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Low-temperature resistant medicinal PVC modified material

A technology of modified materials and low temperature resistance, which is applied in the direction of medical containers, medical packaging, and types of packaging items. It can solve the problems of large migration of plasticizers, large precipitation of plasticizers, hardening and brittleness, etc., and achieve precipitation resistance The effect of excellent performance and excellent low temperature resistance

Active Publication Date: 2011-02-23
CHENGDU XINJIN SHIFENG MEDICAL APP ANDINSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its low-temperature toughness is poor, and it quickly becomes hard and brittle when the temperature is lowered, and it is easily brittle when it is impacted; moreover, the plasticizer of soft PVC has a large migration, and it is easy to be brittle during use, which makes the use of soft PVC When the weather is cold, the disposable infusion film bag of the material is prone to cracking when opening the package; at the same time, the plasticizer DOP (dioctyl phthalate) commonly used in soft PVC has a large migration. It enters the blood, liver, kidney and lungs and accumulates, which is harmful to the reproductive system function of the human body and reacts with paclitaxel and other injections
At present, most of the materials replacing DOP on the market are citric acid ester plasticizers, but such plasticizers have large precipitation and are not suitable for the preparation of medical infusion sets

Method used

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  • Low-temperature resistant medicinal PVC modified material
  • Low-temperature resistant medicinal PVC modified material
  • Low-temperature resistant medicinal PVC modified material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh raw materials (kg) according to the following ratio:

[0027] PVC resin powder 100

[0028] Plasticizer: DINCH 20

[0029] TPU 5

[0030] Liquid Calcium Zinc 0.8

[0031] Tris(nonylphenyl)phosphite 0.3

[0032] Secondary Stabilizer: Epoxidized Soybean Oil 1

[0033] Polyethylene wax 0.2

[0034] The preparation method is as follows:

[0035] Mixing: Add PVC resin powder and stabilizer liquid calcium zinc to the high-speed mixer at low speed (441 rpm). When the temperature reaches 65°C, add DINCH, tris(nonylphenyl phosphite), epoxy large Soybean oil, after 1.5 minutes, turn to high speed (operating speed is 877 rpm), when the temperature reaches 90°C, add TPU, when the temperature reaches 110°C, add polyethylene wax, continue to stir until 135°C and put the material into the cold pot until the material temperature to about 30°C;

[0036] Granulation: The material cooled to about 30°C is extruded and pelletized by SJSZ-65 twin-screw extruder, and pelletized ...

Embodiment 2

[0041] Weigh raw materials (kg) according to the following ratio:

[0042] PVC resin powder 100

[0043] Plasticizer: DINCH 43

[0044] TPU 10

[0045] Liquid Calcium Zinc 1

[0046] Tris(nonylphenyl)phosphite 0.3

[0047] Auxiliary Stabilizer: Epoxidized Soybean Oil 5

[0048] Polyethylene wax 0.4

[0049] The preparation method is as described in Example 1.

Embodiment 3

[0051] Weigh raw materials (kg) according to the following ratio:

[0052] PVC resin powder 100

[0053] Plasticizer: DINCH 50

[0054] TPU 15

[0055] Liquid Calcium Zinc 1.5

[0056] Tris(nonylphenyl)phosphite 1.2

[0057] Secondary Stabilizer: Epoxidized Soybean Oil 6

[0058] Polyethylene wax 0.8

[0059] The preparation method is as described in Example 1.

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PUM

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Abstract

The invention discloses a low-temperature resistant non-dioctyl phthalate (DOP) plasticized medicinal PVC (polyvinyl chloride) modified material. The material is characterized by comprising 100 parts of PVC powder, 5 to 15 parts of TPU (thermoplastic polyurethane), 20 to 50 parts of plasticizer which is Diisononyl cyclohexane-1,2-dicarboxylate (DINCH), 0.8 to 1.5 parts of stabilizer, 0.3 to 1.2 parts of antioxidant, 1 to 6 parts of epoxy soybean oil and 0.2 to 0.8 part of lubricating agent. The material has excellent low-temperature resistance, does not contain DOP and is suitable for manufacturing disposable medicinal transfusion film bags; and the plasticizer has excellent precipitation resistance.

Description

technical field [0001] The invention relates to the field of PVC modified materials, in particular to a low-temperature-resistant non-DOP medical PVC modified material. Background technique [0002] Medical PVC is one of the main raw materials for disposable medical devices. It has many advantages: chemical corrosion resistance, low permeability of gas and water vapor, comprehensive mechanical properties, and good product transparency. It is also the most cost-effective general-purpose material. However, its low-temperature toughness is poor, and it quickly becomes hard and brittle when the temperature is lowered, and it is easily brittle when it is impacted; moreover, the plasticizer of soft PVC has a large migration, and it is easy to be brittle during use, which makes the use of soft PVC When the weather is cold, the disposable infusion film bag of the material is prone to cracking when opening the package; at the same time, the plasticizer DOP (dioctyl phthalate) common...

Claims

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Application Information

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IPC IPC(8): A61J1/10C08K5/098C08K5/1515C08L27/06A61M5/14C08K5/526C08L75/06
Inventor 张晓董合军田兴龙车祎凌霞
Owner CHENGDU XINJIN SHIFENG MEDICAL APP ANDINSTR CO LTD
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