CN103059476A - Preparation method of environment-friendly type medical PVC (Polyvinyl Chloride) hard seat joint material - Google Patents
Preparation method of environment-friendly type medical PVC (Polyvinyl Chloride) hard seat joint material Download PDFInfo
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- CN103059476A CN103059476A CN2013100267338A CN201310026733A CN103059476A CN 103059476 A CN103059476 A CN 103059476A CN 2013100267338 A CN2013100267338 A CN 2013100267338A CN 201310026733 A CN201310026733 A CN 201310026733A CN 103059476 A CN103059476 A CN 103059476A
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Abstract
The invention discloses a preparation method of an environment-friendly type medical PVC (Polyvinyl Chloride) hard seat joint material, and relates to the technical field of production of modified PVC particles. The preparation method comprises the following steps of: putting PVCSG7 resin powder, an environment-friendly plasticizer, stearic acid, a modifier, an anti-impact agent and a stabilizer into a mixing machine to be uniformly mixed, and subsequently extruding by using a double-screw-rod extruder to make granules, wherein the feeding mass ratio of the PVCSG7 resin powder, the environment-friendly plasticizer, the stearic acid, the modifier, the anti-impact agent to the stabilizer is respectively (50-95):(0.5-12):(0.1-8):(0.5-5):(0.5-4):(1-10). By adding the modifier, the glass transition temperature of the PVCSG7 resin can be lowered, and the plasticization efficiency of the PVCSG7 resin is improved. The preparation method avoids the harm to the reproductive system as a phthalic acid ester is adopted as the plasticizer; and a product prepared from the material has the characteristics of being safe and not easy to crisp.
Description
Technical field
The present invention relates to the production technical field of modified PVC particle.
Background technology
Along with the day by day wide application in medical equipment, utensil of PVC plastics, the medical hard seat joint of various PVC material also obtains more and more general application.But because institute's plasticizer-containing amount is lower in the PVC hard material, its plastifying state is relatively poor, and goods rise crisp, and shock resistance is difficult to meet the demands.And traditional PVC softening agent is phthalate, potential the harm to reproductive system, and its use more and more is restricted.
Summary of the invention
The object of the invention is to propose a kind of safe, preparation method of being difficult for crisp medical PVC hard seat joint material.
The inventive method is: after placing mixer to mix PVC SG7 resin-oatmeal, environment-friendly plasticizer, stearic acid, properties-correcting agent, impact modifier and stablizer, by the twin screw extruder extruding pelletization; The mass ratio that feeds intake of described PVC SG7 resin-oatmeal, environment-friendly plasticizer, stearic acid, properties-correcting agent, impact modifier and stablizer is respectively 50～95 ︰, 0.5～12 ︰, 0.1～8 ︰, 0.5～5 ︰, 0.5～4 ︰ 1～10.
The properties-correcting agent that the present invention adds can reduce the second-order transition temperature of PVC SG7 resin, increases its plasticizing efficiency.The impact modifier that the present invention adds can improve the flowability of PVC SG7 resin, eliminates its inner crazing and causes stress, sponges the striking energy of importing in the material bodies, improves shock resistance.Therefore, avoided the hazardness to reproductive system that adopts phthalate to bring as softening agent, the product that the present invention makes has safety, has been difficult for crisp characteristics.
Preferably, the mass ratio that feeds intake of PVC SG7 resin-oatmeal of the present invention, environment-friendly plasticizer, stearic acid, properties-correcting agent, impact modifier and stablizer is respectively 70～90 ︰, 2～11 ︰, 0.3～3 ︰, 0.5～3 ︰, 0.5～3 ︰ 1～5.
Environment-friendly plasticizer of the present invention be selected from epoxy ester series softening agent, citric acid ester plasticizer, dibasic alcohol benzoates plasticizer, hexanodioic acid ester plasticizer or the polyester adipate family macromolecule softening agent at least any one, all be non-adjacent benzene environment-friendly type softening agent, to reach more environmental protection, the cleaning purpose more friendly with environment more.
Preferred environment-friendly plasticizer be in epoxy ester series softening agent or the citric acid ester plasticizer at least any one.
Properties-correcting agent of the present invention is the methymethacrylate multipolymer, or in the a-Methylstyrene Low-Polymer at least any one.
Preferred properties-correcting agent is the methymethacrylate multipolymer.
Because the present invention has used the methymethacrylate multipolymer as properties-correcting agent, this material can obviously reduce the second-order transition temperature of polyvinyl chloride resin when a small amount of the interpolation, accelerate the plasticizing process of PVC resin, improve the rheological property of thermoplastic melt, improve melt mechanical property under the thermo-elasticity state, improve the comprehensive functions such as visual appearance of goods.Although the addition of processing aid is few, be fairly obvious to improving the PVC processing characteristics.
Impact modifier of the present invention be selected from oxidized polyethlene wax (PA), methymethacrylate/Butadiene/Styrene terpolymer (MBS) or propylene wax-divinyl-third ethylene copolymer (ABS) at least any one.
Preferred impact modifier is methymethacrylate/Butadiene/Styrene terpolymer (MBS).
Methymethacrylate/Butadiene/Styrene terpolymer (MBS) is the nuclear-shell copolymer that MMA grafting styrene-butadiene latex forms by the drying of saltouing, can improve its shock strength and over-all properties with its modified PVC, close with the PVC refractive index because of it, the PVC that makes modification has the preferably transparency, therefore the present invention is applied to the production of medical hard seat joint material, to improve its transparency.
Stablizer of the present invention is selected from Zinic stearas and calcium stearate one package stabilizer, or thiol methyl tin, or the mercaptan tin octylate, or in the phosphorous acid esters at least any one.
Preferred stablizer is Zinic stearas and calcium stearate one package stabilizer, or in the mercaptan tin octylate at least any one.
Embodiment
One, embodiment 1:
1, produces medical PVC hard joint material PVC1: take by weighing PVC SG7 resin-oatmeal 5.0kg, tributyl acetylcitrate 0.2kg, epoxy soybean oil 0.1kg, stearic acid 0.02kg, methymethacrylate multipolymer (ACR) 0.06kg, methymethacrylate/Butadiene/Styrene terpolymer (MBS) 0.12kg, Zinic stearas/calcium stearate one package stabilizer (SM-501) 0.08kg, mercaptan tin octylate 0.01kg, each material poured in the batch mixing bucket stir, then add extruding pelletization in the twin screw, obtain medical PVC hard joint material PVC1.
2, the performance test results:
Two, embodiment 2:
1, produce medical PVC hard joint material PVC2: take by weighing PVC SG7 resin-oatmeal 5.0kg, hexanaphthene 1,2-dioctyl phthalate diisononyl esters 0.4kg, epoxy soybean oil 0.2kg, stearic acid 0.02kg, methymethacrylate multipolymer (ACR) 0.06kg, methymethacrylate/Butadiene/Styrene terpolymer (MBS) 0.12kg, Zinic stearas/calcium stearate one package stabilizer (SM-501) 0.08kg, mercaptan tin octylate 0.02kg, order is poured in the batch mixing bucket and is stirred, and then adds extruding pelletization in the twin screw, obtains medical PVC hard joint material PVC2.
2, the performance test results:
Claims (10)
1. the preparation method of an environment-friendly type medical PVC hard seat joint material, place mixer to mix PVC SG7 resin-oatmeal, environment-friendly plasticizer, stearic acid, properties-correcting agent, impact modifier and the stablizer after, by the twin screw extruder extruding pelletization; It is characterized in that: the mass ratio that feeds intake of described PVC SG7 resin-oatmeal, environment-friendly plasticizer, stearic acid, properties-correcting agent, impact modifier and stablizer is respectively 50～95 ︰, 0.5～12 ︰, 0.1～8 ︰, 0.5～5 ︰, 0.5～4 ︰ 1～10.
2. described preparation method according to claim 1, it is characterized in that: the mass ratio that feeds intake of described PVC SG7 resin-oatmeal, environment-friendly plasticizer, stearic acid, properties-correcting agent, impact modifier and stablizer is respectively 70～90 ︰, 2～11 ︰, 0.3～3 ︰, 0.5～3 ︰, 0.5～3 ︰ 1～5.
3. described preparation method according to claim 1 and 2 is characterized in that: described environment-friendly plasticizer be in epoxy ester series softening agent, citric acid ester plasticizer, dibasic alcohol benzoates plasticizer, hexanodioic acid ester plasticizer or the polyester adipate family macromolecule softening agent at least any one.
4. described preparation method according to claim 3 is characterized in that: described environment-friendly plasticizer be in epoxy ester series softening agent or the citric acid ester plasticizer at least any one.
5. described preparation method according to claim 1 and 2, it is characterized in that: described properties-correcting agent is the methymethacrylate multipolymer, or in the a-Methylstyrene Low-Polymer at least any one.
6. described preparation method according to claim 5, it is characterized in that: described properties-correcting agent is the methymethacrylate multipolymer.
7. described preparation method according to claim 1 and 2, it is characterized in that: described impact modifier is oxidized polyethlene wax, or methymethacrylate/Butadiene/Styrene terpolymer, or in propylene wax/divinyl/third ethylene copolymer at least any one.
8. described preparation method according to claim 7, it is characterized in that: described impact modifier is methymethacrylate/Butadiene/Styrene terpolymer.
9. described preparation method according to claim 1 and 2, it is characterized in that: described stablizer is Zinic stearas and calcium stearate one package stabilizer, or thiol methyl tin, or the mercaptan tin octylate, or in the phosphorous acid esters at least any one.
10. described preparation method according to claim 9, it is characterized in that: described stablizer is Zinic stearas and calcium stearate one package stabilizer, or in the mercaptan tin octylate at least any one.
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| CN2013100267338A CN103059476A (en) | 2013-01-24 | 2013-01-24 | Preparation method of environment-friendly type medical PVC (Polyvinyl Chloride) hard seat joint material |
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| CN2013100267338A CN103059476A (en) | 2013-01-24 | 2013-01-24 | Preparation method of environment-friendly type medical PVC (Polyvinyl Chloride) hard seat joint material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103467878A (en) * | 2013-08-12 | 2013-12-25 | 北京伏尔特技术有限公司 | Medical pipe |
| 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 |
| CN110982198A (en) * | 2019-12-25 | 2020-04-10 | 上海新上化高分子材料有限公司 | Ultrahigh-transparency high-thermal-stability hard medical injection-molded PVC plastic |
Citations (1)
| 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 |
-
2013
- 2013-01-24 CN CN2013100267338A patent/CN103059476A/en active Pending
Patent Citations (1)
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103467878A (en) * | 2013-08-12 | 2013-12-25 | 北京伏尔特技术有限公司 | Medical pipe |
| 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 |
| CN110982198A (en) * | 2019-12-25 | 2020-04-10 | 上海新上化高分子材料有限公司 | Ultrahigh-transparency high-thermal-stability hard medical injection-molded PVC plastic |
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Application publication date: 20130424 |