The PPBES/ PPENK laminate was prepared through the blend of Poly(phthalazinone biphenylene ether
sulfone) (PPBES) containing phthalazinone and poly( arylene ether nitrile) ( PPENK) with heat-resitant and
soluble by solution dipping process. The compatibility and ratio of resins were discussed. The effects of PPBES/
PPENK resin content on the flexural strength(25℃,150℃) and water absorption of the laminate were studied. The
dielectric properties and flame retardancy of the laminate were tested. The SEM result approved that PPBES and
PPENK are fully compatible. When PPBES/ PPENK =4/6 and the blending resin content is 35. 4%, the laminate
has optimum comprehensive performances. And the retention rate of flexural strength on 150℃ is 95. 7%. Under condition
of 1MHz, the dielectric constant and dielectric loss is 3. 5 and 0. 0037, respectively. The volume resistivity is
5. 9×1014 at DC 500 V. Its flame retardant property rate is UL94-V0.