PVC flexible pipe for low-frequency electromagnetic physiotherapy pad, preparation method of PVC flexible pipe, and electromagnetic physiotherapy pad

Abstract

The invention belongs to the technical field of medicine, and in particular relates to a PVC flexible pipe for a low-frequency electromagnetic physiotherapy pad, a preparation method of the PVC flexible pipe, and the electromagnetic physiotherapy pad. The PVC flexible pipe comprises the following preparation raw materials in parts by weight: 50 to 100 parts of PVC resin, 0.2 to 1 part of a stabilizer, 1 to 3 parts of hexamethylphosphoramide, 1 to 3 parts of epoxidized soybean oil and 20 to 40 parts of a plasticizer, wherein the plasticizer consists of acetyl-tri-n-butyl citrate and O-methyl acetylricinolate according to a weight ratio of 1:(0.01-0.06). The PVC flexible pipe provided by the invention has excellent mechanical property and chemical property, has the advantages of safety, environmental friendliness, migration resistance and processing and forming simplicity, and is suitable for vigorous popularization and application. The invention also provides the low-frequency electromagnetic physiotherapy pad for pain rehabilitation treatment or thoracic vertebra prevention. The low-frequency electromagnetic physiotherapy pad can regulate the system function and the internal organ function of an organism and completely change the pathological environment in the organism to enable the organism to generate super-ego repairing capability.

Description

technical field

[0001] The invention belongs to the technical field of medicine, and in particular relates to a PVC hose used for a low-frequency electromagnetic physiotherapy pad, a preparation method and an electromagnetic physiotherapy pad. Background technique

[0002] At present, PVC plasticizers are mostly cheap phthalate diesters, especially dioctyl phthalate (DOP). In recent years, more and more studies have shown that phthalate plasticizers have The human body can produce toxic effects, even cause cancer, especially have a greater impact on the growth and development of infants and children. The US Food and Drug Administration and the European Union ban it from being used in food packaging plastics, cosmetics and children's toys. Therefore, people are increasingly considering the development of renewable resources as raw materials, green, environmentally friendly plasticizers. For example, Chinese patent application CN104277359A discloses a high-pressure resistant...

Examples

Embodiment 1

[0038] Embodiment 1, a kind of PVC hose for low-frequency electromagnetic physiotherapy pad

[0039] The PVC hose described in Example 1 of the present invention is made from the following preparation raw materials in parts by weight: 80 parts of PVC resin, 1.5 parts of mercaptan methyl tin, 2 parts of hexamethylphosphoric triamide, and 2 parts of epoxy soybean oil and 30 parts of a plasticizer; the plasticizer is composed of acetyl tri-n-butyl citrate and O-acetyl ricinoleic acid methyl ester in a weight ratio of 1:0.02.

[0040] Preparation:

[0041] Mix PVC resin, hexamethylphosphoric triamide, epoxidized soybean oil and plasticizer evenly, stir at 95°C for 20 minutes, add mercaptan methyl after cooling to room temperature, continue stirring for 10 minutes, and then add to the twin-screw extruder Melting, plasticizing, extruding, granulating, that is.

Embodiment 2

[0042] Embodiment 2, a PVC hose for low-frequency electromagnetic physiotherapy pad

[0043] The PVC hose described in Example 2 of the present invention is made from the following preparation raw materials in parts by weight: 50 parts of PVC resin, 0.2 part of mercaptan methyl tin, 1 part of hexamethylphosphoric triamide, and 1 part of epoxy soybean oil , 20 parts of a plasticizer and 0.3 part of nanocrystalline cellulose; the plasticizer is composed of acetyl tri-n-butyl citrate and O-acetyl ricinoleic acid methyl ester in a weight ratio of 1:0.01.

[0044] Preparation method: Mix PVC resin, hexamethylphosphoric triamide, epoxidized soybean oil and plasticizer evenly, stir at 95°C for 20 minutes, cool to room temperature, add mercaptan methyl and nanocrystalline cellulose, and continue stirring for 10 minutes Then add it to a twin-screw extruder to melt, plasticize, extrude, and granulate.

Embodiment 3

[0045] Embodiment 3, a PVC hose for low-frequency electromagnetic physiotherapy pad

[0046] The PVC hose described in Example 3 of the present invention is made of the following raw materials in parts by weight: 100 parts of PVC resin, 1 part of mercaptan methyl tin, 3 parts of hexamethylphosphoric triamide, and 3 parts of epoxidized soybean oil and 40 parts of a plasticizer; the plasticizer consists of acetyl tri-n-butyl citrate and O-acetyl ricinoleic acid methyl ester in a weight ratio of 1:0.06.

[0047] The preparation method is as in Example 1.

technical field

[0001] The invention belongs to the technical field of medicine, and in particular relates to a PVC hose used for a low-frequency electromagnetic physiotherapy pad, a preparation method and an electromagnetic physiotherapy pad. Background technique

[0002] At present, PVC plasticizers are mostly cheap phthalate diesters, especially dioctyl phthalate (DOP). In recent years, more and more studies have shown that phthalate plasticizers have The human body can produce toxic effects, even cause cancer, especially have a greater impact on the growth and development of infants and children. The US Food and Drug Administration and the European Union ban it from being used in food packaging plastics, cosmetics and children's toys. Therefore, people are increasingly considering the development of renewable resources as raw materials, green, environmentally friendly plasticizers. For example, Chinese patent application CN104277359A discloses a high-pressure resistant...

Examples

Embodiment 1

[0038] Embodiment 1, a kind of PVC hose for low-frequency electromagnetic physiotherapy pad

[0039] The PVC hose described in Example 1 of the present invention is made from the following preparation raw materials in parts by weight: 80 parts of PVC resin, 1.5 parts of mercaptan methyl tin, 2 parts of hexamethylphosphoric triamide, and 2 parts of epoxy soybean oil and 30 parts of a plasticizer; the plasticizer is composed of acetyl tri-n-butyl citrate and O-acetyl ricinoleic acid methyl ester in a weight ratio of 1:0.02.

[0040] Preparation:

[0041] Mix PVC resin, hexamethylphosphoric triamide, epoxidized soybean oil and plasticizer evenly, stir at 95°C for 20 minutes, add mercaptan methyl after cooling to room temperature, continue stirring for 10 minutes, and then add to the twin-screw extruder Melting, plasticizing, extruding, granulating, that is.

Embodiment 2

[0042] Embodiment 2, a PVC hose for low-frequency electromagnetic physiotherapy pad

[0043] The PVC hose described in Example 2 of the present invention is made from the following preparation raw materials in parts by weight: 50 parts of PVC resin, 0.2 part of mercaptan methyl tin, 1 part of hexamethylphosphoric triamide, and 1 part of epoxy soybean oil , 20 parts of a plasticizer and 0.3 part of nanocrystalline cellulose; the plasticizer is composed of acetyl tri-n-butyl citrate and O-acetyl ricinoleic acid methyl ester in a weight ratio of 1:0.01.

[0044] Preparation method: Mix PVC resin, hexamethylphosphoric triamide, epoxidized soybean oil and plasticizer evenly, stir at 95°C for 20 minutes, cool to room temperature, add mercaptan methyl and nanocrystalline cellulose, and continue stirring for 10 minutes Then add it to a twin-screw extruder to melt, plasticize, extrude, and granulate.

Embodiment 3

[0045] Embodiment 3, a PVC hose for low-frequency electromagnetic physiotherapy pad

[0046] The PVC hose described in Example 3 of the present invention is made of the following raw materials in parts by weight: 100 parts of PVC resin, 1 part of mercaptan methyl tin, 3 parts of hexamethylphosphoric triamide, and 3 parts of epoxidized soybean oil and 40 parts of a plasticizer; the plasticizer consists of acetyl tri-n-butyl citrate and O-acetyl ricinoleic acid methyl ester in a weight ratio of 1:0.06.

[0047] The preparation method is as in Example 1.

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