January 17, 2021 11:59 PM PST
Halogen free printed circuit board is called Halogen Free PCB. Halogen
free PCB is made of halogen-free copper clad laminate. Halogen elements
are extremely life-threatening chlorine, bromine, fluorine, iodine and
very. For PCB to be considered “halogen-free”, the content of chlorine
or bromine must be less than 900 ppm, and the total amount of halogen
materials must be less than 1500 ppm.To get more news about [url=https://www.pcbmake.com/what-is-halogen-free-pcb/]Halogen Free PCB[/url], you can visit pcbmake official website.
In
PCB manufacturing, the relevant halogen elements (such as chlorine and
bromine) do have some benefits, but these benefits do not exceed the
negative effects they may cause in our daily life.
Chlorine is
used as a flame retardant to protect components and as an element in PVC
coating of wires.Bromine is used as a sterilant. It can also be used as
a flame retardant in electronic components.
Despite their
advantages, they cannot avoid their negative effects. Exposure to
chlorine or bromine can cause coughing, nausea, blurred vision, skin
irritation, dyspnea and eye burns. Chlorine compounds can also combine
with hydrocarbons to form dioxins, a deadly carcinogen.
It is
best to avoid large amounts of chlorine or bromine in PCB. As technology
advances, manufacturers are developing effective PCBs that do not use
these harmful chemicals.
Performance of Halogen Free PCB
Insulation:
due to the substitution of halogen by P or N, the polarity of epoxy
resin molecular bond is reduced, thus increasing the insulation
resistance and breakdown voltage.
Water absorption: due to the
relatively low electrons of N and P in nitrogen phosphorus reducing
oxygen resin, the possibility of hydrogen atom bonding in water is lower
than that of halogen. The water absorption of halogen free PCB is lower
than that of conventional PCB, which affects the reliability to a
certain extent.
Thermal stability: the content of nitrogen and
phosphorus in Halogen free PCB is higher than that in common PCB, so the
monomer molecular weight and TG value increase.
Under heating, the
molecular mobility of halogen free PCB is lower than that of
conventional epoxy resin board, so halogen free PCB has relatively low
coefficient of thermal expansion (CTE).
Halogen free printed circuit board is called Halogen Free PCB. Halogen
free PCB is made of halogen-free copper clad laminate. Halogen elements
are extremely life-threatening chlorine, bromine, fluorine, iodine and
very. For PCB to be considered “halogen-free”, the content of chlorine
or bromine must be less than 900 ppm, and the total amount of halogen
materials must be less than 1500 ppm.To get more news about [b][url=https://www.pcbmake.com/what-is-halogen-free-pcb/]Halogen Free PCB[/url][/b], you can visit pcbmake official website.
In
PCB manufacturing, the relevant halogen elements (such as chlorine and
bromine) do have some benefits, but these benefits do not exceed the
negative effects they may cause in our daily life.
Chlorine is
used as a flame retardant to protect components and as an element in PVC
coating of wires.Bromine is used as a sterilant. It can also be used as
a flame retardant in electronic components.
Despite their
advantages, they cannot avoid their negative effects. Exposure to
chlorine or bromine can cause coughing, nausea, blurred vision, skin
irritation, dyspnea and eye burns. Chlorine compounds can also combine
with hydrocarbons to form dioxins, a deadly carcinogen.
It is
best to avoid large amounts of chlorine or bromine in PCB. As technology
advances, manufacturers are developing effective PCBs that do not use
these harmful chemicals.
Performance of Halogen Free PCB
Insulation:
due to the substitution of halogen by P or N, the polarity of epoxy
resin molecular bond is reduced, thus increasing the insulation
resistance and breakdown voltage.
Water absorption: due to the
relatively low electrons of N and P in nitrogen phosphorus reducing
oxygen resin, the possibility of hydrogen atom bonding in water is lower
than that of halogen. The water absorption of halogen free PCB is lower
than that of conventional PCB, which affects the reliability to a
certain extent.
Thermal stability: the content of nitrogen and
phosphorus in Halogen free PCB is higher than that in common PCB, so the
monomer molecular weight and TG value increase.
Under heating, the
molecular mobility of halogen free PCB is lower than that of
conventional epoxy resin board, so halogen free PCB has relatively low
coefficient of thermal expansion (CTE).
