Permanent antistatic polybutylene terephthalate (PBT)/poly-p-phenylene oxide (PPO) alloy and production method thereof
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An antistatic and antistatic masterbatch technology, which is applied in the field of permanent antistatic masterbatch and preparation, can solve the problems of low conductivity and achieve low cost, high mechanical properties and long-lasting antistatic effect
Inactive Publication Date: 2013-03-27
SHANGHAI SUNNY
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However, PBT / PPO 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
[0024] The antistatic masterbatch raw material formula of embodiment 1-5 is as follows:
[0025]
[0026] 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 .
[0027] In the above examples, the antioxidant is a compound of phenothiazine and phosphite (s9228) in a weight ratio of 1:1;
[0028] 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;
[0029] In the foregoing embodiments, the auxiliary antistatic agent is silicon dioxide;
[0030] In the above examples, the polymer material containing polyether block is a composite of polyethylene oxide and polyethylene glycol methacrylic acid copolymer in a weight ratio of 5:1; the molecular weight of the two polymers is preferably Between 60,000 and 160,000.
[0031] In the above examples, the intrinsic viscosity ...
Embodiment 5
[0039] Example 5 has the lowest surface resistivity and the highest cost performance.
Embodiment 6
[0055] Weigh the raw materials according to the weight ratio: 1% of the above-mentioned antistatic masterbatch, 40% of PBT, 58% of PPO, 1% of compatibilizer, weigh the raw materials according to the weight ratio and put them into the high mixer and mix them for 2-5 minutes , discharge, and then use a twin-screw extruder to extrude and granulate, the processing temperature is 255-285 ° C, and the screw 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 antistatic polybutylene terephthalate (PBT) / poly-p-phenylene oxide (PPO) alloy and a production method thereof, wherein the material comprises the following components in percentage by weight: 3-8% of antistatic masterbatch, 40-45% of PBT, 40-50% of PPO and 1-5% of compalizer, wherein the antistatic masterbatch comprises the following components in percentage by weight: 1-15% of alkali metal salt, 0.1-2% of antioxidant, 0.1-2% of heat stabilizer, 0-10% of assistant antistatic agent and 70-95% of a high polymer material which contains polyether blocks, and the raw materials are weighed according to the weight percentages to mix, discharge, extrude and granulate. The invention has the advantages of permanent antistatic effect, realization of permanent antistatic effect, good antistatic effect and higher comprehensive mechanical property; and being approximate to the performance of the pure PBT / PPO alloy, having light color, being capable of being made up into other colors, and having low cost and good heat-resistant quality. The surface resistivity of the PBT / PPO alloy can reach 106-108 omega.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 PBT / PPO alloy. Background technique [0002] PPO has the advantages of high rigidity, high heat resistance, good water resistance, flame retardant, high strength and excellent electrical properties. It also has the advantages of wear resistance, non-toxicity, and pollution resistance. Its dielectric constant and dielectric loss are important in engineering It is one of the smallest types of plastics, and is hardly affected by temperature and humidity, and can be used in low, medium and high frequency fields. The load deflection temperature of PPO can reach above 190°C, and the embrittlement temperature is -170°C. PBT is a milky white translucent to opaque, crystalline thermoplastic polyester. It has high heat resistance, toughness, fatigue resistance, self-lubrication, low coefficient of...
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