Permanent anti-static polyamide 66 (PA66) composite material and preparation method thereof
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A technology of PA66 and composite materials, which is applied in the field of permanent antistatic masterbatch and preparation, can solve the problems of low conductivity and achieve the effects of low cost, improved comprehensive performance, and small amount of addition
Inactive Publication Date: 2012-04-04
SHANGHAI SUNNY
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However, PA66 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] Weigh the raw materials according to the weight ratio: 1% of the antistatic masterbatch mentioned above, 98% of PA66, 1% of the compatibilizer, weigh the raw materials according to the weight ratio and put them in a high-mixer for 2-5 minutes, then discharge, Then use a twin-screw extruder to extrude and granulate, the processing temperature is 235-265 ° C, and the screw rotation speed is 40 Hz. The surface resistivity of the prepared material is 10 14 Ω.m.
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Abstract
The invention relates to a permanent anti-static polyamide 66 (PA66) composite material and a preparation method thereof. The material comprises the following components in percentage by weight: 3 to 8 percent of anti-static masterbatch, 80 to 95 percent of PA66 and 1 to 5 percent of compatilizer, wherein the anti-static 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 anti-static aid and 70 to 95 percent of high molecular material containing a polyether block. The preparation method comprises the following steps of: weighing the raw materials in the weight ratio; discharging; and extruding and pelleting. The permanent anti-static PA66 composite material has the advantages that: the anti-static effect is durable; a permanent anti-static effect is achieved; the anti-static effect is good; comprehensive mechanical properties are high and close to the properties of pure PA66; colors are light, so the material can be prepared into various colors; cost is low; and heat resistance is high and the like. The surface resistivity of the permanent anti-static PA66 composite material is 10<6> to 10<8> ohm.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 composite material. Background technique [0002] Due to its good comprehensive mechanical properties, high heat resistance, good wear resistance, self-lubrication, good flame retardancy, excellent chemical corrosion resistance, excellent barrier properties and other properties, PA66 has become the most suitable for current applications. Wide range of engineering plastics. However, PA66 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. It is easy to accumulate static charge when it contacts or rubs with other substances. The negative effects brought by the accumulation of static electricity have seriously affected production, life, and work, and somet...
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