CN111388935B

CN111388935B - Low-temperature-resistant foam decontamination agent and preparation method thereof

Info

Publication number: CN111388935B
Application number: CN202010353223.1A
Authority: CN
Inventors: 邸广林; 梁婷; 裘实; 阎瑞
Original assignee: Insititute Of Nbc Defence
Current assignee: Insititute Of Nbc Defence
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-10-01
Anticipated expiration: 2040-04-29
Also published as: CN111388935A

Abstract

The invention provides a low-temperature-resistant foam decontamination agent which comprises a foaming agent, a foam stabilizer, a catalyst, a solvent, a bactericide and deionized water, wherein the foaming agent is sodium dodecyl sulfate, the foam stabilizer is sodium dodecyl polyoxyethylene ether sulfate, and the foaming agent accounts for 0.2-0.6% by weight, the foam stabilizer accounts for 0.2-0.6% by weight, the catalyst accounts for 0.5-1% by weight, the bactericide accounts for 20-25% by weight, the solvent accounts for 18-24% by weight and the balance of deionized water. The invention also provides a preparation method of the low-temperature-resistant foam decontamination agent. The obtained foam decontaminant can effectively inactivate toxic substances such as mustard gas, bacillus subtilis var niger and the like, has obvious low-temperature sterilization performance, and can still effectively detoxify the mustard gas and the bacillus subtilis var niger in a subzero environment.

Description

Low-temperature-resistant foam decontamination agent and preparation method thereof

The technical field is as follows:

the invention relates to the technical field of sterilization and disinfection, in particular to a low-temperature-resistant foam decontamination agent and a preparation method thereof.

Background art:

aiming at sterilization and disinfection technologies required by the public safety field, related technologies at home and abroad can be divided into three large categories of physical decontamination, chemical decontamination and decontamination, but the related technologies are influenced by factors of complex decontamination places, large decontamination areas and the like in the public safety field, the physical decontamination, such as a water washing method, an adsorption method, a wind erosion method, an ultraviolet radiation sterilization method and the like, has lower membership degree, and the chemical decontamination is still used for sterilization and disinfection in the public safety field at present.

The chemical decontamination technology has the characteristics of obvious and rapid decontamination effect, and along with continuous iteration of the technology, a plurality of chemical decontamination agents can effectively degrade by themselves while ensuring effective purification of pollution of chemical and biological warfare agents, thereby greatly meeting the use requirements in the field of public safety, but the prior art also has obvious technical defects, according to the report of users, the prior decontamination agents frequently have the condition of reduced low-temperature environment disinfection effect in the actual use process, even the decontamination agents are solidified and frozen, because the width of our country is large, the temperature and climate difference of each area is obvious, the low temperature of forty ℃ below zero to fifty ℃ below zero can be generated in the northern frontier region, the prior decontamination agents are difficult to normally use even in the environment below zero, particularly the foam decontamination agents commonly used in the field of public safety, the subzero low temperature environment directly causes the situation that the foam decontamination agent can not be foamed normally and the agent is solidified.

Therefore, there is a need in the art for a low temperature resistant foam sanitizer and a method for making the same.

The invention is provided in view of the above.

The invention content is as follows:

the invention aims to provide a low-temperature-resistant foam decontamination agent capable of being better used and a preparation method thereof, so as to solve at least one technical problem in the prior art.

Specifically, in a first aspect of the present invention, a low temperature resistant foam decontaminant is provided, where the low temperature resistant foam decontaminant includes a foaming agent, a foam stabilizer, a catalyst, a solvent, a bactericide, and deionized water, the foaming agent employs Sodium Dodecyl Sulfate (SDS), the foam stabilizer employs Sodium dodecyl polyoxyethylene ether sulfate (AES), by weight, the foaming agent accounts for 0.2% to 0.6%, the foam stabilizer accounts for 0.2% to 0.6%, the catalyst accounts for 0.5% to 1%, the bactericide accounts for 20% to 25%, the solvent accounts for 18% to 24%, and the balance is deionized water.

By adopting the scheme, the obtained foam decontamination agent can effectively inactivate toxic substances such as mustard gas, bacillus subtilis black variety bacillus and the like, has excellent actual working performance, can have remarkable low-temperature sterilization performance, still can make the mustard gas and the bacillus subtilis black variety bacillus lose toxicity in a subzero environment, even still does not solidify at an extreme low temperature of twenty ℃ below zero, can perform sterilization and inactivation operation, effectively fills the defects in the prior art, meets the use requirements in actual working, and can effectively improve the efficiency and quality of sterilization work.

Preferably, the mass fraction ratio of the foaming agent to the foam stabilizer is 1: 1-2.

By adopting the scheme, the obtained foam decontaminant has excellent low-temperature performance while meeting the foaming capacity and the foam stabilizing capacity.

Preferably, the catalyst adopts one or two of potassium carbonate and sodium bicarbonate.

Further, sodium bicarbonate is used as the catalyst.

By adopting the scheme, the sterilization efficiency and the quality of the finished product foam decontaminant can be effectively improved, particularly the inactivation capacity of the foam decontaminant on mustard gas and black variant spores of bacillus subtilis is improved, the hydrolysis speed of the foam decontaminant and the mustard gas is accelerated, and the decontamination efficiency is improved.

Preferably, the solvent is one or more of ethylene glycol, propylene glycol and propylene carbonate.

Further, the solvent is propylene carbonate.

By adopting the scheme, the foaming capacity and the foam stabilizing capacity of the obtained foam decontaminating agent in a low-temperature environment can be effectively improved.

Preferably, the germicide is hydrogen peroxide.

By adopting the scheme, the bactericide can generate a synergistic effect with the solvent, so that the finished foam decontaminating agent has excellent sterilizing capability, the freezing point of the foam decontaminating agent is remarkably improved, and the foam decontaminating agent can be effectively used in a low-temperature environment.

Preferably, by weight, the sodium dodecyl sulfate accounts for 0.4%, the sodium dodecyl polyoxyethylene ether sulfate accounts for 0.4%, the potassium carbonate accounts for 0.8%, the hydrogen peroxide accounts for 20%, the propylene carbonate accounts for 20%, and the balance is deionized water.

By adopting the scheme, the foam decontaminant which has the optimal freezing point and can effectively foam and stabilize the foam can be obtained.

Preferably, the low-temperature-resistant foam decontamination agent further comprises an auxiliary agent, and the auxiliary agent accounts for 0.05% -0.1%.

Further, the auxiliary agent adopts potassium dihydrogen phosphate.

Further, the proportion of the monopotassium phosphate is 0.08%.

By adopting the scheme, the freezing point of the foam decontamination agent can be effectively reduced, the components can be effectively dissolved mutually in a low-temperature environment, the physicochemical properties of the components are not influenced, and the foaming, foam stabilizing and sterilizing effects of the foam decontamination agent can be ensured.

Specifically, in the second aspect of the present invention, a preparation method of a low temperature resistant foam decontaminant is provided, and the preparation method of the low temperature resistant foam decontaminant is used for preparing the low temperature resistant foam decontaminant, and the preparation method of the low temperature resistant foam decontaminant includes the following steps:

adding a solvent, a bactericide, a catalyst, a foaming agent and a foam stabilizer into deionized water in sequence, adding one component every time, stirring and dissolving uniformly, and then adding the next component.

By adopting the scheme, the preparation efficiency of the foam decontaminating agent can be effectively improved.

Preferably, the low temperature resistant foam decontaminant is prepared by a process that requires a temperature of 20 ℃ for each component added

-28 ℃ and shaking ultrasonically.

By adopting the scheme, the foam decontamination agent with excellent foaming, foam stabilizing and sterilizing effects can be obtained.

Preferably, by weight, the foaming agent accounts for 0.2-0.6%, the foam stabilizer accounts for 0.2-0.6%, the catalyst accounts for 0.5-1%, the bactericide accounts for 20-25%, the solvent accounts for 18-24%, and the balance is deionized water.

Further, sodium bicarbonate is used as the catalyst.

Further, the solvent is propylene carbonate.

Preferably, the germicide is hydrogen peroxide.

Preferably, an auxiliary agent is required to be added in the preparation method of the low-temperature-resistant foam decontamination agent, the auxiliary agent is added before a solvent, and the proportion of the auxiliary agent is 0.05-0.1%.

Further, the auxiliary agent adopts potassium dihydrogen phosphate.

Further, the proportion of the monopotassium phosphate is 0.08%.

Preferably, the preparation method of the low temperature resistant foam decontamination agent further comprises the following steps: and (3) pre-dissolving the foam stabilizer, wherein the pre-dissolving of the foam stabilizer is the pre-treatment of the foam stabilizer.

Further, the foam stabilizer pre-dissolving step comprises the following steps:

preparing a preparation solution, namely adding a pre-solvent into deionized water, and uniformly stirring and dissolving to prepare the preparation solution;

preparing a pre-solution, adding the foam stabilizer into the prepared solution, and uniformly stirring and dissolving to prepare the pre-solution;

further, the step of preparing the pre-solution further comprises the following steps: sieving, and sieving the obtained pre-solution through a screen.

By adopting the scheme, the mixing and dissolving of the components in the preparation method of the low-temperature-resistant foam decontamination agent can be effectively enhanced, the moderate viscosity of the prepared low-temperature-resistant foam decontamination agent is ensured, and the implementation of the spraying process is not influenced while the low-temperature-resistant foam decontamination agent has an excellent adhesion effect.

Preferably, the pre-solvent comprises a dissociation term and a stabilization term, the dissociation term adopts one or two of sodium chloride and potassium chloride, and the stabilization term adopts sodium methylsiliconate.

Further, the dissociation term adopts sodium chloride, and the mass fraction ratio of the sodium chloride to the sodium methylsiliconate in the pre-solvent is 1: 1.

Further, the mass fraction ratio of the pre-solvent to the foam stabilizer is 1: 10-15.

By adopting the scheme, the dissociation term in the pre-solvent can effectively promote the dissolution of the foam stabilizer, so that the foam stabilizer is flocculent and condensed, the stability term can promote the dissolution form of the foam stabilizer, the stability of the physical and chemical properties of the foam stabilizer is ensured, and the using effect of the foam stabilizer in the decontamination of the prepared low-temperature resistant foam can be effectively ensured.

Preferably, in the sieving step, the used sieve is one of an 18-mesh sieve, a 20-mesh sieve or a 24-mesh sieve.

By adopting the scheme, the uniformity of the prepared pre-solution can be effectively improved, and massive flocculent coagulation in the solution can be prevented.

In conclusion, the invention has the following beneficial effects:

1. the foam decontamination agent obtained by the invention can effectively inactivate toxic substances such as mustard gas, bacillus subtilis var niger and the like, and has excellent actual working performance;

2. the foam decontaminating agent obtained by the invention can have obvious low-temperature sterilization performance, can still effectively inactivate mustard gas and bacillus subtilis var niger in a subzero environment, even can still not solidify at an extreme low temperature of twenty ℃ below zero, can perform sterilization and inactivation operation in a low-temperature environment, effectively fills the defects in the prior art, meets the use requirements in actual work, and can effectively improve the efficiency and quality of sterilization work.

The specific implementation mode is as follows:

exemplary embodiments will be described in detail herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Examples of the experiments

Scheme 1

Preparation of a low temperature resistant foam decontamination agent:

1. 1000g of deionized water was added to the reaction vessel.

2. 387g of propylene carbonate is added into the container, namely the mass percent is 20%, the temperature in the container is controlled to be 25 ℃, and ultrasonic oscillation is used for stirring uniformly.

3. 290g of hydrogen peroxide, namely 15 percent by mass, is added into the container, the temperature in the container is controlled to be 25 ℃, and ultrasonic waves are used for shaking and stirring the mixture evenly.

4. Adding 15.5g of sodium bicarbonate into the container, namely, the mass percent of the sodium bicarbonate is 0.8%, controlling the temperature in the container to be 25 ℃, and stirring the mixture evenly by using ultrasonic oscillation.

5. Adding 7.8g of sodium dodecyl sulfate into the container, namely, the mass percent of the sodium dodecyl sulfate is 0.4%, controlling the temperature in the container to be 25 ℃, and stirring the mixture evenly by using ultrasonic oscillation.

6. Preparing a preparation liquid, adding 0.4g of sodium silanolate and 0.4g of sodium chloride into 10g of deionized water, and stirring uniformly by ultrasonic oscillation.

7. Preparing a pre-solution, namely adding 7.8g of sodium dodecyl polyoxyethylene ether sulfate, namely the mass percentage of 0.4 percent, into the prepared solution, performing ultrasonic oscillation and uniform stirring, and sieving by adopting a 20-mesh sieve to prepare the pre-solution.

8. And (3) adding the pre-solution into a container, controlling the temperature in the container to be 25 ℃, and oscillating and stirring uniformly by using ultrasonic waves to prepare the foam decontaminating agent.

By adopting the steps, the prepared low-temperature-resistant foam decontamination agent comprises the following components in percentage by weight: the sodium dodecyl sulfate accounts for 0.4%, the sodium dodecyl polyoxyethylene ether sulfate accounts for 0.4%, the sodium bicarbonate accounts for 0.8%, the hydrogen peroxide accounts for 15%, the propylene carbonate accounts for 20%, the sodium silanol accounts for 0.02%, the sodium chloride accounts for 0.02%, and the balance is deionized water.

Scheme 2

Preparation of a low temperature resistant foam decontamination agent: the preparation process of the scheme is substantially the same as that of the scheme 1, and the difference is that a sieving net is not adopted for sieving in the step 7 of the scheme.

Scheme 3

Preparation of a low temperature resistant foam decontamination agent: the procedure is substantially the same as in scheme 1, except that 0.4g of sodium silanolate and 0.4g of deionized water are added in step 6 of the procedure, without the addition of sodium chloride.

Scheme 4

Preparation of a low temperature resistant foam decontamination agent: the procedure is substantially the same as in scheme 1, except that 0.4g of sodium chloride and 0.4g of deionized water are used in step 6 of the scheme, instead of sodium silanolate.

Scheme 5

Preparation of a low temperature resistant foam decontamination agent: the preparation process of the scheme is substantially the same as that of the scheme 1, except that the same amount of diethyl carbonate is added in the step 2 of the scheme to replace propylene carbonate.

Scheme 6

Preparation of a low temperature resistant foam decontamination agent: the preparation process of the scheme is substantially the same as that of the scheme 1, except that the same amount of sodium hypochlorite is added to replace sodium bicarbonate in the step 4 of the scheme.

Scheme 7

Preparation of a low temperature resistant foam decontamination agent:

1. 1000g of deionized water was added to the reaction vessel.

6. Adding 7.8g of sodium dodecyl polyoxyethylene ether sulfate into a container, namely the mass percent of the sodium dodecyl polyoxyethylene ether sulfate is 0.4%, controlling the temperature in the container to be 25 ℃, and stirring uniformly by using ultrasonic oscillation to prepare the foam decontaminating agent.

Detecting the viscosity of the foam decontaminating agent obtained in the scheme 1-7 by adopting a rotational viscometer with the brand of MIAZUM and the model of MZ/NDJ-8S, and detecting the sterilization effect of the foam decontaminating agent obtained in the scheme 1-7 by adopting a bacteria quantitative carrier soaking sterilization method, wherein the concrete implementation process of the bacteria quantitative carrier soaking sterilization method is as follows: soaking bacillus subtilis black variant spore sheets in a buffer solution to shake to form a suspended bacterium solution, adding prepared foam decontaminants with different components into the suspended bacterium solution for sterilization, using a neutralizing agent to stop reaction, taking a certain amount of the suspended bacterium solution after termination, inoculating the suspended bacterium solution into a culture dish, culturing for 12 hours in a 37 ℃ culture box, counting viable bacteria, judging the decontamination effect according to the number of bacterial colonies, and detecting the freezing point of the foam decontaminants obtained in the schemes 1-7 by adopting a mode used in national standard GB/T6587.2-1986 of electronic measuring instrument temperature test, wherein the detection result is shown in Table 1.

TABLE 1 Effect of whether foam stabilizers were pretreated on finished foam decontaminants

Scheme(s)	Freezing point/. degree.C	Sterilizing rate/%)	Viscosity/mpa.s
				1	-12	99.33	142
2	-13	96.74	157
				3	-7	98.21	115
4	-15	94.78	169
				5	-1	92.53	126
6	-3	91.98	119
				7	-6	90.45	112

In the practical use process, the applicant finds that the foam decontamination agent is used in a complex environment and needs to use a large dose to finish the sterilization and inactivation tasks of the environment, and in the further research process of the applicant, the reason for the above situation is found to be that the contact time between the existing foam decontamination agent and a body to be sterilized in the complex environment is short, and the normal sterilization efficiency of the foam decontamination agent is seriously influenced.

As shown in table 1, the viscosity of the foam decontaminant can be effectively increased by using the mixture ratio provided by the present invention and by pretreating the foam stabilizer, the viscosity of the foam decontaminant can be stabilized by performing the sieving step and adding the stabilizing item, and meanwhile, when the mass percentages of the components in the solvent are kept unchanged, the sterilizing effect of the foam decontaminant is enhanced and then weakened along with the increase of the viscosity, and when the viscosity is 142mpa.s, the optimal sterilizing effect is achieved, and secondly, when the mass percentages of the components in the solvent are kept unchanged, the freezing point, the sterilizing rate and the viscosity of the foam decontaminant are reduced along with the increase of the viscosity, and when the mixture ratio provided by the present invention is not used, the freezing point, the sterilizing rate and the viscosity of the foam decontaminant are significantly lower than the viscosity of the foam decontaminant prepared by using the mixture ratio provided by the present invention.

Therefore, the foam decontaminant prepared by the method for pretreating the foam stabilizer provided by the invention has the optimal freezing point, viscosity and sterilizing effect.

Example 1

Preparation of a low temperature resistant foam decontamination agent:

1. 1000g of deionized water was added to the reaction vessel.

2. 291g of propylene carbonate is added into the container, namely the mass percent is 15%, the temperature in the container is controlled to be 25 ℃, and ultrasonic waves are used for shaking and stirring the mixture evenly.

3. Adding 194g of hydrogen peroxide into the container, namely 10 percent by mass, controlling the temperature in the container to be 25 ℃, and stirring uniformly by using ultrasonic oscillation.

Example 2

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 15% by mass and hydrogen peroxide is used in an amount of 15% by mass.

Example 3

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 15% by mass and hydrogen peroxide is used in an amount of 20% by mass.

Example 4

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 15% by mass and hydrogen peroxide is used in an amount of 25% by mass.

Example 5

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 15% by mass and hydrogen peroxide is used in an amount of 30% by mass.

Example 6

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 18% by mass and hydrogen peroxide is used in an amount of 10% by mass.

Example 7

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 18% by mass and hydrogen peroxide is used in an amount of 15% by mass.

Example 8

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 18% by mass and hydrogen peroxide is used in an amount of 20% by mass.

Example 9

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 18% by mass and hydrogen peroxide is used in an amount of 25% by mass.

Example 10

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 18% by mass and hydrogen peroxide is used in an amount of 30% by mass.

Example 11

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in 20% by mass and hydrogen peroxide is used in 10% by mass.

Example 12

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in 20% by mass and hydrogen peroxide is used in 15% by mass.

Example 13

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in 20% by mass and hydrogen peroxide is used in 20% by mass.

Example 14

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 20% by mass and hydrogen peroxide is used in an amount of 25% by mass.

Example 15

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 20% by mass and hydrogen peroxide is used in an amount of 30% by mass.

Example 16

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 22% by mass and hydrogen peroxide is used in an amount of 10% by mass.

Example 17

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 22% by mass and hydrogen peroxide is used in an amount of 15% by mass.

Example 18

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 22% by mass and hydrogen peroxide is used in an amount of 20% by mass.

Example 19

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 22% by mass and hydrogen peroxide is used in an amount of 25% by mass.

Example 20

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 22% by mass and hydrogen peroxide is used in an amount of 30% by mass.

Example 21

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 24% by mass and hydrogen peroxide is used in an amount of 10% by mass.

Example 22

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 24% by mass and hydrogen peroxide is used in an amount of 15% by mass.

Example 23

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 24% by mass and hydrogen peroxide is used in an amount of 20% by mass.

Example 24

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 24% by mass and hydrogen peroxide is used in an amount of 25% by mass.

Example 25

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in an amount of 24% by mass and hydrogen peroxide is used in an amount of 30% by mass.

Example 26

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in the amount of 26% by mass and hydrogen peroxide is used in the amount of 10% by mass.

Example 27

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in the amount of 26% by mass and hydrogen peroxide is used in the amount of 15% by mass.

Example 28

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in the amount of 26% by mass and hydrogen peroxide is used in the amount of 20% by mass.

Example 29

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in the amount of 26% by mass and hydrogen peroxide is used in the amount of 25% by mass.

Example 30

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 1, except that propylene carbonate is used in the amount of 26% by mass and hydrogen peroxide is used in the amount of 30% by mass.

The foaming property and the foam stabilizing property of the foam decontaminant obtained in the embodiment 1-30 are detected by adopting a Ross-miles foam experiment method (a Roche foam tester used in the method conforms to the national standard GB/T13173-2008), the sterilizing effect of the foam decontaminant obtained in the embodiment 1-30 is detected by adopting a bacteria quantitative carrier soaking sterilization method, and the concrete implementation process of the bacteria quantitative carrier soaking sterilization method is as follows: soaking bacillus subtilis black variant spore sheets in a buffer solution to shake to form a suspension liquid, adding prepared foam decontaminants with different components into the suspension liquid for sterilization, using a neutralizing agent to stop reaction, taking a certain amount of the suspension liquid after termination, inoculating the suspension liquid into a culture dish, culturing for 12 hours in a 37 ℃ culture box, counting viable bacteria, judging the decontamination effect according to the number of bacterial colonies, and measuring the freezing point by adopting a mode used in national standard GB/T6587.2-1986 of electronic measuring instrument temperature test, wherein the detection result is shown in Table 2.

TABLE 2 influence of different solvent and fungicide ratios on the finished foam decontaminant

As shown in table 2, in the formulation provided by the present invention, when the mass percentage of the solvent is kept constant, the foaming volume, the foam half-life period, and the sterilization rate of the obtained foam decontaminant all show a tendency of rising first and then falling with the rise of the mass percentage of the bactericide, the freezing point of the obtained foam decontaminant shows a tendency of falling first and then rising with the rise of the mass percentage of the solvent, when the bactericide with the same mass percentage is used, the foaming volume, the foam half-life period, and the sterilization rate of the obtained foam decontaminant also show a tendency of rising first and then falling, and the freezing point of the obtained foam decontaminant shows a tendency of falling first and then rising.

When the bactericide accounts for 20-25% and the solvent accounts for 18-24%, the obtained foam decontaminant has excellent foaming volume, foam half-life period, sterilization rate and freezing point, and when the bactericide accounts for 20% and the solvent accounts for 20%, the obtained foam decontaminant has optimal foaming volume, foam half-life period, sterilization rate and freezing point.

Therefore, in the embodiment, the low-temperature resistant foam decontaminant prepared by the method has the following components in the ratio of the components in the finished foam decontaminant with the optimal properties: according to the weight, the sodium dodecyl sulfate accounts for 0.4%, the sodium dodecyl polyoxyethylene ether sulfate accounts for 0.4%, the potassium carbonate accounts for 0.8%, the hydrogen peroxide accounts for 20%, the propylene carbonate accounts for 20%, and the balance is deionized water.

Example 31

Preparation of a low temperature resistant foam decontamination agent:

1. 1000g of deionized water was added to the reaction vessel.

2. Adding 1g of monopotassium phosphate into a container, namely, 0.05 percent by mass, controlling the temperature in the container to be 25 ℃, and stirring uniformly by using ultrasonic oscillation.

3. 388g of propylene carbonate is added into the container, the temperature in the container is controlled to be 25 ℃, and ultrasonic oscillation is used for stirring evenly.

4. 388g of hydrogen peroxide is added into the container, the temperature in the container is controlled to be 25 ℃, and ultrasonic waves are used for shaking and stirring the mixture evenly.

5. 15.5g of potassium carbonate was added to the vessel, and the temperature in the vessel was controlled to 25 ℃ and stirred uniformly with ultrasonic oscillation.

6. 7.8g of sodium dodecyl sulfate was added to the vessel, and the temperature in the vessel was controlled to 25 ℃ and stirred uniformly by ultrasonic oscillation.

7. Preparing a preparation liquid, adding 0.4g of sodium silanolate and 0.4g of sodium chloride into 10g of deionized water, and stirring uniformly by ultrasonic oscillation.

8. Preparing a pre-solution, adding 7.8g of sodium dodecyl polyoxyethylene ether sulfate into the prepared solution, performing ultrasonic oscillation and stirring uniformly, and sieving by using a 20-mesh sieve to prepare the pre-solution.

9. And (3) adding the pre-solution into a container, controlling the temperature in the container to be 25 ℃, and oscillating and stirring uniformly by using ultrasonic waves to prepare the foam decontaminating agent.

Example 32

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 31, except that the amount of potassium dihydrogen phosphate used in this example is 0.08% by mass.

Example 33

Preparation of a low temperature resistant foam decontamination agent: the preparation process of this example is substantially the same as that of example 30, except that the amount of potassium dihydrogen phosphate used in this example is 0.1% by mass.

The foaming property and the foam stabilizing property of the foam decontaminant obtained in the embodiment 31-33 are detected by adopting a Ross-miles foam experiment method (a Roche foam tester used in the method conforms to the national standard GB/T13173-2008), the sterilizing effect of the foam decontaminant obtained in the embodiment 31-33 is detected by adopting a bacteria quantitative carrier soaking sterilization method, and the concrete implementation process of the bacteria quantitative carrier soaking sterilization method is as follows: soaking bacillus subtilis black variant spore sheets in a buffer solution to shake to form a suspension liquid, adding prepared foam decontaminants with different components into the suspension liquid for sterilization, using a neutralizing agent to stop reaction, taking a certain amount of the suspension liquid after termination, inoculating the suspension liquid into a culture dish, culturing for 12 hours in a 37 ℃ culture box, counting viable bacteria, judging the decontamination effect according to the number of bacterial colonies, and measuring the freezing point by adopting a mode used in national standard GB/T6587.2-1986 of electronic measuring instrument temperature test, wherein the detection result is shown in Table 3.

TABLE 3 influence of different compounding ratio of auxiliary agents on the performance of foam decontaminant

Examples	Foaming volume/cm³	Foam half life/min	Freezing point/. degree.C	Sterilization rate/%)
					31	430	6.9	-17	99.13
32	430	7.2	-19	99.47
					33	430	7.0	-18	99.32

As can be seen from table 3, when the contents of other components are not changed, the addition of the auxiliary agent monopotassium phosphate will significantly increase the foaming volume, the foam half-life period, the freezing point and the sterilization rate of the obtained foam decontaminant, and secondly, under the condition that other conditions are not changed, when the mass percentage of the auxiliary agent monopotassium phosphate is increased within the range of 0.05% -0.1%, the foaming volume, the foam half-life period, the freezing point and the sterilization rate of the obtained foam decontaminant are increased and then decreased, and when the mass ratio of the auxiliary agent monopotassium phosphate is 0.08%, the obtained foam decontaminant has the optimal foaming volume, foam half-life period, freezing point and sterilization rate.

In conclusion, the foam decontaminant obtained by the invention can effectively inactivate toxic substances such as mustard gas, bacillus subtilis var niger and the like, and has excellent practical working performance; the foam decontaminating agent obtained by the invention can have obvious low-temperature sterilization performance, can still effectively inactivate mustard gas and bacillus subtilis var niger in a subzero environment, even can still not solidify at an extreme low temperature of twenty ℃ below zero, can perform sterilization and inactivation operation in a low-temperature environment, effectively fills the defects in the prior art, meets the use requirements in actual work, and can effectively improve the efficiency and quality of sterilization work.

It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A low temperature resistant foam decontaminant is characterized in that: the low-temperature-resistant foam decontamination agent comprises a foaming agent, a foam stabilizer, a catalyst, a solvent, a bactericide and deionized water, wherein the foaming agent adopts lauryl sodium sulfate, the foam stabilizer adopts lauryl polyoxyethylene ether sodium sulfate, and according to the weight, the ratio of the foaming agent to the bactericide is 0.2-0.6%, the ratio of the foam stabilizer to the bactericide is 0.5-1%, the ratio of the bactericide to the bactericide is 20-25%, the ratio of the solvent to the bactericide is 18-24%, and the balance is deionized water;

the catalyst is one or two of potassium carbonate and sodium bicarbonate, the solvent is propylene carbonate, and the bactericide is hydrogen peroxide.

2. The low temperature resistant foam sanitizer according to claim 1, wherein: the mass percentage ratio of the foaming agent to the foam stabilizer is 1: 1-2.

3. The low temperature resistant foam sanitizer according to claim 2, wherein: the catalyst adopts sodium bicarbonate.

4. The low temperature resistant foam sanitizer according to claim 3, wherein: according to the weight, the sodium dodecyl sulfate accounts for 0.4%, the sodium dodecyl polyoxyethylene ether sulfate accounts for 0.4%, the potassium carbonate accounts for 0.8%, the hydrogen peroxide accounts for 20%, the propylene carbonate accounts for 20%, and the balance is deionized water.

5. A method of preparing a low temperature resistant foam sanitizer according to any of claims 1 to 4, wherein: the preparation method of the low-temperature-resistant foam decontamination agent comprises the following steps:

6. The method of preparing the low temperature resistant foam decontaminant of claim 5, wherein: in the preparation method of the low-temperature-resistant foam decontamination agent, the temperature needs to be controlled to be 20-28 ℃ when one component is added, and ultrasonic oscillation is carried out.