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Syndiotactic polystyrene/polyamide/clay nano composite material

A technology of nanocomposite materials and polystyrene, which is applied in the field of syndiotactic polystyrene/polyamide/clay nanocomposite materials, can solve the problems of unsatisfactory composite properties, weak interfacial interaction, and low impact strength, and promote The effect of capacity increase, improvement of comprehensive performance, and good technical effect

Inactive Publication Date: 2003-10-22
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the unsatisfactory comprehensive performance of the composite material caused by the high brittleness of the syndiotactic polystyrene blended composite material in the prior art, the low impact strength and the weak interface between the polymer matrix and the inorganic filler. , providing a new syndiotactic polystyrene / polyamide / clay nanocomposite

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0033] Preparation of Sulfonated Syndiotactic Polystyrene / Clay Nanocomposite

[0034] After mixing sulfonated syndiotactic polystyrene (SsPS) (4.13 mol% sulfonation degree) and organic montmorillonite (MTN) in a weight ratio (MTN:SsPS=1:3), add a quantitative amount of solvent trichloro Ethane (according to adding 1 g of SsPS to 30 ml), reacted at 120°C for 24 hours, evaporated the solvent, and dried in vacuum at 90°C until constant weight. [Example 3]

Embodiment 3

[0035] Preparation of Syndiotactic Polystyrene / Polyamide / Clay Nanocomposites

[0036] In 62 parts (weight, the same below) of syndiotactic polystyrene (the weight average molecular weight is 350,000, the syndiotactic degree is 97%, and the melting point is 272 ° C), add 24 parts of sulfonated syndiotactic polystyrene prepared in [Example 1] Styrene / montmorillonite nanocomposite, 20 parts of polyamide 6 (PA6) (molecular weight is 18000), 5 parts of sulfonated syndiotactic polystyrene (SsPS, sulfonation degree is 8.65 mol%) and 0.1 part of antioxidant 1010. Dry mix the above materials in a blender first, and then knead them in a kneader. The kneading conditions are as follows: the temperature is 285°C, the rotation speed is 75 rpm, and the kneading time is 8 minutes. The mixed material is extruded and granulated in the extruder. After the pellets are molded or injection molded, they are subjected to performance testing. 【Example 4】

Embodiment 4

[0037] Preparation of Syndiotactic Polystyrene / Polyamide / Clay Nanocomposites

[0038] In 62 parts (weight, the same below) of syndiotactic polystyrene (the weight-average molecular weight is 350,000, the syndiotacticity is 97%, and the melting point is 272°C), add 24 parts of sulfonated syndiotactic polystyrene prepared in [Example 2] Styrene / montmorillonite nanocomposite, 20 parts of polyamide 6 (PA6) (molecular weight is 18000), 5 parts of sulfonated syndiotactic polystyrene (SsPS, sulfonation degree is 8.65 mol%) and 0.1 part of antioxidant 1010. Dry mix the above materials in a blender first, and then knead them in a kneader. The kneading conditions are as follows: the temperature is 285°C, the rotation speed is 75 rpm, and the kneading time is 8 minutes. The mixed material is extruded and granulated in the extruder. After the pellets are molded or injection molded, they are subjected to performance testing. 【Example 5】

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PUM

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Abstract

The present invention relates to a syndiotactic polystyrene / polyamide / clay nano composite material, and is mainly aimed at resolving the problems of large brittleness, low impact strength and poor comprehensive performance in the previous composite materials. Said invention utilizes adoption of its technical scheme of that its adopts the intercalation combination-comixing combination method to prepare solfonated syndiotactic polystrene / clay nano composite firstly, then the syndiotactic polystyrene, polyamide and solfonated syndiotactic polystyrene / clay nano composite are melt-mixed and combined so as to better resolve said problems. Said nano plastic alloy has high impact strength, high strength and high heat-resisting property, and said invention can be used in industrial production of said nano composite material.

Description

technical field [0001] The invention relates to a syndiotactic polystyrene / polyamide / clay nanocomposite material. Background technique [0002] Syndiotactic polystyrene is a new type of engineering plastic. It is different from general-purpose polystyrene and has the following advantages: (1) high melting point, 270°C; (2) high crystallinity, and the crystallization temperature can be controlled within a wide range The range is suitable for conventional plastic processing and molding methods; (3) Excellent heat resistance and chemical resistance. Therefore, it has an excellent development prospect and a very broad potential market. The disadvantage of syndiotactic polystyrene is its high brittleness, which limits its application range. It must be modified to suit structural material applications. The characteristic properties of the improved syndiotactic polystyrene are low density, good toughness and good electrical properties, which can c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/34C08L25/06C08L77/00
Inventor 黎华明林尚安周文乐祝方明沈志刚卢文奎
Owner CHINA PETROLEUM & CHEM CORP
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