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Hard PVC tube stock and preparation method thereof
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A PVC pipe, hard technology, applied in the field of materials, can solve the problems of poor toughness, poor impact resistance, easy to break, etc., and achieve the effect of stable performance
Inactive Publication Date: 2014-03-26
NANTONG REPAIR AIR CHEM BIOENG
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Summary
Abstract
Description
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Problems solved by technology
Pipes made of polyvinyl chloride are widely used because of their light weight, low cost and good corrosion resistance, but their disadvantages are that their toughness is poor at low temperatures, and their impact resistance decreases as the temperature decreases. The performance is getting worse and worse, and it is easily broken when impacted
Method used
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[0017] The rigid PVC pipe material described above is prepared according to the following steps:
[0018] (1) Weigh each component according to parts by weight;
[0019] (2) Mix the components in a mixing mixer, the mixing temperature is 60°C, the stirring speed is 50 rpm, and the stirring time is 20-30 minutes;
[0020] (3) Extrude the mixed material into a twin-screw extruder, wherein the barrel temperature is 170°C, the screw temperature is 150°C, and the screw speed is 30 rpm.
[0023] The rigid PVC pipe material described above is prepared according to the following steps:
[0024] (1) Weigh each component according to parts by weight;
[0025] (2) Mix the components in a mixing mixer, the mixing temperature is 65°C, the stirring speed is 55 rpm, and the stirring time is 22 minutes;
[0026] (3) Extrude the mixed material into a twin-screw extruder, wherein the barrel temperature is 172°C, the screw temperature is 155°C, and the screw speed is 35 rpm.
Embodiment 3
[0028] A rigid PVC pipe, comprising: 86 parts by weight of PVC, 1.3 parts of tribasic lead sulfate, 1.5 parts of titanium dioxide, 4 parts of calcium carbonate, 0.4 part of paraffin, 1 part of barium stearate, and oxidized polyethylene wax 0.4 parts.
[0029] The rigid PVC pipe material described above is prepared according to the following steps:
[0030] (1) Weigh each component according to parts by weight;
[0031] (2) Mix the components in a mixing mixer, the mixing temperature is 65°C, the stirring speed is 60 rpm, and the stirring time is 30 minutes;
[0032] (3) Extrude the mixed material into a twin-screw extruder, wherein the barrel temperature is 180°C, the screw temperature is 158°C, and the screw speed is 35 rpm.
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Abstract
The invention discloses a hard PVC tube stock and a preparation method thereof. The hard PVC tube stock comprises the following ingredients in parts by weight: 80-90 parts of PVC, 0.5-2 parts of tribasic lead sulfate, 0.8-2 parts of titanium dioxide, 2-6 parts of calciumcarbonate, 0.2-0.6 parts of paraffin, 0.5-2 parts of bariumstearate, and 0.2-0.6 parts of oxidized polyethylenewax. The preparation method comprises the following steps: mixing the ingredients in a mixer, and carrying out extrusion molding in a double-screw extruder, wherein the temperature of a charging barrel is 170-185 DEG C; the temperature of screws is 150-165 DEG C; the speed of the screws is 30-38 revolutions per minute. The elongation of the hard PVC tube stock is about 3.1%; the performance is stable; the tensile strength is up to 133 MPa above; the bending strength is up to 318 MPa above; the notch impact strength is up to 175 KJ / m<2> above.
Description
technical field [0001] The invention belongs to the field of materials, in particular to a rigid PVC pipe and a preparation method thereof. Background technique [0002] The existing PVC pipe production consumes a large amount of PVC resin, which has a great impact on the cost of the enterprise. Therefore, [0003] Researching an ideal substitute that can reduce the amount of PVC resin used and has no impact on the output of PVC pipes is a hot research topic nowadays. Pipes made of polyvinyl chloride are widely used because of their light weight, low cost and good corrosion resistance, but their disadvantages are that their toughness is poor at low temperatures, and their impact resistance decreases as the temperature decreases. The performance is getting worse and worse, and it is easily broken when impacted. [0004] Contents of the invention [0005] The object of the present invention is to provide a kind of rigid PVC pipe and its preparation method in order to ove...
Claims
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Application Information
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