Thermoplastic elastomer capable of coating and bonding with nylon

Abstract

The invention provides a thermoplastic elastomer coated and bonded by nylon, comprising matrix resin, softened plasticizer, adhesion promotor, mineral filler, lubricant and stabilizer, wherein the weight percentage of the material is as follow: resin 20-75%, softened plasticizer 5-45%, adhesion promoter1-30%, mineral filler 0-3%, compatiblizing agent 5-35%, lubricant 0-2%, stabilizer 0-2%. The matrix resin also comprises: thermoplasticity polyurethane elastomer or polymerized silica block amide copolymer, which makes the thermoplastic elastomer with good physical property, in addition a great variety of compatiblizing agents are used, therefore each component fully and mutually dissolves with each other to reduce the occurence of delamination, and the solubility of the composite material to the other engineering plastics, so that the thermoplastic elastomer is firmly adhesive on the surface of the nylon material without any bonding agent by twice injection of plastic jetting-moulding machine or extruder, and coating adhesive on the material such as ABC, PC. The market prospect is increased.

Description

technical field [0001] The invention relates to the field of polymer materials. It is a kind of adhesive that can be firmly bonded to the surface of nylon materials only through secondary injection molding of an injection molding machine or co-extrusion of an extruder without using any adhesive. In addition, it can also be bonded to such as ABS, Thermoplastic elastomer materials on the surface of highly polar polymer materials such as PC. Background technique [0002] Thermoplastic elastomer is a new type of material that combines the excellent properties of thermoplastics and rubber. It can be molded alone, or it can be firmly coated on PP by secondary injection molding or extruder co-extrusion without any binder. , PE, PS, ABS, PC and other plastic materials, so as to make the inner hard polymer skeleton, and the outer layer is a soft elastomer product. Therefore, it is widely used in the handles of households, toys, and various tools to achieve elastic, rigid, and non-sl...

AI Technical Summary

Problems solved by technology

The publication number disclosed by the Chinese patent is "CN1765984A", "a thermoplastic elastic material and its preparation method", which uses thermoplastic polyurethane as the basic raw material, and this product is limited to the secondary overmolding of ABS materials, and has Certain limitations have affected the market development of this material

The publication number published by the Chinese patent is "CN1931919", "a thermoplastic elastomer for secondary injection bonding with nylon material", and the product made by using the raw material ratio of this technology, when the material hardness is Shore 70A, its The tensile breaking strength is only 4.0Mpa, and the tensile breaking elongation is only 400%. The lower material physical properties will greatly limit the application of this material

The publication number is "CN1930237A", "block copolymer for overmolding any nylon", which can be coated with any nylon, and the material strength of this product is between 370psi and 580psi, that is, in the range of about 2.5 to 4Mpa. The elongation is in the range of 140% to 610%, and there are also disadvantages of low material strength and poor elasticity

To date, the physical properties of various thermoplastic elastomers have been deficient

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