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Wet preparation method for polypropylene-attapulgite filling master batch

A technology of attapulgite and filling masterbatch, which is applied in the field of filling materials, can solve the problems of expensive equipment and high energy consumption of electricity, and achieve the effects of reducing material costs, increasing load deformation temperature, and facilitating operation

Inactive Publication Date: 2016-10-12
盱眙恒泰矿业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Expensive equipment and high energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: The polypropylene-attapulgite filler masterbatch is prepared by wet method according to the following steps

[0016] (1) Preparation of dolomite-type attapulgite clay slurry: add 3% sulfuric acid to the dolomite-type attapulgite clay to modify it; then roll it three times with double rollers, mechanically activate to form a network; dry and pulverize to 200 Add water and stir for 15 minutes to obtain a slurry with a mass concentration of 7% for use;

[0017] (2) Preparation of polypropylene-attapulgite copolymer: Add step (1) 2500L of dolomite-type attapulgite clay slurry into the reaction kettle, then add 1000kg of polypropylene powder with a diameter of 1.6mm, 100kg of styrene, horse Tomic anhydride 200kg, benzoyl peroxide 3kg; heat up to 60°C and pressure 0.1 MPa and stir at low speed for 2 hours; then heat up to 90°C and stir for 4 hours to obtain polypropylene-attapulgite copolymer;

[0018] (3) Activation of calcium carbonate: After fully drying cal...

Embodiment 2

[0022] Embodiment 2: The polypropylene-attapulgite filler masterbatch is prepared by wet method according to the following steps

[0023] (1) Preparation of dolomite-type attapulgite clay slurry: add 3% sulfuric acid to the dolomite-type attapulgite clay to modify it; then roll it three times with double rollers, mechanically activate to form a network; dry and pulverize to 200 Add water and stir for 15 minutes to obtain a slurry with a mass concentration of 14% for use;

[0024] (2) Preparation of polypropylene-attapulgite copolymer: Add step (1) 2500L of dolomite-type attapulgite clay slurry into the reactor, then add 1000kg of polypropylene powder with a diameter of 2.4mm, 100kg of styrene, and 200 kg of toric anhydride, 3 kg of benzoyl peroxide; heat up to 60°C and pressure 0.2 MPa and stir at a low speed for 2 hours; then heat up to 90°C and stir for 4 hours to obtain polypropylene-attapulgite copolymer;

[0025] (3) Activation of calcium carbonate: After fully drying ca...

Embodiment 3

[0029] Embodiment 3: The polypropylene-attapulgite filler masterbatch is prepared by wet method according to the following steps

[0030] (1) Preparation of dolomite-type attapulgite clay slurry: add 3% sulfuric acid to the dolomite-type attapulgite clay to modify it; then roll it three times with double rollers, mechanically activate to form a network; dry and pulverize to 200 Add water and stir for 15 minutes to obtain a slurry with a mass concentration of 21% for use;

[0031] (2) Preparation of polypropylene-attapulgite copolymer: Add step (1) 2500L of dolomite-type attapulgite clay slurry into the reactor, then add 1000kg of polypropylene powder with a diameter of 3.2mm, 100kg of styrene, and Tomic anhydride 200kg, benzoyl peroxide 3kg; temperature raised to 60°C and pressure 0.3MPa, stirred at low speed for 2 hours; followed by heating to 90°C and stirred for 4 hours to obtain polypropylene-attapulgite copolymer;

[0032] (3) Activation of calcium carbonate: After fully...

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Abstract

The invention discloses a wet preparation method for polypropylene-attapulgite filling master batch. The wet preparation method for the polypropylene-attapulgite filling master batch includes steps of carrying out modification and mechanical activation on dolomite type attapulgite clay to obtain serous fluid for standby application; adding the dolomite type attapulgite clay serous fluid into a reaction kettle and adding polypropylene powder, St, MAH (maleic anhydride) and BPO (benzoyl peroxide) into the reaction kettle to obtain polypropylene-attapulgite copolymers; adding coupling agents and stearic acid into calcium carbonate in a high-speed mixing machine and activating the surfaces of the calcium carbonate; arranging the polypropylene-attapulgite copolymers and the calcium carbonate with the activated surfaces into a stirring machine, stirring the polypropylene-attapulgite copolymers and the calcium carbonate to obtain mixed and stirred materials, arranging the mixed and stirred materials in a disc machine, manufacturing granules from the mixed and stirred materials, conveying the processed and formed small granules into a rotary dryer and drying the small granules to obtain the polypropylene-attapulgite filling master batch. The wet preparation method has the advantages that the wet preparation method is simple and is favorable for operation, the polypropylene-attapulgite filling master batch is free of expensive elastomer materials, and accordingly the production cost can be reduced.

Description

technical field [0001] The invention relates to a filler, in particular to a method for preparing a polypropylene-attapulgite filler masterbatch by a wet method. Background technique [0002] The traditional production process of filling materials is banbury mixer--elevator lifting--cone double forced feeding--single-screw host extrusion--air-cooled die surface hot-cutting head-- --Hydraulic plate type self-powered screen changer----cyclone separator----air-cooled extended vibrating screen----finished product grain bin. Equipment is expensive and energy consumption is high. Contents of the invention [0003] The purpose of the present invention is to provide a wet preparation method of polypropylene-attapulgite filler masterbatch, which is simple and easy to operate, and there is no expensive elastomer material in the filler masterbatch, thereby reducing production cost. [0004] Technical solution of the present invention is that the wet method of preparation of this po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L35/06C08K9/02C08K3/34C08K9/04C08K3/26
CPCC08L23/12C08L35/06C08K9/02C08K3/346C08K9/04C08K2003/265
Inventor 陈炜陈子明
Owner 盱眙恒泰矿业科技有限公司
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