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A kind of polyethylene melt flow rate regulator and preparation method thereof

A melt flow rate and polyethylene technology, which is applied in the field of polyethylene processing, can solve problems such as high melt flow rate, irregular product size, and poor appearance of finished products, so as to reduce the difficulty of production process, reduce the amount of addition, and reduce the effect Effect

Active Publication Date: 2022-07-01
深圳市鑫昌龙新材料研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during processing, the problem of high melt flow rate often occurs, which leads to a series of problems such as irregular product size, difficult processing, and poor appearance of the finished product.

Method used

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  • A kind of polyethylene melt flow rate regulator and preparation method thereof
  • A kind of polyethylene melt flow rate regulator and preparation method thereof
  • A kind of polyethylene melt flow rate regulator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation of polyethylene melt flow rate modifier comprises the following steps:

[0022] 1) Get 500 g of precipitated silica and 50 g of maleic anhydride grafted linear low-density polyethylene and add them to the high-speed mixer, heat up to 39 ℃~41 ℃, start stirring after the temperature is stable, and the total stirring time is set at 30min, and the material temperature Controlled below 95°C;

[0023] 2) Take 400g of BIBP and 20g of DTBP and mix them evenly. After the step (1) is stirred for 10min, the mixture of BIBP and DTBP after mixing is uniformly sprayed into the material being stirred with a spray device, and the stirring is continued for 20min;

[0024] 3) After the above materials are stirred for 30min, wait for the temperature of the material to be cooled to room temperature, then take 30g of graphene and the material and mix them in a high-speed mixer. A polyethylene melt flow rate modifier is obtained.

Embodiment 2

[0026] The preparation of polyethylene melt flow rate modifier comprises the following steps:

[0027] 1) Take 550g of POE and 100g of maleic anhydride grafted HDPE into the high-speed mixer, heat up to 39℃~41℃, start stirring after the temperature is stable, the total stirring time is set at 30min, and the material temperature is controlled below 95℃ ;

[0028] 2) Get 250g of BIBP and 50g of DTBP and mix them uniformly. After the step (1) is stirred for 5min, the mixture of BIBP and DTBP after mixing is uniformly sprayed into the material being stirred with a spray device, and the stirring is continued for 25min;

[0029] 3) After the above materials are stirred for 30min, wait for the temperature of the material to be cooled to room temperature, then take 50g of graphene and the material and mix them in a high-speed mixer. The stirring time is set to 10min, and the temperature of the material in the mixer is controlled below 60 ℃. A polyethylene melt flow rate modifier is o...

Embodiment 3

[0031] The preparation of polyethylene melt flow rate modifier comprises the following steps:

[0032] 1) get EVA 400g and maleic anhydride grafted polyolefin elastomer 100g and join in the high-speed mixer, be warming up to 39 ℃~41 ℃, start stirring after the temperature is stable, the total stirring time is set at 30min, and the material temperature is controlled at 95 ℃ the following;

[0033] 2) Get BIBP 400g and DTBP 50g and mix them uniformly, after step (1) is stirred for 5min, the mixture of BIBP and DTBP after mixing is uniformly sprayed into the material being stirred with a spray device, and continue stirring for 25min;

[0034] 3) After the above materials are stirred for 30min, wait for the temperature of the material to be cooled to room temperature, then take 50g of graphene and the raw material and mix them in a high-speed mixer. A polyethylene melt flow rate modifier is obtained.

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Abstract

The invention discloses a polyethylene melt flow rate regulator and a preparation method thereof. The polyethylene melt flow rate regulator, in parts by mass, includes the following components: 25-40 parts of bis-tert-butyl cumyl peroxybenzene, 1-5 parts of graphene, and di-tert-butyl peroxide 1-5 parts of base, 5-10 parts of maleic anhydride grafted polyolefin and 40-60 parts of carrier. The polyethylene melt flow rate regulator proposed in the present invention is added to the regenerated polyethylene during processing to reduce the melt flow rate. The polyethylene melt flow rate regulator has the advantages of small addition amount, stable effect of reducing the melt flow rate, and low melt flow rate. Affecting the advantages of production process conditions, after adding polyethylene melt flow rate regulator during the processing of recycled polyethylene, the melt flow rate can be reduced by more than 40% without reducing other mechanical properties.

Description

Technical field: [0001] The invention relates to the technical field of polyethylene processing, in particular to a polyethylene melt flow rate regulator and a preparation method thereof. Background technique: [0002] Under the healthy economic development trend that the country advocates green environmental protection and recycling, as the most widely used and most used plastic material in the 21st century, it is the key recycling object to respond to the national call. Before 2018, due to the low price and excellent performance of imported recycled plastics, my country's annual average import volume reached tens of millions of tons. After the introduction of the plastic restriction order in 2018, with the sharp decrease in the amount of plastic imports, the recycled plastic industry has increasingly turned its attention on raw materials to the domestic market. The recycled and broken recycled plastics have complex components and poor processing performance. Modifiers tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L51/06C08L23/08C08K13/02C08K3/04C08K5/14C08K3/36
CPCC08L23/06C08K13/02C08K3/042C08K5/14C08K3/36C08L23/0815C08L23/0853C08K2201/014C08L2207/04C08L51/06
Inventor 黄燕生吴峰黄建生
Owner 深圳市鑫昌龙新材料研究所有限公司
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