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Production method and production equipment of polypropylene melt-blown materials

A polypropylene melt-blown and production method technology, applied in the field of polypropylene special materials, can solve the problems of uneven polypropylene melt-blown material, melt-blown fluctuation, incomplete reaction, etc., achieve uniform flow rate, ensure full mixing and full reaction , the effect of good quality uniformity

Inactive Publication Date: 2020-07-31
SUZHOU HECHANG POLYMERIC MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the production process of the existing polypropylene melt-blown material, the reaction is not complete, and melt-blown fluctuations are prone to occur, resulting in uneven polypropylene melt-blown material

Method used

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  • Production method and production equipment of polypropylene melt-blown materials
  • Production method and production equipment of polypropylene melt-blown materials
  • Production method and production equipment of polypropylene melt-blown materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of production method of polypropylene meltblown material that embodiment 1 provides, comprises the steps:

[0044] (1) Prepare raw materials: The raw materials for the preparation of special materials for polypropylene melt-blown non-woven fabrics include the following raw materials in terms of parts by mass: 100 parts of polypropylene, 0.1 part of light stabilizer, 0.2 part of composite antioxidant, 0.2 part of calcium stearate part and 0.3 part of degrading agent; In this embodiment 1, degrading agent is dicumyl peroxide; Composite antioxidant is made of 2,6-di-tert-butyl p-cresol and tetrakis [(3,5-di tert-Butyl-4-Hydroxycinnamic Acid Subtide]methane compound;

[0045] (2) Mixed raw materials: polypropylene, light stabilizer, composite antioxidant and calcium stearate are put into the mixer and stirred and mixed, the stirring speed of the mixer is 200r / min, the stirring time is 25 minutes, and the stirring temperature is 30°C, after stirring evenly, the raw m...

Embodiment 2

[0050] A kind of production method of polypropylene melt-blown material that embodiment 2 provides, comprises the steps:

[0051] (1) Preparation of raw materials: The raw materials for the preparation of special materials for polypropylene melt-blown non-woven fabrics include the following raw materials in terms of parts by mass: 100 parts of polypropylene, 0.3 parts of light stabilizer, 0.1 part of composite antioxidant, and 0.3 parts of calcium stearate part and 1.0 part of degradation agent; in this embodiment 2, degradation agent is dicumyl peroxide; Composite antioxidant is made of 2,6-di-tert-butyl p-cresol and tetrakis [(3,5-di tert-Butyl-4-Hydroxycinnamic Acid Subtide]methane compound;

[0052] (2) Mixed raw materials: polypropylene, light stabilizer, composite antioxidant and calcium stearate are put into the mixer and stirred and mixed, the stirring speed of the mixer is 200r / min, the stirring time is 25 minutes, and the stirring temperature is 30°C, after stirring...

Embodiment 3

[0057] A kind of production method of polypropylene melt-blown material that embodiment 3 provides, comprises the steps:

[0058] (1) Preparation of raw materials: The raw materials for the preparation of special materials for polypropylene melt-blown non-woven fabrics include the following raw materials in terms of parts by mass: 100 parts of polypropylene, 0.5 parts of light stabilizer, 0.3 parts of composite antioxidant, and 0.5 parts of calcium stearate Part and 1.5 parts of degrading agent; In this embodiment 3, degrading agent is the mixture that is made up of dicumyl peroxide, benzoyl peroxide and di-tert-butyl peroxide; Composite antioxidant is made of 2,6 - Di-tert-butyl-p-cresol and tetrakis [(3,5-di-tert-butyl-4-hydroxy oxycinnamic acid subtallow) methane;

[0059] (2) Mixed raw materials: polypropylene, light stabilizer, composite antioxidant and calcium stearate are put into the mixer and stirred and mixed, the stirring speed of the mixer is 200r / min, the stirring...

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Abstract

The invention provides a production method of polypropylene melt-blown materials. Raw materials are firstly prepared and comprise 100 parts of polypropylene, 0.1-0.5 part of a light stabilizer, 0.1-0.3 part of a complex antioxidant, 0.2-0.5 part of a halogen absorbent and 0.3-1.5 parts of a degradation agent; then the raw materials are mixed, and a raw material mixture is added into a dual screw extruder; the degradation agent is accurately metered through a metering pump, in the process of adding the degradation agent, the flowing speed of the degradation agent is adjusted through a pulse buffer, and the liquid outlet pressure of the metering pump is adjusted through a back pressure valve; and the polypropylene and the degradation agent react, the low-melting-index polypropylene becomes into high-melting-index polypropylene met, the polypropylene melt flows out from the mold head of the duals screw extruder, and the polypropylene melt-blown materials are prepared through cooling, airing and particle cutting. The invention further provides production equipment of polypropylene melt-blown materials. The polypropylene melt-blown materials produced through the method react quite thoroughly, it can be guaranteed that the flowing speed of the melt is constant, and uniformity of the polypropylene melt-blown materials is good.

Description

technical field [0001] The invention belongs to the technical field of polypropylene special materials, and in particular relates to a production method and production equipment of polypropylene meltblown materials. Background technique [0002] Meltblown nonwoven fabric is a kind of nonwoven fabric. Due to the uniqueness of the melt-blown process, the fibers produced are almost superfine fibers, so the melt-blown non-woven fabric has excellent barrier filtration, air permeability, and oil absorption, and is widely used in medical protection, sanitary materials, and filter materials. , thermal insulation materials, oil-absorbing materials, battery separators and other fields. [0003] In recent years, with the increasing demand for non-woven products, the demand for its special resin raw materials is also increasing. The raw materials for the production of non-woven fabrics mainly include polypropylene, polyester, nylon or polyvinyl chloride, among which polypropylene (PP)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/06B29C48/285B29C48/40B29C48/625B29C48/655B29C48/65B29C48/92C08K5/04C08K5/14C08K5/098C08K5/13C08K5/134C08L23/12
CPCB29B9/06B29C48/297B29C48/40B29C48/625B29C48/65B29C48/655B29C48/92B29C2948/92609B29C2948/92704B29C2948/92857B29C2948/92885B29K2105/0017B29K2105/0044C08K5/04C08K5/098C08K5/13C08K5/1345C08K5/14C08L2201/08C08L23/12
Inventor 金闪魏佳伟周威王宇
Owner SUZHOU HECHANG POLYMERIC MATERIALS
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