Composition of hydrogenated segmented copolymer elastomer-nylon 6

A technology of hydrogenated block and copolymer, applied in the composition of hydrogenated block copolymer elastomer and nylon 6, and the composition of hydrogenated block copolymer elastomer-nylon 6, can solve the problem of poor compatibility, It is difficult to achieve modification and other problems to achieve the effect of good processing fluidity, high strength and good processing performance

Inactive Publication Date: 2012-08-01
湖南汇中新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thermoplastic elastomer SEBS modified PA6 has become the main direction of current research. Since PA6 is a strong polar engineering plastic and ordinary SEBS is a non-polar substance, the compatibility between the two is not good, and it is difficult to achieve the effect of modification.

Method used

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  • Composition of hydrogenated segmented copolymer elastomer-nylon 6
  • Composition of hydrogenated segmented copolymer elastomer-nylon 6
  • Composition of hydrogenated segmented copolymer elastomer-nylon 6

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Synthesis of Hydrogenated Styrene-Butadiene Block Copolymer

[0031]Add 3 liters of non-polar mixed solution to the 5L stainless steel polymerization kettle purified by nitrogen, wherein 90% cyclohexane, 10% hexane (accounting for the mass percent of the mixed solution), 2mmol tetrahydrofuran, and the polymerization kettle is warming up to 45%. -50℃, add 12ml of initiator n-butyllithium (n-butyllithium concentration 0.4mol / l), stir for 2-3 minutes, add 45g of styrene for polymerization, after 30 minutes of reaction, add 2ml of tetrahydrofurfuryl alcohol ethyl ether and The mixture of 90 grams of styrene and 24 grams of butadiene was added to the polymerization kettle to carry out polymerization reaction. After 20 minutes of reaction, 96 grams of butadiene was added to carry out polymerization reaction. After adding 45 grams of styrene, the hydrogenation reaction was carried out after 30 minutes of reaction. First, 72 grams of co-catalyst dimethyl phthalate was added to ...

Embodiment 2

[0033] Set the filling oil (kinematic viscosity (40°C) to 32mm 2 / s) and hydrogenated styrene-butadiene block copolymer SEBS are mixed evenly. After the hydrogenated styrene-butadiene block copolymer SEBS fully absorbs the filler oil, add nylon 6 (melt flow rate is 1.2 g / 10min) and auxiliary EBS, mixed evenly in a high-speed stirring pot, and then granulated by twin-screw, the granules were made into test samples for scanning electron microscopy (ie SEM, such as figure 2 ) to test the dispersion, water absorption and physical and mechanical properties of SEBS in nylon 6. The parts by weight of each component are as follows:

[0034] 12 parts of hydrogenated styrene-butadiene block copolymer;

[0035] Nylon 6 77.5 parts

[0036] 16 parts filler oil

[0037] 0.5 servings of EBS.

[0038] Table 1 Sample test performance results

[0039] Tensile strength, MPa Bending strength, MPa Notched impact strength, KJ / m 2 Water absorption, % 52.1 70 88.8 ...

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Abstract

The invention relates to a composition of hydrogenated segmented copolymer elastomer-nylon 6. The hydrogenated segmented copolymer elastomer is a segmented copolymer formed by performing negative ion copolymerization on a vinyl aromatic hydrocarbon and alkadiene; the segmented copolymer is hydrogenated selectively; the content of the vinyl aromatic hydrocarbon is high (50-70 percent); the structural content of a polybutylene-1 structure is up to 60-70 percent; and a middle segment contains hydrogenated styrene, a butadiene random copolymerized transition segment. The composition of the hydrogenated segmented copolymer-nylon 6 has the advantages of high strength, high impact resistance and superior water absorption resistance.

Description

technical field [0001] The present invention relates to a composition of hydrogenated block copolymer elastomer-nylon 6, in particular to a composition of hydrogenated block copolymer elastomer of vinyl aromatic hydrocarbon and conjugated diene and nylon 6, which belongs to macromolecule material application field. Background technique [0002] The preparation technology of anionic block copolymers of monovinylarene and conjugated dienes has been mastered by many countries in the world, such as China, the United States, Japan, Korea, Italy, France, Spain, Germany, etc., patented in U.S. Pat.3149182 The linear ABA block copolymer synthesized by styrene and butadiene is described in , and the patent 200810190932.1 describes the use of styrene and butadiene to synthesize star-shaped SBS, which requires a styrene content of 55-85%. With a butadiene content of 45-15%, these polymers can be hydrogenated to form more stable block copolymers as described in patents U.S. Pat. 3,595,...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L77/02C08K5/01C08K5/20C08K5/1535C08K5/17
Inventor 李建李伟聪杨立军朱家璧
Owner 湖南汇中新材料有限公司
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