阅读说明：本技术 一种水基压力蒸气灭菌指示油墨及其制备方法 (Water-based pressure steam sterilization indicating ink and preparation method thereof ) 是由 闫青松 陈广娟 于 2020-12-28 设计创作，主要内容包括：本发明公开了一种水基压力蒸汽灭菌指示油墨,按照质量百分比包括以下成分：15-30％的水性环氧改性丙烯酸树脂、20-35％的纳米银-氧化锌综合条件指示剂、1.5-2.5％的分散剂、1-3％的增稠剂、0.1-0.5％的消泡剂、30-65％的去离子水；所述水性环氧改性丙烯酸树脂中包含质量比重为2-8％环氧化树脂；所述纳米银-氧化锌综合条件指示剂由纳米银、氧化锌、龙胆紫、酞青蓝组成；所述增稠剂为碱缔合型丙烯酸增稠剂。本发明对变色指示剂进行了突破性的改进,完全解决了现有压力蒸汽灭菌指示油墨存在的问题,提高本发明产品的储存稳定性和变色指示稳定性,同时本发明不含苯类、烷烃类溶剂,安全环保。(The invention discloses water-based pressure steam sterilization indicating ink which comprises the following components in percentage by mass: 15-30% of waterborne epoxy modified acrylic resin, 20-35% of nano silver-zinc oxide comprehensive condition indicator, 1.5-2.5% of dispersant, 1-3% of thickener, 0.1-0.5% of defoamer and 30-65% of deionized water; the waterborne epoxy modified acrylic resin contains 2-8% of epoxidized resin by mass proportion; the nano silver-zinc oxide comprehensive condition indicator consists of nano silver, zinc oxide, gentian violet and phthalocyanine blue; the thickening agent is an alkali association type acrylic acid thickening agent. The color-changing indicator is improved in a breakthrough manner, the problems of the existing pressure steam sterilization indicating ink are completely solved, the storage stability and the color-changing indicating stability of the product are improved, and meanwhile, the color-changing indicator does not contain benzene and alkane solvents, and is safe and environment-friendly.)

1. A water-based pressure steam sterilization indicating ink characterized by: the composite material comprises the following components in percentage by mass: 15-30% of waterborne epoxy modified acrylic resin, 20-35% of nano silver-zinc oxide comprehensive condition indicator, 1.5-2.5% of dispersant, 1-3% of thickener, 0.1-0.5% of defoamer and 30-65% of deionized water.

2. The water-based pressure steam sterilization indicating ink of claim 1, wherein: the waterborne epoxy modified acrylic resin contains 2-8% of epoxidized resin by mass proportion.

3. The water-based pressure steam sterilization indicating ink of claim 1, wherein: the nano silver-zinc oxide comprehensive condition indicator consists of nano silver, zinc oxide, gentian violet and phthalocyanine blue.

4. The water-based pressure steam sterilization indicating ink of claim 1, wherein: the thickening agent is an alkali association type acrylic acid thickening agent.

5. A preparation method of water-based pressure steam sterilization indicating ink is characterized by comprising the following steps: the method comprises the following steps: s1, preparing a nano silver-zinc oxide comprehensive condition indicator;

and S2, preparing the water-based pressure steam sterilization indicating ink.

6. The method of claim 5, wherein the ink is prepared by the following steps:

the step S1 includes the steps of:

s1.1, preparing phthalocyanine blue slurry;

s1.2, preparing active nano silver;

s1.3, preparing an indicator.

7. The method of claim 6, wherein the ink is prepared by the following steps:

the method for preparing the phthalocyanine blue slurry in the step S1.1 comprises the following steps:

s1.1.1, mixing and stirring the waterborne epoxy modified acrylic resin and phthalocyanine blue according to the mass ratio of 3:1 to form a mixture;

s1.1.2, grinding the mixture obtained in the step S1.1.1 in a three-roll grinder until the fineness is not more than 20 microns.

8. The method of claim 6, wherein the ink is prepared by the following steps: the method for preparing the active nano silver in the step S1.2 comprises the following steps: under the protection of 80-200ppm polyvinylpyrrolidone, 0.01-0.02N silver nitrate reacts with equivalent sodium borohydride.

9. The method of claim 6, wherein the ink is prepared by the following steps:

the step S1.3 comprises the steps of:

s1.3.1, sequentially adding the nano-silver, the gentian violet and the zinc oxide in a ratio of 3-4:8:1 into the reaction kettle and stirring uniformly;

s1.3.2, reacting for 3h at 80-100 ℃ under the condition of N2 or Ar2, cooling and discharging.

10. The method of claim 5, wherein the ink is prepared by the following steps:

the step S2 includes the steps of:

s2.1, sequentially adding 15-30% of waterborne epoxy modified acrylic resin, 30-65% of deionized water, 1.5-2.5% of dispersant, 20-35% of nano silver-zinc oxide comprehensive condition indicator and 1-3% of thickener into a reaction tank in percentage by mass;

s2.2, stirring for 10-25min at normal temperature, and discharging.

Technical Field

The invention relates to the technical field of indicating ink, in particular to water-based pressure steam sterilization indicating ink and a preparation method thereof.

Background

Pressure Steam Sterilization indicating Ink (Steam-Sterilization Chemical Indicator Ink) is a Chemical indicating Ink for Sterilization applications for rapidly checking the progress and effectiveness of Sterilization and disinfection, and hospitals, medical facilities, and equipment manufacturers are required to perform Sterilization continuously. It is crucial to ensure that the goods are ready and free of safety hazards, and is a key component of medical sterilization packaging. Variable inks are a key component of products used by many organizations worldwide for quick visual inspection to ensure that the equipment is ready for use. The pressure steam sterilization indicating ink which is mature in the market at present is almost solvent-based ink, and the color change is a two-color indicating product which uses metal and sulfur simple substance at high temperature and has a color change mechanism, so that the product is easy to interpret the result of sterilization failure, and uncertain potential safety hazards are brought to medical products.

The water-based ink replaces the solvent with water, can reduce the discharge of VOC to a great extent, saves petroleum resources, reduces the hidden danger of fire and improves the operating environment, and becomes a research hotspot of various inks. Therefore, the development of the water-based pressure steam sterilization indicating ink with high color change stability, adhesive force, water resistance and film forming strength has wide prospect and significance.

Disclosure of Invention

The invention aims to provide water-based pressure steam sterilization indicating ink and a preparation method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a water-based pressure steam sterilization indicating ink characterized by: the composite material comprises the following components in percentage by mass: 15-30% of waterborne epoxy modified acrylic resin, 20-35% of nano silver-zinc oxide comprehensive condition indicator, 1.5-2.5% of dispersant, 1-3% of thickener, 0.1-0.5% of defoamer and 30-65% of deionized water.

Preferably, the waterborne epoxy modified acrylic resin contains 2-8% of epoxidized resin by mass specific gravity.

Preferably, the nano silver-zinc oxide comprehensive condition indicator consists of nano silver, zinc oxide, gentian violet and phthalocyanine blue.

Preferably, the thickener is an alkali-associative acrylic thickener.

A preparation method of water-based pressure steam sterilization indicating ink is characterized by comprising the following steps: the method comprises the following steps: s1, preparing a nano silver-zinc oxide comprehensive condition indicator;

and S2, preparing the water-based pressure steam sterilization indicating ink.

Preferably, the step S1 includes the steps of:

s1.1, preparing phthalocyanine blue slurry;

s1.2, preparing active nano silver;

s1.3, preparing an indicator.

Preferably, the method for preparing phthalocyanine blue slurry in the step S1.1 comprises the following steps:

s1.1.1, mixing and stirring the waterborne epoxy modified acrylic resin and phthalocyanine blue according to the mass ratio of 3:1 to form a mixture;

s1.1.2 grinding the mixture in a three-roll grinder until the fineness is not more than 20 μm.

Preferably, the method for preparing active nano silver in step S1.2 comprises: under the protection of 80-200ppm polyvinylpyrrolidone, 0.01-0.02N silver nitrate reacts with equivalent sodium borohydride.

Preferably, said step S1.3 comprises the steps of:

s1.3.1, sequentially adding the nano-silver, the gentian violet and the zinc oxide into the reaction kettle in a ratio of 3-4:8:1, and uniformly stirring;

s1.3.2, reacting for 3h at 80-100 ℃ under the condition of N2 or Ar2, cooling and discharging.

Preferably, the step S2 includes the steps of:

s2.1, sequentially adding 15-30% of waterborne epoxy modified acrylic resin, 30-65% of deionized water, 1.5-2.5% of dispersant, 20-35% of nano silver-zinc oxide comprehensive condition indicator and 1-3% of thickener into a reaction tank in percentage by mass;

s2.2, stirring for 10-25min at normal temperature, and discharging.

Compared with the prior art, the invention has the beneficial effects that:

1. the color-changing indicator in the formula is improved in a breakthrough manner, the problems of the existing pressure steam sterilization indicating ink are completely solved, and the storage stability and the color-changing indicating stability of the product are improved;

2. the invention does not contain benzene and alkane solvents, is safe and environment-friendly, and can be used for printing indicator cards, adhesive tapes, disinfection bags or outer packages of disposable articles needing sterilization;

3. the invention adopts the nano silver-zinc oxide comprehensive condition indicator, can be used for a pressure steam sterilization pot with lower exhaust (121 ℃) and pre-vacuum (132 ℃), does not need to be separately prepared into two indicators, and has firm attachment, stable color change indication and excellent printing effect.

Drawings

FIG. 1 is a block diagram of the steps of the preparation method of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1, the present invention provides a technical solution: a water-based pressure steam sterilization indicating ink comprises the following components in percentage by mass: 15-30% of waterborne epoxy modified acrylic resin, 20-35% of nano silver-zinc oxide comprehensive condition indicator, 1.5-2.5% of dispersant, 1-3% of thickener, 0.1-0.5% of defoamer and 30-65% of deionized water.

The waterborne epoxy modified acrylic resin contains 2% of epoxidized resin by mass proportion; the nano silver-zinc oxide comprehensive condition indicator consists of nano silver, zinc oxide, gentian violet and phthalocyanine blue; the thickener is alkali association type acrylic acid thickener.

A preparation method of water-based pressure steam sterilization indicating ink comprises the following steps:

s1, preparing a nano silver-zinc oxide comprehensive condition indicator;

and S2, preparing the water-based pressure steam sterilization indicating ink.

Step S1 includes the following steps:

s1.1, preparing phthalocyanine blue slurry;

s1.2, preparing active nano silver;

s1.3, preparing an indicator.

Step S1.1 the method for preparing phthalocyanine blue slurry comprises the following steps:

s1.1.1, mixing and stirring the waterborne epoxy modified acrylic resin and phthalocyanine blue according to the mass ratio of 3:1 to form a mixture;

s1.1.2 grinding the mixture in a three-roll grinder until the fineness is not more than 20 μm.

The method for preparing the active nano silver in the step S1.2 comprises the following steps: under the protection of 80-200ppm polyvinylpyrrolidone, 0.01-0.02N silver nitrate reacts with equivalent sodium borohydride.

Step S1.3 comprises the following steps:

s1.3.1, sequentially adding the nano-silver, the gentian violet and the zinc oxide into the reaction kettle according to the ratio of 3:8:1, and uniformly stirring;

s1.3.2, reacting at 80 ℃ for 3h under the condition of N2 or Ar2, cooling and discharging.

Step S2 includes the following steps:

s2.1, sequentially adding 15% of waterborne epoxy modified acrylic resin, 60% of deionized water, 2% of dispersing agent, 20% of nano silver-zinc oxide comprehensive condition indicator and 3% of thickening agent in a reaction tank;

s2.2, stirring for 10min at normal temperature, and discharging.

The indicating effect of the indicating ink can be increased by increasing the content of the nano silver-zinc oxide comprehensive condition indicator.

Example 2

Referring to fig. 1, the present invention provides a technical solution: a water-based pressure steam sterilization indicating ink comprises the following components in percentage by mass: 30% of waterborne epoxy modified acrylic resin, 35% of nano silver-zinc oxide comprehensive condition indicator, 2.5% of dispersant, 2% of thickener, 0.5% of defoamer and 30% of deionized water.

The waterborne epoxy modified acrylic resin contains 8% of epoxidized resin by mass proportion.

The nano silver-zinc oxide comprehensive condition indicator consists of nano silver, zinc oxide, gentian violet and phthalocyanine blue.

The thickener is alkali association type acrylic acid thickener.

A preparation method of water-based pressure steam sterilization indicating ink comprises the following steps:

s1, preparing a nano silver-zinc oxide comprehensive condition indicator;

and S2, preparing the water-based pressure steam sterilization indicating ink.

Step S1 includes the following steps:

s1.1, preparing phthalocyanine blue slurry;

s1.2, preparing active nano silver;

s1.3, preparing an indicator.

Step S1.1 the method for preparing phthalocyanine blue slurry comprises the following steps:

s1.1.1, mixing and stirring the waterborne epoxy modified acrylic resin and phthalocyanine blue according to the mass ratio of 3:1 to form a mixture;

s1.1.2 grinding the mixture in a three-roll grinder until the fineness is not more than 20 μm.

The method for preparing the active nano silver in the step S1.2 comprises the following steps: under the protection of 80-200ppm polyvinylpyrrolidone, 0.01-0.02N silver nitrate reacts with equivalent sodium borohydride.

Step S1.3 comprises the following steps:

s1.3.1, sequentially adding the nano-silver, the gentian violet and the zinc oxide into the reaction kettle in a ratio of 3-4:8:1, and uniformly stirring;

s1.3.2, reacting for 3h at 80-100 ℃ under the condition of N2 or Ar2, cooling and discharging.

Step S2 includes the following steps:

s2.1, sequentially adding 30 mass percent of waterborne epoxy modified acrylic resin, 30 mass percent of deionized water, 2 mass percent of dispersant, 35 mass percent of nano silver-zinc oxide comprehensive condition indicator and 3 mass percent of thickener into a reaction tank;

s2.2, stirring for 25min at normal temperature, and discharging.

By improving the proportion of the waterborne epoxy modified acrylic resin, the proportion of deionized water is reduced, and the viscosity of the indicating ink is increased, so that the adhesion of the indicating ink is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.