The curing temperature of various curing agents is different, and the heat resistance of curing is also very different. Generally speaking, a curing agent with a high curing temperature can obtain excellent thermal resistance. For the bonus polymerization curing agent, the curing temperature and heat resistance are increased according to the following order: The lipolytic polysine \u003c对于 对于 芳 \u003ccretedamine phenolin \u003cacid anhydride catalyzed polymerization agent The heat resistance is generally at the aromatic pads. The thermal resistance of the anion polymerization (uncle and imidazole), cationic polymerization (BF3 complex) is basically the same. This is mainly because the initial response mechanism is different, but in the end, the mesh of a combination of ether bonds is formed. structure. The curing reaction belongs to the chemical reaction, which is greatly affected by the curing temperature, the temperature increases, the response speed is accelerated, and the gel time becomes shorter. However, the curing temperature is too high, which often reduces the performance of curing, so there is an upper limit of the curing temperature; the temperature that is compromised by the concentrated temperature of the curing speed and the performance of curing must be selected as the appropriate curing temperature. The curing agent can be divided into four categories according to the curing temperature: the curing temperature of the low -temperature curing agent is below the room temperature; the curing temperature of the room temperature curing agent is the room temperature ~ 50 ° C; Essence There are very few varieties of curing agents that are low-temperature curing types, including polymel alcohol type, polytychenate type, etc.; In recent years, the T-31 modifiers and YH-82 modifiers developed in China can be cured below 0 ° C. There are many types of room temperature curing types: aliphed polysine, fat rings polyamide; low -molecular polyamide, and modified aromators. Some of the medium -temperature curing types have some depirathoin, uncle, squintazole, and trifluoride compounds. It belongs to high -temperature curing agents including aromatic padamine, acid anhydride, tidal phenolic resin, amino resin, bishalamine, and nicomyl. For the high temperature curing system, the curing temperature is generally divided into two stages. In front of the gel, low-temperature curing is used. After reaching the state of gel state or a slightly higher state than gel state, then high temperature heating ), Relative to pre-curing (pre-cure).
The curing temperature of various curing agents is different, and the heat resistance of curing is also very different. Generally speaking, a curing agent with a high curing temperature can obtain excellent thermal resistance. For the bonus polymerization curing agent, the curing temperature and heat resistance are increased according to the following order: The lipolytic polysine \u003c对于 对于 芳 \u003ccretedamine phenolin \u003cacid anhydride catalyzed polymerization agent The heat resistance is generally at the aromatic pads. The thermal resistance of the anion polymerization (uncle and imidazole), cationic polymerization (BF3 complex) is basically the same. This is mainly because the initial response mechanism is different, but in the end, the mesh of a combination of ether bonds is formed. structure. The curing reaction belongs to the chemical reaction, which is greatly affected by the curing temperature, the temperature increases, the response speed is accelerated, and the gel time becomes shorter. However, the curing temperature is too high, which often reduces the performance of curing, so there is an upper limit of the curing temperature; the temperature that is compromised by the concentrated temperature of the curing speed and the performance of curing must be selected as the appropriate curing temperature. The curing agent can be divided into four categories according to the curing temperature: the curing temperature of the low -temperature curing agent is below the room temperature; the curing temperature of the room temperature curing agent is the room temperature ~ 50 ° C; Essence There are very few varieties of curing agents that are low-temperature curing types, including polymel alcohol type, polytychenate type, etc.; In recent years, the T-31 modifiers and YH-82 modifiers developed in China can be cured below 0 ° C. There are many types of room temperature curing types: aliphed polysine, fat rings polyamide; low -molecular polyamide, and modified aromators. Some of the medium -temperature curing types have some depirathoin, uncle, squintazole, and trifluoride compounds. It belongs to high -temperature curing agents including aromatic padamine, acid anhydride, tidal phenolic resin, amino resin, bishalamine, and nicomyl. For the high temperature curing system, the curing temperature is generally divided into two stages. In front of the gel, low-temperature curing is used. After reaching the state of gel state or a slightly higher state than gel state, then high temperature heating ), Relative to pre-curing (pre-cure).
It seems that your situation is that other chemical reactions have occurred in the curing agent, which has been degenerated and cannot be completely cured. Some curing agents, such as amine and acidic anhydrials, if the moisture absorption or carbon dioxide in the air, it is basically difficult to continue curing epoxy resin. In this case, you need to choose a more suitable curing agent.
It seems that your situation is that other chemical reactions have occurred in the curing agent, which has been degenerated and cannot be completely cured. Some curing agents, such as amine and acidic anhydrials, if the moisture absorption or carbon dioxide in the air, it is basically difficult to continue curing epoxy resin. In this case, you need to choose a more suitable curing agent.
Totoethylene is added more?This small molecular amine should be solidified quickly, especially it is heated. What is your proportion?What epoxy do you use?How much is heating temperature?
Totoethylene is added more?This small molecular amine should be solidified quickly, especially it is heated. What is your proportion?What epoxy do you use?How much is heating temperature?
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The lipolytic polysine \u003c对于 对于 芳 \u003ccretedamine phenolin \u003cacid anhydride
catalyzed polymerization agent The heat resistance is generally at the aromatic pads. The thermal resistance of the anion polymerization (uncle and imidazole), cationic polymerization (BF3 complex) is basically the same. This is mainly because the initial response mechanism is different, but in the end, the mesh of a combination of ether bonds is formed. structure.
The curing reaction belongs to the chemical reaction, which is greatly affected by the curing temperature, the temperature increases, the response speed is accelerated, and the gel time becomes shorter. However, the curing temperature is too high, which often reduces the performance of curing, so there is an upper limit of the curing temperature; the temperature that is compromised by the concentrated temperature of the curing speed and the performance of curing must be selected as the appropriate curing temperature. The curing agent can be divided into four categories according to the curing temperature: the curing temperature of the low -temperature curing agent is below the room temperature; the curing temperature of the room temperature curing agent is the room temperature ~ 50 ° C; Essence There are very few varieties of curing agents that are low-temperature curing types, including polymel alcohol type, polytychenate type, etc.; In recent years, the T-31 modifiers and YH-82 modifiers developed in China can be cured below 0 ° C. There are many types of room temperature curing types: aliphed polysine, fat rings polyamide; low -molecular polyamide, and modified aromators. Some of the medium -temperature curing types have some depirathoin, uncle, squintazole, and trifluoride compounds. It belongs to high -temperature curing agents including aromatic padamine, acid anhydride, tidal phenolic resin, amino resin, bishalamine, and nicomyl.
For the high temperature curing system, the curing temperature is generally divided into two stages. In front of the gel, low-temperature curing is used. After reaching the state of gel state or a slightly higher state than gel state, then high temperature heating ), Relative to pre-curing (pre-cure).
The lipolytic polysine \u003c对于 对于 芳 \u003ccretedamine phenolin \u003cacid anhydride
catalyzed polymerization agent The heat resistance is generally at the aromatic pads. The thermal resistance of the anion polymerization (uncle and imidazole), cationic polymerization (BF3 complex) is basically the same. This is mainly because the initial response mechanism is different, but in the end, the mesh of a combination of ether bonds is formed. structure.
The curing reaction belongs to the chemical reaction, which is greatly affected by the curing temperature, the temperature increases, the response speed is accelerated, and the gel time becomes shorter. However, the curing temperature is too high, which often reduces the performance of curing, so there is an upper limit of the curing temperature; the temperature that is compromised by the concentrated temperature of the curing speed and the performance of curing must be selected as the appropriate curing temperature. The curing agent can be divided into four categories according to the curing temperature: the curing temperature of the low -temperature curing agent is below the room temperature; the curing temperature of the room temperature curing agent is the room temperature ~ 50 ° C; Essence There are very few varieties of curing agents that are low-temperature curing types, including polymel alcohol type, polytychenate type, etc.; In recent years, the T-31 modifiers and YH-82 modifiers developed in China can be cured below 0 ° C. There are many types of room temperature curing types: aliphed polysine, fat rings polyamide; low -molecular polyamide, and modified aromators. Some of the medium -temperature curing types have some depirathoin, uncle, squintazole, and trifluoride compounds. It belongs to high -temperature curing agents including aromatic padamine, acid anhydride, tidal phenolic resin, amino resin, bishalamine, and nicomyl.
For the high temperature curing system, the curing temperature is generally divided into two stages. In front of the gel, low-temperature curing is used. After reaching the state of gel state or a slightly higher state than gel state, then high temperature heating ), Relative to pre-curing (pre-cure).
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Some curing agents, such as amine and acidic anhydrials, if the moisture absorption or carbon dioxide in the air, it is basically difficult to continue curing epoxy resin.
In this case, you need to choose a more suitable curing agent.
Some curing agents, such as amine and acidic anhydrials, if the moisture absorption or carbon dioxide in the air, it is basically difficult to continue curing epoxy resin.
In this case, you need to choose a more suitable curing agent.
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It is best to calculate the proportion first
It is best to wear a mask with amine
It is best to calculate the proportion first
It is best to wear a mask with amine
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