Drawing method of EPS foam-epoxy resin composite die applied to sand casting
A technology of epoxy resin and sand casting, applied in epoxy resin glue, casting molding equipment, equipment for loosening the model, etc. Strength-enhancing effect
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Embodiment 1
[0039] A method for drawing out an EPS foam-epoxy resin composite mold applied to sand casting, comprising the following steps:
[0040] S1: Preparation of epoxy resin plate material:
[0041] a. Take the following raw materials by weight: bisphenol F type epoxy resin 3kg, bisphenol A type epoxy resin 10kg, E-51 epoxy resin 5kg, isophthalic unsaturated polyester resin 10kg, rush fiber powder 1kg, chitosan 1kg, oxalic acid 1kg, wheat straw powder 0.5kg, triphenylphosphine 0.01kg, dimethyl sulfoxide 10kg, stone powder 5kg, curing agent 5kg; Composition of raw materials: 3kg of quartz powder, 1kg of aluminum hydroxide powder, 0.5kg of marble powder; the curing agent is composed of the following raw materials: trimellitic anhydride 1kg, methyltetrahydrophthalic anhydride 1kg, N-(3,4-dichloro Phenyl)-N', N'-dimethylurea 2kg;
[0042]b. Mix oxalic acid, wheat straw powder, bisphenol F epoxy resin, bisphenol A epoxy resin, E-51 epoxy resin, and isophthalic unsaturated polyester res...
Embodiment 2
[0054] A method for drawing out an EPS foam-epoxy resin composite mold applied to sand casting, comprising the following steps:
[0055] S1: Preparation of epoxy resin plate material:
[0056] a. Take the following raw materials by weight: bisphenol F type epoxy resin 5kg, bisphenol A type epoxy resin 15kg, E-51 epoxy resin 8kg, isophthalic unsaturated polyester resin 12kg, rush fiber powder 3kg, chitosan 2kg, oxalic acid 2kg, wheat straw powder 1kg, triphenylphosphine 0.03kg, dimethyl sulfoxide 15kg, stone powder 7kg, curing agent 8kg; Composition: 3.5kg of quartz powder, 1.5kg of aluminum hydroxide powder, and 1kg of marble powder; the curing agent consists of raw materials including the following weights: 2kg of trimellitic anhydride, 2kg of methyltetrahydrophthalic anhydride, N-(3,4-dichloro Phenyl)-N', N'-dimethylurea 3.5kg;
[0057] b. Mix oxalic acid, wheat straw powder, bisphenol F epoxy resin, bisphenol A epoxy resin, E-51 epoxy resin, and isophthalic unsaturated po...
Embodiment 3
[0069] A method for drawing out an EPS foam-epoxy resin composite mold applied to sand casting, comprising the following steps:
[0070] S1: Preparation of epoxy resin plate material:
[0071] a. Take the following raw materials by weight: bisphenol F type epoxy resin 8kg, bisphenol A type epoxy resin 20kg, E-51 epoxy resin 10kg, isophthalic unsaturated polyester resin 15kg, rush fiber powder 5kg, chitosan 3kg, oxalic acid 3kg, wheat straw powder 1.4kg, triphenylphosphine 0.05kg, dimethyl sulfoxide 20kg, stone powder 10kg, curing agent 10kg; Composition of raw materials: 4kg of quartz powder, 2kg of aluminum hydroxide powder, 1.5kg of marble powder; the curing agent is composed of the following raw materials: 3kg of trimellitic anhydride, 3kg of methyltetrahydrophthalic anhydride, N-(3,4-dichloro Phenyl)-N', N'-dimethylurea 5kg;
[0072] b. Mix oxalic acid, wheat straw powder, bisphenol F epoxy resin, bisphenol A epoxy resin, E-51 epoxy resin, and isophthalic unsaturated pol...
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