There are three main functional masterbatches commonly used in plastic agricultural film:

1. Agricultural film commonly used as a masterbatch for agricultural film anti-fog drop masterbatch

Most of the antifogging agents are partial esterified products of fatty acids and polyhydric alcohols. Commonly used fatty acids are saturated or unsaturated acids of C11 to C22. Commonly used polyols are glycerin, sorbitol and anhydrides thereof. In general, the ester of medium-chain fatty acids has a good initial anti-fog effect, and the long-chain fatty acid ester has a good anti-fog effect.

The antifogging agent is generally not more than 20% in the master batch. Since the antifogging agent is a surfactant-based compound and has a certain lubricity, when the content in the master batch reaches a certain level, excessive lubrication may occur and granulation may not occur.

2, plastic film commonly used functional masterbatch of agricultural film insulation masterbatch

After the insulating masterbatch is added to the agricultural film, it has little effect on the light transmittance of the film, but it can block the ultraviolet rays harmful to the crop during the daytime, and can prevent the loss of a large amount of infrared rays at night and increase the temperature inside the shed. Compared with the ordinary shed film, the insulating masterbatch can increase the average shed temperature by 1-2 °C, the unit yield by 40%-50%, and the harvest period about 10 days earlier, which has obvious economic and social benefits.

The ground temperature at night mainly radiates heat stored during the day in the form of infrared rays, resulting in a decrease in the temperature inside the shed. Therefore, the active ingredient of the masterbatch is an infrared blocker.

3, the plastic film commonly used in the functional masterbatch of the multi-functional agricultural film special masterbatch

The masterbatch is added to the agricultural film, so that the agricultural film has various functions such as anti-aging, anti-fog, anti-static, heat preservation, etc., so that the ideal agricultural film is used for the multifunctional masterbatch.

The masterbatch was developed on the basis of a polyolefin anti-aging masterbatch and an anti-fog drip film masterbatch. In addition to antioxidants, light stabilizers (hindered amines), composite anti-fogging agents (with initial, long-lasting, high-temperature and low-temperature anti-fogging properties), plus insulation filler (genus SiO2) and a small amount of anti-static Agents and other additives are compounded. The carrier resin may be selected from LDPE resins having a melt flow rate (MFR) of 2 g/10 min.