Light polymer base fibrilia reinforced composite and fabrication method thereof

Abstract

The invention discloses a light polymer base fibrilia reinforced composite which comprises the following raw materials in parts by weight: 10-15 parts of kenaf fiber, 100 parts of homo-polypropylene, 2.5-5 parts of compatibilizer, 5-20 parts of weight reducing agent and 0.1-0.15 parts of coupling agent. In addition, the invention further discloses a fabrication method of the light polymer base fibrilia reinforced composite. The composite adopts a hollow glass microsphere, so that a weight reducing effect is stable; the density of the composite is controllable; mutual interference between the compatibilizer such as maleic anhydride grafted polymer and a chemical foaming agent can be avoided effectively; the action of the compatibilizer is exerted fully; the property of the composite is improved; requirements of the composite on both the mechanical property and the density are met; and the hollow glass microsphere is an inorganic substance, is tasteless and colorless, and does not affect an application of the composite in the field of automotive trim.

Description

technical field [0001] The invention relates to a lightweight polymer-based hemp fiber-reinforced composite material and a preparation method thereof, in particular to a light-weight polymer-based hemp fiber-reinforced composite material prepared by using hollow glass microspheres and a preparation method thereof. Background technique [0002] Hemp fiber is a large category of natural organic fillers, the main component of which is natural cellulose. The common types of hemp fiber are sisal, kenaf, flax, jute, ramie, hemp, kenaf and so on. After the hemp fiber is evenly mixed with polymer matrix such as thermoplastic or thermosetting resin, it can be made into automotive panels, automotive interior parts, etc. by injection molding, compression molding and other molding methods. Hemp fiber is a natural renewable resource with rich sources and low price. Using hemp fiber and synthetic resin to prepare interior parts such as car roofs and seat back panels has certain environme...

AI Technical Summary

Problems solved by technology

The reasons are: ⑴The chemical foaming process is difficult to accurately control, resulting in large fluctuations in the density of composite materials, and it is difficult to form products with stable quality; ⑵AC foaming agent is an exothermic foaming agent, which must release a certain amount of heat during the foaming process , it is easy to cause the size of the holes formed in the material to be different, and even the holes are formed locally to collapse, which seriously affects the mechanical properties of the composite material.

(3) In the prior art, compatibilizers such as maleic anhydride grafts are often used to improve the mechanical properties of composite materials, but maleic anhydride grafts will interfere with the chemical foaming process, making it difficult to balance the performance and density of composite materials

(4) Chemical substances such as AC foaming agent and DCP crosslinking agent used in the chemical foaming method will release unpleasant taste, which is not conducive to the application of composite materials in automotive interior parts