Non-Polar Ethylene-Based Compositions with Triallyl Phosphate for Encapsulant Films

Abstract

An encapsulant film is made from a composition comprising (A) a non-polar ethylene-based polymer having a density of 0.850 g/cc to 0.890 g/cc; (B) an organic peroxide; (C) a silane coupling agent; and (D) a co-agent comprising triallyl phosphate.

1 . An encapsulant film comprising a composition, the composition comprising:
 (A) a non-polar ethylene-based polymer having a density of 0.850 g/cc to 0.890 g/cc;   (B) an organic peroxide;   (C) a silane coupling agent; and   (D) a co-agent comprising triallyl phosphate.   
     
     
         2 . The encapsulant film of  claim 1 , wherein the non-polar ethylene-based polymer is an ethylene/alpha-olefin copolymer. 
     
     
         3 . The encapsulant film of  claim 2 , wherein the non-polar ethylene-based polymer is selected from the group consisting of an ethylene/alpha-olefin random copolymer and an ethylene/alpha-olefin block copolymer. 
     
     
         4 . The encapsulant film of  claim 1 , wherein the composition comprises of
 (A) from 50 wt % to 99 wt % of the non-polar ethylene-based polymer based on the total weight of the composition;   (B) from 0.1 wt % to 5 wt % of the organic peroxide based on the total weight of the composition;   (C) from 0.01 wt % to 2 wt % of the silane coupling agent based on the total weight of the composition; and   (D) from 0.01 wt % to 1.5 wt % of the co-agent based on the total weight of the composition.   
     
     
         5 . The encapsulant film of  claim 4 , wherein the co-agent is present in an amount from 0.2 wt % to 1.0 wt % based on the total weight of the composition. 
     
     
         6 . The encapsulant film of  claim 4 , wherein the co-agent comprises triallyl phosphate and at least one other compound. 
     
     
         7 . The encapsulant film of  claim 4 , wherein the co-agent comprises from greater than 20 wt % to less than 100 wt % of triallyl phosphate based on the total weight of the co-agent. 
     
     
         8 . The encapsulant film of  claim 4 , wherein the co-agent comprises a mixture of triallyl phosphate and at least one of (i) triallyl cyanurate and triallyl isocyanurate. 
     
     
         9 . The encapsulant film of  claim 8 , wherein the co-agent comprises from 50 wt % to less than 100 wt % triallyl phosphate based on the total weight of the co-agent. 
     
     
         10 . The encapsulant film of  claim 4  having a volume resistivity of from greater than or equal to 2.1*10 15  ohm.cm to 1.0*10 16  ohm.cm at 60° C. 
     
     
         11 . An electronic device module comprising:
 an electronic device, and   at least one film composed of a crosslinked polymeric composition which is the reaction product of a composition comprising   (A) a non-polar ethylene-based polymer having a density of 0.850 g/cc to 0.890 g/cc;   (B) an organic peroxide;   (C) a silane coupling agent; and   (D) a co-agent comprising triallyl phosphate.   
     
     
         12 . The electronic device module of  claim 11 , wherein the at least one film has a volume resistivity of from greater than or equal to 2.1*10 15  ohm.cm to 1.0*10 16  ohm.cm at 60° C. 
     
     
         13 . The electronic device module of  claim 11 , wherein the crosslinked polymeric composition is a reaction product of
 (A) from 95 wt % to 99 wt % of the non-polar ethylene-based polymer based on the total weight of the composition;   (B) from 0.75 wt % to 1.5 wt % of an organic peroxide based on the total weight of the composition;   (C) from 0.1 wt % to 0.3 wt % of the silane coupling agent based on the total weight of the composition; and   (D) from 0.2 wt % to 1.3 wt % of the co-agent comprising triallyl phosphate based on the total weight of the composition,   wherein the at least one film has a volume resistivity from greater than or equal to 2.2*10 15  ohm.cm to 9.5*10 15  ohm.cm at 60° C.   
     
     
         14 . The electronic device module of  claim 11 , wherein the electronic device is a photovoltaic cell.