News Details
Anti - aging plastic antioxidant
2018-1-14 22:56:18
Anti - aging plastic antioxidant
It is one of the methods to improve the heat resistance, oxygen tolerance and light resistance of plastic materials. Anti-aging function is the basic function of anti-aging of general plastic material, and the anti-aging function is based on the basic function. The hindered ammonia stabilizer has good thermal and oxygen stability and function, especially the polymerized polymer blocked ammonia. The retarded ammonia stabilizer has good weathering stability for polyvinyl chloride.
In designing the stabilization system of anti-aging plastic antioxidant, it is necessary to consider the factors that weaken or inhibit the action of anti-aging plastics.
Determined by way of test or practical application of antioxidant system and antioxidant only under certain conditions can have certain effect, very slight variations in certain conditions, the effect of antioxidant and function can be affected by major; One of the main reasons why anti-aging plastic products fail to meet the requirements of anti-aging design is that there are local mechanical defects in the products. The quantity and quality of domestic antioxidants can meet the needs of domestic petrochemical industry and plastics industry.
Epoxidized soybean oil is only three epoxies more than soybean oil, but the plastication time of epoxides is only 2.2 minutes! It is five times more than the plasticized time of soybean oil! According to the analysis of the polarity of the general chemical structure, the polarity of the three epoxides is not as large as the three hydroxyl groups, but the effect of the plasticization on PVC is expected.
General auxiliary classification: outside the glycerol stearate is divided into three antioxidant of internal and external antioxidant, and triglyceride (- 12 - hydroxy stearic acid ester) and soybean oil as the internal and external antioxidant, and epoxidized soybean oil are all familiar with supplemental plasticizers. So according to the chemical structure of antioxidant molecules to infer its polarity, according to the polarity that it and the compatibility of PVC resin, according to the consistency judgment inside or outside the size of the antioxidant effect, the error of the big cans be imagined.
The complexity of the problem is not only that, more importantly, the stand or fall of antioxidant and the compatibility of resin or size, also affected by other conditions, especially the other antioxidants and plasticizer and other additives affect more pronounced (please see the detailed by the chemical industry publishing house "plastic additives, antioxidant and surface due to the limitation of space on the go").
In the formulation design, when the addition of antioxidant agent, no matter what equipment and processing technology requires specific internal and external anti-oxygen balance, it is necessary to continuously produce qualified products.
And antioxidant balance and varies with different processing equipment and process, and also is the mixture of PVC -u as heat and shearing force size and duration of the different requirements of different antioxidant balance. This creates the diversity of antioxidant balance, all this is caused by antioxidant effect theory to study the difficulty, in the actual formula design, also greatly increase the difficulty of antioxidant formula design.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is the main raw materials of phenol, phosphorus oxychloride, phosphorus trichloride, phosphorus oxychloride, phosphorus trichloride belong to highly toxic chemicals, state control chemicals. Through raw material phenol, triclosan phosphorous and trichloride phosphorus, the direct method of trichloro phosphorus is used to direct (also known as thermal) and the indirect method of trichloride phosphorus (also known as cold method).
According to the relevant state regulations, tppi is currently exported to 9 kinds of dangerous goods.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is mainly used in PVC, polyethylene, polypropylene, polystyrene, polyester, abs resin, epoxy resin, synthetic rubber antioxidant stabilizer, used in polyvinyl chloride (PVC) products as a chelating agent.
Therefore, the author believes that for pvc-u, the key of formula design is the proportion of internal and external antioxidants and the design of adding total amount.
Research methods of antioxidant balance. All the research methods of science and technology have their unique research methods, but from a methodological point of view, they can be divided into two categories:
The first is the analysis method, which mainly studies the microstructure and the relationship between them, such as the study of material molecules in physics, the structure of atoms and nuclei and the interaction between them. In the field of chemistry, the laws of electron transfer between the outer and outer layers of the molecules are studied, while western medicine analyzes the function and pathological changes of the human body in more subtle tissues through layers of dissection.
The second is the macroscopic research method, such as Newton's three laws, regardless of the objective material structure composition of the difference, only study the objective matter's motion rules. And macro method is the most used mathematics, it put aside all sorts of factors, the mechanism and the role relationship, mathematical model is established through the experiment, finally establish factors and mathematical expression of the final result, the mathematical equation.
For antioxidant balance design, we don't know inside and outside of antioxidants in the formula of actual strength of antioxidant effect, don't know other antioxidant and other additives on the antioxidant effect of the specific situation.
The simplest method, is to use only for the final results, regardless of its effect mechanism of macroscopic research method, which is considering factors (internal and external antioxidant and other additives) contribution to the final results (antioxidant) method, more way, namely whether internal and external how interactions between antioxidant and other additives and the influence of size, just see them against oxygen balance eventually comprehensive influence how the results of the method.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
It is one of the methods to improve the heat resistance, oxygen tolerance and light resistance of plastic materials. Anti-aging function is the basic function of anti-aging of general plastic material, and the anti-aging function is based on the basic function. The hindered ammonia stabilizer has good thermal and oxygen stability and function, especially the polymerized polymer blocked ammonia. The retarded ammonia stabilizer has good weathering stability for polyvinyl chloride.
In designing the stabilization system of anti-aging plastic antioxidant, it is necessary to consider the factors that weaken or inhibit the action of anti-aging plastics.
Determined by way of test or practical application of antioxidant system and antioxidant only under certain conditions can have certain effect, very slight variations in certain conditions, the effect of antioxidant and function can be affected by major; One of the main reasons why anti-aging plastic products fail to meet the requirements of anti-aging design is that there are local mechanical defects in the products. The quantity and quality of domestic antioxidants can meet the needs of domestic petrochemical industry and plastics industry.
Epoxidized soybean oil is only three epoxies more than soybean oil, but the plastication time of epoxides is only 2.2 minutes! It is five times more than the plasticized time of soybean oil! According to the analysis of the polarity of the general chemical structure, the polarity of the three epoxides is not as large as the three hydroxyl groups, but the effect of the plasticization on PVC is expected.
General auxiliary classification: outside the glycerol stearate is divided into three antioxidant of internal and external antioxidant, and triglyceride (- 12 - hydroxy stearic acid ester) and soybean oil as the internal and external antioxidant, and epoxidized soybean oil are all familiar with supplemental plasticizers. So according to the chemical structure of antioxidant molecules to infer its polarity, according to the polarity that it and the compatibility of PVC resin, according to the consistency judgment inside or outside the size of the antioxidant effect, the error of the big cans be imagined.
The complexity of the problem is not only that, more importantly, the stand or fall of antioxidant and the compatibility of resin or size, also affected by other conditions, especially the other antioxidants and plasticizer and other additives affect more pronounced (please see the detailed by the chemical industry publishing house "plastic additives, antioxidant and surface due to the limitation of space on the go").
In the formulation design, when the addition of antioxidant agent, no matter what equipment and processing technology requires specific internal and external anti-oxygen balance, it is necessary to continuously produce qualified products.
And antioxidant balance and varies with different processing equipment and process, and also is the mixture of PVC -u as heat and shearing force size and duration of the different requirements of different antioxidant balance. This creates the diversity of antioxidant balance, all this is caused by antioxidant effect theory to study the difficulty, in the actual formula design, also greatly increase the difficulty of antioxidant formula design.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is the main raw materials of phenol, phosphorus oxychloride, phosphorus trichloride, phosphorus oxychloride, phosphorus trichloride belong to highly toxic chemicals, state control chemicals. Through raw material phenol, triclosan phosphorous and trichloride phosphorus, the direct method of trichloro phosphorus is used to direct (also known as thermal) and the indirect method of trichloride phosphorus (also known as cold method).
According to the relevant state regulations, tppi is currently exported to 9 kinds of dangerous goods.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is mainly used in PVC, polyethylene, polypropylene, polystyrene, polyester, abs resin, epoxy resin, synthetic rubber antioxidant stabilizer, used in polyvinyl chloride (PVC) products as a chelating agent.
Therefore, the author believes that for pvc-u, the key of formula design is the proportion of internal and external antioxidants and the design of adding total amount.
Research methods of antioxidant balance. All the research methods of science and technology have their unique research methods, but from a methodological point of view, they can be divided into two categories:
The first is the analysis method, which mainly studies the microstructure and the relationship between them, such as the study of material molecules in physics, the structure of atoms and nuclei and the interaction between them. In the field of chemistry, the laws of electron transfer between the outer and outer layers of the molecules are studied, while western medicine analyzes the function and pathological changes of the human body in more subtle tissues through layers of dissection.
The second is the macroscopic research method, such as Newton's three laws, regardless of the objective material structure composition of the difference, only study the objective matter's motion rules. And macro method is the most used mathematics, it put aside all sorts of factors, the mechanism and the role relationship, mathematical model is established through the experiment, finally establish factors and mathematical expression of the final result, the mathematical equation.
For antioxidant balance design, we don't know inside and outside of antioxidants in the formula of actual strength of antioxidant effect, don't know other antioxidant and other additives on the antioxidant effect of the specific situation.
The simplest method, is to use only for the final results, regardless of its effect mechanism of macroscopic research method, which is considering factors (internal and external antioxidant and other additives) contribution to the final results (antioxidant) method, more way, namely whether internal and external how interactions between antioxidant and other additives and the influence of size, just see them against oxygen balance eventually comprehensive influence how the results of the method.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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