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Method for manufacturing halogen-free FR-4 copper-clad laminate
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A technology of FR-4, manufacturing method, applied in the direction of adhesive heating, bonding method, lamination, lamination device, etc., can solve the problems of ozone layer destruction, human and environmental hazards, etc., to achieve improved processing performance, good resistance The effect of flammability
Active Publication Date: 2012-07-25
SHANGHAI GUOJI ELECTRONICS MATERIALS CO LTD
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When brominated substances burn below 1000°C, a carcinogen, dioxin, will be produced. At the same time, dioxin will seriously damage the ozone layer in the atmosphere; it can be seen that the FR-4 board of brominated epoxy will indirectly harm humans and humans. environmental hazard
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[0117] 6 pieces of 7628 prepreg (1.2mm board material), copper foil is 2OZ.
[0118] 4. Thermoforming
[0119] Hot pressing temperature: 210°C
[0120] Pressure: 30kg / cm 2
[0121] Hot pressing time: 60min
[0122] 5. Basic performance parameters (Table 3)
[0123] table 3
[0124]
[0125] Studies have shown that in the field of flame retardants, nitrogen, phosphorus, and aluminum-based flame retardants are environmentally friendly flame retardants. For epoxy resin systems, the presen...
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Abstract
The invention relates to a method for manufacturing a halogen-free FR-4 copper-clad laminate. The method is realized by the following steps: glue mixing, sizing, plate arrangement, hot-press molding, disassembly, processing and inspecting, wherein an adhesive system in the step of the glue mixing is prepared from the following materials in mass ratio (kg): 125 to 143 kg of phosphorus-containing epoxy resin, 2.6 to 3.8 kg of dicyandiamide, 30 to 38 kg of dimethyl formamide, 0.060 to 0.080 kg of dimethyl imidazole, 10 to 40 kg of aluminium hydroxide, and 5 to 20 kg of silicon dioxide, wherein the phosphorus-containing epoxy resin is epoxy resin containing 2.0 to 4.0 mass percent of phosphorus. The method has the advantages of improving the manufacture performance of sheet materials on one hand, ensuring that the phosphorus and aluminum achieve synergistic flame retardant effect to endow the sheet materials with excellent flame retardant performance on the other hand, and meeting the standard requirement of IPC-4101B / 92 item (base material specification for rigid and multi-layer printed boards / 92 item) of RoHS environment-friendly directives (restriction of the use of certain hazardous substances in electric and electronic devices).
Description
technical field [0001] The invention relates to a method for manufacturing a copper-clad laminate, in particular to an adhesive used in the method. Background technique [0002] The improvement of global awareness of environmental protection marks a step forward for human civilization. The development of industry marks the progress of society, however, it brings immeasurable damage to the earth environment on which human beings live. Electronic and electrical products are no exception. [0003] As electronic and electrical products become more and more popular in human life, they become more and more common in the living space of human beings, and human beings become more and more dependent on them. is slowly approaching. [0004] PCB boards, the heart of electronic and electrical products, often contain or add a certain amount of flame retardant substances. The more commonly used flame retardant materials include halogen-containing compounds, antimony compounds, phospho...
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