The invention belongs to the technical field of sealing materials, and particularly relates to dealcoholization
sealant for a photovoltaic
assembly and a preparation method thereof. The dealcoholization
sealant for the photovoltaic
assembly is prepared from the following raw materials in parts by weight: 80 to 100 parts of polyalkoxy
silicon base-terminated
polydimethylsiloxane, 20 to 30 parts offiller, 4 to 6 parts of
flame-retardant agent, 3 to 5 parts of
titanium dioxide color paste, 1.5 to 2.5 parts of water removal agent, 2 to 4 parts of cross0linking agent, 0.4 to 0.6 part of organic
tin chelate catalyst and 0.8 to 1.2 parts of compound
coupling agent. The preaparation method of the dealcoholization
sealant for the photovoltaic
assembly comprises the following steps: (1) measuring all raw materials according to the weight ratio; (2) adding the polyalkoxy
silicon base-terminated
polydimethylsiloxane, the filler, the
flame-retardant agent and the
titanium dioxide color paste intoa vacuum kneading
machine, dehydrating, blending, kneading for 4 to 6 hours, and cooling to the
room temperature; and (3) adding a
dewatering agent, a cross-linking agent, organic
tin chelate catalystand a compound
coupling agent, and sufficiently mixing, so as to obtain the dealcoholization sealant for the photovoltaic assembly. The dealcoholization sealant for the photovoltaic assembly has thecharacteristics of short
curing time,
high adhesion strength and good
aging resistance.