Processing method of low-expansion-coefficient nylon heat-insulating strip master batch

Abstract

The invention discloses a low-expansion-coefficient nylon heat-insulating strip master batch. The master batch is prepared from nylon 66 resin, alkali-free glass fibers, an antioxidant, calcium sulfate whiskers, black master batch and inorganic filler according to the mass ratio of 50 to 25 to 0.8 to 11.5 to 0.7 to 12. The invention also discloses a processing method of the master batch. The processing method comprises the following steps of step 1, preparing raw materials; step 2, premixing the raw materials; step 3, melting the raw materials and granulating; step 4, screening; and step 5, cleaning and drying. The master batch can be screened, cleaned, dried in a same device, labor consumption and energy consumption are effectively reduced, movement of multiple devices of the master batchis avoided, abrasion damage to the master batch is reduced, the quality of the master batch is better, nylon 66 resin is adopted as a raw material of the master batch, the master batch has the characteristics of high mechanical strength, high melting point and the like, so that the melt-extruded master batch has the advantages of low expansion coefficient, high heat resistance, high strength, high toughness and the like.

Description

technical field [0001] The invention belongs to the field of processing heat-insulating strips, and in particular relates to a processing method for masterbatches of nylon heat-insulating strips with low expansion coefficient. Background technique [0002] Heat insulation strip is a kind of insulation product used for building doors and windows. It plays a role in reducing heat conduction and structural connection in metal heat insulation profiles. It has been widely praised and applied in the current market, and heat insulation strip masterbatch is a kind of The raw materials used to produce heat insulation strips include particles of different components. The difference in processing raw materials for heat insulation strips is the key to affecting the effect of heat insulation strips. The heat insulation strips will expand due to the influence of temperature, which affects the heat insulation strips. Structural connection in metal, so a heat insulation strip masterbatch wi...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many processing steps for heat insulation strip masterbatch. From the preparation of masterbatch raw materials to the later production, many devices need to be used, which consumes too much manpower and time, resulting in high production cost of masterbatch, and the production time of masterbatch is too high. It needs to be moved from multiple devices, causing great wear on the masterbatch and reducing the quality of the masterbatch

Images