A New Type of Water Ring Vacuum Pump
A water-ring vacuum pump and water-ring technology, which is applied to pumps, pump components, rotary piston pumps, etc., can solve the scaling problems of water-ring vacuum pumps, improve cleanliness, and avoid difficult reprocessing and scaling.
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[0076] Preparation Example: Preparation of Modified Calcium Sulfate Whiskers
[0077] A1: Cut the calcium sulfate whiskers to a length of 0.3mm, add them to a sufficient amount of absolute ethanol, ultrasonically clean them for 25 minutes, filter, wash the calcium sulfate whiskers with deionized water for 2-3 times, and remove them. , fully dried to obtain clean calcium sulfate whiskers;
[0078] A2: Add clean calcium sulfate whiskers to dehydrated alcohol of 9 times its mass, then slowly add the dehydrated ethanol solution of isopropyl orthosilicate (the clean calcium sulfate whiskers and isopropyl orthosilicate The mass ratio of the isopropyl orthosilicate is 1:0.5, and the mass percentage concentration of the isopropyl orthosilicate is 25%), stirred and reacted for 50 minutes, filtered, and the obtained whiskers were fully washed 3-4 times with deionized water, dried, and The obtained dried whiskers were calcined at 320° C. for 35 minutes, and cooled naturally to room temp...
Embodiment 1
[0080] S1: According to the weight ratio of 2:1:1, weigh phenol A type epoxy resin, methacrylic acid-butadiene-styrene terpolymer (MBS resin) and polyvinyl chloride, and use a high-speed mixer to carry out Fully and evenly mixed to obtain 80 parts by weight of resin masterbatch;
[0081] S2: Add 1 part by weight of the modified calcium sulfate whisker obtained in the preparation example, 1 part by weight of the stabilizer isooctyl dimethyl tin dimercaptoacetate, and 3 parts by weight of the toughening agent methyl methacrylate into the above resin masterbatch -butadiene-styrene terpolymer (MBS), 0.4 parts by weight of nano carbon black, 3 parts by weight of dilaurate thiodipropionate, 1 part by weight of two-component antioxidant (for mass ratio 1: 1 Tris(2,4-di-tert-butylphenyl)phosphite and 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl base) benzene mixture), 0.8 parts by weight of adhesion promoter formula (I) compound, 6 parts by weight of auxiliary agent (...
Embodiment 2
[0084] S1: According to the weight ratio of 2:1:1, weigh phenol A type epoxy resin, methacrylic acid-butadiene-styrene terpolymer (MBS resin) and polyvinyl chloride, and use a high-speed mixer to carry out Fully and evenly mixed to obtain 80 parts by weight of resin masterbatch;
[0085] S2: Add 0.5 parts by weight of the modified calcium sulfate whisker obtained in the preparation example, 2 parts by weight of the stabilizer isooctyl dimethyl tin dimercaptoacetate, and 2 parts by weight of the toughening agent methyl methacrylate into the above resin masterbatch -butadiene-styrene terpolymer (MBS), 0.8 parts by weight of nano carbon black, 2 parts by weight of dilaurate thiodipropionate, 1.6 parts by weight of two-component antioxidant (for mass ratio 1: 2 Tris(2,4-di-tert-butylphenyl)phosphite and 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl base) benzene mixture), 0.5 parts by weight of adhesion promoter formula (I) compound, 8 parts by weight of auxiliary ...
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