A method for rapid preparation of micron-scale microplastics in the laboratory
A micron-scale, micro-plastic technology, applied in the field of micro-plastics, can solve the problems of long preparation process time, difficulty in meeting the experimental requirements of micro-plastic particle size, particle size can not be reached, etc., to achieve the effect of short preparation process time
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Embodiment 1
[0024] The present embodiment provides a method for rapidly preparing micron-scale microplastics in a laboratory, comprising the following steps:
[0025] Step 1. Cut the plastic waste into small pieces; the tool used for cutting is one of scissors and a small electric cutter; the length of the plastic waste after cutting is 4cm, the width is 2cm, and the thickness is 0.5cm;
[0026] Step 2, place in liquid nitrogen for freezing treatment for 4min;
[0027] Step 3. Soak the frozen plastic waste in silicone oil for 10s;
[0028] Step 4, place the ultrasonic in the ultrasonic crusher, and the ultrasonic power is 400W; the ultrasonic time is 4min;
[0029] Step 5. Add the ultrasonic plastic waste into a mortar, and then add liquid nitrogen to grind and pulverize, and the grinding time is 5min;
[0030] Step 6, sieve the ground and pulverized materials, and the sieve used for sieving has an aperture of 200 μm, that is, micro-scale microplastics of 50-200 μm are obtained.
Embodiment 2
[0032] The present embodiment provides a method for rapidly preparing micron-scale microplastics in a laboratory, comprising the following steps:
[0033] Step 1. Cut the plastic waste into small pieces; the tool used for cutting is one of scissors and a small electric cutting machine; the length of the plastic waste after cutting is 3cm, the width does not exceed 2cm, and the thickness does not exceed 0.6cm;
[0034] Step 2, place in liquid nitrogen for freezing treatment for 3min;
[0035] Step 3. Soak the frozen plastic waste in silicone oil for 5s;
[0036] Step 4, place the ultrasonic in the ultrasonic crusher, the ultrasonic power is 300W; the ultrasonic time is 5min;
[0037] Step 5. Add the ultrasonic plastic waste into a mortar, and then add liquid nitrogen to grind and pulverize, and the grinding time is 6 minutes;
[0038] Step 6, sieving the ground and pulverized materials, and the sieve mesh used for sieving has a pore size of 100 μm, that is, micro-scale microp...
Embodiment 3
[0040] The present embodiment provides a method for rapidly preparing micron-scale microplastics in a laboratory, comprising the following steps:
[0041] Step 1. Cut the plastic waste into small pieces; the tool used for cutting is one of scissors and a small electric cutter; the length of the plastic waste after cutting is not more than 2cm, the width is not more than 1cm, and the thickness is not more than 0.8 cm;
[0042] Step 2, placed in liquid nitrogen for freezing treatment for 5min;
[0043] Step 3. Soak the frozen plastic waste in silicone oil for 20s;
[0044] Step 4, place the ultrasonic in the ultrasonic crusher, the ultrasonic power is 500W; the ultrasonic time is 3min;
[0045] Step 5. Add the ultrasonic plastic waste into a mortar, and then add liquid nitrogen to grind and pulverize, and the grinding time is 3 minutes;
[0046] Step 6, sieving the ground and pulverized materials, and the aperture diameter of the screen used for sieving is 900 μm, that is, 50...
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