Nylon 66 composition for petroleum sucker rod centralizer material
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A sucker rod and centralizer technology, which is applied in drill pipe, earthwork drilling, drilling equipment, etc., can solve the problems of decreased material strength and impact toughness, low thermal deformation temperature, high water absorption, and achieve improved thermal stability and strength. High, self-lubricating effect
Inactive Publication Date: 2010-06-30
PINGDINGSHAN HUABANG ENG PLASTIC
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However, it also has the disadvantages of high water absorption, low heat distortion temperature and low modulus, which limit its application.
Filling modification is usually used to improve its dimensional stability and rigidity, such as filling nylon 66 with glass fiber, carbon fiber, kaolin, talc and other inorgan
Method used
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Embodiment 1
[0042] Take 50g of raw material PA66 slices, 5.7g of PA6 slices, 12g of EPDM grafted rubber, compound of 1098 and 168 as antioxidant, 0.35g of 1098, 0.35g of 168, 1.1g of calcium stearate, 30g of glass fiber , color masterbatch 0.1g, molybdenum disulfide 0.4g, except glass fiber, put other raw materials into the high mixer and mix for 3 minutes, then add the mixed raw material to glass fiber and put it in the twin-screw extruder, the screw machine speed is 200 rev / min, the processing temperature is 260°C, extrusion granulation.
Embodiment 2
[0044] Take 48g of raw PA66 slices, 9g of PA6 slices, 9g of EPDM rubber grafting, the antioxidant is 1098 and 168, 0.2g of 1098, 0.2g of 168, 1.0g of barium stearate, 32g of glass fiber, Color masterbatch 0.1g, kaolin 0.5g, except glass fiber, put other raw materials into the high mixer and mix for 2.5 minutes, then add the mixed raw materials into glass fiber and put them in the twin-screw extruder, the screw machine speed is 230 rpm points, the processing temperature is 240°C, extrusion granulation.
Embodiment 3
[0046] Take 52g of raw material PA66 slices, 6.1g of PA6 slices, 10g of EPDM rubber grafting, antioxidant compound of 1098 and 168, 0.3g of 1098, 0.3g of 168, 1.1g of TAF, 30g of glass fiber, masterbatch 0.1g, mica powder 0.1g, except for glass fiber, put other raw materials into the high mixer and mix for 2 minutes, then add the mixed raw materials into glass fiber and put them into the twin-screw extruder, the screw machine speed is 430 rpm , the processing temperature is 280°C, extrusion granulation.
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Abstract
The invention relates to the polyamide composition field, particularly to a nylon 66 composition for a petroleum sucker rod centralizer material, the material is mainly used for producing injection-molding petroleum sucker rod centralizers. The material is prepared by the following raw materials(by weight proportion): 30-60% of nylon 66 slices, 5-15% of nylon 6 slices, 5-15% of compatibilzer, 0.1-0.7% of anti-oxidant, 0.5-1.5% of lubricating agent, 20-35% of fiber glass,0.1-0.5% of color master batch, and 0.1-0.7% of inorganic mineral. The preparation method is as follows: 1. weighing the above raw materials; 2. besides the glass fiber, adding materials into a high-mix machine for mixing; 3. adding the mixed raw materials into the glass fiber, and put putting the mixture into a twin screw extruder for extruding granulation. The beneficial effects of the invention are that: the product of the invention can continuously maintain the characteristics of high efficient lubrication, wear resistance and high temperature oxidation resistance at high temperature of 184 DEG C, thereby greatly improving thermal stability.
Description
technical field [0001] The invention relates to the field of polyamide compositions, in particular to a nylon 66 composition of a petroleum sucker rod centralizer material, and the material is mainly used for producing injection-molded petroleum sucker rod centralizers. Background technique [0002] Polyamide is commonly known as nylon (Nylon), and its English name is Polyamide (referred to as PA). It is a general term for thermoplastic resins containing repeated amide groups - [NHCO] - in the main molecular chain. Including aliphatic PA, aliphatic-aromatic PA and aromatic PA. Among them, aliphatic PA has many varieties, large output, and wide application. Its name depends on the specific number of carbon atoms in the synthetic monomer. [0003] Nylon is the most important engineering plastic, and its output ranks first among the five general-purpose engineering plastics. Nylon is a polyamide fiber (nylon). It can be made into long or short fibers. [0004] Nylon was devel...
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