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PBT/elastomer/inorganic filler ternary composite material

A technology of inorganic fillers and composite materials, applied in the field of polymer materials, can solve the problems of strength, stiffness, heat resistance and processing performance decline, limited improvement of PBT toughness, poor low temperature impact toughness, etc., to achieve easy industrial production, reduce Effects of dosage, heat resistance and dimensional stability improvement

Inactive Publication Date: 2014-04-09
QINGDAO XINZHAN PLASTIC
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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 poor impact toughness at low temperature and notch at room temperature The shortcomings such as high sensitivity limit its application as a polymer structural material in some fields
In the prior art, the use of elastomer toughening can greatly improve the impact resistance of PBT, but at the same time it also causes a serious decline in its strength, stiffness, heat resistance and processing performance, and the cost is also high; the rigidity enhancement effect of inorganic fillers on PBT Significantly, but the improvement of PBT toughness is limited, and only has a toughening effect on PBT with certain toughness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A PBT / elastomer / inorganic filler ternary composite material, its components are proportioned by mass percentage as follows: PBT 50%, maleic anhydride grafted ethylene-octene copolymer 15%, calcium carbonate 33%, stearic acid 0.3% of calcium, 1.2% of polysiloxane, 0.5% of the compound of main antioxidant 1010 and auxiliary antioxidant 168, wherein the average particle size of calcium carbonate is between 20nm and 10μm.

[0020] Preparation method: (1) Dry PBT at 130℃~140℃ for 3~5 hours, control the moisture content below 0.03%, and wait for use; (2) Dry calcium carbonate at 80℃~110℃ for 3~6 hours , and then weigh the dried calcium carbonate and calcium stearate according to the weight ratio, add them together in a high-speed mixer at 3000 to 8000 rpm, and stir for 10 to 60 minutes at a temperature of 80 to 110 °C to make Calcium carbonate is evenly coated with calcium carbonate, and then cooled to below 40°C to obtain surface-treated calcium carbonate, which is ready for...

Embodiment 2

[0022] A PBT / elastomer / inorganic filler ternary composite material, the components of which are proportioned by mass percentage as follows: PBT 30%, maleic anhydride grafted ethylene-propylene rubber copolymer 25%, wollastonite 42%, hard 0.5% of fatty acid, 1.5% of EVA wax, 1% of the compound of main antioxidant 1010 and auxiliary antioxidant 168, wherein the average particle size of wollastonite is between 20nm and 10μm.

[0023] Preparation method: (1) Dry PBT at 130℃~140℃ for 3~5 hours, control the moisture content below 0.03%, and wait for use; (2) Dry wollastonite at 80℃~110℃ for 3~6 hours hour, then weigh the dried wollastonite and stearic acid according to the weight ratio, add them together in a high-speed mixer at 3000-8000 rpm, and stir for 10-60 minutes at a temperature of 80-110°C. Make stearic acid evenly coat wollastonite, and then cool to below 40 °C to obtain surface-treated wollastonite, which is ready for use; (3) Weigh the dried PBT and maleic anhydride graf...

Embodiment 3

[0025] A PBT / elastomer / inorganic filler ternary composite material, the components of which are proportioned by mass percentage as follows: PBT 70%, styrene-maleic anhydride copolymer elastomer 10%, talc 18%, silane 0.2% , 1.2% of ethylene bis-stearamide, 0.6% of the compound of main antioxidant 1010 and auxiliary antioxidant 168, wherein the average particle size of wollastonite is between 20nm and 10μm.

[0026] Preparation method: (1) Dry PBT at 130℃~140℃ for 3~5 hours, control the moisture content below 0.03%, and wait for use; (2) Dry talcum powder at 80℃~110℃ for 3~6 hours , and then weigh the dried talc and silane according to the weight ratio, add them together in a high-speed mixer at 3000-8000 rpm, and keep stirring for 10-60 minutes at a temperature of 80-110°C, so that the silane is evenly coated covered with talc powder, and then cooled to below 40°C to obtain surface-treated talc powder, which is ready for use; (3) weigh the dried PBT, styrene-maleic anhydride co...

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Abstract

The invention discloses a PBT / elastomer / inorganic filler ternary composite material. The PBT / elastomer / inorganic filler ternary composite material comprises the following components by mass: 30%-70% of PBT, 5%-25% of the elastomer, 5%-50% of the inorganic filler, 0.1%-0.5% of a surface treating agent, 0.2-1.5% of a lubricant and 0.1%-1% of an antioxidant. The PBT / elastomer / inorganic filler ternary composite material has the beneficial effects that the inorganic filler and the elastomer have a synergistic toughening effect when being used together, and can significantly increase notch impact strength, rigidity, heat resistance and size stability of PBT. An increase degree of toughness is larger than that by adding the elastomer with the same volume parts, so that use amount of the elastomer is greatly reduced; and cost can be further reduced. Therefore, the PBT / elastomer / inorganic filler ternary composite material has significant economic benefits and social benefits. The prepared method provided by the invention is simple and convenient for operation and is easy for industrial production.

Description

technical field [0001] The invention relates to a polymer material, in particular to a PBT / elastomer / inorganic filler ternary composite material. 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. Disadvantages such as high sensitivity limit its application as a polymer structure material in some fields. The use of elastomer toughening in the prior art can greatly improve the impact resistance of PBT, but at the same time, it also causes a serious decline in its strength, stiffness, heat resistance and processing performance, and at the same time, the cost is also high; the rigidity enhancement effect of inorganic fillers on PBT Significant, but the increase in the toughness of PBT is limited, and only has a toughening effect on PBT with a certain toughness. SUMMARY OF THE INVENTION [0003] In view...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L51/00C08L35/06C08K13/06C08K9/10C08K3/26C08K3/34C08K7/14B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/92561B29C2948/9259B29C2948/92704B29C2948/92828B29C2948/92885B29C2948/92895
Inventor 不公告发明人
Owner QINGDAO XINZHAN PLASTIC
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