Nanometer calcium carbonate reinforced and toughened plastic master batch and preparation method thereof

A nano-calcium carbonate and plastic masterbatch technology, applied in the field of plastics, can solve the problems of increasing the difficulty of preparation, particle agglomeration, and increasing production costs, and achieve the effects of improving toughness and surface finish, simple processing technology, and increasing stability

Active Publication Date: 2013-01-16
SHANXI XINTAI HENGXIN NANO MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent is only limited to the improvement of plastic toughness, and the improvement of strength is not obvious, and the calcium carbonate powder in the raw materials is all nano-scale, which virtually increases the production cost and the difficulty of preparation. High-grade calcium carbonate has a large specific surface area and high specific surface energy, and it is easy to agglomerate particles, form secondary particles, and even form larger agglomerated particles. Even if low mo

Method used

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  • Nanometer calcium carbonate reinforced and toughened plastic master batch and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1: every part is 1kg

[0034] A nano-calcium carbonate reinforced and toughened plastic master batch is composed of the following raw materials in parts by weight:

[0035] Nano calcium carbonate 30 kg

[0036] Micron calcium carbonate 50 kg

[0037] Metallocene polyethylene 13 kg

[0038] Carrier resin 7 kg

[0039] Auxiliary 8 kg

[0040] Wherein, the carrier resin is a mixture of low-density polyethylene and polypropylene mixed in any proportion; the auxiliary agent is composed of amphiphilic coupling agent, oxidized polyethylene wax, calcium stearate in a mass ratio of 3:1 : 1 mixed preparation, namely: amphiphilic coupling agent 4.8kg, oxidized polyethylene wax 1.6kg, calcium stearate 1.6kg.

[0041] The preparation method of above-mentioned masterbatch comprises the steps:

[0042] 1) Weigh nano-calcium carbonate, micro-calcium carbonate, metallocene polyethylene, carrier resin and additives according to the ratio for use;

[0043] 2) Add 30% of th...

Embodiment 2

[0045] Embodiment 2: every serving is 1g

[0046] A nano-calcium carbonate reinforced and toughened plastic master batch is composed of the following raw materials in parts by weight:

[0047] Nano calcium carbonate 65 g

[0048] Micron calcium carbonate 35 g

[0049] Metallocene polyethylene 13 g

[0050] Carrier resin 10 g

[0051] Auxiliary 5 g

[0052] Wherein, the carrier resin is low-density polyethylene; the auxiliary agent is prepared by mixing amphiphilic coupling agent, oxidized polyethylene wax, and calcium stearate in a mass ratio of 3:1:1, namely: Amphiphilic coupling agent 3g, oxidized polyethylene wax 1g, calcium stearate 1g.

[0053] The preparation method of above-mentioned masterbatch comprises the steps:

[0054] 1) Weigh nano-calcium carbonate, micro-calcium carbonate, metallocene polyethylene, carrier resin and additives according to the ratio for use;

[0055] 2) Add 34% of the total weight of additives and nano-calcium carbonate into the high-spee...

Embodiment 3

[0057] Embodiment 3: Each serving is 1 catty

[0058] A nano-calcium carbonate reinforced and toughened plastic master batch is composed of the following raw materials in parts by weight:

[0059] Nano calcium carbonate 80 catties

[0060] Micron calcium carbonate 5 catties

[0061] Metallocene polyethylene 17 catties

[0062] Carrier resin 9 catties

[0063] Auxiliary 10 catties

[0064] Wherein, the carrier resin is polypropylene; the auxiliary agent is prepared by mixing amphiphilic coupling agent, oxidized polyethylene wax, and calcium stearate at a mass ratio of 3:1:1, namely: amphiphilic coupling agent 6 catties of joint agent, 2 kg of oxidized polyethylene wax, and 2 catties of calcium stearate.

[0065] The preparation method of above-mentioned masterbatch comprises the steps:

[0066] 1) Weigh nano-calcium carbonate, micro-calcium carbonate, metallocene polyethylene, carrier resin and additives according to the ratio for use;

[0067] 2) Add 32% of the total wei...

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Abstract

The invention discloses a nanometer calcium carbonate reinforced and toughened plastic master batch and a preparation method thereof. The master batch consists of nanometer calcium carbonate, micrometer calcium carbonate, metallocene polyethylene, carrier resins and aids, wherein the nanometer calcium carbonate and the micrometer calcium carbonate are blended and added, so that reinforcing and toughening functions of the master batch are enhanced; the metallocene polyethylene has high strength and toughness, so that reinforcing and toughening effects of the master batch can be simultaneously enhanced; and the master batch is prepared by two steps, so that the nanometer calcium carbonate passes through a co-rotating twin screw extruder for two times, the dispersibility of the nanometer calcium carbonate in the master batch is further enhanced, and the reinforcing and toughening functions is fully reflected. The master batch has the advantages that the nanometer calcium carbonate can be fully and uniformly dispersed in the carrier resins, so that the prepared master batch has the peculiar reinforcing and toughening functions of the nanometer calcium carbonate; and the master batch is simple in processing technology and low in cost, the stability, heat resistance and aging resistance of materials can be effectively enhanced, and particularly the plastic strength, the toughness and the surface smoothness are greatly improved.

Description

technical field [0001] The invention relates to the technical field of plastics, in particular to a nano calcium carbonate reinforced and toughened plastic masterbatch and a preparation method thereof. Background technique [0002] In the production process of plastics, in order to reduce production costs, calcium carbonate was directly added to plastics in the form of powder as a filler at the beginning, but it was later found that this had a significant effect on the performance of plastics. Later, in order to improve the performance of plastics, calcium carbonate powder was mixed with dispersing additives to make master batches and then added to plastics, which improved the problem of plastic performance degradation to a certain extent. In addition, the above-mentioned calcium carbonate powders are generally heavy, light and micron. Although the production cost is reduced, the improvement of plastic performance is not obvious enough. In recent years, the application tech...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/04C08L23/12C08K3/26C08K5/098C08J3/22B29C47/92B29C48/92
CPCB29C48/04B29C48/40
Inventor 吕国章吕丰杨芮平
Owner SHANXI XINTAI HENGXIN NANO MATERIALS TECH CO LTD
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