2results about How to "Guarantee friendliness" patented technology

The utility model provides a slingshot releasing device which comprises a movable arm and a fixed combination table, the movable arm is installed on the fixed combination table, a trigger mechanism is arranged on the fixed combination table, and the trigger mechanism is in transmission connection with the movable arm and used for driving the movable arm to release a shot. The fixed combination table is connected with a holding seat, a universal joint is connected between the holding seat and the fixed combination table, and the holding seat is used for being held by a user. The problem of trajectory deviation caused by the holding posture is solved through the spherical hinge holding seat, and the shooting accuracy is remarkably improved.

This invention relates to the field of polymer material synthesis technology, specifically disclosing a water-dispersible cationic polyacrylamide material and its preparation method. The material is composed of the following raw materials in parts by weight: 45-50 parts modified acrylamide, 15-20 parts cationic monomer, 5-10 parts N-vinylpyrrolidone, 0.8-1.2 parts surfactant, 90-100 parts deionized water, 0.1-0.5 parts crosslinking agent, 3-8 parts hyperbranched polyester Boltorn (H₂O), 0.08-0.12 parts ammonium persulfate, 0.03-0.05 parts sodium bisulfite, and 0.5-0.8 parts aluminum citrate. The preparation process of this invention is simple and highly operable. The provided polyacrylamide material has a high specific surface area, excellent water dispersibility, good stability, and salt resistance, making it suitable for various industrial applications such as water treatment and papermaking, exhibiting good flocculation performance and reinforcing effects.