Wollastonite fiber plastic master batch and preparation method

A wollastonite fiber and plastic masterbatch technology, which is applied in the field of plastic masterbatch, can solve the problems of difficult dispersion, low interface bonding strength, poor dimensional stability, etc., to improve dispersion and stability, improve compatibility, The effect of increasing strength

Inactive Publication Date: 2018-09-07
CHENDU NEW KELI CHEM SCI CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the currently widely used wollastonite fiber in the plastic filler masterbatch, the stability is not high, the dispersion is difficult, and the interface bonding strength is low, which leads to the low strength and stiffness of the traditional wollastonite fiber plastic and poor dimensional stability. The pre

Method used

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  • Wollastonite fiber plastic master batch and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation process is:

[0032] (1) Calcinate the wollastonite fiber at 850°C at a high temperature, add a solution containing a surfactant after cooling, and completely immerse the wollastonite fiber in the solution of the surfactant, then filter it with suction and dry it. Pretreated wollastonite fiber; wollastonite fiber is powder obtained by crushing low temperature triclinic wollastonite; surfactant is alkyl glucoside;

[0033] (2) Add 38 parts by weight of the pretreated wollastonite fiber prepared in step (1) into 56 parts by weight of acetone, and disperse evenly by ultrasonic, then add 6 parts by weight of carboxymethyl chitosan, mix and stir and transfer to a ball mill , Grind for 1.5h at a rotating speed of 45r / min to obtain wollastonite fibers modified by carboxymethyl chitosan; the ultrasonic frequency of ultrasonic dispersion is 27kHz, and the time is 25min; the ball mill is a horizontal ball mill;

[0034](3) Add 85 parts by weight of the modified w...

Embodiment 2

[0044] The preparation process is:

[0045] (1) Calcinate the wollastonite fiber at 800°C at a high temperature, add a solution containing a surfactant after cooling, and completely immerse the wollastonite fiber in the solution of the surfactant, then suction filter and dry to obtain the processed Pretreated wollastonite fiber; the wollastonite fiber is the powder obtained by pulverizing parawollastonite; the surfactant is fatty acid glyceride;

[0046] (2) Add 35 parts by weight of the pretreated wollastonite fiber prepared in step (1) into 60 parts by weight of acetone, and disperse evenly by ultrasonic, then add 5 parts by weight of carboxymethyl chitosan, mix and stir and transfer to a ball mill , Grind for 2h at a rotating speed of 40r / min to obtain wollastonite fibers modified by carboxymethyl chitosan; the ultrasonic frequency of ultrasonic dispersion is 25kHz, and the time is 30min; the ball mill is a roller ball mill;

[0047] (3) Add 80 parts by weight of the modif...

Embodiment 3

[0057] The preparation process is:

[0058] (1) Calcinate the wollastonite fiber at 900°C at high temperature, add a solution containing a surfactant after cooling, so that the solution of the surfactant is completely immersed in the wollastonite fiber, and then filter and dry to obtain the processed Pretreated wollastonite fiber; the wollastonite fiber is powder obtained by pulverizing pseudo wollastonite; the surfactant is sorbitan fatty acid;

[0059] (2) Add 40 parts by weight of the pretreated wollastonite fiber prepared in step (1) into 52 parts by weight of acetone, and disperse evenly by ultrasonic, then add 8 parts by weight of carboxymethyl chitosan, mix and stir and transfer to a ball mill , Grind for 1 hour at a rotating speed of 50r / min to obtain wollastonite fibers modified by carboxymethyl chitosan; the ultrasonic frequency of ultrasonic dispersion is 30kHz, and the time is 20min; the ball mill is a vibrating ball mill;

[0060] (3) Add 90 parts by weight of th...

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Abstract

The invention provides a wollastonite fiber plastic master batch and a preparation method. The preparation method comprises the following steps: roasting wollastonite fibers under high temperature; preprocessing through a surfactant; dispersing into acetone; adding carboxymethyl chitosan; mixing; performing ball milling; taking out; adding polyvinyl butyral; continuously performing ball milling toobtain modified wollastonite fibers; mixing with matrix resin; extruding; pelletizing to obtain the wollastonite fiber plastic master batch. According to the method, carboxymethyl chitosan is adsorbed to the surfaces of the wollastonite fibers, so that the dispersity and the stability of the wollastonite fibers in plastic can be improved; meanwhile, polyvinyl butyral is adsorbed to the surfaces of the wollastonite fibers, so that the material compatibility is improved; when the obtained plastic master batch fills a polymer matrix, the material intensity, rigidity and size stability can be obviously improved; the wollastonite fiber plastic master batch can be widely applied to the field of reinforced plastics.

Description

technical field [0001] The invention relates to the field of plastic masterbatches, in particular to inorganic fiber reinforced plastic masterbatches, in particular to a wollastonite fiber plastic masterbatch and a preparation method. Background technique [0002] With the enhancement of people's awareness of environmental protection, thermoplastics have been widely used in industries such as automobiles, electronics, electrical appliances, and communications, and the development of these industries has put forward new requirements for the comprehensive performance of plastics. Plastic itself has many outstanding advantages, such as low density, good processability, recyclability, etc., but there are also some shortcomings, such as insufficient strength, large shrinkage rate of finished products after injection molding, poor dimensional stability, and durability. The temperature is not good enough and so on. Since the development of new matrix resins in thermoplastics is di...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08K9/00C08K7/10C08L23/12C08L27/06C08J3/22
CPCC08K9/08C08J3/226C08J2323/12C08J2327/06C08J2423/12C08J2427/06C08K7/10C08K9/00C08K9/04
Inventor 陈庆司文彬
Owner CHENDU NEW KELI CHEM SCI CO LTD
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