Polyurethane self-endothermic low-temperature filling material and preparation method thereof
A technology of filling material and polyurethane, which is applied in the field of polyurethane self-absorbing low-temperature filling material and its preparation, can solve problems such as insufficient storage stability, foam crisp temperature, and high corrosiveness of raw materials, and solve problems such as poor flame retardancy, Easy transportation and good fluidity
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[0025] Example 1
[0026] The described polyurethane self-endothermic low-temperature filling material is prepared from the following components according to the following steps:
[0027] (1) Prepare 100Kg of component A, weigh 24.6Kg of polyether polyol a (3 functionality, molecular weight 3500, EO accounts for 15%), polyether polyol b (ethylenediamine with 4 functionality, molecular weight 350) polyether polyol) 36.7Kg, foam stabilizer (L6950, Momentive) 1.2Kg, water 24.6Kg, pentamethyldiethylenetriamine 0.3Kg, dimethylaminoethoxyethanol 0.3Kg, water-soluble Flame retardant (FR425, Suzhou Anhongtai) 12.3Kg, put the weighed polyether polyol and water into the mixing kettle and stir, then add the weighed foam stabilizer, catalyst and flame retardant, and then add the reaction In the kettle, stir evenly at room temperature, and after passing the sampling test, it can be loaded into barrels.
[0028] (2) prepare 100Kg of component B material, put accurately metered polymethyle...
Example Embodiment
[0030] Example 2
[0031] The described polyurethane self-endothermic low-temperature filling material is prepared from the following components according to the following steps:
[0032] (1) Prepare 100Kg of component A, weigh 23.5Kg of polyether polyol a (3 functionality, molecular weight 6000, EO accounts for 25%), polyether polyol b (ethylenediamine with 4 functionality, molecular weight 430) base polyether polyol) 19.3Kg, foam stabilizer (B8532, Evonik Degussa) 0.8Kg, water 42.7Kg, pentamethyldiethylenetriamine 0.2Kg, trimethylenediamine 0.3Kg, dimethyl Aminoethoxyethanol 0.4Kg, water-soluble flame retardant (FR425, Suzhou Anhongtai) 12.8Kg, put the weighed polyether polyol and water into the mixing kettle and stir, and then add the weighed foam stabilizer , catalyst and flame retardant are added to the reaction kettle in turn, stirred evenly at room temperature, and can be loaded into barrels after passing the sampling test.
[0033] (2) Prepare 100Kg of component B, a...
Example Embodiment
[0035] Example 3
[0036] The described polyurethane self-endothermic low-temperature filling material is prepared from the following components according to the following steps:
[0037] (1) Prepare 100Kg of component A, weigh 24.5Kg of polyether polyol a (3 functionality, molecular weight 5000, EO accounts for 15%), polyether polyol b (ethylenediamine with 4 functionality, molecular weight 350) base polyether polyol) 24.5Kg, foam stabilizer (L6970, Momentive, USA) 1Kg, water 44.1Kg, dimethylaminoethoxyethanol 1Kg, water-soluble flame retardant (FR425, Suzhou Anhongtai) 4.9Kg, Put the weighed polyether polyol and water into the mixing kettle and stir, then add the weighed foam stabilizer, catalyst and flame retardant, add them to the reaction kettle in turn, stir evenly at room temperature, and after sampling and testing are qualified, Can be filled.
[0038] (2) prepare 100Kg of component B material, put accurately metered polymethylene polyphenyl polyisocyanate 44V20 (Bay...
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