Ecological briquette surface curing agent and its preparing method
A surface-cured, ecological technology, applied in the direction of transporting objects, can solve traffic safety threats, deteriorate the working environment of flight attendants, deteriorate the environment of employees and passengers, etc., achieve huge economic and social benefits, reduce flying losses along the way, and reduce manpower The effect of material resources
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Embodiment 1
[0025] Raw material ratio:
[0026] Raw material name Proportion (weight %) Raw material name Proportion (weight %)
[0027] Polyvinyl alcohol 1 Sodium hypochlorite 0.6
[0028] Corn starch 5 Sodium thiosulfate 0.08
[0029] Copper sulfate 0.01 Borax 0.05
[0030] Caustic soda 0.6 Water 92.5
[0031] Preparation:
[0032] The first step, graft modification
[0033] according to figure 1 According to the process flow chart, add 55% of the total water in the raw material ratio to the reactor, then add 1% polyvinyl alcohol, stir, heat up to 95°C to completely dissolve the polyvinyl alcohol, cool down to 60°C, and add cornstarch 5%, stirred and kept for 1h for graft modification;
[0034] The second step, catalytic oxidation
[0035] After modification, cool the material to 25°C, add 0.01% copper sulfate to the reaction kettle, then add one-sixth of the total caustic soda, stir evenly, then add 10% sodium hypochlorite (0.4-0.8%) solution, catalytic oxidation Reaction 1h. ...
Embodiment 2
[0041] Raw material ratio:
[0042] Raw material name Proportion (weight %) Raw material name Proportion (weight %)
[0043] Polyvinyl alcohol 1.5 Sodium hypochlorite 0.8
[0044] Corn starch 6 Sodium thiosulfate 0.1
[0045] Copper sulfate 0.01 Borax 0.06
[0046] Caustic soda 0.6 Water 94.5
[0047] Preparation:
[0048] According to the ratio of raw materials in Example 2, the specific preparation steps are the same as in Example 1, but the heating temperature of graft modification is 99°C, and then the temperature is lowered to 50°C.
Embodiment 3
[0050] Raw material ratio:
[0051] Raw material name Proportion (weight %) Raw material name Proportion (weight %)
[0052] Polyvinyl alcohol 0.5 Sodium hypochlorite 0.4
[0053] Corn starch 4 Sodium thiosulfate 0.06
[0054] Copper sulfate 0.005 Borax 0.03
[0055] Caustic soda 0.4 Water 90.5
[0056] Preparation:
[0057] According to the ratio of raw materials in Example 3, the specific preparation steps are the same as in Example 1, but the heating temperature of graft modification is 97°C, and then the temperature is lowered to 55°C.
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