A kind of anti-collision sports protective gear and its preparation and application
A sports protective gear and anti-collision technology, applied in sports accessories, chemical instruments and methods, synthetic resin layered products, etc., can solve problems such as single function, achieve good fitness, good anti-collision effect, and impact strength high effect
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Embodiment 1
[0029] Embodiment 1: Preparation of cellulose nano whiskers
[0030] Rice straw is used as raw material, and the rice straw is immersed in an alkaline solvent system for treatment. The alkaline solvent system contains NaOH and NaOH 2 SO 3 Aqueous solution, by adding NaOH and Na 2 SO 3 It is prepared by dissolving in water, the ratio of NaOH concentration is 20g / L, NaOH 2 SO 3 The concentration is 15g / L; the treatment time is 2h, the temperature is 110°C, and the liquor ratio is 1:10. After the treatment, take it out and wash it, and dry it in a vacuum oven at 60°C to constant weight; use a pulverizer to pulverize the purified rice straw fiber, pass it through a 50-mesh sieve, and obtain rice straw fiber powder;
[0031] Put the rice straw fiber powder in the TEMPO oxidation system, the TEMPO oxidation system is prepared by dissolving TEMPO, NaClO, and NaBr in water, and the proportion is 0.02g / L TEMPO, 150g / L NaClO, 0.15g / L NaBr , the bath ratio is 1:30, the pH value of ...
Embodiment 2
[0034] Embodiment 2 prepares shear thickening liquid
[0035] Be that 40wt% nano tourmaline powder and mass ratio are 5wt% hydrochloric acid (concentration is 30%), mass ratio after the nanocellulose colloid that 55% embodiment 1 makes is mixed, put into high-speed disperser, in Disperse at room temperature (25°C) at 12000rpm for 30min to form tourmaline colloid;
[0036] After mixing the silane coupling agent (model KH-560) with a mass ratio of 10 wt% with 88 wt% hydroxyl silicone oil and 2 wt% polyurethane organotin catalyst (CAS No. 301-10-0) , put it into a high-speed disperser, and disperse at 12000rpm at 40°C for 20min to form a silicon-based dispersion;
[0037]After mixing the tourmaline colloid with a mass ratio of 28wt% with the silicon-based dispersion liquid with a mass ratio of 70wt% and the plasticizer with a mass ratio of 2wt%, put it into a high-speed disperser and disperse at 12000rpm for 30min at 40°C. A shear thickened fluid is formed.
Embodiment 3
[0039] Such as figure 1 As shown, a kind of anti-collision sports protector (knee protector), comprises protector shell 1, and protector shell 1 is provided with anti-collision bag 2, and anti-collision bag 2 is provided with shear thickening liquid 3.
[0040] The protective gear shell 1 includes a surface layer and an inner layer arranged on the inner side of the surface layer. Both the surface layer and the inner layer are made of polyester-cotton blended fabric; the surface layer fabric and the inner layer fabric are sewn together to form the protective gear shell 1. An opening 4 is left to put into the anti-collision bag 2, and ropes 5 are respectively fixed at the four corners inside the protective gear shell 1 to fix the anti-collision bag 2.
[0041] The anti-collision bag 2 is a polyurethane coated woven fabric; the thickness of the anti-collision bag 2 is 2 cm, and ropes 5 are respectively fixed at the four corners for fixed connection with the inside of the protecti...
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