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Study on Single and Combined Toughening Phenolic Foam and Flame Retardant Properties

Author: DaiYingHua
Tutor: YinJinJie
School: Liaoning Technical University
Course: Materials Science
Keywords: phenolic resin foam single toughing composite toughing flame retardant
CLC: TQ328
Type: Master's thesis
Year: 2011
Downloads: 171
Quote: 0
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Abstract


The paper modifies phenolic resin with the polyurethane (MDI), PEG, PVA by single toughing and between two composite toughing way, and takes gable ammonium polyphosphate (APP) / melamine (MEL)/ pentaerythritol (PER) and gable melamine gathers phosphate (MPP) as the coordinated fire-retardant. Thus it prepares new type flame-retardant phenolic foam.This article carries on the infrared test (IR), SEM test, iMPact strength test, tensile strength test water absorption, apparent density and chalking rate test to the toughening modification phenolic foam. The result indicates that, the composite toughing phenolic foam has better mechanics performance than single toughing phenolic foam, the increased impact strength is 3.898kJ/m~2 and 1.522kJ/m~2, compared with pure and single modification, and tensile strength also increases 0.448MPa; the phenolic foam has better flame retardancy and thermal stability as the introduction of fire retardant. Burning time decreases to 10s, reaches the flame retardant standards. This article lists the best allocated proportion.

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CLC: > Industrial Technology > Chemical Industry > Synthetic resins and plastics industry > Foam
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