Using ethyl acrylate (EA) and butyl acrylate (BA) as soft monomers, methyl methacrylate (MMA), styrene (St), and acrylonitrile as hard monomers, methyl Hydroxyethyl acrylate (HEMA) and methacrylic acid (MAA) as crosslinking monomers, sodium dodecyl sulfate (SDS) as emulsifiers, and ammonium persulfate (APS) as initiators, an acrylate base emulsion was prepared through semi-continuous seed emulsion polymerization. And then a modified acrylate adhesive for FPC was prepared by adding suitable amount of curing agent and vulcanizing agent to emulsion. The optimal formulation of the acrylate base emulsion was obtained by simple variable method and orthogonal experiment, that is as follow: m(soft monomer) : m(hard monomer) : m(crosslinking agent) : m(emulsifiers): m(initiators)= 65:30:4:3:0.3, w(SDS)=2%, w(APS)=0.3%. With this formulation, the peel strength of the encapsulation sample is 0.92 N/mm, the peel strength of the single panel is 2.15 N/mm, and the soldering resistance pass rate is 100%, the moisture absorption rate of the film is 3.11%, which can all meet the performance requirements of adhesivein the FPC substrate.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |