Preparation method of medical enzyme-resistant plastic

A plastic and medical technology, applied in the field of medical materials, can solve the problems of Staphylococcus aureus antibacterial rate and Bacillus subtilis low sterilization rate and mechanical properties, and achieve the effect of wide application range, simple and easy-to-obtain raw materials, and good enzyme resistance

Inactive Publication Date: 2018-10-16
SUZHOU JONATHAN NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above technical problems, the present application provides a preparation method of medical enzyme-resistant plastics, which solves the technical problems of the existing medical materials such as the antibacterial rate of E.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Weigh 100 parts of PET, 1 part of N-cyclohexyl-2-benzothiazole sulfenamide, 1 part of carbomer amide, 8 parts of silver-loaded nano-zinc oxide, and zinc oxide whiskers according to the ratio of parts by mass 5 parts, 6 parts of silver-loaded zirconium phosphate, 8 parts of dioctyltin maleate, 4 parts of bisphenol A, 9 parts of titanate coupling agent, 0.5 parts of ultraviolet absorber UV-P, 3 parts of sodium bicarbonate, aluminum powder 5 parts, 4 parts of aluminum silicate, 5 parts of trilead tetraoxide, 7 parts of calcium phosphate, 10 parts of antioxidant 2246 antioxidant.

[0023] Step 2: Put PET, calcium phosphate, aluminum silicate, aluminum powder and lead tetraoxide into the reaction kettle and heat to 67-75°C, stir for 35-45min at a stirring speed of 350-450 rpm;

[0024] The third step: Then add the remaining raw materials, raise the temperature to 105-115 ° C, stir for 45-55 minutes, and the stirring speed is 350-450 rpm;

[0025] The fourth step: pu...

Embodiment 2

[0028] Step 1: Weigh 100 parts of PET, 3 parts of N-cyclohexyl-2-benzothiazole sulfenamide, 5 parts of carbomer amide, 12 parts of silver-loaded nano-zinc oxide, and zinc oxide whiskers according to the ratio of parts by mass 15 parts, 10 parts of silver-loaded zirconium phosphate, 10 parts of dioctyltin maleate, 8 parts of bisphenol A, 11 parts of titanate coupling agent, 4.5 parts of ultraviolet absorber UV-P, 7 parts of sodium bicarbonate, aluminum powder 9 parts, 6 parts of aluminum silicate, 7 parts of trilead tetraoxide, 9 parts of calcium phosphate, 12 parts of antioxidant 2246 antioxidant.

[0029] Step 2: Put PET, calcium phosphate, aluminum silicate, aluminum powder and lead tetraoxide into the reaction kettle and heat to 67-75°C, stir for 35-45min at a stirring speed of 350-450 rpm;

[0030] The third step: Then add the remaining raw materials, raise the temperature to 105-115 ° C, stir for 45-55 minutes, and the stirring speed is 350-450 rpm;

[0031] The fourth s...

Embodiment 3

[0034] Step 1: Weigh 100 parts of PET, 2 parts of N-cyclohexyl-2-benzothiazole sulfenamide, 3 parts of carbomer amide, 10 parts of silver-loaded nano-zinc oxide, and zinc oxide whiskers according to the ratio of parts by mass 10 parts, 8 parts of silver-loaded zirconium phosphate, 9 parts of dioctyltin maleate, 6 parts of bisphenol A, 10 parts of titanate coupling agent, 2.5 parts of ultraviolet absorber UV-P, 5 parts of sodium bicarbonate, aluminum powder 7 parts, 5 parts of aluminum silicate, 6 parts of trilead tetraoxide, 8 parts of calcium phosphate, 11 parts of antioxidant 2246 antioxidant.

[0035] Step 2: Put PET, calcium phosphate, aluminum silicate, aluminum powder and lead tetraoxide into the reaction kettle and heat to 67-75°C, stir for 35-45min at a stirring speed of 350-450 rpm;

[0036] The third step: Then add the remaining raw materials, raise the temperature to 105-115 ° C, stir for 45-55 minutes, and the stirring speed is 350-450 rpm;

[0037] The fourth ste...

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Abstract

The invention discloses a preparation method of a medical enzyme-resistant plastic. The medical enzyme-resistant plastic is prepared from the following raw materials of PET (polyethylene terephthalate), N-cyclohexyl-2-benzothiazole sulfonamide, carbomamide, silver-loaded nanometer zinc oxide, zinc oxide whiskers, silver-loaded zirconium phosphate, dioctyltin maleate, bisphenol A, a titanate coupling agent, an ultraviolet absorber UV-P, sodium bicarbonate, aluminum powder, aluminum silicate, lead tetraoxide, calcium phosphate and an antioxidant. The medical enzyme-resistant plastic has the advantage that the tensile strength is 35 to 45MPa in the longitudinal direction, and is 25 to 35MPa in the transverse direction; various indexes can be reached, namely that the resisting rate of escherichia coli is 99.2 to 99.8%, the resisting rate of staphylococcus aureus is 98.8 to 99.2%, the inhibiting rate of pseudomonas aeruginosa is 99.3 to 99.5%, the inhibiting rate of salmonella typhimurium is 94 to 98%, the inhibiting rate of klebsiella pneumoniae is 93 to 95%, the sterilizing rate of bacillus subtilis is 96 to 98%, and the sterilizing rate of sarcina is 93 to 97%; the degradation is avoided, the anti-corrosion property is good, and the dry heat of 160 to 200 DEG C can be resisted.

Description

technical field [0001] The invention relates to the technical field of medical materials, in particular to a method for preparing medical enzyme-resistant plastics. Background technique [0002] PET plastic is the abbreviation of Polyethylene terephthalate in English, referred to as PET or PETP. Chinese means: Polyterephthalic acid plastics, mainly including polyethylene terephthalate PET and polybutylene terephthalate PBT. Polyethylene terephthalate is also commonly known as polyester resin. It is a condensation polymer of terephthalic acid and ethylene glycol, and together with PBT, it is collectively referred to as thermoplastic polyester, or saturated polyester. [0003] According to the test conditions, the weight loss of plastic bottles for oral liquid medicine should not exceed 0.2%; according to the test conditions, the water vapor permeability of plastic bottles for oral administration of solid medicine should not exceed 1000mg / 24h·L. [0004] According to data r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L33/02C08K13/04C08K5/47C08K3/32C08K7/08C08K3/34
CPCC08K2003/325C08L67/02C08L33/02C08K13/04C08K5/47C08K3/32C08K7/08C08K3/34
Inventor 吕少波李卓才李苏杨
Owner SUZHOU JONATHAN NEW MATERIALS TECH
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