Flame-retardant wallpaper and preparation method thereof
A wallpaper and flame retardant technology, applied in the chemical industry, can solve problems such as non-thermal hazards, reducing visibility, and hindering timely escape.
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Embodiment 1
[0079] Embodiment 1 prepares OMMT
[0080] 1. Commercially available sodium-based MMT (molecular formula: Mx(Al 4 -xMg x ) Si 8 o 20 (OH) 4 , ion exchange capacity 80-120mmol / 100g) pulverized and sieved to obtain a powder with a particle size of 80-100 mesh; then add water to the MMT powder to swell the MMT powder to obtain a MMT-water-swellable product, wherein the volume of water is the same as that of MMT The weight ratio of the powder is 3:1;
[0081] 2. Add intercalation agent KH-560 (CH 3 -CH(OCH 2 -O(CH 2 ) 3 Si(OCH 3 ) 3 ), and after stirring evenly, carry out the modification reaction at a temperature of 80-85°C for 4-5h, wherein the weight ratio of MMT in the MMT-water-swellable product to KH-560 is 1.5:100;
[0082] 3. Centrifuge the reaction mixture, remove the supernatant, add distilled water to the centrifuged sediment for washing, centrifuge to remove excess alkylammonium and bromide ions, and use 0.1mol / L AgNO 3 The solution was tested for its absen...
Embodiment 2
[0086] Example 2 Screening of intumescent flame retardants
[0087] 2-1. Screening of main ingredients of intumescent flame retardants
[0088] Sample: Sapele (red shadow), thickness 0.280mm; size specification: 70mm×210mm;
[0089] Method: Mix APP and water according to the ratio as described in Table 1, dissolve and make APP solutions with different concentrations; then soak Sapele in APP solutions with different concentrations respectively, and perform ultrasonic impregnation at room temperature for 2 minutes; then ultrasonic Sapele after impregnation treatment is dried at 105±2°C for 1-2h and then left to stand for 24-48h at 23±1°C and relative humidity of 50±2%. Finally, the national standard method GB / T14656—2009 " Flame-retardant paper and cardboard combustion performance test method "determination of Sapele combustion state, the measurement results are shown in Table 1.
[0090] Table 1 Effect of different concentrations of APP on combustion state
[0091]
[009...
Embodiment 3
[0123] The preparation of embodiment 3 flame retardant solution
[0124] 3-1. Prepared intumescent flame retardant A
[0125] 3-1A. Weigh the raw materials APP, PER, GP, and OMMT respectively (prepared in Example 1), wherein the weight ratio of APP:PER:GP is 10:3:5, and the weight ratio of OMMT:APP is 5:100 ;
[0126] 3-1B. After mixing APP, PER, and GP evenly, add distilled water or deionized water to dilute it into a flame retardant base solution with an APP mass percentage concentration of 15%;
[0127] 3-1C. Put the flame retardant basic solution in an ultrasonic cleaner for ultrasonic vibration treatment until the solution is clear and transparent without sediment; then add OMMT; then perform ultrasonic vibration treatment again and keep stirring until the OMMT is suspended In the flame retardant, the intumescent flame retardant suspension A of the present invention is obtained.
[0128] 3-2. Prepared intumescent flame retardant B
[0129] 3-2A. Weigh the raw material...
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