Gel Pen's Adaptability

Lithium -based ester is an organic material located at the neutral pen end and is used to seal the neutral ink in the ink pipe. The traditional oily round bead pen can not fill the lithium ester. Because the oily round bead pen ink is a dilemma volatile substance, there is basically no ink caused by the volatilization of the solvent. The neutral ink irrigated in the neutral pen is mostly water-low-carbon alcohol suspension of pigment, which is exposed to dry air for a long time, which causes the ink to be adhesive and cannot be written normally. In addition, low viscosity with low viscosity The neutral ink will flow back in the ink pipe, and the lithium -based ester also plays a role in preventing the inverted ink. Lithium -based ester should not dissolve with neutral ink, clear interface, no turbidity, and ink tube air bubbles after pens are easy to remove. Lithium-based ester is mostly polycoticoxane substances. It does not dissolve with water, is oil, has good high and low temperature stability, does not freeze -20 ° C without frozen, 80 ° C without overflow, evaporation, and excellent liquidity. Excellent lithium -based ester can still maintain a good moisturizing seal when the temperature changes greatly, preventing the ink from evaporating or overflowing. Until the ink is completely written.

There are many types of neutral pens on the market. According to the pen head, there are stainless steel, nickel -white copper, lead brass, etc.; According to the different material of balls, it can be divided into tungsten carbide balls, modified ceramic balls, etc Different, it can also be a bullet, gourd head, needle tube head, etc. In recent years, the inner diameter of the neutral pen core has changed a lot, and the ink pipes from 2.0mm to 7.0mm have occurred. Single, the length of the single-branch writing has been increased from 400-500m to nearly 2000m. The wear resistance of the pen and the sealing of lithium-based esters and the performance of the randomness have been put forward higher requirements.