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Method for preparing polypropylene coating by modifying T30S granules

A polypropylene coating and pelletizing technology is applied in the field of T30S pellet modification to prepare polypropylene coating materials. low effect

Inactive Publication Date: 2014-01-01
陕西省轻工业研究设计院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the peroxidant initiating system purely containing benzene rings tends to have problems such as excessive odor, difficulty in removing and high cost in the production process and products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In the first step, T30S pellets, 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane, (di)benzoyl peroxide, compound antioxidant and stearic acid Calcium is mixed evenly, stirs 10min, obtains degradation masterbatch; In masterbatch, the mass percent of 2,5-dimethyl-2,5-bis(tert-butyl peroxy) hexane is 1.5%, peroxide (di ) The mass percentage of benzoyl is 2%, the mass percentage of composite antioxidant is 2%, the mass percentage of calcium stearate is 1%, all the other are T30S pellets; Composite antioxidant is antioxidant 1010 and antioxidant Oxygen 168 mixture;

[0025] In the second step, the T30S pellets and the degraded masterbatch were mixed at high speed in a high-speed mixer for 10 minutes to obtain a mixture; in the mixture, the mass percentage of the degraded masterbatch was 5%, and the rest was T30S pellets;

[0026] In the third step, the compound is added from the feeding port of the first section of the twin-screw extruder, starting from the third section of th...

Embodiment 2

[0030] In the first step, T30S pellets, 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane, (di)benzoyl peroxide, compound antioxidant and stearic acid Calcium is mixed evenly, stirs 20min, obtains degraded masterbatch; In masterbatch, the mass percent of 2,5-dimethyl-2,5-bis(tert-butyl peroxy) hexane is 2%, peroxide (di ) The mass percentage of benzoyl is 1.5%, the mass percentage of composite antioxidant is 3%, the mass percentage of calcium stearate is 1.8%, all the other are T30S pellets; Composite antioxidant is antioxidant 1010 and antioxidant Oxygen 168 mixture;

[0031] In the second step, the T30S pellets and the degraded masterbatch were mixed at high speed in a high-speed mixer for 20 minutes to obtain a mixture; in the mixture, the mass percentage of the degraded masterbatch was 4%, and the rest was T30S pellets;

[0032] In the third step, the compound is added from the feeding port of the first section of the twin-screw extruder, starting from the third section of the...

Embodiment 3

[0036] In the first step, T30S pellets, 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane, (di)benzoyl peroxide, compound antioxidant and stearic acid Calcium is mixed evenly, stirs 30min, obtains degraded masterbatch; In masterbatch, the mass percent of 2,5-dimethyl-2,5-bis(tert-butyl peroxy) hexane is 2.5%, peroxide (di ) The mass percentage of benzoyl is 2%, the mass percentage of composite antioxidant is 4%, the mass percentage of calcium stearate is 2%, all the other are T30S pellets; Composite antioxidant is antioxidant 1010 and antioxidant Oxygen 168 mixture;

[0037] In the second step, the T30S pellets and the degraded masterbatch were mixed at high speed in a high-speed mixer for 30 minutes to obtain a mixture; in the mixture, the mass percentage of the degraded masterbatch was 5%, and the rest was T30S pellets;

[0038] In the third step, the compound is added from the feeding port of the first section of the twin-screw extruder, starting from the third section of the b...

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Abstract

The invention discloses a method for preparing a polypropylene coating by modifying T30S granules. The method comprises the steps of carrying out for compound initiation by adopting 2, 5-dimethyl-2,5-di(tert-butyl peroxy) hexane and dibenzoyl peroxide, and degrading and modifying the polypropylene T30S granules to obtain the polypropylene coating with the melt flow rate of 15-40g / 10min. The method is even and stable in reaction, high in product quality and good in product stability. The method has the characteristics of being economical, low in energy consumption, high in yield, higher in melt strength and free from peculiar smell.

Description

technical field [0001] The invention belongs to the technical field of production of polypropylene modified special materials, and in particular relates to a method for preparing polypropylene coating materials by modifying T30S pellets. Background technique [0002] Polypropylene itself has low melt flow rate, high relative molecular mass, wide relative molecular mass distribution, poor processability, and difficult coating, which restrict the development of polypropylene in packaging, daily necessities and other application fields. However, after polypropylene is modified, it can not only inherit its advantages of light weight, low price, sanitation, high temperature resistance, and easy processing and molding, but also the melt flow rate and surface coating performance have been greatly improved, and the price is also lower than that of polypropylene. It is also relatively cheap, so it can be widely used in the coating of packaging materials such as woven bags, two-way st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/04C08K5/098C08K5/134C08K5/526C08J3/22
CPCC08J3/226C08J2323/12C08J2423/06C08L23/12C08L2203/16C08L2207/066C08L23/06C08K5/098C08K5/1345C08K5/526
Inventor 杨金明刘旭王波
Owner 陕西省轻工业研究设计院
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