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A kind of calcium sulfate whisker synthetic paper and preparation method thereof
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A calcium sulfate whisker and synthetic paper technology, applied in the field of calcium sulfate whisker synthetic paper and its preparation, to reduce weight, increase strength, and protect the ecological environment
Active Publication Date: 2016-06-08
JIANGSU EFFUL SCIENCE AND TECHNOLOGY CO LTD
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Problems solved by technology
At present, there are no reports on the use of calcium sulfate whiskers in the patents and production of synthetic paper at home and abroad
Method used
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preparation example Construction
[0023] The preparation method of this calcium sulfate whisker synthetic paper comprises the following steps:
[0024] (1) The composition of the calcium sulfate whisker synthetic paper is dried separately for later use; the calcium sulfate whisker is at 400 0 ~600 0 Calcined under the condition of C for 0.5 to 2 hours, polyolefin and composite additives at 80 0 ~90 0 Dry under C conditions for 2 to 4 hours;
[0025] (2) According to the ratio, pre-mix calcium sulfate whiskers, dispersing lubricants, and coupling agents in a high-speed mixer with a heating device at 80-100°C for 3-5 minutes, and continue stirring to heat up to 115 ~125 0 Add toughening agent under condition C, or add dispersing lubricant at the same time and continue stirring for 3 to 5 minutes;
[0026] (3) Add the uniformly mixed fine powder, polyolefin, antioxidant and plasticizer in step (2) into the twin-screw extruder for banburying, plasticize, extrude and granulate, and wait for the pellets to cool...
Embodiment 1
[0033] Weigh 400 0Calcined calcium sulfate whiskers 120kg, dispersing lubricant (TAS-2A) 2kg, coupling agent (vinyl-tris(2-methoxyethoxy) silane) 3KG are added to the high-speed mixer at 100 0 Premix for 3 minutes at C; heat up mixer to 115 0 Add toughening agent (EVA resin) 5KG at C and continue to stir for 3 minutes; then weigh polypropylene (PP) 40KG, low-density polyethylene (LDPE) 20KG, main antioxidant (1010) 2KG, auxiliary antioxidant (168) 4KG , Plasticizer 4KG. All the measured materials and the mixture in the high-speed mixer are added to the twin-screw extruder for banburying, plasticizing, extruding and granulating, and the temperature of each section of the twin-screw extruder is set at 125 0 C. 145 0 C. 165 0 C. 185 0 c. Then add the synthetic paper masterbatch to the single-screw extruder for melting and mixing, and the set temperature of the single-screw extruder is 155 0 C. 215 0 C, and then extrude the molten feed liquid from the slot of the T-die to ...
Embodiment 2
[0035] Weigh 500 0 C Calcined calcium sulfate whiskers 110kg, dispersing lubricant (TAS-2A) 1.5kg, coupling agent ((vinyl-tris(2-methoxyethoxy)silane)) 1KG are added to the high-speed mixer Medium to 90 0 Premix for 4 minutes at C; heat up mixer to 120 0 At C, add 1KG of toughening agent (EVA resin), 1.5KG of dispersing lubricant (polyethylenewax (PEW)), 2KG of plasticizer and continue stirring for 4 minutes; then weigh 80KG of polypropylene (pp), main antioxidant (1010 ) 1KG, auxiliary antioxidant (168) 2KG, and the mixture in the high-speed mixer are added to the twin-screw extruder for banburying, plasticizing, extruding and granulating, and the temperature of each section of the twin-screw extruder is set to 120 0 C. 140 0 C. 160 0 C. 180 0 c. Then add the synthetic paper masterbatch to the single-screw extruder for melting and mixing, and the set temperature of the single-screw extruder is 150 0 C. 210 0 C, and then extrude the molten feed liquid from the slot o...
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Abstract
The invention relates to calciumsulfatewhisker synthetic paper and a preparation method thereof. The synthetic paper comprises the following components by mass percent: 30-50% polyolefin, 40-60% calciumsulfatewhisker, 2-15% compound additives, wherein the compound additives comprise a coupling agent, a toughening agent, an antioxidant, a plasticizer and a dispersing lubricant; the preparation method comprises continuously stirring the calciumsulfatewhisker, the dispersing lubricant and the coupling agent in a high-speed mixer equipped with a heating device and heating, adding the toughening agent and continuously stirring to obtain a micro-powder material, adding the micro-powder material, polyolefin, the antioxidant and the plasticizer to a twin-screw extruder unit, intermixing, plasticizing, extruding and granulating, cooling and drying the pellets to obtain the synthetic paper masterbatch, melt mixing the synthetic paper masterbatch by a single screw extruder unit and extruding a molten material solution from a slit of a T-die head to form a thin film semi-finished product, carrying out secondary heating and biaxial stretching on the thin film semi-finished product on a biaxial stretching machine, carrying out cooling corona treatment, cutting the side and rolling to obtain the calcium sulfate whisker synthetic paper.
Description
technical field [0001] The invention relates to the technical field of production of organic and inorganic composite materials, in particular to calcium sulfate whisker synthetic paper and a preparation method thereof. Background technique [0002] The main raw material of synthetic paper is synthetic resin, and generally cheap resins such as polyethylene, polypropylene, and polyvinyl chloride are used. Auxiliary raw materials include fillers, pigments and other additives. Inorganic fillers for synthetic paper include calcium carbonate, barium sulfate, clay, talc, titanium dioxide, silicic acid, diatomaceous earth, etc. In order to make synthetic paper have "paper properties", that is, to meet the requirements in terms of whiteness, opacity, printing adaptability and writing ability, the whiteness, particle size, refractive index, light-shielding ability and stability of inorganic fillers And other indicators are very important, but also consider the price factor [0003]...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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