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Preparation method of high-content superfine inorganic powder master batch for filling plastic

An inorganic powder, high-content technology, applied in the field of preparation of high-content super-magic inorganic powder masterbatch, can solve the problems of discontinuous process, inaccurate measurement, and small bulk density of ultra-fine inorganic powder, and achieve reduction Effect of flying dust and improving compatibility

Active Publication Date: 2011-06-01
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods will bring the problem of secondary pollution to the environment caused by flying powder, and there are also problems such as discontinuous process, inaccurate measurement, and unstable product performance.
The twin-screw process is the most commonly used plastic composite processing method in industry, which can realize continuous production and accurate metering of products. For general twin-screw extruders, high-filling feeding will be a big problem, and it is difficult to realize the preparation of ultra-fine inorganic powder masterbatches with a filling amount greater than 75wt%.

Method used

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  • Preparation method of high-content superfine inorganic powder master batch for filling plastic
  • Preparation method of high-content superfine inorganic powder master batch for filling plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: The formulation of the preparation method of the high-content ultrafine inorganic powder master batch for plastic filling of the present invention is as follows in terms of mass percentage (wt%):

[0019] Ultrafine layered double hydroxide (20nm) 90

[0020] Activator (silane coupling agent) 0.5

[0021] Dispersant (polyethylene wax) 1

[0022] Lubricant (liquid paraffin) 0.5

[0023] Carrier (polyethylene) 8

[0024] Feeding: 15wt% layered double hydroxide, the additives used and the carrier are fed through the main feed port, 50wt% layered double hydroxide is fed through the first side feed port, and 25wt% layered double hydroxide is fed through Feed from the second side feeding port.

[0025] Extrusion granulation equipment and process: the main feeding port is equipped with three measuring scales, which can accurately measure and feed the carrier, ultra-fine layered double hydroxide and additives respectively; the two side feeding ports are ...

Embodiment 2

[0026] Example 2: The formulation of the preparation method of the high-content ultrafine inorganic powder master batch for plastic filling of the present invention is as follows in terms of mass percentage (wt%):

[0027] Ultrafine talcum powder (500nm) 80

[0028] Activator (aluminate coupling agent) 1

[0029] Dispersant (polypropylene wax) 2

[0030] Lubricant (liquid paraffin) 2

[0031] Carrier (polypropylene) 15

[0032] Feeding: 15wt% talc powder, additives and carriers are fed through the main feed port, 45wt% talc powder is fed through the first side feed port, and 20wt% talc powder is fed through the second side feed port.

[0033] Extrusion granulation equipment and process: the main feeding port is equipped with three measuring scales, which can accurately measure and feed the carrier, ultra-fine inorganic powder and additives respectively; the two side feeding ports are equipped with a measuring scale and side feeding The material system can accurat...

Embodiment 3

[0034] Example 3: The formulation of the preparation method of the high-content ultrafine inorganic powder master batch for plastic filling of the present invention is as follows in terms of mass percentage (wt%):

[0035] Ultrafine silica (3μm) 85

[0036] Activator (aluminate coupling agent) 2

[0037] Dispersant (polyethylene wax) 2

[0038] Lubricant (stearic acid) 1

[0039] Carrier (polypropylene) 10

[0040] Feeding: 20wt% white carbon black, additives and carriers used are fed through the main feeding port, 35wt% white carbon black is fed through the first side feeding port, and 30wt% white carbon black is fed through the second side feeding port.

[0041] Extrusion granulation equipment and process: the main feeding port is equipped with three measuring scales, which can accurately measure and feed the carrier, ultra-fine inorganic powder and additives respectively; the two side feeding ports are equipped with a measuring scale and side feeding The mate...

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Abstract

The invention discloses a preparation method of high-content superfine inorganic powder master batch for filling plastic. The invention is characterized in that in the preparation method, metering feed is used, a twin-screw extruder with two side feeds is used for plasticizing extrusion, hot cutting wind cold is adopted for pelleting, and then superfine inorganic powder master batch is obtained; the master batch formula comprises the following components by weight percent: 75-90wt% of inorganic superfine powder, 2-12wt% of additive and 8-20wt% of carrier. By using the preparation method in the invention, the problems that in the process of preparing the high-content superfine inorganic powder filling master batch, the superfine powder is difficult to feed and uneven to disperse, pollutes environment and the like are solved. The master batch has the advantages of good dispersion effect and excellent product performance when being used in enhancing modification of plastic.

Description

Technical field [0001] The invention relates to a method for preparing high-content super-magical inorganic powder masterbatch for plastic filling, and belongs to the technical field of plastic masterbatch preparation technology. Background technique [0002] Plastic masterbatch refers to a new type of plastic molding processing aid made by adding plastic additives exceeding the conventional amount (mostly more than 50wt%) into the carrier resin. When molding plastic products, masterbatch can be added directly to make the products achieve predetermined performance. The use of plastic masterbatch can simplify the production process, reduce dust flying, reduce equipment wear and tear, save raw materials, make the mixing of raw materials convenient and the mixing quality uniform, thereby improving production efficiency and product performance indicators. Therefore, plastic masterbatch has played a great role in promoting the rapid development of the plastics industry. [00...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08K3/20C08K3/34C08K3/36C08K3/22
Inventor 丁鹏施利毅唐圣福
Owner SHANGHAI UNIV
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