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Preparation method of polyolefine/polyamide alloy material with bicontinuous structure

A technology of alloy materials and polyamides, which is applied in the field of preparation of polyolefin/polyamide alloy materials, and can solve problems such as high cost, unsuitable for industrial production, and strict molecular weight requirements

Active Publication Date: 2010-07-21
横店集团得邦工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It first initiates the polymerization of ethylene, ethyl acrylate and maleic anhydride under high temperature and high pressure conditions with a free radical initiator to form polyethylene with a molecular weight of 9300, and then obtains polyamide 6 with a molecular weight of 2500 through polycondensation reaction, and finally prepares The polyethylene and polyamide 6 were melt blended and extruded at 220°C in an extruder to obtain a polyethylene / polyamide 6 alloy material with a bicontinuous structure, but in the polyethylene / polyamide 6 alloy material with a bicontinuous structure he prepared In the amide 6 blend system, if the molecular weight of polyethylene and polyamide 6 is too high, the bicontinuous structure cannot be formed. Therefore, the requirements for the molecular weight of the raw materials polyamide 6 and polyethylene are relatively strict. Among them, the molecular weight of polyamide 6 is 2500, and polyamide 6 The molecular weight of ethylene is 9300, and the preparation process is complicated and the cost is high, so it is not suitable for industrial production

Method used

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  • Preparation method of polyolefine/polyamide alloy material with bicontinuous structure
  • Preparation method of polyolefine/polyamide alloy material with bicontinuous structure
  • Preparation method of polyolefine/polyamide alloy material with bicontinuous structure

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preparation example Construction

[0028] The embodiment of the present invention discloses a method for preparing a polyolefin / polyamide alloy material with a bicontinuous structure, including:

[0029] Mix functionalized polybutadiene with a weight ratio of 3-20:80-97 and irradiated or peroxide initiator polyolefin, put it into an extruder, and melt and extrude it at 160°C-210°C. Particles to obtain the first reaction product;

[0030] Mix the first reaction product and polyamide with a weight ratio of 70-85:15-30, put them into an extruder, melt, blend, extrude and granulate at 230°C-300°C to obtain a polyolefin with a double continuous structure / Polyamide alloy material.

[0031] According to the present invention, the functionalized polybutadiene is a compound obtained by grafting reaction between polybutadiene and a functionalized monomer, preferably a product with a high 1,4 structure produced by polymerization through coordination and complexation catalysis, or The product containing 50%-80% 1,2 str...

Embodiment 1

[0039] 1. Put 900g of polyethylene, 100g of maleic anhydride grafted polybutadiene and 1g of dicumyl peroxide into a twin-screw extruder to extrude and granulate after the grafting rate of 100g is 20%. The temperature is controlled at 195° C., and the screw speed is 80 rpm.

[0040] 2. Mix 750g of the product obtained in step 1 with 250g of polyamide 6 and put it into a twin-screw extruder to extrude and pelletize. The extrusion temperature is controlled at 235°C and the screw speed is 100 rpm to obtain polyolefin / polyamide 6. Amide alloy materials, see figure 1 The scanning electron microscope image of the polyolefin / polyamide alloy material prepared for this example shows that each component in the alloy material forms a continuous phase throughout the entire blend system.

Embodiment 2

[0042] 1. With 450g polyethylene, 550g polypropylene, 50g grafting ratio of 15% maleic anhydride grafted polybutadiene and 0.06g2,5-dimethyl-2,5-di-t-butylperoxyhexane After mixing, put it into a twin-screw extruder to extrude and granulate. The extrusion temperature is controlled at 200° C., and the screw speed is 80 rpm.

[0043] 2. Mix 800g of the product obtained in step 1 with 200g of polyamide 6 and put it into a twin-screw extruder to extrude and pelletize. The extrusion temperature is controlled at 235°C and the screw speed is 100 rpm to obtain polyolefin / polyamide 6. Amide alloy materials, see figure 2 The scanning electron microscope image of the polyolefin / polyamide alloy material prepared for this example shows that each component in the alloy material forms a continuous phase throughout the entire blend system.

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Abstract

The invention provides a preparation method of a polyolefine / polyamide alloy material with a bicontinuous structure, which comprises the following steps: mixing fictionalized polybutadiene and polyolefine which is irradiated or added with peroxide initiator, wherein the weight ratio of the polybutadiene to the polyolefine is 3-20:80-97, and putting the mixture into an extruder for granulating by melt extrusion at 160-210 DEG C to obtain a first reaction product; and mixing the first reaction product and polyamide in weight ratio of 70-85:15-30, and putting the mixture into an extruder for granulating by blend extrusion at 230-300 DEG C to obtain the polyolefine / polyamide alloy material with the bicontinuous structure. By the method provided by the invention, the polyolefine / polyamide alloy material with the bicontinuous structure can be prepared under the condition of a small phase of polyamide, and the method has the advantages of simple process, low preparation cost and the like and is suitable for industrialized production.

Description

technical field [0001] The invention relates to a polymer alloy material, in particular to a preparation method of a polyolefin / polyamide alloy material with a bicontinuous structure. Background technique [0002] Binary polymer blend is a polymer alloy material, which refers to a polymer material formed by mixing two polymers together by means of physical or chemical methods. After blending the polymers, excellent comprehensive properties can be obtained. polymer materials. Binary polymer blends can be divided into single-phase continuous structure and bicontinuous structure according to their morphological structure. The single-phase continuous structure means that in the two phases of the polymer blend system, one phase is a continuous phase, and the other phase is a dispersed phase dispersed in the continuous phase. Bicontinuous structure means that each component in the polymer blend system will form a continuous phase throughout the entire blend system. Compared wit...

Claims

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Application Information

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IPC IPC(8): C08L87/00C08G81/02B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/92B29C2948/92704B29C2948/92895
Inventor 殷敬华石恒冲施德安栾世方
Owner 横店集团得邦工程塑料有限公司
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