SU414097A1 - METHOD OF PREPARATION OF SUNFLOWER SEEDS BOWERS - Google Patents

Description

one

This invention relates to the building materials industry.

Methods are known for preparing husk by breaking this. n, chopping husk, drying.

The disadvantage of this method is its low efficiency due to the fact that the expensive product - wax disappears.

The purpose of the invention is to increase the efficiency of the method.

This is achieved by subjecting the sunflower seeds to sanding before waxing to remove the wax.

The technological process of making husk construction plates is as follows. Sunflower seeds after drying them to a moisture content of 8-10% are ground in: grinding machines. The ground dust is then extracted to obtain vegetable wax, and the seeds are crushed. The resulting husking / drying of the husk | dries to a moisture content of 2-4%, crushed on hammer crushers and mixed with a binder. The resulting mass is formed into a carpet, pressed in a cold press and subjected to hot pressing according to previously developed modes. After pressing, the plates are kept in the pro, out of the internal room for 5 days and cut to the desired size.

Example. Sunflower seeds are loaded into a grinding machine, which is a drum, inside which the shaft with blades rotates. All internal surfaces of the drum are lined with sandpaper No. 25. Sanding is carried out for 5 minutes. The rotational speed of the shaft is 200 rpm. The dust is separated from the cEMN and the seeds are plated. The husks are ground in a hammer mill and dried in a laboratory dryer to a moisture content of 2–4%, and the iB laboratory mixer is mixed with a binder based on a UKS resin. Ammonium chloride serves as a hardener, which is added to the resin in the amount of 0.5%. The concentration of the binder in this case is 50%, the viscosity is 20 sec according to VZ-4. The binder consumption is equal to 12% of the dry weight of absolutely dry husk. The carpet is glued with glued husk with a height of 100 mm, which corresponds to the density of future PLATES of about 650 ke / m with a thickness of finished plates of 16 mm. The formed carpet is pressed in a cold press and then loaded into a hot press. The dimensions of the press plates should be equal to 500 X 500 mm. Pressing is carried out at the following mode: the temperature of the press plates -

150 ° C, pressing pressure of 20 kg / cm, pressing time 12 minutes.

After the pressing, the plates are kept in room conditions for 5 days and subjected to f, from, and, coamera |

Physical and mechanical properties of the obtained plates are given below.

Density, ke / lg 0.64

Strength at static bend, kg / cm 180

Tensile strength

when stretching the perpei4 .5 ryuku ryu plasti, kg / cm

The method of preparing Seeds and sunflower husk for the manufacture of building boards by breaking and seeding, grinding the husks and drying, characterized by the fact that, in order to improve the strength of the nlit and increase the efficiency of the seed, the sunflower family before the collapse; to remove wax cover.