impact-resistant as described in an item as arbitrary in claim 1��9 hits the preparation method of medical rigid PVC material, it is characterised in that: comprise following processing step:
(1) high mixed: by feed composition proportioning, PVC powder, softening agent, epoxy soybean oil, organotin stabilizer to be added high mixed cylinder, heating, add acrylic acid or the like auxiliary agent, high-speed stirring when temperature is 60 DEG C, heat up, add internal lubricant, when temperature is 90 DEG C, add external lubricant, polyethylene wax and anti-impact modifier, continue when being warming up to 110 DEG C, to complete high mixing;
(2) low mixed: by step (1) gained mixture discharge to cold mixed cylinder, to stir, make temperature be down to less than 60 DEG C;
(3) granulation: step (2) gained mixture is carried out shaping pelletizing with double-screw extruding pelletizing machine, temperature controls within the scope of 120��160 DEG C, finally obtains heat-proof impact-resistant and hits medical rigid PVC material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610145934.3A CN105623151A (en) | 2016-03-15 | 2016-03-15 | Heat-resistant and shock-resistant medical hard PVC material and preparation method thereof |
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| CN201610145934.3A CN105623151A (en) | 2016-03-15 | 2016-03-15 | Heat-resistant and shock-resistant medical hard PVC material and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107141646A (en) * | 2017-05-27 | 2017-09-08 | 无锡嘉弘塑料科技有限公司 | A kind of medical injection apparatus special PVC pellet of ultra-high transparency hard |
| CN110256780A (en) * | 2019-06-24 | 2019-09-20 | 中国石油化工股份有限公司 | Disposable transfusion device double-vane needle stand PVC PP Pipe Compound and the preparation method and application thereof |
| CN110305419A (en) * | 2019-06-10 | 2019-10-08 | 天长市佳诺医疗器械有限公司 | A kind of cold-resistant urinary bag resin material and preparation method thereof |
| CN114605756A (en) * | 2022-04-14 | 2022-06-10 | 江苏永润包装材料有限公司 | Preparation method of packaging composite film with high elongation |
| CN115093658A (en) * | 2022-07-29 | 2022-09-23 | 浙江数合新材料有限公司 | Medical alloy thermoplastic plate with flame-retardant and anti-corrosion effects |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102850698A (en) * | 2012-09-26 | 2013-01-02 | 高邮市汉升高分子材料有限公司 | Preparation method of environment-friendly medical PVC (polyvinyl chloride) hard seat joint material |
| CN103937119A (en) * | 2014-02-26 | 2014-07-23 | 谢彪 | Medical-grade wide-waveband high-light avoiding performance polyvinyl chloride granula |
| CN104558880A (en) * | 2013-10-09 | 2015-04-29 | 北京化工大学 | Transparent polyvinyl chloride material, and preparation and application thereof |
| CN105295252A (en) * | 2015-11-21 | 2016-02-03 | 段彩兰 | Medical PVC infusion bag |
-
2016
- 2016-03-15 CN CN201610145934.3A patent/CN105623151A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102850698A (en) * | 2012-09-26 | 2013-01-02 | 高邮市汉升高分子材料有限公司 | Preparation method of environment-friendly medical PVC (polyvinyl chloride) hard seat joint material |
| CN104558880A (en) * | 2013-10-09 | 2015-04-29 | 北京化工大学 | Transparent polyvinyl chloride material, and preparation and application thereof |
| CN103937119A (en) * | 2014-02-26 | 2014-07-23 | 谢彪 | Medical-grade wide-waveband high-light avoiding performance polyvinyl chloride granula |
| CN105295252A (en) * | 2015-11-21 | 2016-02-03 | 段彩兰 | Medical PVC infusion bag |
Non-Patent Citations (4)
| Title |
|---|
| 徐应麟: "《电缆电线手册·第2册》", 31 January 2009 * |
| 邓如生: "《共混改性工程塑料》", 30 June 2003 * |
| 郑德等: "《塑料助剂与配方设计技术》", 31 December 2002 * |
| 高冬等: "《实用PVC木塑发泡板技术手册》", 31 January 2015 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107141646A (en) * | 2017-05-27 | 2017-09-08 | 无锡嘉弘塑料科技有限公司 | A kind of medical injection apparatus special PVC pellet of ultra-high transparency hard |
| CN110305419A (en) * | 2019-06-10 | 2019-10-08 | 天长市佳诺医疗器械有限公司 | A kind of cold-resistant urinary bag resin material and preparation method thereof |
| CN110256780A (en) * | 2019-06-24 | 2019-09-20 | 中国石油化工股份有限公司 | Disposable transfusion device double-vane needle stand PVC PP Pipe Compound and the preparation method and application thereof |
| CN110256780B (en) * | 2019-06-24 | 2022-10-14 | 中国石油化工股份有限公司 | PVC (polyvinyl chloride) special material for double-wing needle base of disposable infusion apparatus as well as preparation method and application of PVC special material |
| CN114605756A (en) * | 2022-04-14 | 2022-06-10 | 江苏永润包装材料有限公司 | Preparation method of packaging composite film with high elongation |
| CN114605756B (en) * | 2022-04-14 | 2023-12-22 | 江苏永润包装材料有限公司 | Preparation method of composite film with high elongation for packaging |
| CN115093658A (en) * | 2022-07-29 | 2022-09-23 | 浙江数合新材料有限公司 | Medical alloy thermoplastic plate with flame-retardant and anti-corrosion effects |
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Inventor after: Ge Baoyou Inventor after: Li Sujuan Inventor after: Cai Jigang Inventor before: Li Sujuan Inventor before: Cai Jigang Inventor before: Zhou Wei |
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Application publication date: 20160601 |