Flame retardant rigid polyisocyanurate foam and preparation method thereof
A polyisocyanurate and rigid foam technology, applied in the field of flame retardant polyester foam, can solve the problems of weak compressive strength and tensile strength of rigid foam, high production cost, and many flame retardants, and achieve excellent resistance. The effect of combustion performance, low cost and excellent performance
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Embodiment 1
[0033] A flame-retardant polyisocyanurate rigid foam, the flame-retardant polyisocyanurate rigid foam is composed of the following components by weight: 160 parts of polyisocyanate, 6 parts of polyether polyol, flame-retardant 18 parts of agent, 3 parts of catalyst, 2 parts of stabilizer, 18 parts of blowing agent;
[0034] The flame retardant is a nitrogen-containing flame retardant mixed with a phosphorus-containing flame retardant in a mass ratio of 1:1.
[0035] Specifically, the NCO content in the polyisocyanate is 32-35%.
[0036] Specifically, the polyether polyol polyoxypropylene diol and polyoxyethylene diol.
[0037]Specifically, the nitrogen-containing flame retardant is 3-morpholine-4-chloro-1,2,5-thiadiazole; the phosphorus-containing flame retardant is phosphorothioate triisocyanate.
[0038] Specifically, the catalyst is N,N-dimethylcyclohexylamine.
[0039] Specifically, the stabilizer is trisiloxane.
[0040] Specifically, the foaming agent is formed by mi...
Embodiment 2
[0045] A flame-retardant polyisocyanurate rigid foam, consisting of the following components by weight: 150 parts of polyisocyanate, 5 parts of polyether polyol, 15 parts of flame retardant, 2 parts of catalyst, 1 part of stabilizer, 15 parts of blowing agent;
[0046] The flame retardant is a nitrogen-containing flame retardant mixed with a phosphorus-containing flame retardant in a mass ratio of 1:1.
[0047] Specifically, the NCO content in the polyisocyanate is 32-35%.
[0048] Specifically, the polyether polyol polyoxyethylene diol, polytetrahydrofuran diol and polyoxyethylene triol.
[0049] Specifically, the nitrogen-containing flame retardant is diammonium hydrogen phosphate and 3-morpholine-4-chloro-1,2,5-thiadiazole; the phosphorus-containing flame retardant is ammonium dihydrogen phosphate and tri( 2,3-Dibromopropyl) phosphate.
[0050] Specifically, the catalyst is bis(2-dimethylaminoethyl)ether and triethanolamine.
[0051] Specifically, the stabilizer is amin...
Embodiment 3
[0057] A flame-retardant polyisocyanurate rigid foam, consisting of the following components by weight: 170 parts of polyisocyanate, 8 parts of polyether polyol, 20 parts of flame retardant, 3 parts of catalyst, 3 parts of stabilizer, 20 parts of blowing agent;
[0058] The flame retardant is a nitrogen-containing flame retardant mixed with a phosphorus-containing flame retardant in a mass ratio of 1:1.
[0059] Specifically, the NCO content in the polyisocyanate is 32-35%.
[0060] Specifically, the polyether polyol is polytetrahydrofuran diol and polyethylene oxide triol.
[0061] Specifically, the nitrogen-containing flame retardant is 3-morpholine-4-chloro-1,2,5-thiadiazole and melamine cyanurate; the phosphorus-containing flame retardant is sodium triphosphate and triphosphate thiophosphate isocyanate.
[0062] Specifically, the catalyst is N,N,N',N'-tetramethylalkylenediamine.
[0063] Specifically, the stabilizer is trisiloxane.
[0064] Specifically, the foaming a...
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