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Medical low-temperature resistant low-mobility polyvinyl chloride calendered film material and preparation method thereof

A polyvinyl chloride and calendering film technology, which is applied in the field of low-temperature-resistant low-migration polyvinyl chloride medical calendering film materials and its preparation, can solve the problems of high-risk groups and adverse effects, and achieve surface roughness, high oxygen permeability, Reduce precipitation and make the finished product simple and convenient

Inactive Publication Date: 2013-04-03
上海新上化高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, medical PVC calendered films on the market generally produce plasticizer precipitation in about 9 months, and plasticizer precipitation will have adverse effects on infusion of medicinal liquid or blood transfusion. It is necessary to rely on the filter membrane to intercept the precipitated plasticizer to avoid entering the human body; blood transfusion, as stated in the FDA report, has a huge impact on those high-risk groups

Method used

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  • Medical low-temperature resistant low-mobility polyvinyl chloride calendered film material and preparation method thereof
  • Medical low-temperature resistant low-mobility polyvinyl chloride calendered film material and preparation method thereof
  • Medical low-temperature resistant low-mobility polyvinyl chloride calendered film material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] formula:

[0038]

[0039] Preparation:

[0040] 1. Preparation of premix

[0041]

[0042] Preheat the kneader to 40°C±2°C, add PVC resin, calcium zinc stabilizer and tris(nonylphenyl phosphite) according to the weight ratio, and add plasticizer DEHP and plasticizer when the temperature rises to 70°C±1°C Plastic agent TOTM, after DEHP and TOTM are fully absorbed, add stearic acid at 95°C±2°C, mix, when the temperature reaches 125°C±2°C, discharge the mixture out of the high-speed kneader to obtain a premix.

[0043] 2. Preparation of extrudate

[0044] formula:

[0045] Premix: 80 parts

[0046] Thermoplastic Elastomer SEBS: 20 parts

[0047] The double-stage twin-screw extruder is an extruder with a diameter of 75mm for the upper-stage twin-screw and a diameter of 180mm for the lower-stage single-screw. The length-to-diameter ratio of the extruder is 1:30, and the compression ratio is 1:3.0. The first feeding port of the extruder is at extruder 4D, and the...

Embodiment 2

[0057] formula:

[0058]

[0059] Preparation:

[0060] 1. Preparation of premix

[0061]

[0062] The preferred premixing process of the present invention: preheat the high-speed kneader to 40°C±2°C, add PVC resin, heat stabilizer and antioxidant according to the weight ratio, and add plasticizer DEHP when the temperature rises to 70°C±1°C And plasticizer DOA, after DEHP and DOA are fully absorbed, add lubricant at 95°C±5°C, mix, when the temperature reaches 130°C±1°C, discharge the mixture from the high-speed kneader to obtain a premix.

[0063] 2. Preparation of extrudate

[0064] Preferred formulation:

[0065] Premix: 70 parts

[0066] Thermoplastic elastomer CPE 30 parts

[0067] Thermoplastic elastomer POE 10 parts

[0068] Others are the same as embodiment 1.

[0069] Table 1 shows the performance test of the calendered film prepared by the aforementioned process.

[0070] Table 1 Performance index of medical polyvinyl chloride calendered film

[0071] ...

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Abstract

The invention provides a medical low-temperature resistant low-mobility polyvinyl chloride calendered film material and a preparation method thereof. The calendered film material comprises the following components in parts by weight: 40-90 parts of polyvinyl chloride, 60-10 parts of thermoplastic elastomer, 10-40 parts of plasticizer A, 0-20 parts of plasticizer B, 1-10 parts of heat stabilizer, 0.1-2.5 parts of antioxidant and 0.1-1.5 parts of lubricating agent. The calendered film provided by the invention has the characteristics of softness, firm patterns, good size stability, stable surface roughness and high oxygen permeability, has no particle pollution on the surface, can meet the requirements of storing blood for 42 days and storing the blood at a low temperature of -30 DEG C, provides a medical material capable of being stored for a long time for special conditions or war preparedness, does not need secondary processing, is simple and convenient in manufacture, and is a good substitute of the traditional blow molding film.

Description

technical field [0001] The invention relates to a low-temperature-resistant low-migration polyvinyl chloride medical calendering film material and a preparation method thereof. Background technique [0002] As one of the general-purpose plastics, polyvinyl chloride is widely used in industrial production and daily life because of its low price, good mechanical properties and chemical corrosion resistance, especially PVC-DEHP material, which has strong plasticity and is easy to process. fields, especially the medical device industry. [0003] Although PVC with bis(2-ethyl)hexyl phthalate (DEHP) as a plasticizer has been used in the medical industry for decades, the adverse effects of DEHP on humans are still controversial; especially on animals The test found that exposure to DEHP can cause a series of adverse reactions, the most important finding is that it affects the development of the reproductive system of male animals and tumors in the liver of mice. [0004] FDA's Ce...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K13/02C08K5/12C08K5/11C08K5/1515B29C69/02B29C59/04B29C47/60B29C48/40
CPCB29C48/40
Inventor 钟伟勤徐永卫徐晓辉嵇建忠
Owner 上海新上化高分子材料有限公司
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