News Details
Polyphosphate aluminum paint crosslinking agent
2017-7-28 11:46:42
Polyphosphate aluminum paint crosslinking agent
This paper introduces the crosslinking mechanism of aluminum phosphate crosslinking agent and its application in various kinds of water glass materials. The test data shows that the aluminum crosslinking agent of the polymerization phosphoric acid is non-toxic and harmless, and the crosslinking performance is excellent.
Water glass, due to the presence of soluble alkaline metal ions, has a water-soluble base, which is resistant to water resistance, easy to return, and unsuitable for humid environment. Therefore, it is necessary to add some crosslinking agent to improve its water resistance and crosslinking performance.
The commonly used crosslinking agent has metal oxide, inorganic acid, fluorosilicate and so on. But these crosslinking agents in the use of the process, there are many inideal places. So people have been looking for new crosslinking agents. The ideal cross-linking agent should have the following characteristics:
(1) the product is non-toxic or low-toxic, and the production process is free of pollution. (2) the crosslinking speed is moderate and does not show premature condensation or incoagulation. (3) the crosslinking performance is better than the previous crosslinking agent and meets the industry standard.
According to the above requirements, we have synthesized the polymerization phosphoric acid aluminum crosslinking agent, which has not only effectively overcome the deficiency of traditional crosslinking agent, but also pollution-free, which is in line with the need of environmental protection.
Synthetic process. Phosphoric acid aluminum is a product that is processed by polymerization and chemical additives by mixing the phosphoric acid and alumina as raw materials. Process flow: phosphoric acid + alumina, mixture, polymerization reaction, pulverization, polymerization phosphoric acid
Water glass is most commonly used in sodium glass, and the structure of sodium glass is: Na2O2 [sio-o -] n-na: n is the modulus value. The water-soluble difference of sodium silicate glass is caused by the water solubility of Na +. The most direct and effective method is to replace the Na + with the hydrophobic group or ion. The polymerization phosphoric acid can provide H +, and it can replace Na + by H + and promote the gelation of sodium silicate glass. An example is the polymerization of aluminum phosphate with polymerization degree 3
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
This paper introduces the crosslinking mechanism of aluminum phosphate crosslinking agent and its application in various kinds of water glass materials. The test data shows that the aluminum crosslinking agent of the polymerization phosphoric acid is non-toxic and harmless, and the crosslinking performance is excellent.
Water glass, due to the presence of soluble alkaline metal ions, has a water-soluble base, which is resistant to water resistance, easy to return, and unsuitable for humid environment. Therefore, it is necessary to add some crosslinking agent to improve its water resistance and crosslinking performance.
The commonly used crosslinking agent has metal oxide, inorganic acid, fluorosilicate and so on. But these crosslinking agents in the use of the process, there are many inideal places. So people have been looking for new crosslinking agents. The ideal cross-linking agent should have the following characteristics:
(1) the product is non-toxic or low-toxic, and the production process is free of pollution. (2) the crosslinking speed is moderate and does not show premature condensation or incoagulation. (3) the crosslinking performance is better than the previous crosslinking agent and meets the industry standard.
According to the above requirements, we have synthesized the polymerization phosphoric acid aluminum crosslinking agent, which has not only effectively overcome the deficiency of traditional crosslinking agent, but also pollution-free, which is in line with the need of environmental protection.
Synthetic process. Phosphoric acid aluminum is a product that is processed by polymerization and chemical additives by mixing the phosphoric acid and alumina as raw materials. Process flow: phosphoric acid + alumina, mixture, polymerization reaction, pulverization, polymerization phosphoric acid
Water glass is most commonly used in sodium glass, and the structure of sodium glass is: Na2O2 [sio-o -] n-na: n is the modulus value. The water-soluble difference of sodium silicate glass is caused by the water solubility of Na +. The most direct and effective method is to replace the Na + with the hydrophobic group or ion. The polymerization phosphoric acid can provide H +, and it can replace Na + by H + and promote the gelation of sodium silicate glass. An example is the polymerization of aluminum phosphate with polymerization degree 3
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
Flash Point°C161.1°C
The crosslinking speed of sodium silicate glass depends on the velocity of hydrolysis of polyphosphate. It was determined that the polymerization degree of 3 was a low strength (pKa = + 115-116) solid acid, and its hydrolysis produced H + velocity moderate and the crosslinking reaction was mild. At the same time it has a high acid value (up to 613mlq), and the crosslinking performance is significant.
The toxicity test products of polyphosphate aluminum were tested by oral acute toxicity, and the half lethal dose of mice was 1810g, which was nontoxic. In addition, the rabbit's wounded skin and don't break the skin, the skin cell tissue for one-off stimulation test, the results did not occur red rash, swelling, and other anomalies, so the product for skin, use safety.
In the application of inorganic moulding materials, the crosslinking agent and the perlite mixture are mixed, the water glass is fully stirred, forming 7107 x 7107 x 7107cm in the steel mould, and the waterproof performance test is carried out for 7 days. Boiling water module after 100 ℃ for 2 h after measuring its compressive strength.
As the crosslinking agent of sodium silicate glass, it has better performance than other crosslinking agent, which is similar to that of similar products, and can meet the pressure strength (1147MPa) of the lightweight aggregate.
The application of acid concrete in acid-resistant concrete is usually used as crosslinking agent for sodium fluorosilicate. Because the sodium fluoride is toxic and the storage process is easy to absorb, it can't be used in the food industry, and it is harmful to people's health directly by releasing HF poisonous gas during the treatment of acid treatment. It can avoid the above deficiencies by replacing sodium fluorosilicate with polyphosphate aluminum, which can also meet the requirements of building anti-corrosion materials.
Sample recipe: 100 sodium water glass, 15 aluminum phosphate, and 300 pieces of cast stone powder. The initial coagulation time is 2117h and the final coagulation time is 5142h.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
The crosslinking speed of sodium silicate glass depends on the velocity of hydrolysis of polyphosphate. It was determined that the polymerization degree of 3 was a low strength (pKa = + 115-116) solid acid, and its hydrolysis produced H + velocity moderate and the crosslinking reaction was mild. At the same time it has a high acid value (up to 613mlq), and the crosslinking performance is significant.
The toxicity test products of polyphosphate aluminum were tested by oral acute toxicity, and the half lethal dose of mice was 1810g, which was nontoxic. In addition, the rabbit's wounded skin and don't break the skin, the skin cell tissue for one-off stimulation test, the results did not occur red rash, swelling, and other anomalies, so the product for skin, use safety.
In the application of inorganic moulding materials, the crosslinking agent and the perlite mixture are mixed, the water glass is fully stirred, forming 7107 x 7107 x 7107cm in the steel mould, and the waterproof performance test is carried out for 7 days. Boiling water module after 100 ℃ for 2 h after measuring its compressive strength.
As the crosslinking agent of sodium silicate glass, it has better performance than other crosslinking agent, which is similar to that of similar products, and can meet the pressure strength (1147MPa) of the lightweight aggregate.
The application of acid concrete in acid-resistant concrete is usually used as crosslinking agent for sodium fluorosilicate. Because the sodium fluoride is toxic and the storage process is easy to absorb, it can't be used in the food industry, and it is harmful to people's health directly by releasing HF poisonous gas during the treatment of acid treatment. It can avoid the above deficiencies by replacing sodium fluorosilicate with polyphosphate aluminum, which can also meet the requirements of building anti-corrosion materials.
Sample recipe: 100 sodium water glass, 15 aluminum phosphate, and 300 pieces of cast stone powder. The initial coagulation time is 2117h and the final coagulation time is 5142h.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian