High heat-durable resin dedicated to PP-R tube and its preparation method
A high heat resistance, PP-R technology, applied in the field of cold and hot water pipe materials for construction, can solve the problems of poor heat resistance and unsatisfactory mechanical properties, and achieve the effect of strong heat insulation performance
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Embodiment 1
[0035] Ordinary PP-R resin (melt flow rate is 0.30g / 10min) 93%
[0036] Modified Nano Calcium Carbonate Whiskers 2.5%
[0037] Layered Mica 3%
[0038] Rutile Nano Titanium Dioxide (d 50 =20nm) 1%
[0039] Polyacrylamide 0.5%
[0040] The modified nano-calcium carbonate whiskers used are modified by a silane coupling agent, the length of the nano-calcium carbonate whiskers used is 0.5 μm, and the diameter is 10-50 nm; the particle size of the layered mica is 600 mesh, and the diameter-thickness ratio is 6. : 1.
[0041] The layered mica, modified nano-calcium carbonate whiskers, rutile nano-titanium dioxide, PP-R resin and dispersant are uniformly pre-mixed in a high-speed mixer; the solid mixture is fully blended and smelted in a molten state; after blending and smelting The material is extruded and granulated with a screw.
Embodiment 2
[0043] Ordinary PP-R resin (melt flow rate: 0.35g / 10min) 91%
[0044] Modified Nano Zinc Oxide Whiskers 2.5%
[0045] Layered Mica 4%
[0046] Rutile Nano Titanium Dioxide (d 50 =40nm) 2%
[0047] Polyacrylamide 0.5%
[0048] Wherein the granularity of layered mica used is 800 orders, and diameter-thickness ratio is 6: 1; Modified nano-zinc oxide whisker is modified through KH560 coupling agent, and used nano-zinc oxide whisker is three-dimensional four-needle shape, and the whisker's The diameter of the centrosome is 300nm, and the length of the needle is 15μm.
[0049] The layered mica, modified nano-zinc oxide whiskers, rutile nano-titanium dioxide, PP-R resin and dispersant are uniformly pre-mixed in a high-speed mixer; the solid mixture is fully blended and smelted in a molten state; after blending and smelting The material is extruded and granulated with a screw.
[0050] Schedule 1:
[0051]
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