Environment-friendly high-flame-retardant CR multi-component blending closed-cell secondary foaming material and preparation method thereof
A secondary foaming, high flame retardant technology, applied in the field of polymer materials, can solve the problem that CR foam materials cannot achieve flame retardant, and achieve the effects of weight reduction, good comprehensive performance and good material dispersion.
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Embodiment 1
[0051] A method for preparing an environment-friendly high flame-retardant CR multi-component blended closed-cell secondary foaming material, comprising the following steps:
[0052] Banbury premixing process:
[0053] Step 1: Pre-mixing in a 75L rhombus-shaft W-type hammer mixer: put 100 parts of POE, 50 parts of neoprene CR40W, and 1.5 parts of stearic acid into the internal mixer, and add Press to 7 kg, knead for 10 minutes, continue to fill with cold water to cool down during the kneading process, and discharge when the temperature reaches 175°C;
[0054] Step 2: Put the pre-mixed POE and CR40W into the open mill, control the temperature at 155°C, turn the material for 180 seconds at 5mm, and cut the thin material with a thickness of 2mm into the corresponding weight. processing;
[0055] Step 3 16-inch open mill calendering and standing still: Put the material after the 18-inch automatic turning open mill in step 2 into the 16-inch open mill again for rolling and thinni...
Embodiment 2
[0077] A method for preparing an environment-friendly high flame-retardant CR multi-component blended closed-cell secondary foaming material, comprising the following steps:
[0078] Banbury premixing process:
[0079] Step 1 75L rhombus leaf shaft W-type heavy hammer internal mixer pre-mixing: according to the proportioning by weight, 100 parts of POE, 50 parts of neoprene CR40W, 2 parts of stearic acid are dropped into the internal mixer, add Press to 7 kg, knead for 10 minutes, continue to fill cold water to cool down during the kneading process, and discharge when the temperature reaches 170°C;
[0080] Step 2: Put the pre-mixed POE and CR40W into the open mill, control the temperature at 150°C, turn the material 5mm for 180 seconds, and cut the thin material with a thickness of 2mm into the corresponding weight. processing.
[0081] Step 3 16-inch open mill calendering and standing still: put the material after the 18-inch automatic turning mill in step 2 into the 16-in...
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