News Details
Cross linking agent crosslinking method
2017-5-22 23:51:59
Cross linking agent crosslinking method
Chemical crosslinking of PVC chemical crosslinking modification of PVC also has a variety of methods, the use of crosslinking agent for more sulfur-containing organic compounds, such as sulphur ester 043, 2 thiol compounds, etc., and sulfur, sodium sulfide and other minerals; The solvents are DMF, liquid ammonia, and ethylenediamine (EN).
The methods of cross-linking of PVC crosslinking, radiating crosslinking, silicon, and dimercap-triazine compound, copolymerization/grafting, etc.
Radiation crosslinking method than other crosslinking efficiency is high, the process conditions are easy to control, combined with extrusion process and the characteristics of separate crosslinking process, makes the radiation crosslinking methods widely used.
Radiation crosslinking of PVC polymer radiation crosslinking, so-called polymer is to put in radiation field, such as X-ray, electron beam under the action of high energy ray, triggered a series of polymer chemistry, inside the polymers to form crosslinked network structure.
As shown. Radiation dose is one of the factors influencing the crosslinking efficiency significantly, general with the increase of radiation dose, crosslinking efficiency, gel content increased, polymers, crosslinking density increases. But too large a dose of radiation can cause radiation levels to have a negative effect. The application of specific PVC radiation crosslinking materials can be divided into the following aspects.
Wire and cable. The PVC material has the advantages of high heat resistance, solvent resistance, aging resistance, low heat deformation, wear resistance, power resistance and high mechanical strength.
The insulation and sheath materials of wire cables are widely used. Such as soft PVC insulated wire, PVC sheathed cable insulation, electrical equipment with PVC insulation wire, high voltage crosslinked cable, star type/to wring type PVC insulated PVC sheathed communication cable, etc.
PVC cable has some excellent properties, radiation can be instead of more expensive teflon cable, used in some special occasions, such as exhaust fan, air conditioner, automobile engine gear, etc. And crosslinking, controlling the temperature of 170 ~ 180 ℃, screw length to diameter ratio with 35 advisable. The polyethylene can be used for thermoplastic processing and improves the performance of polyethylene.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
The crosslinking of polyolefin is modified
Heat shrinkable material. The PVC is properly formulated and can be heated by the radiation crosslinking system, which can be used to heat shrinkable materials such as heat shrink wrap film and heat shrink sleeve. In addition, by adding reactive unsaturated plasticizers in PVC processing aid and transparent, can be made of non-toxic transparent heat shrinkable packaging materials, used in food packaging and high-grade goods.
The medicinal materials. PVC radiation technology has packed file a separate process and cross-linking process, the characteristics of radiation crosslinking method can be used only on certain parts of the radiation products radiation, in order to meet the performance requirements of different parts, such as selection of crosslinking agent, plasticizer, use appropriate doses can make PVC chemical oxide content, pH value of performance index and so on to meet medical requirements. As the current medical treatment in coronary artery catheter balloon expansion, requirements on longitudinal have hardness change, namely the former part of the soft [shaw hardness is 70 ~ 76 (A)], part after A hard [shaw hardness is 90 ~ 96 (A)], adopt the radiation crosslinking easy to determine the appropriate process.
Building materials. Although the plastic bottle market has been replaced by the majority of PET bottles, the main market share of pipes and doors and Windows is growing faster than wood and aluminum.
Radiation crosslinking modification more expand the application range of PVC material, radiation crosslinking of PVC material has excellent dimensional stability, flame retardancy, abrasion resistance and resistance to chemical solvent, especially suitable for making good flooring, wallpaper and other building decoration materials. By radiation crosslinking floor tile, flame retardant, resistance to chemical corrosion, and the advantages of small thermal deformation, the absorption of cigarette butts thrown on the floor, step out can be swept away after, without a trace.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Chemical crosslinking of PVC chemical crosslinking modification of PVC also has a variety of methods, the use of crosslinking agent for more sulfur-containing organic compounds, such as sulphur ester 043, 2 thiol compounds, etc., and sulfur, sodium sulfide and other minerals; The solvents are DMF, liquid ammonia, and ethylenediamine (EN).
The methods of cross-linking of PVC crosslinking, radiating crosslinking, silicon, and dimercap-triazine compound, copolymerization/grafting, etc.
Radiation crosslinking method than other crosslinking efficiency is high, the process conditions are easy to control, combined with extrusion process and the characteristics of separate crosslinking process, makes the radiation crosslinking methods widely used.
Radiation crosslinking of PVC polymer radiation crosslinking, so-called polymer is to put in radiation field, such as X-ray, electron beam under the action of high energy ray, triggered a series of polymer chemistry, inside the polymers to form crosslinked network structure.
As shown. Radiation dose is one of the factors influencing the crosslinking efficiency significantly, general with the increase of radiation dose, crosslinking efficiency, gel content increased, polymers, crosslinking density increases. But too large a dose of radiation can cause radiation levels to have a negative effect. The application of specific PVC radiation crosslinking materials can be divided into the following aspects.
Wire and cable. The PVC material has the advantages of high heat resistance, solvent resistance, aging resistance, low heat deformation, wear resistance, power resistance and high mechanical strength.
The insulation and sheath materials of wire cables are widely used. Such as soft PVC insulated wire, PVC sheathed cable insulation, electrical equipment with PVC insulation wire, high voltage crosslinked cable, star type/to wring type PVC insulated PVC sheathed communication cable, etc.
PVC cable has some excellent properties, radiation can be instead of more expensive teflon cable, used in some special occasions, such as exhaust fan, air conditioner, automobile engine gear, etc. And crosslinking, controlling the temperature of 170 ~ 180 ℃, screw length to diameter ratio with 35 advisable. The polyethylene can be used for thermoplastic processing and improves the performance of polyethylene.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
The crosslinking of polyolefin is modified
Heat shrinkable material. The PVC is properly formulated and can be heated by the radiation crosslinking system, which can be used to heat shrinkable materials such as heat shrink wrap film and heat shrink sleeve. In addition, by adding reactive unsaturated plasticizers in PVC processing aid and transparent, can be made of non-toxic transparent heat shrinkable packaging materials, used in food packaging and high-grade goods.
The medicinal materials. PVC radiation technology has packed file a separate process and cross-linking process, the characteristics of radiation crosslinking method can be used only on certain parts of the radiation products radiation, in order to meet the performance requirements of different parts, such as selection of crosslinking agent, plasticizer, use appropriate doses can make PVC chemical oxide content, pH value of performance index and so on to meet medical requirements. As the current medical treatment in coronary artery catheter balloon expansion, requirements on longitudinal have hardness change, namely the former part of the soft [shaw hardness is 70 ~ 76 (A)], part after A hard [shaw hardness is 90 ~ 96 (A)], adopt the radiation crosslinking easy to determine the appropriate process.
Building materials. Although the plastic bottle market has been replaced by the majority of PET bottles, the main market share of pipes and doors and Windows is growing faster than wood and aluminum.
Radiation crosslinking modification more expand the application range of PVC material, radiation crosslinking of PVC material has excellent dimensional stability, flame retardancy, abrasion resistance and resistance to chemical solvent, especially suitable for making good flooring, wallpaper and other building decoration materials. By radiation crosslinking floor tile, flame retardant, resistance to chemical corrosion, and the advantages of small thermal deformation, the absorption of cigarette butts thrown on the floor, step out can be swept away after, without a trace.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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