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Rubber for medical rubber plug and preparing method of rubber

A rubber stopper and rubber technology, applied in the medical field, can solve the problems of slow vulcanization speed and long extrusion time, and achieve the effect of increasing vulcanization speed, increasing vulcanization speed, improving speed and effect

Inactive Publication Date: 2018-05-08
王维维
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a rubber for medical rubber stoppers, which not only has the advantages of antibacterial, aging resistance and strong water resistance, but also overcomes the problems of long extrusion time and slow vulcanization speed in production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of rubber that medical rubber stopper is used, its composition by weight: 100 parts of natural rubber, 3 parts of hard carbon black, 4 parts of calcium carbonate, 4 parts of barium sulfate, 4 parts of SRF, 5 parts of ammonium dihydrogen phosphate, lithium carbonate 5 parts, 5.5 parts of white petrolatum, 2 parts of stearic acid, 1 part of accelerator DM, 1 part of accelerator NS, 0.2 parts of thiuram polysulfide, 3 parts of anti-aging agent, the mass ratio of anti-aging agent AW and anti-aging agent 264 is 1:1, 2.5 parts of sulfur, 1.4 parts of microcrystalline wax.

[0023] A kind of rubber that medical rubber stopper is used, its preparation method comprises the following steps:

[0024] a. Masticating: After weighing the raw materials according to the proportion, the natural rubber is baked and softened at a temperature of 60°C for 45 minutes. The mastication treatment is carried out at ℃ for 3 minutes. After the plastic is completed, the natural rubber is su...

Embodiment 2

[0031] A kind of rubber that medical rubber stopper is used, and its composition is by weight: 150 parts of natural rubber, 3 parts of hard carbon black, 5 parts of calcium carbonate, 4 parts of barium sulfate, 5 parts of SRF, 5 parts of ammonium dihydrogen phosphate, lithium carbonate 6 parts, 7 parts of white petrolatum, 3 parts of stearic acid, 2 parts of accelerator DM, 1 part of accelerator NS, 0.3 parts of thiuram polysulfide, 4 parts of anti-aging agent, the mass ratio of anti-aging agent AW and anti-aging agent 264 is 1:1.5, 4 parts of sulfur, 1.5 parts of microcrystalline wax.

[0032] A kind of rubber that medical rubber stopper is used, its preparation method comprises the following steps:

[0033] a. Mastication: After weighing the raw materials according to the proportion, the natural rubber is baked and softened at a temperature of 65°C for 40 minutes. The mastication treatment is carried out at ℃ for 2 minutes. After the plastic is completed, the natural rubber...

Embodiment 3

[0040] A kind of rubber that medical rubber stopper is used, its composition by weight: 120 parts of natural rubber, 3.5 parts of hard carbon black, 4.5 parts of calcium carbonate, 4 parts of barium sulfate, SRF4.5 parts, 5.5 parts of ammonium dihydrogen phosphate, 5.5 parts of lithium carbonate, 6 parts of white petrolatum, 2.5 parts of stearic acid, 1.5 parts of accelerator DM, 1.5 parts of accelerator NS, 0.2 parts of thiuram polysulfide, 4 parts of anti-aging agent, anti-aging agent AW and anti-aging agent 264 quality The ratio is 1:1, 3 parts of sulfur, 2 parts of microcrystalline wax.

[0041] A kind of rubber that medical rubber stopper is used, its preparation method comprises the following steps:

[0042] a. Masticating: After weighing the raw materials according to the proportion, the natural rubber is baked and softened at a temperature of 70°C for 50 minutes. The mastication treatment is carried out at ℃ for 3 minutes. After the plastic is completed, the natural r...

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PUM

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Abstract

The invention relates to the technical field of building coating, in particular to rubber for a medical rubber plug and a preparing method of the rubber. The rubber is prepared from, by weight, natural rubber, filler, white vaseline, stearic acid, accelerant, anti-aging agent, sulfur and microcrystalline wax. With accelerant DM, accelerant NS and polysulfide thiuram being accelerant for vulcanizing the rubber, and with the accelerant NS being an overspeed accelerant, the vulcanizing speed can be further increased; barium sulfate and lithium carbonate are added in the filler as raw materials for antibiosis and bacteriostasis, wherein barium sulfate is not dissolved in water and lipid, and the possible influence on the human body is avoided; in the production process, a vacuum die-casting machine presses the mixed rubber out, the speed of air exhaust in the rubber material is increased, the effect of air exhaust in the rubber material is improved, the press-out time is saved, and the quality of the rubber is also improved; by using the anti-aging agent AW, not only can the purpose of aging resisting be achieved, but also the use of the anti-ageing agent can be reduced to a certain extent, and the cost is saved.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a rubber for medical rubber stoppers and a preparation method thereof. Background technique [0002] Medical rubber stoppers are rubber-like elastomer products of a certain shape and size, which are used to seal the mouths of medical bottle-shaped containers such as glass and plastic. Its structure can be roughly divided into three types: conical, T-shaped and flanged; according to the application, it can be divided into antibiotic bottle stoppers, biological drug bottle stoppers, spray drug bottle stoppers, and infusion bottle stoppers. The cork rubber is required to contain no harmful soluble substances such as lead, mercury, arsenic, etc., and it has no effect on the medicine that can be loaded, and the cork itself must not have ejection. Generally, it is made of rubber materials such as NR, IIR and SBR, and is produced by molding. Widely used in pharmaceutical and medical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L91/06C08K13/02C08K5/09C08K3/06C08K3/04C08K3/26C08K3/30C08K3/32C08K5/47C08K5/40B29C35/02
Inventor 王维维
Owner 王维维
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