CN102321317B - High-transparent medical PVC pellet and preparation method thereof - Google Patents
High-transparent medical PVC pellet and preparation method thereof Download PDFInfo
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- CN102321317B CN102321317B CN201110246412XA CN201110246412A CN102321317B CN 102321317 B CN102321317 B CN 102321317B CN 201110246412X A CN201110246412X A CN 201110246412XA CN 201110246412 A CN201110246412 A CN 201110246412A CN 102321317 B CN102321317 B CN 102321317B
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- heat stabilizer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- 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
Abstract
The invention relates to a high-transparent medical PVC pellet and a preparation method thereof. The pellet comprises 100 parts by weight of PVC resin, 40-70 parts by weight of plasticizer DOP, 0.3-0.8 parts by weight of high-efficient calcium/zinc heat stabilizers, 1-5 parts by weight of auxiliary heat stabilizers, and 0.1-0.5 parts by weight of high-efficient lubricants; wherein, the PVC resin is suspension-method polyvinyl chloride resin with a polymerization degree of 1300; the high-efficient calcium/zinc heat stabilizer is a composite comprising 30-40% of calcium stearate, 10-20% of zinc octoate, 15-25% of zine stearate, 10-20% of pentaerythritol, and 10-20% of N,N'-bis(phenyl thiourea) on a weight basis; the auxiliary heat stabilizer is epoxy soybean oil; the high-efficient lubricant is R&H P-40. The transparency of a medical PVC pellet can be increased from an original level of 82% to above 87%, and the haze can be decreased from 2.7 to below 1.4.
Description
Technical field
The present invention relates to a kind of modification technology of PVC granular material in medical use, particularly a kind of high transparent PVC granular material in medical use and preparation method thereof.
Background technology
PVC granular material in medical use is to be widely used in one of main raw material of disposable medical instrument at present both at home and abroad.Owing to have characteristics such as safety, inexpensive, high comprehensive performance, except that Application Areass such as traditional transfusion device, infusion bag, all kinds of other aspects are used and have also been obtained increasing popularization.For example: all kinds of breathing apparatuss, anaesthetic mask, trachea cannula, analgesia pump etc.
Existing PVC granular material in medical use formula for a product (according to weight part) is: polyvinyl chloride resin: 100 parts, plasticizer DOP: 40 ~ 70 parts, calcium/zinc heat stabilizer: 2.0 parts, auxiliary heat stabilizer: 1 ~ 5 part and lubricant: 0.5 ~ 0.8 part; Wherein: lubricant is polyethylene wax and stearic acid.
Consideration for security, calcium/zinc heat stabilizer that uses in the existing PVC granular material in medical use production formula and lubricant are because efficient is lower, cause addition bigger, therefore can obviously reduce the transparency of PVC material, thereby influence outward appearance and some high-clarity medical equipment application clinically of medical equipment, can not satisfy the requirement of high-quality medical equipment.
Summary of the invention
The object of the present invention is to provide a kind of high transparent PVC granular material in medical use and preparation method thereof, it is lower owing to efficient mainly to solve the calcium/zinc heat stabilizer and the lubricant that use in the PVC granular material in medical use production formula, cause addition bigger, therefore can obviously reduce the transparency of PVC material, thereby influence the outward appearance of medical equipment and the technical problem of some high-clarity medical equipment application clinically, the transparency that it can make PVC granular material in medical use is from original 82%, bring up to more than 87%, mist degree drops to below 1.4 from 2.7.
For achieving the above object, the present invention realizes like this.
A kind of high transparent PVC granular material in medical use is characterized in that: it is made up of polyvinyl chloride resin 100 weight parts, plasticizer DOP 40 ~ 70 weight parts, efficient calcium/zinc heat stabilizer 0.3 ~ 0.8 weight part, auxiliary heat stabilizer 1 ~ 5 weight part and highly-efficient lubricant 0.1 ~ 0.5 weight part; Wherein: described polyvinyl chloride resin is suspension pvc resin, and the polymerization degree is 1300; Described efficient calcium/zinc heat stabilizer is that the two phenylthioureas of N'-are formed mixture by the calcium stearate of weight percent 30 ~ 40%, 10 ~ 20% zinc octoate, 15 ~ 25% Zinic stearas, 10 ~ 20% tetramethylolmethane and 10 ~ 20% N; Described auxiliary heat stabilizer is an epoxy soybean oil; Described highly-efficient lubricant is the P-40 of R﹠H.
A kind of preparation method of high transparent PVC granular material in medical use, it is characterized in that: it adopts aforesaid material component, concrete preparation process is: with calcium stearate, zinc octoate, Zinic stearas, tetramethylolmethane and N, efficient calcium/zinc heat stabilizer that the two 5 kinds of components of phenylthiourea of N'-are formed in proportion is added in the DOP liquid according to the weight ratio of 1:5, heated and stirred to 145 ° C, 60 ~ 80 rev/mins of stirring velocitys, heat-up rate is less than 10 ° of C/ branches, treat that solid constituent is poured circular grinding in the colloid mill into after dissolving fusion substantially in the liquid, the solid particulate diameter is less than 3 μ m in the control colloid, and colloidal grinding finishes the back as efficiently calcium/zinc heat stabilizer is standby; Polyvinyl chloride resin is dropped in the high-speed mixer, rotating speed transfers to 400rpm, add above-mentioned efficient calcium/zinc heat stabilizer then, add auxiliary heat stabilizer after 1 ~ 1.5 minute to 45 ~ 50 ° of C of temperature of charge, the addition that adds softening agent 50%, rotating speed is risen to 1000 ~ 1200rpm, treat that the softening agent that adds residue 50% after the softening agent basic absorption continues high-speed mixing, when mixing temperature reaches 95 ~ 100 ° of C, add and put into cooling mixing machine after lubricant continues to be mixed to 120 ~ 130 ° of C of mixing temperature, rotating speed is 15rpm, treats that temperature of charge drops to 40 ~ 55 ° of C dischargings; Add the double-screw extruding pelletizing machine through the refrigerative material, four sections temperature of machine barrel are respectively: 100 ~ 110 ° of C in I district, and 110 ~ 120 ° of C in II district, 120 ~ 130 ° of C in III district, 120 ~ 130 ° of C in IV district, die head temperature are 125 ~ 130 ° of C, screw speed 50 ~ 80rpm; Material is cooled to 40 ~ 50 ° of C through forcing machine plasticizing granulation, and the packing back is stand-by.
Since calcium/zinc composite heat stabilizer is soft PVC granular material in medical use make in the thermo-stabilizer of extensive employing, but common calcium/zinc composite stabilizer efficient is lower, its addition generally will reach more than the 2.0phr, could satisfy the needs of processing substantially, but after calcium/zinc stabilizer addition surpassed 1.0phr, the transparency of material will obviously descend.The present invention grinds compounding technology by the synergistic effect and the heating of selecting for use and definite suitable stabilizers component and ratio produce, and the thermally-stabilised benefit of calcium/zinc heat stabilizer is significantly improved, and addition drops to 0.5 ~ 0.8phr.Reach the purpose of enhancing the transparency.The present invention has developed efficient calcium zinc stabilizer and lubricant, cooperates polyvinyl chloride resin and other additive, and the transparency that makes PVC granular material in medical use is brought up to more than 87% from original 82%, and mist degree drops to below 1.4 from 2.7.
Embodiment
Come further to introduce the present invention by the following examples.
Embodiment 1
A kind of high transparent PVC granular material in medical use, it is made up of polyvinyl chloride resin 100 weight parts, plasticizer DOP 40 weight parts, efficient calcium/zinc heat stabilizer 0.8 weight part, auxiliary heat stabilizer 5 weight parts and highly-efficient lubricant 0.5 weight part; Wherein: described polyvinyl chloride resin is suspension pvc resin, and the polymerization degree is 1300; Described efficient calcium/zinc heat stabilizer is that the two phenylthioureas of N'-are formed mixture by the calcium stearate of weight percent 30 ~ 40%, 10 ~ 20% zinc octoate, 15 ~ 25% Zinic stearas, 10 ~ 20% tetramethylolmethane and 10 ~ 20% N; Described auxiliary heat stabilizer is an epoxy soybean oil; Described highly-efficient lubricant is the P-40 of R﹠H.
Concrete preparation process is: with calcium stearate, zinc octoate, Zinic stearas, tetramethylolmethane and N, efficient calcium/zinc heat stabilizer that the two 5 kinds of components of phenylthiourea of N'-are formed in proportion is added in the DOP liquid according to the weight ratio of 1:5, heated and stirred to 145 ° C, 60 ~ 80 rev/mins of stirring velocitys, heat-up rate is less than 10 ° of C/ branches, treat that solid constituent is poured circular grinding in the colloid mill into after dissolving fusion substantially in the liquid, the solid particulate diameter is less than 3 μ m in the control colloid, and colloidal grinding finishes the back as efficiently calcium/zinc heat stabilizer is standby; Polyvinyl chloride resin is dropped in the high-speed mixer, rotating speed transfers to 400rpm, add above-mentioned efficient calcium/zinc heat stabilizer then, add auxiliary heat stabilizer after 1 ~ 1.5 minute to 45 ~ 50 ° of C of temperature of charge, the addition that adds softening agent 50%, rotating speed is risen to 1000 ~ 1200rpm, treat that the softening agent that adds residue 50% after the softening agent basic absorption continues high-speed mixing, when mixing temperature reaches 95 ~ 100 ° of C, add and put into cooling mixing machine after lubricant continues to be mixed to 120 ~ 130 ° of C of mixing temperature, rotating speed is 15rpm, treats that temperature of charge drops to 40 ~ 55 ° of C dischargings; Add the double-screw extruding pelletizing machine through the refrigerative material, four sections temperature of machine barrel are respectively: 100 ~ 110 ° of C in I district, and 110 ~ 120 ° of C in II district, 120 ~ 130 ° of C in III district, 120 ~ 130 ° of C in IV district, die head temperature are 125 ~ 130 ° of C, screw speed 50 ~ 80rpm; Material is cooled to 40 ~ 50 ° of C through forcing machine plasticizing granulation, and the packing back is stand-by.
Embodiment 2
A kind of high transparent PVC granular material in medical use, it is made up of polyvinyl chloride resin 100 weight parts, plasticizer DOP 63 weight parts, efficient calcium/zinc heat stabilizer 0.6 weight part, auxiliary heat stabilizer 3 weight parts and highly-efficient lubricant 0.3 weight part; Wherein: described polyvinyl chloride resin is suspension pvc resin, and the polymerization degree is 1300; Described efficient calcium/zinc heat stabilizer is that the two phenylthioureas of N'-are formed mixture by the calcium stearate of weight percent 30 ~ 40%, 10 ~ 20% zinc octoate, 15 ~ 25% Zinic stearas, 10 ~ 20% tetramethylolmethane and 10 ~ 20% N; Described auxiliary heat stabilizer is an epoxy soybean oil; Described highly-efficient lubricant is the P-40 of R﹠H.
The preparation method is identical with embodiment 1.
Embodiment 3
A kind of high transparent PVC granular material in medical use, it is made up of polyvinyl chloride resin 100 weight parts, plasticizer DOP 70 weight parts, efficient calcium/zinc heat stabilizer 0.3 weight part, auxiliary heat stabilizer 1 weight part and highly-efficient lubricant 0.1 weight part; Wherein: described polyvinyl chloride resin is suspension pvc resin, and the polymerization degree is 1300; Described efficient calcium/zinc heat stabilizer is that the two phenylthioureas of N'-are formed mixture by the calcium stearate of weight percent 30 ~ 40%, 10 ~ 20% zinc octoate, 15 ~ 25% Zinic stearas, 10 ~ 20% tetramethylolmethane and 10 ~ 20% N; Described auxiliary heat stabilizer is an epoxy soybean oil; Described highly-efficient lubricant is the P-40 of R﹠H.
The preparation method is identical with embodiment 1.
Performance Detection and comparison that the PVC granular material in medical use that the inventive method is made is correlated with.
The present invention implements to detect by example and meets " blood transfusion (liquid) utensil soft polyvinyl chloride plastic " GB15593-1995 standard-required, and product transparency and mist degree are obtained obvious raising, reach the material service requirements.
Being preferred embodiment of the present invention only in sum, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be technology category of the present invention.
Claims (2)
1. one kind high transparent PVC granular material in medical use is characterized in that: it is made up of polyvinyl chloride resin 100 weight parts, plasticizer DOP 40 ~ 70 weight parts, efficient calcium/zinc heat stabilizer 0.3 ~ 0.8 weight part, auxiliary heat stabilizer 1 ~ 5 weight part and highly-efficient lubricant 0.1 ~ 0.5 weight part; Wherein: described polyvinyl chloride resin is suspension pvc resin, and the polymerization degree is 1300; Described efficient calcium/zinc heat stabilizer is that the two phenylthioureas of N'-are formed mixture by the calcium stearate of weight percent 30 ~ 40%, 10 ~ 20% zinc octoate, 15 ~ 25% Zinic stearas, 10 ~ 20% tetramethylolmethane and 10 ~ 20% N; Described auxiliary heat stabilizer is an epoxy soybean oil; Described highly-efficient lubricant is the P-40 of R﹠H.
2. the preparation method of a high transparent PVC granular material in medical use, it is characterized in that: it adopts material component as claimed in claim 1, concrete preparation process is: with calcium stearate, zinc octoate, Zinic stearas, tetramethylolmethane and N, efficient calcium/zinc heat stabilizer that the two 5 kinds of components of phenylthiourea of N'-are formed in proportion is added in the DOP liquid according to the weight ratio of 1:5, heated and stirred is to 145oC, 60 ~ 80 rev/mins of stirring velocitys, heat-up rate is less than the 10oC/ branch, treat to pour circular grinding in the colloid mill into after solid constituent dissolves substantially in the liquid, the solid particulate diameter is less than 3 μ m in the control colloid, and colloidal grinding finishes the back as efficiently calcium/zinc heat stabilizer is standby; Polyvinyl chloride resin is dropped in the high-speed mixer, rotating speed transfers to 400rpm, add above-mentioned efficient calcium/zinc heat stabilizer then, add auxiliary heat stabilizer after 1 ~ 1.5 minute to temperature of charge 45 ~ 50oC, the addition that adds softening agent 50%, rotating speed is risen to 1000 ~ 1200rpm, treat that the softening agent that adds residue 50% after the softening agent basic absorption continues high-speed mixing, when mixing temperature reaches 95 ~ 100oC, add and put into cooling mixing machine after lubricant continues to be mixed to mixing temperature 120 ~ 130oC, rotating speed is 15rpm, treats that temperature of charge drops to 40 ~ 55oC discharging; Add the double-screw extruding pelletizing machine through the refrigerative material, four sections temperature of machine barrel are respectively: I district 100 ~ 110oC, and II district 110 ~ 120oC, III district 120 ~ 130oC, IV district 120 ~ 130oC, die head temperature are 125 ~ 130oC, screw speed 50 ~ 80rpm; Material is cooled to 40 ~ 50oC through forcing machine plasticizing granulation, and the packing back is stand-by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110246412XA CN102321317B (en) | 2011-08-25 | 2011-08-25 | High-transparent medical PVC pellet and preparation method thereof |
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| CN201110246412XA CN102321317B (en) | 2011-08-25 | 2011-08-25 | High-transparent medical PVC pellet and preparation method thereof |
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| CN102321317A CN102321317A (en) | 2012-01-18 |
| CN102321317B true CN102321317B (en) | 2013-07-31 |
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| CN104231479A (en) * | 2014-09-10 | 2014-12-24 | 苏州新区枫盛塑料制品厂 | Formula of PVC (Polyvinyl Chloride) plastic particles |
| CN105175939B (en) * | 2015-09-09 | 2017-04-26 | 深圳恒方大高分子材料科技有限公司 | High-oxygen-permeability medical PVC (polyvinyl chloride) material and preparation method of high-oxygen-permeability medical PVC material |
| CN105837970B (en) * | 2016-03-31 | 2018-06-15 | 青岛百瑞吉生物工程有限公司 | A kind of preparation method of trachea cannula pvc material |
| CN107573618A (en) * | 2016-05-23 | 2018-01-12 | 张进 | The preparation method of PVC lubricants |
| CN108192241A (en) * | 2016-05-23 | 2018-06-22 | 张进 | A kind of high PVC product and preparation method thereof |
| CN107141646B (en) * | 2017-05-27 | 2019-05-24 | 无锡嘉弘塑料科技有限公司 | A kind of medical injection molding instrument special PVC pellet of ultra-high transparency hard |
| CN107118468A (en) * | 2017-06-20 | 2017-09-01 | 广东雄星新材料有限公司 | A kind of medical PVC infusion bag and preparation method thereof |
| CN108864609A (en) * | 2018-07-21 | 2018-11-23 | 安徽启慧信息科技有限公司 | A kind of preparation method of medical PVC material |
| CN111073175A (en) * | 2019-12-26 | 2020-04-28 | 河南驼人医疗器械研究院有限公司 | Medical PVC paste, preparation method and application thereof |
| CN112294976A (en) * | 2020-10-10 | 2021-02-02 | 东莞市欣辰新材料科技有限公司 | Medical PVC granular material for X-ray development and preparation method thereof |
| CN112280208A (en) * | 2020-10-10 | 2021-01-29 | 东莞市欣辰新材料科技有限公司 | High-transparency high-elasticity soft PVC (polyvinyl chloride) granules and preparation method thereof |
| CN112250969B (en) * | 2020-10-24 | 2022-07-15 | 杭州富阳龙翔塑料制品有限公司 | High-transparency plastic particles for shoemaking and preparation process thereof |
| CN112759855A (en) * | 2020-12-03 | 2021-05-07 | 广东祺龙科技有限公司 | Medical transparent goggles material and preparation method and application thereof |
| CN113912553A (en) * | 2021-11-10 | 2022-01-11 | 山东慧科助剂股份有限公司 | Pentanal diurea pyrimidine, preparation method and application thereof |
| CN113999467A (en) * | 2021-12-01 | 2022-02-01 | 镇江康源新材料科技有限公司 | Formula and preparation process of modified PVC (polyvinyl chloride) granules for blood bags |
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| EP0309996A2 (en) * | 1987-09-28 | 1989-04-05 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Gamma-ray resistant polyvinyl chloride-based resinous material and manufacturing method thereof |
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