Phenolic resin foam material and preparing method thereof
A technology of phenolic resin foam and raw materials, which is applied in the field of external wall insulation, can solve the problems of difficult coordination between toughening and flame retardancy, and achieve good toughening and flame retardancy effects, improved toughness, and good combination effects
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[0049] Example 1
[0050] A phenolic resin foam material, calculated in parts by weight, consisting of 175 parts of component A and 50 parts of component B;
[0051] The A component is calculated in parts by weight, and its raw material composition and content are as follows:
[0052] Resole phenolic resin 100 parts
[0053] Medium viscosity chitosan 20 parts
[0054] 30 parts of lignin polyether polyol
[0055] Surfactant 5 parts
[0056] Blowing agent monofluorodichloroethane (HCFC-141b) 10 parts
[0057] Diluent methyl formate 10 parts
[0058] The said surfactant is a silicone nonionic surfactant (AK-8832) and Tween-80 formulated at a weight percentage of 1:1;
[0059] The medium-viscosity chitosan refers to a viscosity of 400-800 cP, a degree of deacetylation of 90%, and a powder particle size of 200 mesh;
[0060] The said lignin polyether polyol uses alkali lignin, diethanolamine and formaldehyde to carry out Mannich reaction at a molar ratio of 1:2:1 to obtain polyhydroxyl intermed...
Example Embodiment
[0073] Example 2
[0074] A phenolic resin foam material, calculated in parts by weight, consisting of 200 parts of component A and 20 parts of component B;
[0075] The A component is calculated in parts by weight, and its raw material composition and content are as follows:
[0076] Resole phenolic resin 100 parts
[0077] Medium viscosity chitosan 10 parts
[0078] 10 parts of lignin polyether polyol
[0079] 20 parts of aluminum hydroxide
[0080] Surfactant 10 parts
[0081] Blowing agent monofluorodichloroethane (HCFC-141b) 20 parts
[0082] Diluent methyl formate 30 parts
[0083] Said surfactant is a silicone nonionic surfactant (AK-8832) and Tween-80 formulated at a weight percentage of 1:1;
[0084] The medium-viscosity chitosan refers to a viscosity of 400-800 cP, a degree of deacetylation of 90%, and a powder particle size of 200 mesh;
[0085] The lignin polyether polyol uses alkali lignin, diethanolamine and formaldehyde to perform Mannich reaction at a molar ratio of 1:2:1 to...
Example Embodiment
[0095] Example 3
[0096] A phenolic resin foam material, calculated in parts by weight, consisting of 187.5 parts of component A and 35 parts of component B;
[0097] The A component is calculated in parts by weight, and its raw material composition and content are as follows:
[0098] Resole phenolic resin 100 parts
[0099] Medium viscosity chitosan 15 parts
[0100] Lignin polyether polyol 20 parts
[0101] Aluminum hydroxide 10 parts
[0102] Surfactant 7.5 parts
[0103] Blowing agent monofluorodichloroethane (HCFC-141b) 15 parts
[0104] Diluent methyl formate 20 parts
[0105] Said surfactant is a silicone nonionic surfactant (AK-8832) and Tween-80 formulated at a weight percentage of 1:1;
[0106] The medium-viscosity chitosan refers to a viscosity of 400-800 cP, a degree of deacetylation of 90%, and a powder particle size of 200 mesh;
[0107] The lignin polyether polyol uses alkali lignin, diethanolamine and formaldehyde to perform Mannich reaction at a molar ratio of 1:2:1 to ob...
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