News Details
PVC tape flame retardant
2017-11-5 22:57:45
PVC tape flame retardant
At present, the main application fields of flame retardant pressure-sensitive adhesives in China are in the field of electrical insulation adhesive tape. Flame retardant PVC tape due to the addition of many additives, especially PVC flame retardant tape, affects its breakdown strength; and PVC combustion will produce dioxin, and black smoke when burning is serious, in some countries and areas of its use is limited.
Flame retardant adhesive development in recent years is mainly through the PVC tape flame retardant agent is added to the acrylic pressure-sensitive adhesive, and then the flame retardant pressure-sensitive adhesive coating to the surface of PVC film (such as BOPET), the film in the sensing at the same time, also has the flame retardant performance, can replace the traditional in a flame retardant PVC tape in some areas.
The technical requirements of flame retardant pressure-sensitive adhesive for PVC tape flame retardant are generally obtained by testing flame retardant tape. The flame retardant performance of PVC tape flame retardant is generally tested by vertical burning test of flame retardant adhesive tape to determine whether the flame retardant is qualified.
Chinese pressure-sensitive adhesive tape vertical burning used standard: GB/T20631.2-2006 "electrical pressure sensitive adhesive tape for test method", has 6 250mm? 25mm spline vertically into the test equipment, keep the end paste with filter paper down. Then light the filter paper, once the filter paper is ignited, remove the fire source immediately until the flame is extinguished automatically.
Judging standard: A. combustion length is less than 100mm. B. has at least 5 splines to meet the requirements.
In contrast, GB/T15903-1995 "pressure sensitive tape test method of combustion suspension method" can be subdivided into different flame retardant grades, is also often adopted. The samples and test methods are similar to those of GB/T20631.2-2006, but the criteria are different. See table 1. Table 1GB/T15903-1995 evaluation standard of tape fire resistance grade
Some people use the UL510-2005 "PVC, polyolefin and a rubber insulating tape test standard" in flame retardant test, flame retardant flame retardant tape will test the iron bar, lit after the test repeated burning time (UL standard is burning through 60 seconds).
The production process of flame retardant pressure-sensitive adhesive is in solution by adding a certain amount of high-speed dispersion machine, the first all sorts of toner and flame retardant pre dispersed in solution, and then avoid the reunion, mixed with a binder, a screen mesh, then the tape used to surface coating, finally finished rolling.
Therefore, the dispersibility and particle size of flame retardants have a great influence on the quality of the products. If the flame retardant is easy to agglomerate and not easy to disperse, it will directly lead to many particles on the screen, low production efficiency, uneven appearance and poor flame retardant effect. The particle size of flame retardant is too large, which is more likely to occur.
Generally speaking, for PVC tape flame retardant, particle size control at 1-5 m is more appropriate. The particle size is too large to be prone to problems, and the particle size is too small, because of agglomeration and dispersion problems, but also not conducive to product applications. As for the surface treatment of flame retardant, it has certain compatibility with the resin system, and it is also one of the means to disperse.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
CAS No.:13674-87-8
HS: 29199000
Tax Rate (%): 9%
Tris (1,3-Dichloro-2-Propyl) Phosphate (TDCPP) Raw Materials: Phosphorus Oxychloride, Epichlorohydrin
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP) Use:
The Product Has A High Efficiency Flame Retardant, Low Volatility, High Thermal Stability, Water Resistance, Alkali Stable And Soluble In Most Organic Substances, Processing Performance, With Plastic, Moisture, Anti-Static, Anti-Pull, Anti-Compression Performance. Widely Used In Unsaturated Polyester, Polyurethane Foam, Epoxy Resin, Phenolic Resin, Rubber, Soft Polyvinyl Chloride, Synthetic Fibers And Other Plastics And Coatings At High Temperature Pyrolysis, Can Be Used As Emulsifier And Explosion-Proof Agent.
Generally, the influence of flame retardant on the electrical properties of pressure sensitive adhesive is investigated by testing the breakdown voltage. The test standard is GB/T14517-1993 "test method for power frequency withstand voltage of insulated tapes"
For different application requirements, the required breakdown voltage is different, such as: electrical tape for horse drawn tape required breakdown voltage is generally more than 5KV. For flame retardants, the electric breakdown strength of the adhesive tape should not be obviously reduced, otherwise it is not available.
The adhesive properties of pressure-sensitive adhesives are not affected. For flame retardant pressure-sensitive adhesives, the effects of flame retardants on the properties of pressure-sensitive adhesives are also investigated by testing the initial adhesive strength, peel strength and holding property.
It is required that the added flame retardant will not cause the reaction or crosslinking of the molecular structure of the pressure-sensitive adhesive. Therefore, for some acrylate pressure-sensitive adhesives, some polyvalent metal salt ions and reactive functional groups can not be added.
Storage stability of pressure-sensitive adhesives is not affected. Due to the use of flame retardant is often powder, it is required in a certain period of time, the flame retardant precipitation resistance is better, before coating can not be layered.
But for some emulsion pressure sensitive adhesive system, here not only refers to the settlement of the flame retardant itself, but also consider due to the addition of flame retardant, the formation of demulsification precipitation.
Brominated flame retardants mainly refer to a series of flame retardant products containing bromine in the structure. Because of the flame retardant mechanism, the general brominated flame retardants are not used alone, and the flame retardant synergistic agents such as three antimony oxide and two antimony oxide should be used in conjunction. At present, the brominated flame retardants used in flame retardant pressure-sensitive adhesives are mainly composed of ten brominated diphenyl ethers (or ten bromo two phenyl ethane) and three antimony oxide two, and the content of flame retardants in solid components is more than 35%.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
At present, the main application fields of flame retardant pressure-sensitive adhesives in China are in the field of electrical insulation adhesive tape. Flame retardant PVC tape due to the addition of many additives, especially PVC flame retardant tape, affects its breakdown strength; and PVC combustion will produce dioxin, and black smoke when burning is serious, in some countries and areas of its use is limited.
Flame retardant adhesive development in recent years is mainly through the PVC tape flame retardant agent is added to the acrylic pressure-sensitive adhesive, and then the flame retardant pressure-sensitive adhesive coating to the surface of PVC film (such as BOPET), the film in the sensing at the same time, also has the flame retardant performance, can replace the traditional in a flame retardant PVC tape in some areas.
The technical requirements of flame retardant pressure-sensitive adhesive for PVC tape flame retardant are generally obtained by testing flame retardant tape. The flame retardant performance of PVC tape flame retardant is generally tested by vertical burning test of flame retardant adhesive tape to determine whether the flame retardant is qualified.
Chinese pressure-sensitive adhesive tape vertical burning used standard: GB/T20631.2-2006 "electrical pressure sensitive adhesive tape for test method", has 6 250mm? 25mm spline vertically into the test equipment, keep the end paste with filter paper down. Then light the filter paper, once the filter paper is ignited, remove the fire source immediately until the flame is extinguished automatically.
Judging standard: A. combustion length is less than 100mm. B. has at least 5 splines to meet the requirements.
In contrast, GB/T15903-1995 "pressure sensitive tape test method of combustion suspension method" can be subdivided into different flame retardant grades, is also often adopted. The samples and test methods are similar to those of GB/T20631.2-2006, but the criteria are different. See table 1. Table 1GB/T15903-1995 evaluation standard of tape fire resistance grade
Some people use the UL510-2005 "PVC, polyolefin and a rubber insulating tape test standard" in flame retardant test, flame retardant flame retardant tape will test the iron bar, lit after the test repeated burning time (UL standard is burning through 60 seconds).
The production process of flame retardant pressure-sensitive adhesive is in solution by adding a certain amount of high-speed dispersion machine, the first all sorts of toner and flame retardant pre dispersed in solution, and then avoid the reunion, mixed with a binder, a screen mesh, then the tape used to surface coating, finally finished rolling.
Therefore, the dispersibility and particle size of flame retardants have a great influence on the quality of the products. If the flame retardant is easy to agglomerate and not easy to disperse, it will directly lead to many particles on the screen, low production efficiency, uneven appearance and poor flame retardant effect. The particle size of flame retardant is too large, which is more likely to occur.
Generally speaking, for PVC tape flame retardant, particle size control at 1-5 m is more appropriate. The particle size is too large to be prone to problems, and the particle size is too small, because of agglomeration and dispersion problems, but also not conducive to product applications. As for the surface treatment of flame retardant, it has certain compatibility with the resin system, and it is also one of the means to disperse.
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP)
CAS No.:13674-87-8
HS: 29199000
Tax Rate (%): 9%
Tris (1,3-Dichloro-2-Propyl) Phosphate (TDCPP) Raw Materials: Phosphorus Oxychloride, Epichlorohydrin
Tris (1,3-Dichloro-2-Propyl) Phosphate (Flame Retardant TDCPP) Use:
The Product Has A High Efficiency Flame Retardant, Low Volatility, High Thermal Stability, Water Resistance, Alkali Stable And Soluble In Most Organic Substances, Processing Performance, With Plastic, Moisture, Anti-Static, Anti-Pull, Anti-Compression Performance. Widely Used In Unsaturated Polyester, Polyurethane Foam, Epoxy Resin, Phenolic Resin, Rubber, Soft Polyvinyl Chloride, Synthetic Fibers And Other Plastics And Coatings At High Temperature Pyrolysis, Can Be Used As Emulsifier And Explosion-Proof Agent.
Generally, the influence of flame retardant on the electrical properties of pressure sensitive adhesive is investigated by testing the breakdown voltage. The test standard is GB/T14517-1993 "test method for power frequency withstand voltage of insulated tapes"
For different application requirements, the required breakdown voltage is different, such as: electrical tape for horse drawn tape required breakdown voltage is generally more than 5KV. For flame retardants, the electric breakdown strength of the adhesive tape should not be obviously reduced, otherwise it is not available.
The adhesive properties of pressure-sensitive adhesives are not affected. For flame retardant pressure-sensitive adhesives, the effects of flame retardants on the properties of pressure-sensitive adhesives are also investigated by testing the initial adhesive strength, peel strength and holding property.
It is required that the added flame retardant will not cause the reaction or crosslinking of the molecular structure of the pressure-sensitive adhesive. Therefore, for some acrylate pressure-sensitive adhesives, some polyvalent metal salt ions and reactive functional groups can not be added.
Storage stability of pressure-sensitive adhesives is not affected. Due to the use of flame retardant is often powder, it is required in a certain period of time, the flame retardant precipitation resistance is better, before coating can not be layered.
But for some emulsion pressure sensitive adhesive system, here not only refers to the settlement of the flame retardant itself, but also consider due to the addition of flame retardant, the formation of demulsification precipitation.
Brominated flame retardants mainly refer to a series of flame retardant products containing bromine in the structure. Because of the flame retardant mechanism, the general brominated flame retardants are not used alone, and the flame retardant synergistic agents such as three antimony oxide and two antimony oxide should be used in conjunction. At present, the brominated flame retardants used in flame retardant pressure-sensitive adhesives are mainly composed of ten brominated diphenyl ethers (or ten bromo two phenyl ethane) and three antimony oxide two, and the content of flame retardants in solid components is more than 35%.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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