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Talcum powder master batch with low breakage rate and high hardness as well as preparation method and application thereof

A technology of talc masterbatch and crushing rate, applied in the field of plastic additives, can solve the problems of unusability, cracking of masterbatch, reduction of masterbatch yield, etc., achieving good performance, improving talc powder bridging, and low crushing rate Effect

Pending Publication Date: 2022-06-21
TIANJIN KINGFA NEW MATERIAL +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the content of talcum powder in the masterbatch prepared by this method is high, due to the large amount of water contained in the additives used, it is very easy to crack the formed masterbatch during the drying process, making it unusable and very large Reduce the yield of masterbatch to a certain extent

Method used

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  • Talcum powder master batch with low breakage rate and high hardness as well as preparation method and application thereof
  • Talcum powder master batch with low breakage rate and high hardness as well as preparation method and application thereof
  • Talcum powder master batch with low breakage rate and high hardness as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 27

[0080] The present embodiment prepares a kind of talc master batch, which is prepared according to the following method:

[0081] According to the formula of Example 3, add talcum powder, binder, dispersant, coupling agent and mold release agent into the high-speed mixer, mix at 60°C for 100s at a frequency of 40Hz, and obtain a premix after mixing uniformly Then, the obtained premix is ​​added to a twin-screw extruder, extruded at normal temperature (20-30° C.), and pelletized under water to obtain the talc masterbatch.

Embodiment 3

[0115] The results of Examples 3-6 show that: with the increase of the magnesium stearate content ratio in the dispersant, the molding rate level is stable and good, and the crushing rate shows a trend of first decreasing and then increasing; the impact strength and The tensile strength shows an increasing trend and tends to be stable; therefore, a dispersant with a suitable proportion and composition (such as Example 3) can make the masterbatch have better overall performance.

[0116] The comparison of embodiment 3 and embodiment 7-14 shows: the dosage ratio between adhesive, dispersant and coupling agent has a certain influence on the performance of the material, specifically: with the increase of the dispersant dosage ratio (implementation) Examples 7-10), the molding rate of the masterbatch is relatively stable; the crushing rate increases slightly; the impact strength gradually increases; the tensile strength tends to stabilize after a slight decrease, and the appropriate...

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Abstract

The invention provides a low-breakage-rate and high-hardness talcum powder master batch as well as a preparation method and application thereof. By optimizing the formula of the auxiliaries (including the adhesive, the lubricant and the coupling agent), the talcum powder master batch with high talcum powder content, low breakage rate and higher hardness can be prepared, and the breakage rate of the prepared talcum powder master batch after falling at the height of 2m is 1t; the problems of bridging and caking of talcum powder in the production process of the talcum powder filled plastic composite material can be greatly improved, so that the performance of the prepared plastic composite material is better.

Description

technical field [0001] The invention belongs to the field of plastic auxiliaries, and particularly relates to a low crushing rate, high-hardness talc master batch and a preparation method and application thereof. Background technique [0002] Talc is one of the most common fillers in modified plastics, which can improve the rigidity, hardness, and dimensional stability of the material. Talc-filled modified polypropylene composites are widely used in automobiles, home appliances, daily necessities and other fields. [0003] Compared with ordinary talc powder, the polypropylene material modified by fine / ultrafine talc powder has higher rigidity, higher heat distortion temperature, higher toughness, and better comprehensive properties of the material. However, the micro / ultrafine talc powder has small particle size, low bulk density and poor fluidity, which lead to the following anomalies in the production process of ultrafine talc-filled polypropylene materials: 1) Poor produ...

Claims

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Application Information

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IPC IPC(8): C08K3/34C08K5/098C08K5/20C08K5/5419C08L91/00C08J3/22
CPCC08J3/223C08J2491/00C08J2323/12C08J2323/06C08K3/34C08K5/098C08K5/20C08K5/5419
Inventor 郝垠龙崔嵬宋晓辉丁明笃陶四平陆湛泉付锦锋
Owner TIANJIN KINGFA NEW MATERIAL
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