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Glass fiber reinforced PC material capable of being ultrasonically welded and preparation method thereof

An ultrasonic welding and glass fiber technology, applied in the field of PC materials, can solve the problems of easy cracking, large loss of comprehensive mechanical properties, low impact toughness, etc., and achieve the effect of lower melting point, soft appearance and meeting manufacturing requirements.

Active Publication Date: 2020-08-14
NINGBO ZHETIE DAPHOON CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the application of ultrasonic welding technology to glass fiber reinforced PC materials has the following technical defects: the original general-purpose glass fiber reinforced PC has low impact toughness, large loss of comprehensive mechanical properties, floating fibers in appearance, and easy to crack due to rigidity during ultrasonic welding.

Method used

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  • Glass fiber reinforced PC material capable of being ultrasonically welded and preparation method thereof
  • Glass fiber reinforced PC material capable of being ultrasonically welded and preparation method thereof
  • Glass fiber reinforced PC material capable of being ultrasonically welded and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 0

[0048] Preparation Example 0: SAN320, purchased from Kumho Sunny, Korea.

preparation example 1

[0049] Preparation Example 1: The preparation process of SAN-A is as follows:

[0050] (1) Mix 65wt% aromatic hydrocarbon monomers and 35wt% acrylonitrile monomers to form a 100% monomer mixture, and stir evenly;

[0051] (2) dissolving cycloalkenes accounting for 15% by weight of the monomer mixture in the above-mentioned monomer mixture, the cycloalkenes being selected from cyclopentene;

[0052] (3) Then add n-hexane accounting for 10wt% of the monomer mixture and benzoyl peroxide accounting for 0.1wt% of the monomer mixture, mix and add in the reactor;

[0053] (4) Finally, heat to 100°C, pressure 0.5Mpa, continue to stir and carry out polymerization, until the solid content in the polymerization product is 93.5wt%, stop polymerization, devolatilization, obtain styrene-acrylonitrile-cycloolefin heat-resistant copolymer, weight The average molecular weight is 30,000, and its melt flow rate MI at 220°C is 20g / 10min;

[0054] (5) The above-mentioned styrene-acrylonitrile-cy...

preparation example 2

[0055] Preparation Example 2: The preparation process of SAN-B is as follows:

[0056] (1) Mix 65wt% aromatic hydrocarbon monomers and 35wt% acrylonitrile monomers to form a 100% monomer mixture, and stir evenly;

[0057] (2) dissolving cycloalkene accounting for 5 wt% of the monomer mixture content and N-substituted maleimide accounting for 10 wt% of the monomer mixture content in the monomer mixture, wherein the cycloalkene is selected from cyclohexene;

[0058] (3) Then add n-hexane accounting for 10.0wt% of the monomer mixture and benzoyl peroxide accounting for 0.1wt% of the monomer mixture, mix and add in the reactor;

[0059] (4) Finally, heat to 120°C, pressure 0.4Mpa, continue to stir and carry out polymerization until the solid content in the polymerization product is 91.8wt%, stop polymerization, devolatilization, and obtain styrene-acrylonitrile-N-phenylmaleimide Amine-cycloolefin with a weight average molecular weight of 20000 and a melt flow rate MI of 40g / 10min...

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Abstract

The invention discloses a glass fiber reinforced PC material capable of being subjected to ultrasonic welding and a preparation method thereof, and relates to PC materials. The glass fiber reinforcedPC material comprises the following components in parts by weight: 70-81 parts of PC, 5-10 parts of Si-PC, 3-5 parts of a styrene-acrylonitrile copolymer and 10 parts of short glass fibers. The styrene-acrylonitrile copolymer is added into the glass fiber reinforced PC material for polymerization modification, so that the toughness and strength of the material are ensured while the melting point of the material is reduced, and the Si-PC copolymer is added, so that the ductility of the material is improved, the impact toughness of brittle glass fiber reinforced PC is improved, the weldability is good, the chemical resistance is good, and the cracking phenomenon is avoided in the ultrasonic welding process.

Description

technical field [0001] The invention relates to a PC material, in particular to an ultrasonically weldable glass fiber reinforced PC material and a preparation method thereof. Background technique [0002] PC material is polycarbonate material, which is a kind of tough thermoplastic with high transparency, fatigue resistance, weather resistance and other advantages. Glass fiber is an inorganic non-metallic material with excellent performance, which has the advantages of good insulation, corrosion resistance and high strength. Glass fiber reinforced PC material is one of the earliest industrialized PC modified products. Compared with ordinary PC material, it further improves the fatigue resistance and hardness of the material, and reduces the sensitivity of the product to stress and reduces the cost. [0003] However, the wettability of PC material to glass fiber is very poor, and the two are not compatible well. Glass fiber reinforced PC products with a glass fiber content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L25/12C08L83/04C08K9/06C08K9/04C08K7/14C08K5/526C08K5/134C08K13/06C08J5/08
CPCC08J5/08C08J2369/00C08J2469/00C08J2425/12C08K9/06C08K9/04C08K7/14C08K5/526C08K5/1345C08K13/06
Inventor 张豪杰邱琪浩罗锐周浩周卓骏徐锷章兴施懿军
Owner NINGBO ZHETIE DAPHOON CHEM
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