Material special for breathable film with antiflaming effect and preparation method thereof

Abstract

The invention discloses a material special for a breathable film with antiflaming effect and a preparation method of the material special for the breathable film with the antiflaming effect. The material special for the breathable film with the antiflaming effect is composed of the following component: by weight, 55-76 parts of linear low density polyethylene, 12-15 parts of high pressure low density polyethylene, 4-6 parts of styrene thermoplastic elastomer, 0.5-3 parts of antiflaming agent A, 3-8 parts of antiflaming agent B, 2-4 parts of surface treating agent, 35-65 parts of filling agent, 4-6 parts of styrene thermoplastic elastomer, 0.3-0.5 part of lubricant, and 0.4-0.6 part of antioxidizer. The components are put in a blender or a high-speed blending machine to be fully premixed in proportion, and then a double screw extruder is used for fusing and blending to extract granulation. The material special for the breathable film with the antiflaming effect has good processing features, and water vapor transmission rate (WVTR) of the breathable film prepared from the material special for the breathable film with the antiflaming effect can achieve 1800-200 grams / (m 2* 24 hrs), and antiflaming effect can achieve DIN 4102-B2.

Description

technical field [0001] The invention relates to a preparation method of a film, in particular to a special PE material for a breathable film with a flame-retardant effect and a preparation method thereof. Background technique [0002] The breathable film can be prepared by mixing a specific thermoplastic polymer with a certain proportion of mineral fillers to prepare the corresponding special material for the breathable film, cast into a film or blown into a film through an extruder, and then stretch it longitudinally or transversely. , with waterproof and breathable function. The market prospect of breathable film is still generally optimistic in the industry, and it can be widely used in textiles, sanitary products, construction, medical treatment and other fields. These industries have higher and higher requirements for the multi-functionality of membrane products. Among them, especially in the construction field, the flame retardancy of breathable membranes is more and ...

AI Technical Summary

Problems solved by technology

However, breathable membranes made of PE are often not flame retardant, which limits their application range.

This is because the flame retardant of PE is usually modified by a large amount of inorganic or organic flame retardants. However, due to the poor compatibility between flame retardants and PE, the addition of a large amount of flame retardants will lead to the flame retardancy of the breathable film. The material will greatly lose physical properties, and it is difficult to form a film on an extrusion casting machine or a blow molding machine