Production formula and process of modified polypropylene special for melt-blown cloth

A production process and production formula technology, applied in the direction of single-component polyolefin rayon, non-woven fabrics, fiber chemical characteristics, etc., can solve the problems of high production technology requirements and small investment, so as to avoid uncontrollable safety hazards, The effect of small ash content and small fluctuation range of melting index

Inactive Publication Date: 2020-12-15
江苏秀乐新材料科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The equipment investment of the degradation method is small, but the requirements for production technology are relatively high

Method used

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  • Production formula and process of modified polypropylene special for melt-blown cloth

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Embodiment Construction

[0012] A special modified polypropylene production formula for melt-blown cloth, characterized in that it consists of a mixture of 99.4% PP, 0.4% di-tert-butyl peroxide (DTBP) and 0.2% antioxidant, the 0.2% Antioxidant is made by mixing Antioxidant 168 and Antioxidant 1010 at a ratio of 2:1.

[0013] A production process for a special modified polypropylene production formula for melt-blown cloth, characterized in that it comprises the following steps: 1) uniformly mixing the PP raw material and the antioxidant mixture in a 200L mixing pot for 3 minutes, And in this process, the step of uniform and uninterrupted stirring is carried out; 2) the corresponding materials are respectively put into the silo of the loss-in-weight feeding system, and the corresponding ratio is set through the control system; 3) the speed of the extruder is set to Set at 450r / min, the temperature of each functional zone of the extruder host is between 190°C and 240°C, and the step of feeding the powder...

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Abstract

The invention relates to the technical field of new materials, in particular to a production formula and process of modified polypropylene special for melt-blown cloth. According to the technical scheme, the modified polypropylene is composed of 99.4% of PP, 0.4% of di-tert-butyl peroxide (DTBP) and 0.2% of an antioxidant mixture; the 0.2% of antioxidant is formed by mixing an antioxidant 168 andan antioxidant 1010 according to the proportion of 2: 1; processing is completed in a closed space through seven steps; a peristaltic pump is adopted for injection from a first-area feeding port of anextruder; And the processing temperatures of different sections of the extruder are controlled. The production formula and process have the advantages that the ash content of the product is smaller,the residual content of di-tert-butyl peroxide (DTBP) is lower; meanwhile, uncontrollable potential safety hazards possibly occurring in the mixing process of a traditional process can be avoided, andthe melt index fluctuation range of the finished product is smaller.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a production formula and process of modified polypropylene specially used for melt blown cloth. Background technique [0002] With the continuous development of the epidemic, there is a serious shortage of medical masks, protective clothing and other products in the world. The main reason is that the core material of masks and protective clothing is the scarcity of melt blown cloth resources. Melt-blown fabrics that meet high barrier rates are required. In addition to good equipment, high-melt index modified polypropylene specially used for the production of melt-blown fabrics is also required. The commonly used methods for high melting index modified polypropylene are hydrogen adjustment method and degradation method. The equipment investment of the hydrogen conditioning method is large, and the technical level is relatively high, which is not suitable for the production ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K5/14C08K5/134C08K5/526D01F6/46D01F1/10D04H1/4291D04H1/56
CPCC08K5/14C08K5/1345C08K5/526D01F6/46D01F1/10D04H1/56D04H1/4291C08L2201/08C08L2203/12C08L23/12
Inventor 朱亚明
Owner 江苏秀乐新材料科技有限公司
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