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Preparing method of polyolefin elastomer ionomer

A polyolefin elastomer and polyolefin technology, applied in the field of polymer science, can solve problems such as polluting the environment and increasing production costs, and achieve the advantages of simple preparation process, improved tear strength, high tensile strength and elongation at break Effect

Active Publication Date: 2012-07-11
铜陵鑫隆钢结构有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of its preparation methods use strong acids and organic solvents, thus greatly increasing production costs and easily causing environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Mix 100 kg of polyolefin elastomer, 0.5 kg of methacrylic acid, 1.1 kg of maleic anhydride, 2 kg of acrylic acid, and 0.05 kg of dicumyl peroxide into the feeding port of the extruder after mixing evenly in the mixer , to carry out melt grafting reaction; the screw speed is 160r / min, the feeding speed is 50r / min, the extrusion temperature is 150°C-200°C, and the residence time is 3 minutes. The extruded product is granulated and dried to obtain a polyolefin elastomer graft.

[0019] 100 kilograms of grafts of the prepared polyolefin elastomer, ZnCl 2 2 kg, Zn(OOC 17 h 35 ) 2 0.5 kg, carry out neutralization reaction on internal mixer, temperature is 180 ℃, mixing time is 5 minutes, obtains polyolefin elastic ionomer after reaction, the physical property of prepared polyolefin elastic ionomer is as shown in table 1 ; It can be seen from the data in Table 1 that compared with polyolefin elastomers, the mechanical properties of polyolefin elastic ionomers are significa...

Embodiment 2

[0021] With 100 kilograms of polyolefin elastomer grafts in embodiment 1 and 0.05 kilograms of AlCl 3 , 0.6 kg SnCl 4 Carry out neutralization reaction on the mill, the temperature is 150 ℃, and the milling time is 8 minutes. The physical properties of the prepared polyolefin elastic ionomer are shown in Table 1.

Embodiment 3

[0023] 100 kilograms of polyolefin elastomers, 0.5 kilograms of methacrylic acid, 1.1 kilograms of maleic anhydride, 2 kilograms of acrylic acid, and 1.7 kilograms of benzoyl peroxide were melted and grafted in an internal mixer; the rotor speed was 60 r / min, and the reaction The time was 6 minutes, and the banburying temperature was 170°C. The product is polyolefin elastomer graft.

[0024] Prepare 100 kg of grafted polyolefin elastomer with 0.05 kg of AlCl 3 , 0.3 kg SnCl 4 Carry out neutralization reaction on the mill, the temperature is 170 ℃, and the milling time is 5 minutes. The physical properties of the prepared polyolefin elastic ionomer are shown in Table 1.

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PUM

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Abstract

The invention relates to a preparing method of a polyolefin elastomer ionomer and belongs to the field of polymer science. The preparing method comprises the following steps: (1) leading an organic acid group into the molecular chain of a polyolefin elastomer, proportionally adding the polyolefin elastomer, an initiator, organic acid or anhydride in a mixer, an extruder or an open mill, reacting at 120 DEG C to 250 DEG C for 3 to 8 minutes; (2) performing the neutralization reaction between the polyolefin elastomer in added organic acid group and salt compound at 120 DEG C to 260 DEG C for 5 to 10 minutes; and forming the polyolefin elastomer ionomer. The ionic groups of polyolefin elastomer prepared by the invention plays a role of physical cross-linking at a normal temperature, thus the polyolefin elastomer ionomer has higher tensile strength and breaking elongation, has a certain fluidity at a high temperature, and can be used for extrusion, injection, pressing and other molding processing, and can also be taken as a modified material to be added to other polymers.

Description

technical field [0001] The invention belongs to the field of polymer science and relates to the preparation technology of polyolefin elastic ionomer. Specifically refers to the preparation of polyolefin elastic ionomers by melt grafting technology. Background technique [0002] Ionomers are also known as ionomers, which contain a small amount (less than 10% by mole) of suspended acid groups on the polymer molecular chain, and these acid groups are partially or fully neutralized to form salts polymer. Due to the existence of ion aggregation domains, ionomers can also be called molecular-level nanomaterials. [0003] There are many kinds of ionomers developed so far. Among them, elastic ionomers are ionomers based on flexible chains. There are a certain amount of ionic groups, which can form physical crosslinking points at room temperature and dissociate at high temperatures, so that this This kind of high polymer forms a cross-linked network at room temperature, showing el...

Claims

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Application Information

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IPC IPC(8): C08F255/08C08F8/44
Inventor 徐建平邹学良龚方红丁永红
Owner 铜陵鑫隆钢结构有限公司