Medical environmental protection PVC modified material and preparation method therefor

A modified material and medical technology, which is applied in the field of medical environmentally friendly PVC modified materials and its preparation, can solve the problems that the environmental protection level of PVC materials cannot be used in the medical field, poor thermal stability, poor fluidity, etc., and achieve impact resistance Excellent, excellent processing performance, convenient operation and control

Inactive Publication Date: 2016-03-23
广东祺龙科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyvinyl chloride (PVC) is one of the earliest industrialized and widely used general-purpose thermoplastics. It has light weight, high strength, insulation, flame retardancy, corrosion resistance, It has the advantages of excellent comprehensive performance, low price and wide source of raw materials; but it also has the following disadvantages: 1. Poor toughness, easy to be brittle when impacted, so it cannot be used as a structural material. In addition, the brittleness of polyvinyl chloride is greatly affected by temperature. Large, the lower limit of general PVC products is -15°C, and the lower limit of soft PVC is -30°C; 2. Poor thermal stability, it begins to decompose HCl at 100°C, and decomposes more rapidly when it is higher than 150°C. The melting temperature of PVC is about 210°C; 3. The viscosity of PVC is extremely high and its fluidity is extremely poor, which limits its use to a certain extent.
[0005] The environmental protection level of above-mentioned existing PVC material can't be used in medical field, therefore, it is particularly important to develop a kind of medical environment-friendly PVC material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A kind of medical environment-friendly PVC modified material, described medical environment-friendly PVC modified material comprises the raw material of following weight portion:

[0050] 80 parts of PVC resin

[0051] 60 parts of plasticizer

[0052] 10 parts filler

[0053] 3 parts heat stabilizer

[0054] 0.4 parts of lubricant.

[0055] The PVC resin is a mixture of calcium carbide-based PVC resin and ethylene-based PVC resin in a weight ratio of 2:1.

[0056] The plasticizer is a mixture of diisononyl cyclohexane 1,2-dicarboxylate and epoxidized soybean oil in a weight ratio of 15:1.

[0057] The filler is a mixture of heavy calcium carbonate, light calcium carbonate and kaolin at a weight ratio of 1:0.8:1.

[0058] The heat stabilizer is a mixture of calcium-zinc composite heat stabilizer and hydrotalcite heat stabilizer at a weight ratio of 0.8:1; the calcium-zinc composite heat stabilizer is composed of calcium stearate, calcium ricinoleate, hard A mixture...

Embodiment 2

[0068] A kind of medical environment-friendly PVC modified material, described medical environment-friendly PVC modified material comprises the raw material of following weight portion:

[0069] PVC resin 90 parts

[0070] 65 parts of plasticizer

[0071] Filler 12 parts

[0072] 4 parts heat stabilizer

[0073] 0.5 parts of lubricant.

[0074] The PVC resin is a mixture of calcium carbide-based PVC resin and ethylene-based PVC resin at a weight ratio of 2.5:1.

[0075] The plasticizer is a mixture of diisononyl cyclohexane 1,2-dicarboxylate and epoxidized soybean oil in a weight ratio of 16:1.

[0076] The filler is a mixture of heavy calcium carbonate, light calcium carbonate and kaolin at a weight ratio of 1.2:0.9:1.

[0077] The heat stabilizer is a mixture of calcium-zinc composite heat stabilizer and hydrotalcite heat stabilizer at a weight ratio of 0.9:1; the calcium-zinc composite heat stabilizer is composed of calcium stearate, calcium ricinoleate, hard A mixtur...

Embodiment 3

[0087] A kind of medical environment-friendly PVC modified material, described medical environment-friendly PVC modified material comprises the raw material of following weight portion:

[0088] PVC resin 100 parts

[0089] 70 parts of plasticizer

[0090] 15 parts filler

[0091] Heat stabilizer 5 parts

[0092] 0.6 parts of lubricant.

[0093] The PVC resin is a mixture of calcium carbide-based PVC resin and ethylene-based PVC resin in a weight ratio of 3:1.

[0094] The plasticizer is a mixture of diisononyl cyclohexane 1,2-dicarboxylate and epoxidized soybean oil in a weight ratio of 16.5:1.

[0095] The filler is a mixture of heavy calcium carbonate, light calcium carbonate and kaolin at a weight ratio of 1.5:1:1.

[0096] The heat stabilizer is a mixture of a calcium-zinc composite heat stabilizer and a hydrotalcite heat stabilizer at a weight ratio of 1:1; the calcium-zinc composite heat stabilizer is composed of calcium stearate, calcium ricinoleate, hard A mixtu...

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Abstract

The invention relates to the PVC material technology field, and concretely relates to a medical environmental protection PVC modified material and a preparation method therefor. The modified material comprises the following raw materials, by weight, 80-120 parts of PVC resin, 60-80 parts of plasticizer, 10-20 parts of filler, 3-7 parts of heat stabilizer and 0.4-0.8 part of lubricant. The modified material employs the above raw materials, the weight ratios of the raw materials are controlled strictly, various performances of the prepared modified materials exceed the national standards, and the provided modified material is advantaged by environmental protection, excellent temperature resistance and weather resistance, high intensity, excellent shock resistance, good flame retardation effect, excellent processing property and excellent comprehensive properties.

Description

technical field [0001] The invention relates to the technical field of PVC materials, in particular to an environmentally friendly PVC modified material for medical use and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the earliest industrialized and widely used general-purpose thermoplastics. It has the advantages of light weight, high strength, insulation, flame retardancy, corrosion resistance, excellent comprehensive performance, low price and wide source of raw materials; but also There are the following disadvantages: 1. The toughness is poor, and it is easy to be brittle when impacted, so it cannot be used as a structural material. In addition, the brittleness of polyvinyl chloride is greatly affected by temperature. The lower limit of general PVC products is -15°C. The lower limit of use of PVC is -30°C; 2. Poor thermal stability, it begins to decompose HCl at 100°C, and decomposes more rapidly when it is higher than 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L91/00C08L23/30C08L23/28C08L23/08C08K13/02C08K5/12C08K3/26C08K3/34C08K3/22C08K3/38B29C47/92B29C48/92
CPCC08L27/06B29C48/92B29C2948/92704C08K2201/003C08K2201/014C08L2201/02C08L2201/08C08L2205/035C08L91/00C08L23/30C08L23/286C08L23/0853C08K13/02C08K5/12C08K2003/265C08K3/346C08K3/2279C08K2003/387
Inventor 宁建华
Owner 广东祺龙科技有限公司
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