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A kind of method for preparing polyphenylene sulfide inorganic particle composite material

A technology of polyphenylene sulfide and inorganic particles, which is applied in the field of preparation of composite materials, can solve problems such as uneven dispersion, affecting the mechanical and thermal properties of composite materials, and achieve the effect of improving mechanical properties and thermal conductivity

Inactive Publication Date: 2015-10-28
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The mechanical properties of glass fiber reinforced PPS after surface treatment are improved, and with the increase of glass fiber content, the mechanical properties gradually increase, but when the glass fiber content increases to about 50%, the mechanical properties begin to decline, even after surface treatment , the filling amount of glass fiber still cannot exceed 50%, otherwise there will be problems of uneven dispersion, which will affect the mechanical and thermal properties of the composite material

Method used

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  • A kind of method for preparing polyphenylene sulfide inorganic particle composite material
  • A kind of method for preparing polyphenylene sulfide inorganic particle composite material
  • A kind of method for preparing polyphenylene sulfide inorganic particle composite material

Examples

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Embodiment 1

[0031] Take 200 grams of low-melting glass with a softening temperature of 325°C and polyphenylene sulfide with a melting point of 280°C and a decomposition temperature greater than 450°C [density ρ=1.35g / cm 3, melt index MI=297g / 10min (5kg, 315°C, 2.09mm, GB / T 3682-2000)] 800g mixed and placed in a 120°C oven to dry for 4h, then taken out, put into a planetary ball mill and mixed for 20min, The rotating speed of the ball mill is 400r / min to obtain the premixed powder. Put the premixed powder into an internal mixer, knead for 8 minutes at a temperature of 400°C and a speed of 80 r / min, take it out, and mold it into a sample for testing.

Embodiment 2

[0041] Take 600 grams of low-melting glass with a softening temperature of 325°C and 400 grams of polyphenylene sulfide with a melting point of 280°C and a decomposition temperature greater than 450°C, mix them together and place them in an oven at 120°C to dry for 4 hours. After taking them out, put them in a planetary Mix in a ball mill for 20 minutes at a speed of 400 r / min to obtain premixed powder. Put the premixed powder into an internal mixer, knead for 10 minutes at a temperature of 400°C and a speed of 80 r / min, take it out, and mold it into a sample.

Embodiment 3

[0047] Take 600 grams of low-melting point glass with a softening temperature of 350°C and 400 grams of polyphenylene sulfide with a melting point of 280°C and a decomposition temperature greater than 450°C, mix them together and place them in an oven at 120°C for 4 hours. After taking them out, put them in a planetary Mix in a ball mill for 20 minutes at a speed of 400 r / min to obtain premixed powder. Put the premixed powder into an internal mixer, knead for 10 minutes at a temperature of 400°C and a speed of 80 r / min, take it out, and mold it into a sample.

[0048] Figure 5 It is the scanning electron micrograph of the polyphenylene sulfide inorganic particle composite material prepared in embodiment 3, observe Figure 5 , the low-melting-point glass in the composite material presents a regular spherical shape in the matrix. After testing, its average particle size is 6.6 μm, and its particle size distribution is wider than that of the low-melting-point glass with a softe...

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Abstract

The invention discloses a preparation method of a polyphenylene sulfide inorganic particle composite, and the preparation method comprises the following steps: firstly, evenly mixing low melting point glass particles and polyphenylene sulfide in the mass ratio of 1:0.6 to 4, drying, grinding to obtain a pre mixed powder material, wherein the difference value of the softening temperature of the low melting point glass particles and the decomposition temperature of the polyphenylene sulfide being at least 100 DEG C; mixing the pre mixed powder material to obtain the polyphenylene sulfide inorganic particle composite, wherein the mixing temperature being higher than the softening temperature of the low melting point glass particles and lower than the decomposition temperature of the polyphenylene sulfide. The preparation method is simple in process, inorganic particles need no surface treatment and have a large filling amount, and in-situ generation and controllable regulation of the morphological structure of the inorganic particles can be realized in the preparation process. The polyphenylene sulfide inorganic particle composite prepared by the preparation method has excellent mechanical properties and heat-conducting properties.

Description

technical field [0001] The invention relates to a method for preparing composite materials, in particular to a method for preparing polyphenylene sulfide inorganic particle composite materials. Background technique [0002] Polyphenylene Sulfide (PPS for short) is a polymer in which a benzene ring is connected to a sulfur atom at the para position to form a macromolecular rigid main chain. PPS has a high degree of crystallinity and a density of 1.34g / cm 3 , the melting point is 281°C, and the decomposition temperature is greater than 450°C. There are extremely dense benzene rings and sulfur atoms on the main bond of PPS, so it is a thermoplastic resin with high rigidity and high crystallinity. It has high strength and modulus, good dimensional stability of products, small creep and high resistance. Fatigue, good flame retardancy, high temperature resistance and outstanding bonding performance to metals such as glass, ceramics, steel, aluminum, nickel, etc., the long-term c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L81/02C08K3/36B29B7/28B29B7/72
Inventor 杨红梅刘洲吴佳春郑强
Owner ZHEJIANG UNIV
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