Permanent anti-static PP (polypropylene) composite material and preparation method thereof
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A composite material and antistatic technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problem that the conductivity is lower than that of metal materials, achieve good antistatic effect, improve compatibility, and increase surface activity.
Active Publication Date: 2014-07-09
上海日之升科技有限公司
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It is suitable for making general mechanical parts, corrosion-resistant parts and automobile and electrical parts. However, PP 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 1:1 compound of phenothiazine and phosphite (s9228);
[0027] In the foregoing examples, the heat stabilizer is a compound of organotin heat stabilizer, calcium stearate, and zinc stearate in a 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 block is a compound of polyethylene oxide and polyethylene glycol methacrylic acid copolymer in a ratio of 5:1; the molecular weight of the two polymers is preferably 6- Between 160,000.
[0030] Put the above components into a high mixer according to the proportion and mix them for 2-5...
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 PP, 1% of the compatibilizer, weigh the raw materials according to the weight ratio, put them into the high mixer and mix them for 2-5 minutes, discharge, Then use a twin-screw extruder to extrude and granulate, the processing temperature is 190-220 ° C, and the screw rotation speed is 40 Hz. The surface resistivity of the prepared material is 10 13 Ω.m.
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Abstract
The invention relates to a permanent anti-static PP (polypropylene) composite material and a preparation method thereof. The material comprises the following components in percentage by weight: 3 to 8 percent of anti-static master batch, 80 to 95 percent of PP and 1 to 5 percent of compatilizer. The preparation method comprises the following steps of: weighing the raw materials according to weight proportion; placing the raw materials into a high mixing machine to mix the raw materials for 2 to 5 minutes; discharging; and then carrying out extrusion pelletizing by a double-screw extruder, wherein a processing temperature is in the range of 190 to 220 DEG C and screws have revolution of 35 to 40Hz. Compared with the prior art, the permanent anti-static PP composite material has the advantages of sustained anti-static effect, permanent anti-static effect, good anti-static effect, high comprehensive mechanical property, performance close to pure PP, light color, capability of being prepared into various colors, low cost, good heat resistance and the like. The surface resistivity of the permanent anti-static PP composite material can reach 106 to 108 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 PP composite material. Background technique [0002] 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. However, PP 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 sometimes even cause fires and explosions. In some specific workin...
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