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Polymer toughening and reinforcing method

A polymer and toughening technology, which is applied in the modification of polymer toughening and enhancement, and in the field of polymer modification, can solve the problems of rigidity decrease and polymer toughness decrease, so as to improve rigidity and impact toughness, and improve compatibility and the effect of interfacial bond strength

Inactive Publication Date: 2021-06-22
摩特卡(杭州)进出口贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the rigidity of a single elastomer toughened polymer will decrease and the reinforcement of a single rigid particle will cause a decrease in the toughness of the polymer, the present invention provides the following technical solution, that is, a method for polymer toughening and strengthening, the polymer The method for toughening and strengthening comprises the following process steps:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: A kind of method of polypropylene toughening and strengthening

[0016] A method for toughening and strengthening polypropylene, the process steps are as follows:

[0017] A. First, the elastomeric EPDM rubber and the micron-sized calcium carbonate rigid particles modified by nanoacicular calcium carbonate on the surface are mixed together according to a mass ratio of 40:60 and then granulated to obtain elastomer-coated inorganic rigid particles. Toughening masterbatch; wherein the temperature of the internal mixer is set to 180°C, the rotating speed is 60r / min, and the time is 20min;

[0018] B. Mix the toughened masterbatch and polypropylene resin obtained in step A evenly according to the mass ratio of 40:60, and then mix and granulate through a twin-screw extruder to obtain a polypropylene-based composite material with both rigidity and toughness. The temperature of the extruder is set at 160-180°C, and the rotation speed is 100r / min; finally, the pol...

Embodiment 2

[0020] Embodiment 2: A kind of method of polypropylene toughening and strengthening

[0021] A method for toughening and strengthening polypropylene, the process steps are as follows:

[0022] A. First mix the elastomeric EPDM rubber and the micron-sized calcium carbonate rigid particles without modification on the surface according to the mass ratio of 40:60 and then granulate them to obtain the toughened masterbatch of elastomer-coated inorganic rigid particles ; Wherein the temperature of the internal mixer is set to 180°C, the rotating speed is 60r / min, and the time is 20min;

[0023] B. Mix the toughened masterbatch and polypropylene resin obtained in step A evenly according to the mass ratio of 40:60, and then mix and granulate through a twin-screw extruder to obtain a polypropylene-based composite material with both rigidity and toughness. The temperature of the extruder is set at 160-180°C, and the rotation speed is 100r / min; finally, the polypropylene-based composite...

Embodiment 3

[0025] Embodiment 3: A kind of method for polyamide 6 toughening and strengthening

[0026] A method for toughening and strengthening polyamide 6, the process steps are as follows:

[0027] A. First, the elastomeric EPDM rubber and the micron-sized calcium carbonate rigid particles modified by nanoacicular calcium carbonate on the surface are mixed together according to the mass ratio of 30:70 and then granulated to obtain elastomer-coated inorganic rigid particles. Toughened masterbatch; wherein the temperature of the internal mixer is set to 180°C, the speed is 60r / min, and the time is 30min;

[0028] B. Mix the toughened masterbatch and polyamide 6 resin obtained in step A evenly according to the mass ratio of 50:50, and then mix and granulate through a twin-screw extruder to obtain a polypropylene-based compound with both rigidity and toughness. material; the temperature of the extruder is set at 210-220°C, and the rotation speed is 100r / min; finally, the polypropylene-ba...

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Abstract

The invention provides a toughening and reinforcing method for preparing polymer resin with rigidity and toughness. The method comprises the following steps: firstly, internally mixing and granulating an elastomer and rigid inorganic particles to obtain a toughening master batch of the elastomer coated inorganic rigid particles; and then extruding and granulating together with the polymer resin by using a twin-screw extruder to obtain the toughened polymer resin with rigidity and toughness at the same time. According to the method provided by the invention, the effects of reinforcing and toughening the polymer resin can be achieved.

Description

technical field [0001] The invention relates to the technical field of polymer modification, in particular to the technical field of polymer toughening and strengthening modification. Background technique [0002] Common polymer materials such as polypropylene, polyethylene, polyamide 6 and polyamide 66 have excellent molding and processing properties and are widely used in our daily necessities, agriculture, military and automotive industries. However, pure polymer resins generally have the problems of low rigidity and low strength. It needs to be reinforced by inorganic particles, glass fibers, etc., and the effect is extremely obvious. However, while the rigidity of the polymer increases, the toughness of the polymer itself also decreases significantly, that is, the brittleness also increases significantly. Therefore, there is a need for a polymer modification technology that can both strengthen and toughen. [0003] The modification methods for polymers mainly include ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/22C08L23/16C08L23/08C08K9/02C08K3/26C08K3/34C08K7/08C08L23/12C08L23/06C08L77/02C08L77/06
CPCC08J3/226C08J2323/06C08J2323/12C08J2377/02C08J2377/06C08J2423/08C08J2423/16C08K3/34C08K7/08C08K9/02C08K2003/265
Inventor 刘威锋钮博翔董玉田
Owner 摩特卡(杭州)进出口贸易有限公司
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