A kind of oil-resistant gypsum flue and its application
A flue and gypsum technology, applied in vertical pipes, manufacturing tools, building components, etc., can solve the problems of affecting oil fume effect, low strength, poor oil resistance of gypsum flue, etc., to achieve shortened production cycle, high strength, and solidification speed fast effect
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preparation example Construction
[0029] The preparation method of oil-resistant gypsum flue comprises the following steps:
[0030] (1) mixing polyamide and glass fiber into an alcoholic aqueous solution of coupling agent with a mass of 2 times, treating at 90-100 ° C for 30 min, removing the solution, drying, and grinding to obtain a polyamide composite material;
[0031] (2) Add polyvinyl chloride resin, reinforcing agent, adhesive, water reducing agent and retarder into water with 100% of its mass, and stir evenly at 50-60 °C to obtain a composite emulsion;
[0032] (3) mixing industrial by-product slaked plaster of paris, cement and quartz sand, adding water to make a suspension with a slurry concentration of 55%; gradually adding the suspension into the composite emulsion and stirring to obtain the initial raw material;
[0033] (4) Mix the polyamide composite material and the initial raw materials at a high speed evenly, add them to the flue mold, first treat the mold with the slurry laid at 90-100 °C f...
Embodiment 3
[0045] Example 3 Oil-resistant gypsum flue
[0046] Raw materials: 90kg of industrial by-product plaster of Paris, 20kg of cement, 10kg of quartz sand, 4kg of polyamide, 3kg of glass fiber, 6kg of polyvinyl chloride resin, 0.4kg of reinforcing agent, 2kg of adhesive, 0.3kg of sulfamate superplasticizer , 0.5kg sodium EDTA.
[0047] The reinforcing agent is composed of carboxymethyl cellulose and sodium dodecyl benzene sulfonate in a mass ratio of 1:1.
[0048] The adhesive is composed of polyvinyl alcohol and guar gum in a mass ratio of 1:1.
[0049] The preparation method of oil-resistant gypsum flue comprises the following steps:
[0050] (1) mixing polyamide and glass fiber into an alcohol aqueous solution of coupling agent with a mass of 2 times, treating at 90-100° C. for 40 min, removing the solution, drying, and grinding to obtain a polyamide composite material;
[0051] (2) Add polyvinyl chloride resin, reinforcing agent, adhesive, water reducing agent and retarder ...
experiment example 1
[0062] Measure the oil resistance of the samples of Examples 1-3 and Comparative Examples 1-3; prepare samples with reference to "Gypsum of Architecture" (GB9776-88), and conduct compressive strength testing; refer to GB50164-2011 "Concrete Quality Control" for impermeability grades "standard for testing; oil absorption rate: take a sample that has been maintained for 28 days, weigh it, immerse it in oil for 30 days, take it out, wipe off the oil on the surface and then weigh, the difference between the two weights is the same as that of the original sample. The weight ratio is the oil absorption rate; the oil penetration resistance height: immerse the 28-day-standard sample in the oil for 30 days, then take it out, split it under the pressure testing machine to measure the penetration depth of the oil in the sample.
[0063] Table 1 Gypsum oil resistance performance index
[0064]
PUM
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