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PBT (polybutylene terephthalate) material toughened and reinforced by core-shell particles and preparation method of PBT material

A particle and toughening technology, which is applied in the field of core-shell particle toughening and strengthening PBT materials and its preparation, achieves good practical value and application prospects, low cost, and good synergistic toughening and strengthening effects

Inactive Publication Date: 2015-03-18
QINGDAO XINZHAN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The combination of elastomer and rigid particles can improve the strength and toughness of PBT materials, but there is a certain degree of mutual influence between the elastomer and rigid particles, so it cannot be toughened well. Enhanced anticipation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A core-shell particle toughened and reinforced PBT material, the components of which are: 70% PBT, 15% calcium carbonate with a particle size between 0.01 μm and 20 μm, and ethylene-octene copolymer (POE) 10% by mass percentage. %, 1% maleic anhydride, 0.2% azobisisobutyronitrile, 3% TAS-2A dispersant, 0.8% compound of primary antioxidant 1076 and secondary antioxidant 168.

[0021] 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 calcium carbonate with a particle size of 0.01μm-20μm Dry at ℃~120℃ for 1~2 hours and set aside for use; (3) Weigh the dried calcium carbonate according to the weight ratio and add it to a high-speed mixer with a barrel temperature of 40℃~80℃, stir for 3~15 minutes, and then Add maleic anhydride and azobisisobutyronitrile weighed by weight ratio, and stir for 10 to 60 minutes to achieve thorough mixing and uniform dispersion, then add ethylene-octene copolymer wei...

Embodiment 2

[0023] A core-shell particle toughened and reinforced PBT material, the components of which are: 80% PBT, 10% talc powder with a particle size between 0.01 μm and 20 μm, ethylene-propylene-diene copolymer (EPDM ) 5%, maleic anhydride 0.5%, azobisisoheptanonitrile 0.1%, TAS-2A dispersant 4%, primary antioxidant 1076 and secondary antioxidant 168 compound 0.4%.

[0024] 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; ℃~120℃, dry for 1~2 hours, and then use; (3) Weigh the dried talcum powder according to the weight ratio and add it to the high-speed mixer with a barrel temperature of 40℃~80℃, stir for 3~15 minutes, and then Add maleic anhydride and azobisisoheptanonitrile weighed by weight, and stir for 10 to 60 minutes to make them fully mixed and uniformly dispersed, then add ethylene-propylene-diene copolymerized by weight (EPDM), control the speed of the high-speed mixer to not less than 3000 rpm, and ...

Embodiment 3

[0026] A core-shell particle toughened and reinforced PBT material, the components of which are: 64% PBT, 15% kaolin with a particle size between 0.01 μm and 20 μm, styrene-ethylene-butadiene-styrene Copolymer (SEBS) 15%, maleic anhydride 1.2%, dibenzoyl peroxide 0.3%, TAS-2A dispersant 4%, primary antioxidant 1076 and secondary antioxidant 168 compound 0.5%.

[0027] Preparation method: (1) Dry PBT at 130°C to 140°C for 3 to 5 hours, control the moisture content below 0.03%, and wait for use; (2) Dry kaolin with a particle size of 0.01μm to 20μm at 60°C Dry at ~120°C for 1-2 hours and set aside; (3) Weigh the dried kaolin according to the weight ratio and add it to a high-speed mixer with a barrel temperature of 40°C-80°C, stir for 3-15 minutes, and then add the The maleic anhydride and dibenzoyl peroxide weighed in the weight ratio are stirred for 10 to 60 minutes so that they are fully mixed and uniformly dispersed, and then the styrene-ethylene-butadiene-butadiene- Styren...

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Abstract

The invention discloses a PBT (polybutylene terephthalate) material toughened and reinforced by core-shell particles and a preparation method of the PBT material. The PBT material toughened and reinforced by the core-shell particles comprises the following components in percentage by mass: 60%-80% of PBT, 10%-20% of rigid particles, 5%-20% of elastomer, 0.5%-2% of maleic anhydride, 0.1%-1% of an initiator, 3%-5% of a dispersant and 0.1%-1% of an antioxidant. Compared with the prior art, the invention has the advantages that the rigid particles subjected to surface modification by virtue of maleic anhydride and the elastomer are blended and subjected to grafting reaction to effectively form a soft-shell and hard-core structure with the rigid particles as cores and the elastomer as a shell, so that the elastomer and the rigid particles play respective advantages and have good synergistic toughening and reinforcing effects on PBT; and moreover, the PBT material has the advantages of good processing performance, low cost and simple processing process, and has good practical values and application prospects.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a core-shell particle toughened and reinforced PBT material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is a kind of thermoplastic engineering plastic, which has been widely used in electronic appliances, home appliances, automobile industry and other industries, but due to its poor low temperature impact toughness and high notch sensitivity at room temperature, etc. The disadvantages limit its application as a polymer structural material in some fields. The use of elastomers for toughening can greatly improve the impact resistance of materials, but at the same time, it also causes a significant decrease in the strength, stiffness, heat resistance and processability of materials. Toughening with rigid particles shows simultaneous toughening and strengthening under certain conditions, but the improvement of toughness ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K9/04C08K3/26C08K3/34
Inventor 不公告发明人
Owner QINGDAO XINZHAN PLASTIC