High flexibility and low odor polypropylene material and its preparation method and application in making melt-blown cloth
A polypropylene material and flexibility technology, applied in the field of polypropylene materials, can solve the problems of no stabilizer effect research, toughness research, high melting index, etc., to ensure the actual addition amount, stable fluidity and low odor, and reduce volatility Effect
Active Publication Date: 2022-04-12
中广核俊尔(浙江)新材料有限公司 +1
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Problems solved by technology
This patented technology can obtain polypropylene materials with lower odor and higher melting index, but no research has been done on the toughness of the materials, nor has the effect of stabilizers been further explored
Method used
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[0028] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. The operating methods not indicated in the following examples are generally in accordance with conventional conditions, or in accordance with the conditions suggested by the manufacturer.
[0029] The raw materials used in the specific embodiment are as follows:
[0030] Homopolymerized polypropylene particles are MH7900 from LG Chem;
[0031] The degradation agent is Aksu's 301 degradation agent;
[0032] The adsorbent is Kuraray's SEEPS 4033;
[0033] The softener uses Idemitsu's S600;
[0034] The antioxidant is a compound antioxidant of 1790 (SI Group) and antioxidant 168 (Germany BASF).
[0035] The source of degradation agent DTBP is Lanzhou Petrochemical.
[0036] The source of PP225 powder is Hongji Petrochemica...
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Abstract
The invention discloses a high-flexibility and low-odor polypropylene material, a preparation method thereof and an application in making melt-blown cloth. Based on the total mass of raw materials as 100 parts, the raw material composition of the polypropylene material includes: 87-96.7 parts of polypropylene, 0.2-1.0 parts of degradation agent, 1-4 parts of adsorbent, 2-8 parts of softening agent, and 0.1 parts of antioxidant ~0.4 parts. The preparation method comprises: mixing polypropylene and an adsorbent, then adding a degradation agent to it by dropwise under continuous stirring, then adding a softener, and finally adding an antioxidant, and premixing the obtained material into an extruder Melt-blending in an extruder, vacuum extruded and granulated by an extruder to obtain the high-flexibility and low-odor polypropylene material.
Description
technical field [0001] The invention relates to the field of polypropylene materials, in particular to a highly flexible and low-odor polypropylene material, its preparation method and its application in making melt-blown cloth. Background technique [0002] Disposable masks are important protective equipment, and their main raw materials are polypropylene melt-blown non-woven fabrics and melt-blown fabrics, among which melt-blown fabrics are the core components of masks for filtering protection. The production process of polypropylene melt-blown non-woven fabric is as follows: extrude polypropylene melt-blown fabric and draw it with high-speed hot air, thereby forming ultra-fine fibers and condensing them on the condensed net curtain or roller, and relying on self-bonding to form a cloth. [0003] Conventional polypropylene melt-blown fabrics are basically obtained by adding tert-butyl peroxide to the polypropylene homopolymer powder to degrade (for example, the publication...
Claims
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IPC IPC(8): C08L23/12C08L53/02C08K5/14C08K5/3492C08K5/526D01F6/46D01F1/10D04H1/544D04H1/56
CPCC08L23/12D01F6/46D01F1/10D04H1/544D04H1/56C08L2205/025C08L2205/03C08L53/025C08K5/14C08K5/34924C08K5/526
Inventor 安孝善李俊周云国孙心克张磊
Owner 中广核俊尔(浙江)新材料有限公司