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Method for preparing chemical compound type macromolecular toughening brightening additive used for plastics and product thereof

A thermoplastic polymer and polymer technology, applied in the field of polymer toughening and whitening agent and its preparation, can solve the problems of decreased mechanical properties of products, easy decrease in whiteness, exudation, etc., and achieve improved mechanical properties, whitening and brightening effects. improved effect

Inactive Publication Date: 2013-02-13
湖南神谷新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a traditional method has the following disadvantages: (1) It is difficult to mix and disperse them uniformly, which affects the effect of whitening, brightening and toughening; Light resistance and long-term hot temperature environment, easy to reduce whiteness, easy to lose luster
(3) Inorganic whitening agent powder has poor compatibility with many resins, which reduces the mechanical properties of the product, and is easy to precipitate and pulverize; (4) When processed into products, the powder pollutes the production environment

Method used

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  • Method for preparing chemical compound type macromolecular toughening brightening additive used for plastics and product thereof
  • Method for preparing chemical compound type macromolecular toughening brightening additive used for plastics and product thereof
  • Method for preparing chemical compound type macromolecular toughening brightening additive used for plastics and product thereof

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Experimental program
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Effect test

Embodiment 1

[0022] 1) Dilute 0.25 parts of vinyltriethoxysilane coupling agent with 1:1 methanol and spray it on 20 parts of titanium dioxide powder under stirring, keep it for 5-30 minutes, and control the temperature at 50 Below ℃, it becomes the inorganic whitening agent anchoring the coupling agent;

[0023] 2) Mix the titanium dioxide whitening agent of the anchoring coupling agent prepared in step 1) with 40 parts of thermoplastic elastomer SBS, 0.8 part of SBS polymer fluorescent whitening agent, 0.2 part of dicumyl peroxide, and 0.1 part of antioxidant B215 , 0.3 parts of paraffin oil lubricant, etc. are mixed in a high-speed blender, the stirring time is 5 to 10 minutes, and the temperature is below 50°C.

[0024] 3) Add the mixture prepared in step 2) into the hopper of the mixing type twin-screw extruder, and when the twin-screw extruder is heated to 150-200°C, start the feeding machine and the twin-screw extruder, and the materials enter the twin-screw extruder evenly After m...

Embodiment 2

[0026] 1) Spray 0.50 parts by mass fraction of azidotrimethoxysilane (diluted with the same mass of methanol) coupling agent on 60 parts of barium sulfate-based TiO in stirring 2 Composite white pigment, keep it for 5-30 minutes, and the temperature is below 50°C, and become an inorganic brightener anchoring the coupling agent;

[0027] 2) Combine the inorganic whitening agent of the anchoring coupling agent prepared in step 1) with 40 parts of thermoplastic elastomer EPDM, 3 parts of EPDM polymer fluorescent whitening agent, 0.5 parts of di-tert-butyl peroxide initiator, 0.2 parts Antioxidant B215 and 0.8 parts of polyethylene wax are mixed in a high-speed blender, the mixing time is 5 to 15 minutes, the speed is 400 rpm, and the temperature does not exceed 50°C.

[0028] 3) Put the mixture prepared in step 2) into the hopper of the mixing type twin-screw extruder, preheat the twin-screw extruder to 150-200°C, start the feeder and twin-screw machine, and the material is unifo...

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Abstract

The invention relates to a method for preparing a chemical compound type macromolecular toughening brightening additive used for plastics and a product thereof. The method comprises: sprinkling a coupling agent with a mass fraction of 0.5% to 8% of that of an inorganic brightening agent into 20 to 60 parts of stirring inorganic brightening agent powder, keeping for a certain period of time, obtaining the inorganic brightening agent anchored to the coupling agent; mixing the inorganic brightening agent anchored to the coupling agent with 20 to 80 parts of thermoplastic elastomer, 0.5 to 5 parts of polymer fluorescent brightening agent, 0.2 to 1.0 parts of peroxide initiator, 0.1 to 0.2 parts of anti-oxidant and 0.3 to 1.5 parts of lubricant in a high stirring machine, adding the obtained mixture into a mixing type double screw extruder, obtaining the macromolecular toughening brightening additive through the working procedures of mixing, extruding, grinding and cooling. The additive provided in the invention is the chemical compound type macromolecular toughening brightening additive used for plastics, which ingrates the functions of toughening, brightening and environmental protecting.

Description

technical field [0001] The invention relates to a polymer toughening and whitening agent and a preparation method thereof, belonging to additives for plastic modification, and in particular to a preparation method of a chemical compound polymer toughening and whitening additive for plastics. Background technique [0002] Many plastic products require whitening, brightening and toughening during processing, especially some recycled plastics need to be modified to obtain good appearance and mechanical properties. The method used now is: adding inorganic brightener powder for whitening; adding fluorescent whitening agent for brightening and whitening; adding rubber elastomer components for toughening. Mix them with resin for processing. Such traditional methods have the following disadvantages: (1) It is difficult to mix and disperse them uniformly, which affects the effect of whitening, brightening and toughening; Light-resistant and long-term hot-temperature environment, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/02C08L23/16C08K13/06C08K9/06C08K3/22C08K3/30C08K3/26
Inventor 王志刚唐薰
Owner 湖南神谷新材料有限公司
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