News Details
Compatibility of antioxidants
2018-1-15 12:08:53
Compatibility of antioxidants
This paper introduces the compatibility of antioxidants. The compatibility of antioxidants is reflected in the compatibility between the antioxidant and the matrix resin and the synergistic effect of the other components in the matrix resin. Understanding the compatibility of antioxidants is very helpful in the research and development of antioxidant.
(1) compatibility between antioxidant and matrix resin. The ideal situation is that there is good compatibility between the two. Poor compatibility in processing applications will result in the removal of antioxidant agents, product surface spray and stable performance. On the other hand, the solubility of antioxidants in aqueous solutions should be minimized so as to avoid environmental extraction and reduce the antioxidant efficiency and environmental pollution.
(2) synergistic effect of amine/phenol. The active amine free radicals can produce peroxide, and the active amine can be regenerated from quinone. As a reducing agent, phenol can exist in the form of quinone dimer in the form of REDOX system, and can be further reflected in the presence of colored bodies. The compound produced by the reaction can quench other free radicals at any time.
(3) the antagonistic effect of zhongfang amine/carbon black. When it was added to the matrix resin containing carbon black additives, the carbon black surface had catalytic oxidation effect on the anti-oxidant of zhongfang amine, which produced the so-called antagonistic effect.
(4) the cooperation system of hindered phenol and sulfur ether antioxidants. The inhibition of phenol and thioether antioxidants is a widely used cooperative system, especially the presence of the antioxygenation agent of the semi-hindered phenolic structure, which further enhances the synergistic effect of this antioxidant system.
(5) coordination system of antioxidant and light stabilizer. It has excellent synergistic stability effect with fHALS. In the process of stabilization, thioether antioxidant can produce acidic components, which can inhibit the stability of HALS, and such research has not yet formed a theory.
Resin usually refers to the softening or melting range after the heat is heated. When softened, it has a tendency to flow under external forces. At normal temperature, it is solid, semi-solid, and sometimes it can be a liquid organic polymer. Broadly speaking, any polymer compound that can be used as a raw material for plastic products is called resin.
The relative molecular weight is uncertain but is usually higher, at room temperature, solid, medium solid, pseudo solid, and sometimes liquid organic matter. With the softening or melting temperature range, there is a tendency to flow under external forces, and the rupture is often a shell. Broadly defined as a polymer or prepolymer used as a plastic substrate. Generally insoluble in water, soluble in organic solvents. The source can be divided into natural resin and synthetic resin; According to the characteristics of different processing behavior, thermoplastic resin and thermosetting resin are respectively.
DOWEX resin is an inseparable and uniform mixing resin. The low PPB level of silicon, boron, sodium, potassium, sulfate, chloride, zinc, iron and aluminum ions is realized in the non-regenerative mixing bed in the ultra-pure water polishing treatment stage. This kind of non - regenerative mixer can be used for 2-3 years before replacement. The UPW grade resin has a high ionic conversion rate (95% minimum), excellent conductivity and TOC cleaning properties and super compressive strength. Because it is a mixture of 360 micron and 590 microns, it maintains efficient dynamic performance and high running exchange capacity.
Resin has natural resin and synthetic resin. Natural resins are amorphous organic substances derived from animal and plant secretions in nature, such as rosin, amber, shellac, etc. Synthetic resin is to point to by some simple organic compounds by chemical synthesis or natural products by the reaction of a chemical resin products, such as phenolic resin, PVC resin, etc., the plastic is the main component of synthetic resin.
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.
The resin can be divided into polymers and polycondensation by synthesis reaction. A polymer is a polymer that is made from a polymerized reaction, and the chemical formula of the link structure is the same as that of a monomer, such as polyethylene, polystyrene, polytetrafluoroethylene, etc.
Polycondensation is a polymer which is produced by condensation polymerization. The chemical formula of the structure unit is different from that of monomer, such as phenolic resin, polyester resin, polyamide resin, etc.
The resin can be divided into carbon chain polymer, heterochain polymer and element organic polymer by molecular main chain.
A carbon chain polymer is a polymer made of carbon atoms, such as polyethylene and polystyrene.
Heterochain polymer is a polymer composed of two or more atoms of carbon and oxygen, nitrogen and sulfur, such as polyformaldehyde, polyamide, polysulfone, polyether and so on.
The organic polymer of an element means that the main chain does not contain carbon atoms, and is mainly composed of atoms of silicon, oxygen, aluminum, titanium, boron, sulfur and phosphorus, such as organic silicon.
Thermosetting resins (such resins are commonly used in glass steel) : unsaturated polyester/vinyl ester/epoxy/phenolic/bismaleimide (BMI)/polyimide resin, etc.
Thermoplastic resin: polypropylene (PP)/polycarbonate (PC)/NYLON (NYLON)/polyether ketone (PEEK)/polyether sulfone (PES), etc.
Synthetic resin is a kind of synthetic polymer. The most important application of synthetic resins is to make plastics. In order to facilitate the processing and improvement of performance, additives are often added, and sometimes used directly for processing forming, which is often the synonym of plastic. Synthetic resin is also the basic raw material for making synthetic fibers, coatings, adhesives and insulating materials. There are many different kinds of synthetic resin, polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), polypropylene (PP) and ABS resin for the five general resin, is the most widely used synthetic resin material.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
This paper introduces the compatibility of antioxidants. The compatibility of antioxidants is reflected in the compatibility between the antioxidant and the matrix resin and the synergistic effect of the other components in the matrix resin. Understanding the compatibility of antioxidants is very helpful in the research and development of antioxidant.
(1) compatibility between antioxidant and matrix resin. The ideal situation is that there is good compatibility between the two. Poor compatibility in processing applications will result in the removal of antioxidant agents, product surface spray and stable performance. On the other hand, the solubility of antioxidants in aqueous solutions should be minimized so as to avoid environmental extraction and reduce the antioxidant efficiency and environmental pollution.
(2) synergistic effect of amine/phenol. The active amine free radicals can produce peroxide, and the active amine can be regenerated from quinone. As a reducing agent, phenol can exist in the form of quinone dimer in the form of REDOX system, and can be further reflected in the presence of colored bodies. The compound produced by the reaction can quench other free radicals at any time.
(3) the antagonistic effect of zhongfang amine/carbon black. When it was added to the matrix resin containing carbon black additives, the carbon black surface had catalytic oxidation effect on the anti-oxidant of zhongfang amine, which produced the so-called antagonistic effect.
(4) the cooperation system of hindered phenol and sulfur ether antioxidants. The inhibition of phenol and thioether antioxidants is a widely used cooperative system, especially the presence of the antioxygenation agent of the semi-hindered phenolic structure, which further enhances the synergistic effect of this antioxidant system.
(5) coordination system of antioxidant and light stabilizer. It has excellent synergistic stability effect with fHALS. In the process of stabilization, thioether antioxidant can produce acidic components, which can inhibit the stability of HALS, and such research has not yet formed a theory.
Resin usually refers to the softening or melting range after the heat is heated. When softened, it has a tendency to flow under external forces. At normal temperature, it is solid, semi-solid, and sometimes it can be a liquid organic polymer. Broadly speaking, any polymer compound that can be used as a raw material for plastic products is called resin.
The relative molecular weight is uncertain but is usually higher, at room temperature, solid, medium solid, pseudo solid, and sometimes liquid organic matter. With the softening or melting temperature range, there is a tendency to flow under external forces, and the rupture is often a shell. Broadly defined as a polymer or prepolymer used as a plastic substrate. Generally insoluble in water, soluble in organic solvents. The source can be divided into natural resin and synthetic resin; According to the characteristics of different processing behavior, thermoplastic resin and thermosetting resin are respectively.
DOWEX resin is an inseparable and uniform mixing resin. The low PPB level of silicon, boron, sodium, potassium, sulfate, chloride, zinc, iron and aluminum ions is realized in the non-regenerative mixing bed in the ultra-pure water polishing treatment stage. This kind of non - regenerative mixer can be used for 2-3 years before replacement. The UPW grade resin has a high ionic conversion rate (95% minimum), excellent conductivity and TOC cleaning properties and super compressive strength. Because it is a mixture of 360 micron and 590 microns, it maintains efficient dynamic performance and high running exchange capacity.
Resin has natural resin and synthetic resin. Natural resins are amorphous organic substances derived from animal and plant secretions in nature, such as rosin, amber, shellac, etc. Synthetic resin is to point to by some simple organic compounds by chemical synthesis or natural products by the reaction of a chemical resin products, such as phenolic resin, PVC resin, etc., the plastic is the main component of synthetic resin.
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.
The resin can be divided into polymers and polycondensation by synthesis reaction. A polymer is a polymer that is made from a polymerized reaction, and the chemical formula of the link structure is the same as that of a monomer, such as polyethylene, polystyrene, polytetrafluoroethylene, etc.
Polycondensation is a polymer which is produced by condensation polymerization. The chemical formula of the structure unit is different from that of monomer, such as phenolic resin, polyester resin, polyamide resin, etc.
The resin can be divided into carbon chain polymer, heterochain polymer and element organic polymer by molecular main chain.
A carbon chain polymer is a polymer made of carbon atoms, such as polyethylene and polystyrene.
Heterochain polymer is a polymer composed of two or more atoms of carbon and oxygen, nitrogen and sulfur, such as polyformaldehyde, polyamide, polysulfone, polyether and so on.
The organic polymer of an element means that the main chain does not contain carbon atoms, and is mainly composed of atoms of silicon, oxygen, aluminum, titanium, boron, sulfur and phosphorus, such as organic silicon.
Thermosetting resins (such resins are commonly used in glass steel) : unsaturated polyester/vinyl ester/epoxy/phenolic/bismaleimide (BMI)/polyimide resin, etc.
Thermoplastic resin: polypropylene (PP)/polycarbonate (PC)/NYLON (NYLON)/polyether ketone (PEEK)/polyether sulfone (PES), etc.
Synthetic resin is a kind of synthetic polymer. The most important application of synthetic resins is to make plastics. In order to facilitate the processing and improvement of performance, additives are often added, and sometimes used directly for processing forming, which is often the synonym of plastic. Synthetic resin is also the basic raw material for making synthetic fibers, coatings, adhesives and insulating materials. There are many different kinds of synthetic resin, polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), polypropylene (PP) and ABS resin for the five general resin, is the most widely used synthetic resin material.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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