Nanomaterials improve the mechanical properties of rubber suction cups

Practice has proved that when the fineness of different kinds of fillers reaches nanometer level, the various mechanical properties of the suction cup can be greatly improved, and the compound of N330 (corresponding to the new process carbon black of high wear-resistant carbon black) can be greatly improved. The mechanical performance gap is greatly reduced.

For example, in the case of the same filling amount, the tensile strength of the rubber containing nano-aluminum oxide can reach 97.3% of that of N330 rubber. Even after the nano-calcification of light calcium carbonate, the mechanical properties of the rubber can reach 85.5% of N330. . Therefore, for common fillers such as light calcium carbonate, the introduction of nanotechnology is a desirable way to upgrade the suction cups, which can not only take advantage of the advantages of cheap raw materials, abundant sources, but also improve the grade of products;

(2) Reduction of vulcanization system

Tests show that nano-scale zinc oxide (particle size 50nm) is used as the vulcanization activator to replace ordinary zinc oxide (particle size 55Onm). Under the premise that the vulcanized rubber quality is not affected, the dosage can be reduced from 5 parts to 2 parts. This reduction is based on a significant increase in specific surface area after zinc oxide nanocrystallization. Similarly, nano zinc oxide can be used as a vulcanizing agent for chloroprene rubber, and the amount can be reduced from 5 parts to 3 to 4 parts.

(3) Anti-photoaging

Any nano-scale compounding agent can resist photoaging. This is because they have a large specific surface area and a strong ability to absorb and reflect ultraviolet rays, and can effectively suppress photoaging.

(4) Flame retardant

Some of the nanostructures of the lamellar structure (typically represented by nano-ceramics) have a large flatness of the structure, which lengthens the heat transfer process, is beneficial to the amount of heat insulation, and can play a certain auxiliary flame retardant effect, and can manufacture a flame-retardant sucker.

(5) Shockproof

Tubular nanocarbon black also has anti-shock effects. Can meet the needs of automotive anti-shock damping
It is also applicable to bridge damping supports.

(6) Airtight

The addition of nano-scale clay materials to rubber is based on the fact that the sheet-like structure of clay-based nanomaterials has a large flatness and a strong binding force with rubber. Therefore, the production of gas molecules is also large. In addition, the chemical composition and morphological structure of nanomaterials are also critical. The chemical composition is best for silicates, while the geometry is ideal for sheets. The nano-scale clay with sheet structure (represented by montmorillonite) has the advantages of these two aspects, and the airtightness is the most prominent.

(7) Sterilization

Nano-sized metal oxides (such as zinc oxide, titanium dioxide, silver-based compounds) are all photocatalytic semiconductor materials, which can kill bacteria in the effective radius and have good effects.

(8) Electrostatic shielding

Powder nanomaterials (such as nano titanium dioxide, nano light calcium carbonate) have electrostatic shielding function, suitable for antistatic suction cups.

(8) Radiation shielding

After the nanomaterial is filled in rubber to 20 parts, it has anti-radiation function and can be used as a shielding material against electromagnetic interference.

(10) Whitening

Due to the large specific surface area and reflective surface of the nanomaterial, it can play a role in whitening and brightening. The whiteness can be increased by 2 to 3 degrees compared to non-nano-scale homogeneous materials on the premise of equal filling. Nano-scale titanium dioxide has this advantage.

(9) Heat resistant

It is most prominent in nano-scale silica, its average particle size is 20nm, and it has many functions such as high temperature resistance, wear resistance and heat conduction. However, due to the fineness of the particles, the dispersion in the rubber is difficult, and a coupling agent is added for modification. The use of nano-sized fillers can significantly improve the service life of heat-resistant rubber suction cups under dynamic conditions.

From the chemical structure point of view, nanomaterials can be divided into two major categories of metal and non-metal, and
At present, the application of rubber suction cups is mostly non-metallic.