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Core-shell-particle-toughened antistatic PBT composite material and preparation method thereof

A composite material and antistatic technology, which is applied in the field of core-shell particle toughened antistatic PBT composite materials and its preparation, can solve the problems of high brittleness, low notched impact strength, and insufficient antistatic performance, and achieve improved notched impact toughness, The effect of excellent antistatic performance and good synergistic toughening and strengthening effect

Inactive Publication Date: 2015-06-03
QINGDAO JIAYIYANG IND & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polybutylene terephthalate (PBT) is a crystalline linear saturated polyester resin, which has been widely used in electronic appliances, home appliances, automobile industry and other industries, but due to its low notched impact strength, high brittleness, Defects such as insufficient antistatic properties limit its application in certain fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A core-shell particle toughened antistatic PBT composite material, the components of which are proportioned by mass percentage: PBT 75%, micron calcium carbonate 10%, ethylene-octene copolymer (POE) 5%, maleic anhydride 1% , 0.2% azobisisobutyronitrile, 8% antistatic masterbatch, 0.8% compound of primary antioxidant 1076 and secondary antioxidant 168. The antistatic masterbatch is made of 70wt% PBT, 25wt% fatty acid polyethylene glycol ester and 5wt% pentaerythritol stearate.

[0022] Preparation method: (1) Dry PBT at 130°C-140°C for 3-5 hours, control the moisture content below 0.03%, and wait for use; (2) Dry micron calcium carbonate at 60°C-120°C for 1-2 hours (3) Preparation of antistatic masterbatch: take the ingredients and weigh PBT, fatty acid polyethylene glycol ester and pentaerythritol stearate by weight, add them to a high-speed mixer or an ultrasonic generator and mix for 10 to 30 minutes, Discharge, then melt and knead with a twin-screw extruder, extrude...

Embodiment 2

[0024] A core-shell particle toughened antistatic PBT composite material, the components of which are: PBT 62%, nano calcium carbonate 15%, styrene-ethylene-butadiene-styrene copolymer (SEBS) 10% by mass percentage %, 2% maleic anhydride, 0.4% azobisisobutyronitrile, 10% antistatic masterbatch, 0.6% compound of primary antioxidant 1076 and secondary antioxidant 168. The antistatic masterbatch is made of 70wt% PBT, 25wt% fatty acid polyethylene glycol ester and 5wt% pentaerythritol stearate.

[0025] Preparation method: (1) Dry PBT at 130°C-140°C for 3-5 hours, control the moisture content below 0.03%, and wait for use; (2) Dry nano-calcium carbonate at 60°C-120°C for 1-2 hours (3) Preparation of antistatic masterbatch: take the ingredients and weigh PBT, fatty acid polyethylene glycol ester and pentaerythritol stearate by weight, add them to a high-speed mixer or an ultrasonic generator and mix for 10 to 30 minutes, Discharge, and then use twin-screw extruder to melt and knea...

Embodiment 3

[0027] A core-shell particle toughened antistatic PBT composite material, the components of which are: 85% PBT, 5% nano calcium carbonate, 5% EPDM, 0.5% maleic anhydride, Azobisisobutyronitrile 0.2%, antistatic masterbatch 4%, compound of primary antioxidant 1076 and secondary antioxidant 168 0.3%. The antistatic masterbatch is made of 70wt% PBT, 25wt% fatty acid polyethylene glycol ester and 5wt% pentaerythritol stearate.

[0028] Preparation method: (1) Dry PBT at 130°C-140°C for 3-5 hours, control the moisture content below 0.03%, and wait for use; (2) Dry nano-calcium carbonate at 60°C-120°C for 1-2 hours (3) Preparation of antistatic masterbatch: take the ingredients and weigh PBT, fatty acid polyethylene glycol ester and pentaerythritol stearate by weight, add them to a high-speed mixer or an ultrasonic generator and mix for 10 to 30 minutes, Discharge, and then use twin-screw extruder to melt and knead, extrude and granulate to obtain antistatic masterbatch, which is r...

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Abstract

The invention discloses a core-shell-particle-toughened antistatic PBT composite material and a preparation method thereof. The core-shell-particle-toughened antistatic PBT composite material comprises the following components in percentage by mass: 60-90% of PBT, 3-15% of calcium carbonate particles, 3-10% of an elastomer, 0.5-2% of maleic anhydride, 0.1-1% of an initiator, 2-10% of antistatic master batches and 0.1-1% of an antioxidant. The preparation method of the core-shell-particle-toughened antistatic PBT composite material comprises the following steps: preprocessing calcium carbonate particles by using maleic anhydride, then uniformly mixing the preprocessed calcium carbonate particles with the elastomer, and carrying out grafting reaction, thereby covering the calcium carbonate particles with the elastomer and forming a core-shell micro-particle structure which takes the calcium carbonate particle as the core and takes the elastomer as the shell. The prepared core-shell-particle-toughened antistatic PBT composite material takes excellent synergistic toughening and reinforcing effect on the PBT and is capable of improving the notch impact toughness, rigidity and heat resistance of the PBT; the prepared PBT also has the characteristics of excellent antistatic performance (the surface resistivity reaches 10*<8> to 10*<11>Ohm), excellent processing performance and low cost.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a core-shell particle toughened antistatic PBT composite material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is a crystalline linear saturated polyester resin, which has been widely used in electronic appliances, home appliances, automobile industry and other industries, but due to its low notched impact strength, high brittleness, Defects such as insufficient antistatic properties limit its application in certain fields. Contents of the invention [0003] The object of the present invention is to provide a core-shell particle toughened antistatic PBT composite material and a preparation method thereof. [0004] The technical solution adopted by the present invention to solve the technical problem is: a core-shell particle toughened antistatic PBT composite material, the components of which are proportioned by mas...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/06C08K9/10C08K9/04C08K3/26C08K5/103C08J3/22B29C47/92B29C48/92
Inventor 不公告发明人
Owner QINGDAO JIAYIYANG IND & TRADE