Mother material for environment protecting shinny stone granules

Abstract

A degradable mother material with glittering granules consists of calcium carbonate 85wt%; polyolefin 13wt%, and auxiliary 2wt% containing aluminate coupling agent 0.5wt%, olefin-cracked wax with high melting point 0.2wt%; stearic acid 0.5wt%, iron-ion containing free radical reducing agent 0.1wt%, olefin-cracked wax with high molecular weights 0.2wt%, ethylene stearamide 0.3wt%, plant oil 0.1wt% and alcohol 0.1wt%. Olefin chains are broken by light radiation, oxidation and bacteria degradation. The mother material is mixed with polyolefin and calcium carbonate to increase their physical performance and decrease cost.

Description

technical field [0001] The invention relates to plastics, in particular to a masterbatch of degradable and fillable environmental bright stone particles. Background technique [0002] The filler masterbatches used in the production of plastics in the market are mostly made of calcium carbonate + polyolefin + additives (polyethylene wax, titanium dioxide, zinc stearate), plus a coupling agent for activation treatment. Although 80% calcium carbonate can be mixed in this masterbatch, when using this masterbatch to make products, the ratio of adding this masterbatch is very low, it is difficult to exceed 30%, and its brittleness is very high, toughness is not enough, and it is impossible to make a disposable Supplies degrade. [0003] Therefore, at present, calcium carbonate is used as an additive to produce plastic masterbatches, which can only be limited to paper, disposable tableware, some garbage bags, packaging bags, etc., and when it is used as garbage incineration, it on...

AI Technical Summary

Problems solved by technology

Although 80% calcium carbonate can be mixed in this masterbatch, when using this masterbatch to make products, the ratio of adding this masterbatch is very low, it is difficult to exceed 30%, and its brittleness is very high, toughness is not enough, and it is impossible to make a disposable Degradation of supplies

[0003] Therefore, at present, calcium carbonate is used as an additive to produce plastic masterbatches, which can only be limited to paper, disposable tableware, some garbage bags, packaging bags, etc., and when it is used as garbage incineration, it only reduces resin. The toxic waste gas produced cannot be used as a filler for all PP and PE products, let alone the incineration method, so as to achieve the effect of natural degradation in burial or accumulation

[0004] The method of mixing calcium carbonate + polyolefin + additives as a filler masterbatch for polyolefin products has a history of more than 20 years. Although, in recent years, when using coupling agents for activation treatment, some manufacturers use A high dose of 2.5% and secondary blending, combined with the improvement of mechanical technology, can increase the amount of calcium carbonate added to 80%, 14% for polyolefin, and 6% for additives. However, its disadvantage is coupling Adding too many additives will increase the cost, and the activation treatment time will take 20 minutes, which will prolong the production cycle and reduce the output. If the proportion of 6% additives is too high, it will increase the cost, and the components of the additives are still the old three, namely polyethylene Wax, titanium dioxide, zinc stearate, although 80% calcium carbonate can be added to the masterbatch in the composition of this formula, it is difficult to add more than 30% of this masterbatch when manufacturing products, and it is impossible to overcome a large amount of calcium carbonate. Brittle hardness caused by calcium carbonate; when adding more than 30% of the masterbatch containing 80% calcium carbonate, the physical properties of some products will be lost and easy to be brittle

Vertically, the cost of this kind of masterbatch composed of plasticizer, lubricant, dispersant, and coupling agent is relatively high. Because the activation process takes 20 minutes, the production cycle is prolonged and the production efficiency is reduced; the increase of various additives , it will increase the cost, so it can only be used for the manufacture of blown film or blister products, and the scope of use is limited