Cellulose diacetate composite material with semi-interpenetrating network structure and preparation method thereof

Abstract

The invention discloses a cellulose diacetate composite material with a semi-interpenetrating network structure and a preparation method thereof.The preparation method is characterized in that after cellulose diacetate and epoxy resin are mixed, epoxy resin dispersed in the mixture is cured, and the semi-interpenetrating network structure is formed; the composite material is prepared from, by mass, 100 parts of cellulose diacetate, 5-50 parts of epoxy resin, 5-20 parts of camphor, 100 parts of acetone and 2-20 parts of a curing agent.The tensile strength and breaking elongation of the cellulose diacetate composite material are remarkably improved.Use of plasticizer is avoided, harm of the plasticizer to human bodies and the environment is greatly reduced, high temperature during melting is also avoided, and energy consumption is reduced.The preparation method is simple, industrialization is easy, and the preparation method can be widely used in glass frames, toys for children, table tennis balls, thin films, 3D printing consumables, automobiles, household appliance consumables and other plastic products for daily use.

Description

technical field [0001] The invention relates to the field of cellulose diacetate materials, in particular to a cellulose diacetate composite material with a semi-interpenetrating network structure and a preparation method thereof. Background technique [0002] Cellulose Acetate (Cellulose Acetate, or cellulose acetate, cellulose acetate), first prepared in 1865, is the acetate of cellulose. Cellulose diacetate refers to a thermoplastic resin obtained by esterifying acetic acid as a solvent and acetic anhydride as an acetylating agent under the action of a catalyst. It is the earliest commercial production of cellulose derivatives and is constantly developing. Cellulose organic acid ester. Cellulose is the main component of green plants. It is rich in resources and has a wide range of sources. It can be produced in large quantities by artificial cultivation. [0003] The cellulose diacetate molecular chain contains a large number of polar groups such as hydroxyl groups and ...

AI Technical Summary

Problems solved by technology

[0003] The cellulose diacetate molecular chain contains a large number of polar groups such as hydroxyl groups and acetyl groups. The molecular chain is rigid, the intermolecular interaction force is relatively large, and the mobility of the molecular chain segments is poor, which endows the cellulose diacetate material with Greater strength and hardness, but also makes the toughness of cellulose diacetate products particularly poor, the elongation at break of pure cellulose diacetate products is less than 10%

Therefore, the addition of plasticizers has played a certain role in improving the processing technology of cellulose diacetate, but its comprehensive performance is not obvious