“…In order to improve the deficiency of bulk PMMA, another monomer is introduced into polymer molecular chain structure, aggregation structure or fabric structure, so as to enhance its practical application performance that containing wear resistance, flame retardant, toughness and heat resistant performance. PMMA has many modification methods, such as toughening organic elastomer [1][2][3] and inorganic rigid material, interpenetrating network structure, crosslinking copolymerization modification, improving the molecular chain structure, nano composite [4] and surface coating modification [5] ,etc.…”