Permanently antistatic polyamide 66/polypropylene (PA66/PP) alloy, and preparation method thereof
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A PA66, antistatic technology, used in the field of permanent antistatic masterbatch and preparation, can solve the problem of low conductivity, achieve low cost, improve comprehensive performance, and small addition amount
Inactive Publication Date: 2013-06-05
SHANGHAI SUNNY
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However, PA66 / PP alloy has good electrical insulation like most polymer materials, and its surface resistivity is generally 10 13 -10 15 Ω.m, the conductivity is much smaller than that of metal materials
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Embodiment 1-5
[0023] The antistatic masterbatch raw material formula of embodiment 1-5 is as follows:
[0024]
[0025] In the foregoing examples, the alkali metal salt is M + x - , where M + for Li + , Na + , K + ;X - for Cl - 、Br - , I - 、CLO 4 - , preferably LiCLO 4 .
[0026] In the above examples, the antioxidant is a compound of phenothiazine and phosphite (s9228) in a weight ratio of 1:1;
[0027] In the foregoing examples, the heat stabilizer is a compound of organotin heat stabilizer, calcium stearate, and zinc stearate in a weight ratio of 2:1:1;
[0028] In the foregoing embodiments, the auxiliary antistatic agent is silicon dioxide;
[0029] In the above examples, the polymer material containing polyether blocks is a compound of polyethylene oxide and nylon 12 elastomer in a weight ratio of 5:1; the molecular weight of the two polymers is preferably between 60,000 and 160,000 .
[0030] Put the above components into a high mixer according to the proportion and...
Embodiment 5
[0036] Example 5 has the lowest surface resistivity and the highest cost performance.
Embodiment 6
[0051] The preparation method of permanent antistatic PA66 / PP alloy in the above-mentioned embodiment:
[0052] Weigh the raw materials according to the weight ratio: the antistatic masterbatch mentioned above 2%, PA66 43%, PP 51%, compatibilizer 4%, weigh the raw materials according to the weight ratio and put them in the high mixer for 2-5 minutes , discharge the material, and then use a twin-screw extruder to extrude and granulate, the processing temperature is 240-255 ° C, and the screw speed is 35-40 Hz. The surface resistivity of the prepared material is 10 10 Ω.m.
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Abstract
The invention relates to a permanently antistatic polyamide 66 / polypropylene (PA66 / PP) alloy, and a preparation method thereof. The material comprises the following components in percentage by weight: 3 to 8 percent of antistatic masterbatch, 40 to 43 percent of PA66, 40 to 52 percent of PP and 1 to 5 percent of compatilizer, wherein the masterbatch comprises the following components in percentage by weight: 1 to 15 percent of alkali metal salt, 0.1 to 2 percent of antioxidant, 0.1 to 2 percent of heat stabilizer, 0 to 10 percent of antistatic aid and 70 to 95 percent of polymer material containing a polyether block. The preparation method comprises the following steps of: weighing raw materials in the weight proportion, mixing, discharging, and performing extrusion granulation. The alloy has the advantages of good and durable antistatic effect, high comprehensive mechanical property, low cost, high heat resistance and the like, and achieves a permanent antistatic effect, the performance of the alloy is close to that of a pure PA66 / PP alloy, and the color of the alloy is light and can be prepared into various colors. The surface resistivity of the permanently antistatic PA66 / PP alloy can reach 106 to 108ohm.m.
Description
technical field [0001] The invention relates to a permanent antistatic masterbatch and a preparation method. The invention also relates to a preparation method of the permanent antistatic PA66 / PP alloy. Background technique [0002] Nylon 66 has become the current application due to its good comprehensive mechanical properties, high heat resistance, good wear resistance, self-lubrication, good flame retardancy, excellent chemical corrosion resistance, and excellent barrier properties. The widest range of engineering plastics. PP is non-toxic, tasteless, low density, low price, and has good electrical properties. Common acid and alkali organic solvents have little effect on it. It is suitable for making general mechanical parts, corrosion-resistant parts and automobile and electrical parts. Adding PP to PA66 can effectively improve its hygroscopicity and improve the stability of the product. At the same time, PP has a certain toughening effect on PA66. PA66 / PP alloy has b...
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