Organic-inorganic polypropylene composite material capable of being marked by laser and preparation method and application thereof
A composite material and laser marking technology, which is applied in the field of polymer materials, can solve the problems of changing the color of the polymer matrix, uneven particle dispersion, and reducing the mechanical properties of the polymer, so as to improve compatibility and binding force and reduce agglomeration phenomenon, the effect of improving mechanical strength
Active Publication Date: 2021-12-31
CHANGZHOU UNIV
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Problems solved by technology
Traditional laser additives are inorganic oxide additives, which have poor compatibility with the polymer matrix, and some inorganic oxide additives will change the color of the polymer matrix and even reduce the mechanical properties of the polymer itself
For example, bismuth oxide additives are toxic, and due to their nature, the particle dispersion is not uniform during the melt blending process
Method used
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Embodiment 1
[0032] (1) Weigh raw materials separately: BN, PP-G-MAH, PP;
[0033] (2) The preparation method of functionalized nitride nanofilates is: 10 g of bn particles are dispersed in 100 mL N, N-dimethylacetamide (DMAC), ultrasonic stripping 12 h; then 3000 r / min is centrifuged for 15 min, upper dispersion The BNNSS precipitate was filtered with a pore diameter of 0.1 μm, and then the BNNSS precipitate was dried at 100 ° C to obtain BNNSS, and then 10 g of BNNSS was heat treated in 850 ° C air, and BNNSS was thermally oxidized in high temperature air, and the hydroxy functionalization. 11.8 gbnns-oh was obtained.
[0034] (3) Polypropylene, compatible agent, and functionalized boron nitride nanoflake by melt mixing, molded, to obtain laser-laser-labeled PP / BNNNSS-OH composites.
[0035] The PP / BNNSS-OH composite material obtained by the process of the present invention can be characterized by laser marking performance testing, scanning electron microscopy, thermogravimetric analys...
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Abstract
The invention discloses an organic-inorganic polypropylene composite material capable of being marked by laser and a preparation method and application thereof, and belongs to the field of high-molecular polypropylene composite materials and laser marks. The preparation method comprises the following steps: preparing BNNSs by adopting a solvent-assisted ultrasonic stripping method, then carrying out heat treatment on the BNNSs in air at 850 DEG C for 6 hours, and carrying out thermal oxidation on the BNNSs to obtain BNNSs-OH; adding BNNSs-OH into polypropylene, and preparing the polypropylene composite material by adopting a melt blending method. A proper formula is selected through laser marking comparison and various test comparison, and the polypropylene marking material with excellent laser marking performance is prepared. The laser marking machine is used for carrying out surface laser radiation treatment on the polypropylene composite material to generate a black marking pattern, so that the cost is effectively reduced, and continuous, environment-friendly, efficient and large-scale marking of the polypropylene composite material is realized.
Description
Technical field [0001] The invention belongs to the field of polymer materials, and more particularly to a laser-labeled organic / inorganic polypropylene composite material and preparation method thereof. Background technique [0002] The crystallinity of polypropylene is high, the structure is constitutive, and thus has excellent mechanical properties, good heat resistance, and its articles can be sterilized at a temperature of 100 ° C, which is sterilized, and 150 ° C is not deformed under conditions without external force. The chemical stability of polypropylene is very good, except for concentrated sulfuric acid, concentrated nitric acid erosion, it is more stable to other various chemical reagents, suitable for the production of various chemical pipes and fittings, and the anti-corrosion effect is good. The high-frequency insulation performance of polypropylene is excellent, because it is almost unhydroid, so the insulation performance is not affected by humidity. It has a ...
Claims
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IPC IPC(8): C08L23/12C08L51/06C08K9/00C08K3/38
CPCC08L23/12C08K2003/385C08K2201/011C08K2201/005C08L51/06C08K9/00C08K3/38
Inventor 曹峥赖智荣薛志宇常嫄黄蓓李文俊章雨慧成骏峰吴盾刘春林
Owner CHANGZHOU UNIV