Anti-static flame-retardant plastic for roller of underground conveying belt of coal mine
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A technology of flame-retardant plastics and conveyor belts, which is applied in the direction of conveyor objects, rollers, transportation and packaging, etc. It can solve the problems of reduced material strength, impact toughness, low thermal deformation temperature, and high water absorption, and achieve good flame-retardant effects 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 inorganic substances can improve the strength, modulus and heat resistance of the material, but at the sa
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[0041] Example 1
[0042] Take 45g of raw material PA66 slices (viscosity is 2.4), 35g of glass fiber, 7g of POE graft, 11g of red phosphorus flame retardant, 0.7g of ethoxylated alkylamine, 0.7g of antioxidant 1098, calcium stearate 0.6g, except the glass fiber, put other raw materials into the high-speed mixer and mix for 3 minutes, then add the mixed raw materials to the glass fiber and put it into the twin-screw extruder, the screw speed is 250 rpm, and the processing temperature is 290 ℃, extrusion granulation.
Example Embodiment
[0043] Example 2
[0044] Take 45g of raw material PA66 slices (viscosity is 2.8), 30g of glass fiber, 11g of POE graft, 12g of red phosphorus flame retardant, 0.7g of ethoxylated alkylamine, 0.7g of antioxidant 168, calcium stearate 0.6g, except the glass fiber, put other raw materials into the high mixer and mix for 2.5 minutes, then add the mixed raw materials to the glass fiber and put it into the twin-screw extruder, the screw machine speed is 260 rpm, and the processing temperature is 270 ℃, extrusion granulation.
Example Embodiment
[0045] Example 3
[0046] Take raw material PA66 slices 40g (viscosity is 3.0), glass fiber 35g, POE graft 18g, red phosphorus flame retardant 5g, ethoxylated alkylamine 0.9g, antioxidant 1010 is 0.6g, calcium stearate 0.5g, except the glass fiber, put other raw materials into the high-speed mixer and mix for 3 minutes, then add the mixed raw materials to the glass fiber and put it into the twin-screw extruder, the screw speed is 350 rpm, and the processing temperature is 280 ℃, extrusion granulation.
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Abstract
The invention relates to the field of polyamide composite, in particular to anti-static flame-retardant plastic for a roller of an underground conveying belt of a coal mine. The plastic is prepared from the following raw materials in percentage by mass: 30 to 60 percent of nylon 66 slice, 25 to 40 percent of glass fiber, 5 to 20 percent of compatilizer, 5 to 20 percent of red phosphorus flame retardant, 0.5 to 2 percent of antistatic agent, 0.5 to 1.5 percent of lubricant, and 0.2 to 1.0 percent of antioxidant. The preparation method comprises the following steps: 1, weighing the raw materials; 2, putting raw materials except the glass fiber into a high mixing machine for mixing; and 3, adding the glass fiber into the mixed raw materials, a double-screw extruder for extruding and granulating. The plastic has the beneficial effects of well overcoming the defects of static resistance and flame retardancy in the prior art, and poor use effect, ensuring that the product has good flame retardant effect and is antistatic, and having small influence on other physical indexes of the product.
Description
technical field [0001] The invention relates to the field of polyamide compositions, in particular to an antistatic and flame-resistant plastic for a coal mine underground conveyor belt roller. 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 developed by an outstanding scientist in the United States, Carothers, and a resea...
Claims
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