CN108126373B - Preparation method of high-temperature-resistant defoaming agent - Google Patents
Preparation method of high-temperature-resistant defoaming agent Download PDFInfo
- Publication number
- CN108126373B CN108126373B CN201711282693.8A CN201711282693A CN108126373B CN 108126373 B CN108126373 B CN 108126373B CN 201711282693 A CN201711282693 A CN 201711282693A CN 108126373 B CN108126373 B CN 108126373B
- Authority
- CN
- China
- Prior art keywords
- parts
- defoaming agent
- cellulose
- temperature
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
- B01D19/0409—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance compounds containing Si-atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a preparation method of a high-temperature-resistant defoaming agent, and belongs to the technical field of defoaming agent preparation. The invention takes poplar as raw material, obtains wood nano-cellulose by crushing, extracting, delignifying and ultrasonic crushing, then obtains the high-temperature resistant defoaming agent by soaking methyl silicone oil and dispersing with fumed silica at high speed, improves the wettability and the dispersibility with an organic phase, accelerates the diffusion rate of a nano-cellulose oil phase at high temperature, reduces the outer surface of surrounding bubbles to cause bubble breakage, and accelerates the defoaming rate of the methyl silicone oil to a certain extent at high temperature; the methyl silicone oil with the defoaming effect has good chemical stability and is not easy to react with substances of a foaming system, the affinity of the methyl silicone oil to cellulose is stronger than that of water, the viscosity is high, and the solubility in water is very low, so that the defoaming time of an equivalent defoaming agent is longer, and the pore structure of the cellulose is beneficial to converting large foam into small foam, so that the defoaming effect of the defoaming agent is enhanced, the foam inhibition time is long, and the application prospect is wide.
Description
Technical Field
The invention discloses a preparation method of a high-temperature-resistant defoaming agent, and belongs to the technical field of defoaming agent preparation.
Background
Defoamers, also known as defoamers, are food additives that reduce surface tension during food processing, inhibit foam generation, or eliminate foam already generated. The defoaming agent permitted in China comprises 7 types of emulsified silicone oil, a higher alcohol fatty acid ester compound, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether, polyoxypropylene polyoxyethylene glycerol ether, polydimethylsiloxane and the like. The defoaming agent is mainly suitable for defoaming and foam inhibition in water systems of circuit board processes, chemical industry, electroplating, printing and dyeing, papermaking, medicines, water-based ink, ceramic slitting, steel plate cleaning, aluminum industry processing, various sewage treatments, various industries and the like.
The production of foam can bring a lot of harm to people, and the production capacity receives great restriction: for example, in various fermentation tank reaction kettle cooking tanks and other equipment in various biological fermentations, in order to prevent the occurrence of foam and overflow loss, the feeding coefficient is greatly reduced and sometimes cannot reach 30%. Waste of raw materials and products is caused: the loss of useful or valuable raw materials due to the foam can be caused by spillage, and the resulting waste is self-evident. Oiling processes, such as paper mills, sugar mills, weaving processes in textile mills, often cause spillage due to foam. The reaction period is prolonged. Affecting the quality of the product. Is not conducive to accurate metering. One of the causes of environmental pollution and accidents: the overflowing foam inevitably pollutes the production environment and the surrounding environment, and some accidents even cause serious accidents. Such as: a certain oil refinery in the United states causes a heavy fire disaster and is disastrous due to overflowing of residual oil foam, so that not only is waste caused, but also serious losses are caused to lives and properties of people.
Most of the defoaming agents in the market at present have the defects of low high-temperature defoaming rate and non-durable foam inhibition, so that the invention of the defoaming agent capable of raising the temperature and effectively inhibiting the foam has positive significance in the technical field of defoaming agent preparation.
Disclosure of Invention
The invention mainly solves the technical problems and provides a preparation method of a high-temperature resistant defoaming agent aiming at the defects of low high-temperature defoaming rate and non-persistent foam inhibition of the defoaming agent.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a preparation method of a high-temperature resistant defoaming agent is characterized by comprising the following specific preparation steps:
(1) weighing 400-500 g of poplar, putting the poplar into a grinder, grinding and sieving to obtain sieved powder, weighing 10-15 g of the sieved powder, putting the sieved powder into a Soxhlet extractor, mixing phenethyl alcohol and water at normal temperature to obtain a phenethyl alcohol solution, pouring 300-400 mL of the phenethyl alcohol solution into the Soxhlet extractor, extracting, and removing an extract to obtain a crude cellulose product;
(2) putting the cellulose crude product into a beaker, adding 50-60 mL of sodium chlorite solution into the beaker, adjusting the pH value of the solution by using glacial acetic acid, performing heat preservation treatment, and removing lignin to obtain holocellulose;
(3) soaking holocellulose in 130-160 mL of sodium hydroxide solution, preserving heat, soaking, filtering to remove filtrate to obtain purified cellulose, preparing the purified cellulose into a water suspension, and placing the water suspension in an ultrasonic crusher for ultrasonic treatment to obtain the wood nano-cellulose;
(4) mixing 10-15 parts of silica sol, 4-6 parts of nitric acid solution and 16-20 parts of absolute ethyl alcohol, adding the mixture into a beaker, stirring to obtain a mixed solution, adding 100-110 parts of n-heptane, 4-6 parts of n-butanol and 0.1-0.3 part of sucrose ester into a three-neck flask, dropwise adding the mixed solution into the three-neck flask by using a constant-pressure dropping funnel, starting a stirrer, stirring, dropwise adding 4-5 parts of ammonia water into the three-neck flask, adding 30-40 parts of wood nano cellulose, standing, filtering, and removing filtrate to obtain a filter cake;
(5) according to the weight parts, 40-50 parts of filter cake are placed into 70-80 parts of methyl silicone oil for soaking to obtain oil-soaked nano cellulose gel, the oil-soaked nano cellulose gel is washed by acetone, 40-45 parts of oil-soaked nano cellulose gel and 30-40 parts of fumed silica are mixed and placed in a high-speed dispersion machine for high-speed dispersion, and then the mixture is stood at normal temperature for removing acetone to obtain the high-temperature resistant defoaming agent.
The crushing time in the step (1) is 1-2 hours, the sieved size is 60 meshes, the volume ratio of the mixture of the phenethyl alcohol and the water is 2: 1, the extraction temperature is 90-100 ℃, and the extraction time is 6-8 hours.
The mass fraction of the sodium chlorite solution in the step (2) is 20%, the mass fraction of the glacial acetic acid is 95%, the pH value of the glacial acetic acid adjusting solution is 4.8-5.2, the heat preservation treatment temperature is 75-80 ℃, and the heat preservation treatment time is 5-7 h.
The mass fraction of the sodium hydroxide solution in the step (3) is 25%, the temperature for soaking the holocellulose is 90-100 ℃, the heat preservation soaking time is 2-3 h, the mass fraction of the water suspension is 10-20%, the set power of the ultrasonic pulverizer is 1200-1500W, and the ultrasonic treatment time is 30-45 min.
The mass fraction of the silica sol in the step (4) is 25%, the stirring time is 15-20 min, the dropping speed of the constant-pressure dropping funnel is 3-5 mL/min, the rotating speed of the stirrer is 100-120 r/min, the stirring time is 30-45 min, the mass fraction of the ammonia water is 5%, and the standing time is 12-15 min.
The soaking time in the step (5) is 4-5 hours, the oil-soaked nano cellulose gel is washed by acetone for 3-4 times, the rotating speed of a high-speed dispersion machine is 2000-2200 r/min, the high-speed dispersion time is 10-15 min, and the normal-temperature standing and de-acetone time is 4-5 hours.
The invention has the beneficial effects that:
(1) the invention takes poplar as raw material, the wood nano-cellulose is obtained by crushing, extraction, delignification and ultrasonic crushing, the wood nano-cellulose is mixed and stirred with other effective components such as silica sol, nano-cellulose gel with pores is obtained by filtration, then the high-temperature resistant defoaming agent is obtained by soaking methyl silicone oil and dispersing with gas-phase silica at high speed, the gas-phase silica has large specific surface area and small density, is easy to disperse, shows hydrophilicity without hydrophobic treatment and is difficult to soak and disperse in an organic phase, but the methyl silicone oil in the pores of the nano-cellulose covers the gas-phase silica by diffusion, so that the hydroxyl content on the surface of the gas-phase silica is reduced, the aggregation tendency is weakened, the free energy on the surface is reduced, the surface is changed from hydrophilicity to hydrophobicity, the wettability and the dispersibility with the organic phase are improved, and the invention is beneficial to enhancing the dispersing ability of the silicone, the nano-cellulose oil phase diffusion rate is accelerated at high temperature, and the outer surface of surrounding bubbles can be reduced to cause bubble breakage, so that the defoaming rate of the methyl silicone oil is accelerated to a certain extent under the high-temperature condition;
(2) the methyl silicone oil with the defoaming effect has good chemical stability and is not easy to react with substances of a foaming system, the methyl silicone oil has stronger affinity to cellulose than water, high viscosity and very low solubility in water, the methyl silicone oil is only diffused in the foaming system containing an organic phase through the diffusion effect, and the concentration required by foam inhibition is small, so that the defoaming time of an equivalent defoaming agent is longer, the methyl silicone oil serving as an effective component of the defoaming agent is slowly diffused to the foaming system in the cellulose to play a slow release effect, the concentration of the defoaming agent is not reduced due to the consumption of the methyl silicone oil, and the pore structure of the cellulose is favorable for converting large foam into small foam, so that the defoaming effect of the defoaming agent is enhanced, the foam inhibition time is long, and the application.
Detailed Description
Weighing 400-500 g of poplar, putting the poplar into a crusher, crushing for 1-2 h, sieving with a 60-mesh sieve to obtain sieved powder, weighing 10-15 g of the sieved powder, putting the sieved powder into a Soxhlet extractor, mixing phenethyl alcohol and water at normal temperature according to the volume ratio of 2: 1 to obtain a phenethyl alcohol solution, pouring 300-400 mL of the phenethyl alcohol solution into the Soxhlet extractor, extracting for 6-8 h at 90-100 ℃, and removing the extract to obtain a crude cellulose product; putting the cellulose crude product into a beaker, adding 50-60 mL of 20% sodium chlorite solution into the beaker, adjusting the pH of the solution to 4.8-5.2 by using 95% glacial acetic acid, carrying out heat preservation treatment at 75-80 ℃ for 5-7 h, and removing lignin to obtain holocellulose; soaking holocellulose in 130-160 mL of 25% sodium hydroxide solution at 90-100 ℃, preserving heat, soaking for 2-3 h, filtering to remove filtrate to obtain purified cellulose, preparing the purified cellulose into 10-20% aqueous suspension, and placing the aqueous suspension in an ultrasonic pulverizer to perform ultrasonic treatment for 30-45 min at 1200-1500W to obtain the wood nanocellulose; mixing 10-15 parts by weight of 25% silica sol, 4-6 parts by weight of 5% nitric acid solution and 16-20 parts by weight of absolute ethyl alcohol, adding the mixture into a beaker, stirring for 15-20 min to obtain a mixed solution, adding 100-110 parts of n-heptane, 4-6 parts of n-butanol and 0.1-0.3 part of sucrose ester into a three-neck flask, dropwise adding the mixed solution into the three-neck flask at a dropping rate of 3-5 mL/min by using a constant-pressure dropping funnel, starting a stirrer, stirring for 30-45 min at a rotating speed of 100-120 r/min, dropwise adding 4-5 parts by weight of 5% ammonia water into the three-neck flask, adding 30-40 parts of lignocellulose, standing for 12-15 min, filtering, and removing filtrate to obtain a filter cake; according to the weight parts, 40-50 parts of filter cake are placed into 70-80 parts of methyl silicone oil to be soaked for 4-5 hours to obtain oil-soaked nano cellulose gel, the oil-soaked nano cellulose gel is washed by acetone for 3-4 times, 40-45 parts of oil-soaked nano cellulose gel and 30-40 parts of fumed silica are mixed and placed into a high-speed dispersion machine to be dispersed for 10-15 minutes at a high speed of 2000-2200 r/min, and then the mixture is placed at normal temperature to be de-acetone for 4-5 hours to obtain the high-temperature resistant defoaming agent.
Example 1
Weighing 400g of poplar, putting the poplar into a pulverizer, pulverizing for 1h, sieving by a 60-mesh sieve to obtain sieved powder, weighing 10g of the sieved powder, putting the sieved powder into a Soxhlet extractor, mixing phenethyl alcohol and water at normal temperature according to the volume ratio of 2: 1 to obtain a phenethyl alcohol solution, pouring 300mL of the phenethyl alcohol solution into the Soxhlet extractor, extracting for 6h at 90 ℃, and removing an extract to obtain a crude cellulose product; putting the cellulose crude product into a beaker, adding 50mL of 20 mass percent sodium chlorite solution into the beaker, adjusting the pH of the solution to 4.8 by using 95 mass percent glacial acetic acid, carrying out heat preservation treatment for 5h at 75 ℃, and removing lignin to obtain holocellulose; soaking holocellulose in 130mL of 25% sodium hydroxide solution at 90 ℃, preserving heat and soaking for 2h, filtering to remove filtrate to obtain purified cellulose, preparing the purified cellulose into 10% aqueous suspension, and placing the aqueous suspension in an ultrasonic pulverizer to perform ultrasonic treatment for 30min at 1200W to obtain the wood nanocellulose; according to the weight parts, 10 parts of silica sol with the mass fraction of 25%, 4 parts of nitric acid solution with the mass fraction of 5% and 16 parts of absolute ethyl alcohol are mixed and added into a beaker, the mixture is stirred for 15min to obtain a mixed solution, 100 parts of n-heptane, 4 parts of n-butanol and 0.1 part of sucrose ester are added into a three-neck flask, the mixed solution is dripped into the three-neck flask by a constant pressure dropping funnel at the dripping speed of 3mL/min, a stirrer is started at the same time, after stirring is carried out for 30min at the rotating speed of 100r/min, 4 parts of ammonia water with the mass fraction of 5% and 30 parts of wood nano cellulose are dripped into the three-neck flask, the mixture is kept stand for 12min, and the filtrate is removed to obtain; according to the weight parts, 40 parts of filter cake are placed into 70-80 parts of methyl silicone oil to be soaked for 4 hours to obtain oil-soaked nano cellulose gel, the oil-soaked nano cellulose gel is washed for 3 times by acetone, 40 parts of oil-soaked nano cellulose gel and 30 parts of fumed silica are mixed and placed into a high-speed dispersion machine to be dispersed for 10 minutes at a high speed of 2000r/min, and then the mixture is stood at normal temperature to remove acetone for 4 hours to obtain the high-temperature resistant defoaming agent.
Example 2
Weighing 450g of poplar, putting the poplar into a pulverizer, pulverizing for 1.5h, sieving by a 60-mesh sieve to obtain sieved powder, weighing 12g of the sieved powder, putting the sieved powder into a Soxhlet extractor, mixing phenethyl alcohol and water at normal temperature according to the volume ratio of 2: 1 to obtain a phenethyl alcohol solution, pouring 350mL of the phenethyl alcohol solution into the Soxhlet extractor, extracting for 7h at 95 ℃, and removing the extract to obtain a crude cellulose product; putting the cellulose crude product into a beaker, adding 55mL of 20 mass percent sodium chlorite solution into the beaker, adjusting the pH of the solution to 5.0 by using 95 mass percent glacial acetic acid, carrying out heat preservation treatment at 78 ℃ for 6h, and removing lignin to obtain holocellulose; soaking holocellulose in 150mL of 25% sodium hydroxide solution at 95 ℃, preserving heat, soaking for 2.5h, filtering to remove filtrate to obtain purified cellulose, preparing the purified cellulose into 15% aqueous suspension, and placing the aqueous suspension in an ultrasonic pulverizer to perform ultrasonic treatment for 40min at 1350W to obtain the wood nanocellulose; according to the weight parts, 12 parts of silica sol with the mass fraction of 25%, 5 parts of nitric acid solution with the mass fraction of 5% and 18 parts of absolute ethyl alcohol are mixed and added into a beaker, the mixture is stirred for 17min to obtain a mixed solution, 105 parts of n-heptane, 5 parts of n-butanol and 0.2 part of sucrose ester are added into a three-neck flask, the mixed solution is dripped into the three-neck flask by a constant pressure dropping funnel at the dripping speed of 4mL/min, a stirrer is started at the same time, after stirring is carried out for 40min at the rotating speed of 110r/min, 4 parts of ammonia water with the mass fraction of 5% is dripped into the three-neck flask, 35 parts of wood nano cellulose is added, standing is carried out for 13in, filtering is carried out, and; according to the weight parts, 45 parts of filter cake is placed into 75 parts of methyl silicone oil to be soaked for 4.5 hours to obtain oil-soaked nano-cellulose gel, the oil-soaked nano-cellulose gel is washed by acetone for 3 times, 42 parts of oil-soaked nano-cellulose gel and 35 parts of fumed silica are mixed and placed into a high-speed dispersion machine to be dispersed for 12 minutes at a high speed of 2100/min, and then the mixture is stood at normal temperature to remove acetone for 4.5 hours to obtain the high-temperature resistant defoaming agent.
Example 3
Weighing 500g of poplar, putting the poplar into a crusher, crushing for 2h, sieving by a 60-mesh sieve to obtain sieved powder, weighing 15g of the sieved powder, putting the sieved powder into a Soxhlet extractor, mixing phenethyl alcohol and water at normal temperature according to the volume ratio of 2: 1 to obtain a phenethyl alcohol solution, pouring 400mL of the phenethyl alcohol solution into the Soxhlet extractor, extracting for 8h at 100 ℃, and removing an extract to obtain a crude cellulose product; putting the cellulose crude product into a beaker, adding 60mL of 20 mass percent sodium chlorite solution into the beaker, adjusting the pH of the solution to 5.2 by using 95 mass percent glacial acetic acid, carrying out heat preservation treatment for 7h at the temperature of 80 ℃, and removing lignin to obtain holocellulose; soaking holocellulose in 160mL of 25% sodium hydroxide solution at 100 ℃, preserving heat and soaking for 3h, filtering to remove filtrate to obtain purified cellulose, preparing the purified cellulose into 20% aqueous suspension, and placing the aqueous suspension in an ultrasonic pulverizer to perform ultrasonic treatment for 45min at 1500W power to obtain the wood nanocellulose; mixing 15 parts by weight of 25% silica sol, 6 parts by weight of 5% nitric acid solution and 20 parts by weight of absolute ethyl alcohol, adding the mixture into a beaker, stirring for 20min to obtain a mixed solution, adding 110 parts by weight of n-heptane, 6 parts by weight of n-butanol and 0.3 part by weight of sucrose ester into a three-neck flask, dropwise adding the mixed solution into the three-neck flask at a dropping rate of 5mL/min by using a constant-pressure dropping funnel, starting a stirrer, stirring at a rotating speed of 120r/min for 45min, dropwise adding 5 parts by weight of 5% ammonia water into the three-neck flask, adding 40 parts by weight of wood nano cellulose, standing for 15min, filtering, and removing filtrate to obtain a filter cake; 50 parts of filter cake is placed into 80 parts of methyl silicone oil to be soaked for 5 hours according to the parts by weight to obtain oil-soaked nano cellulose gel, the oil-soaked nano cellulose gel is washed for 4 times by acetone, 45 parts of oil-soaked nano cellulose gel and 40 parts of fumed silica are mixed and placed into a high-speed dispersion machine to be dispersed for 15 minutes at a high speed of 2200r/min, and then the mixture is stood at normal temperature to remove acetone for 5 hours to obtain the high-temperature resistant defoaming agent.
Comparative example
The performance of the high-temperature resistant defoaming agent prepared by the invention and the performance of the high-temperature resistant defoaming agent in the comparative example are detected by taking the high-temperature resistant defoaming agent produced by a company in Hebei as the comparative example, and the detection results are shown in Table 1:
1. the test method comprises the following steps:
defoaming rate and durability test method: four equal parts of the coating in production are placed at a high temperature of 90 ℃, equal parts of the defoaming agents in examples 1-3 and comparative examples are respectively placed in the coating, and the defoaming result is observed every 30 minutes.
TABLE 1
| Test items | Example 1 | Example 2 | Example 3 | Comparative example |
| Defoaming ratio after 30 minutes (%) | 85.6 | 90.4 | 94.2 | 78.1 |
| Defoaming ratio after 60 minutes (%) | 87.5 | 92.4 | 95.3 | 80.2 |
| Defoaming ratio after 90 minutes (%) | 89.2 | 93.6 | 96.4 | 81.8 |
| Defoaming ratio after one week (%) | 88.4 | 82.9 | 95.6 | 72.9 |
According to the data, the defoaming agent of the high-temperature resistant defoaming agent prepared by the invention is maintained at more than 90% after one week, and has good durability, high defoaming rate and good high-temperature resistance at the high temperature of 90 ℃, thereby having wide application prospect.
Claims (6)
1. A preparation method of a high-temperature resistant defoaming agent is characterized by comprising the following specific preparation steps:
(1) weighing 400-500 g of poplar, putting the poplar into a grinder, grinding and sieving to obtain sieved powder, weighing 10-15 g of the sieved powder, putting the sieved powder into a Soxhlet extractor, mixing phenethyl alcohol and water at normal temperature to obtain a phenethyl alcohol solution, pouring 300-400 mL of the phenethyl alcohol solution into the Soxhlet extractor, extracting, and removing an extract to obtain a crude cellulose product;
(2) putting the cellulose crude product into a beaker, adding 50-60 mL of sodium chlorite solution into the beaker, adjusting the pH value of the solution by using glacial acetic acid, performing heat preservation treatment, and removing lignin to obtain holocellulose;
(3) soaking holocellulose in 130-160 mL of sodium hydroxide solution, preserving heat, soaking, filtering to remove filtrate to obtain purified cellulose, preparing the purified cellulose into a water suspension, and placing the water suspension in an ultrasonic crusher for ultrasonic treatment to obtain the wood nano-cellulose;
(4) mixing 10-15 parts by weight of silica sol, 4-6 parts by weight of 5% nitric acid solution and 16-20 parts by weight of absolute ethyl alcohol, adding the mixture into a beaker, stirring to obtain a mixed solution, adding 100-110 parts by weight of n-heptane, 4-6 parts by weight of n-butanol and 0.1-0.3 part by weight of sucrose ester into a three-neck flask, dropwise adding the mixed solution into the three-neck flask by using a constant-pressure dropping funnel, starting a stirrer, stirring, dropwise adding 4-5 parts by weight of ammonia water into the three-neck flask, adding 30-40 parts by weight of wood nano cellulose, standing, filtering, and removing filtrate to obtain a filter cake;
(5) according to the weight parts, 40-50 parts of filter cake are placed into 70-80 parts of methyl silicone oil for soaking to obtain oil-soaked nano cellulose gel, the oil-soaked nano cellulose gel is washed by acetone, 40-45 parts of oil-soaked nano cellulose gel and 30-40 parts of fumed silica are mixed and placed in a high-speed dispersion machine for high-speed dispersion, and then the mixture is stood at normal temperature for removing acetone to obtain the high-temperature resistant defoaming agent.
2. The method for preparing the high-temperature resistant defoaming agent according to claim 1, wherein the method comprises the following steps: the crushing time in the step (1) is 1-2 hours, the sieved size is 60 meshes, the volume ratio of the mixture of the phenethyl alcohol and the water is 2: 1, the extraction temperature is 90-100 ℃, and the extraction time is 6-8 hours.
3. The method for preparing the high-temperature resistant defoaming agent according to claim 1, wherein the method comprises the following steps: the mass fraction of the sodium chlorite solution in the step (2) is 20%, the mass fraction of the glacial acetic acid is 95%, the pH value of the glacial acetic acid adjusting solution is 4.8-5.2, the heat preservation treatment temperature is 75-80 ℃, and the heat preservation treatment time is 5-7 h.
4. The method for preparing the high-temperature resistant defoaming agent according to claim 1, wherein the method comprises the following steps: the mass fraction of the sodium hydroxide solution in the step (3) is 25%, the temperature for soaking the holocellulose is 90-100 ℃, the heat preservation soaking time is 2-3 h, the mass fraction of the water suspension is 10-20%, the set power of the ultrasonic pulverizer is 1200-1500W, and the ultrasonic treatment time is 30-45 min.
5. The method for preparing the high-temperature resistant defoaming agent according to claim 1, wherein the method comprises the following steps: the mass fraction of the silica sol in the step (4) is 25%, the stirring time is 15-20 min, the dropping speed of the constant-pressure dropping funnel is 3-5 mL/min, the rotating speed of the stirrer is 100-120 r/min, the stirring time is 30-45 min, the mass fraction of the ammonia water is 5%, and the standing time is 12-15 min.
6. The method for preparing the high-temperature resistant defoaming agent according to claim 1, wherein the method comprises the following steps: the soaking time in the step (5) is 4-5 hours, the oil-soaked nano cellulose gel is washed by acetone for 3-4 times, the rotating speed of a high-speed dispersion machine is 2000-2200 r/min, the high-speed dispersion time is 10-15 min, and the normal-temperature standing and de-acetone time is 4-5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711282693.8A CN108126373B (en) | 2017-12-07 | 2017-12-07 | Preparation method of high-temperature-resistant defoaming agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711282693.8A CN108126373B (en) | 2017-12-07 | 2017-12-07 | Preparation method of high-temperature-resistant defoaming agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108126373A CN108126373A (en) | 2018-06-08 |
| CN108126373B true CN108126373B (en) | 2020-02-14 |
Family
ID=62389182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711282693.8A Active CN108126373B (en) | 2017-12-07 | 2017-12-07 | Preparation method of high-temperature-resistant defoaming agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108126373B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109893885A (en) * | 2019-02-28 | 2019-06-18 | 常州市天宁区鑫发织造有限公司 | A kind of weaving preparation method of defoaming agent |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861331A (en) * | 2014-02-28 | 2014-06-18 | 苏州恒康新材料有限公司 | Defoaming agent composition as well as preparation method thereof |
| CN104831572A (en) * | 2015-02-13 | 2015-08-12 | 国际竹藤中心 | Method of preparing microfibrillated cellulose from bamboo parenchyma cells |
| CN104826365A (en) * | 2015-05-12 | 2015-08-12 | 常熟理工学院 | Special defoaming agent for high-interface fluorocarbon resin emulsion and preparation method of special defoaming agent |
| CN106492707A (en) * | 2016-08-31 | 2017-03-15 | 余姚市楷瑞电子有限公司 | Surface activator composition |
-
2017
- 2017-12-07 CN CN201711282693.8A patent/CN108126373B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861331A (en) * | 2014-02-28 | 2014-06-18 | 苏州恒康新材料有限公司 | Defoaming agent composition as well as preparation method thereof |
| CN104831572A (en) * | 2015-02-13 | 2015-08-12 | 国际竹藤中心 | Method of preparing microfibrillated cellulose from bamboo parenchyma cells |
| CN104826365A (en) * | 2015-05-12 | 2015-08-12 | 常熟理工学院 | Special defoaming agent for high-interface fluorocarbon resin emulsion and preparation method of special defoaming agent |
| CN106492707A (en) * | 2016-08-31 | 2017-03-15 | 余姚市楷瑞电子有限公司 | Surface activator composition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108126373A (en) | 2018-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105383203B (en) | A kind of alcohol-free environment-friendly type fountain solution and preparation method thereof | |
| EP0301531B1 (en) | Use of a composition as anti-foam agent | |
| CN109589653B (en) | Defoaming agent and preparation method and application thereof | |
| US9023781B2 (en) | Particle defoamer comprising a silicone emulsion and process for preparing same | |
| CN101845770A (en) | Emulsion antifoaming agent for making paper and preparation method thereof | |
| CN108126373B (en) | Preparation method of high-temperature-resistant defoaming agent | |
| CN114318903A (en) | Low-foam one-bath dyeing oil-removing leveling agent | |
| EP0042355A1 (en) | Easily dispersible dyestuff preparations | |
| CN107904987B (en) | Water-based active direct-injection printing ink suitable for Beijing porcelain sprayer and preparation method thereof | |
| CN109750525A (en) | A kind of scale liquid disperse dyes and preparation method thereof | |
| US2923687A (en) | Antifoam compositions and uses thereof | |
| CN110872538B (en) | Silicon wafer cutting fluid, preparation method and application thereof, and sand slurry for cutting silicon wafer | |
| JP4916901B2 (en) | Antifoam composition | |
| CA1151812A (en) | Methods of deinking secondary fibers | |
| CN105746501B (en) | Folium eucalypti oil assistant and preparation method thereof and fabric final finishing working solution | |
| CN115029016A (en) | Liquid vat dye for printing and preparation method thereof | |
| CN109957287A (en) | A kind of environment-friendlyink ink and preparation method thereof | |
| CN112662230A (en) | Dye ink | |
| CN109280417A (en) | Neutral deinking agent and preparation method thereof | |
| CN117205618B (en) | Organosilicon defoamer composition and preparation method and application thereof | |
| CN111389056A (en) | Method for improving white carbon black sedimentation problem in mineral oil defoaming agent by using bentonite | |
| CN113999541B (en) | Post-treatment method of dye raw material | |
| CN117247695B (en) | Diluent for water-based thermal transfer printing ink and preparation method thereof | |
| CN114773878B (en) | High-dispersity nano disperse dye and preparation method thereof | |
| JP2003265904A (en) | Defoaming agent composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191017 Address after: 414, block C, Tianhong science and technology building, No. 801, Changwu Middle Road, Wujin District, Changzhou City, Jiangsu Province Applicant after: Changzhou Yu Yu Intellectual Property Co., Ltd. Address before: 213000 YingYuan Road, Yongfang street, yonglou street, Changzhou, Jiangsu, 58-8 Applicant before: Changzhou Dijun metal component factory |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191230 Address after: No. 1569, Xingping Second Road, Zhongdai street, Pinghu City, Jiaxing City, Zhejiang Province Applicant after: Jiaxing wattek Environmental Protection Technology Co., Ltd Address before: 414, block C, Tianhong science and technology building, No. 801, Changwu Middle Road, Wujin District, Changzhou City, Jiangsu Province Applicant before: Changzhou Yu Yu Intellectual Property Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |