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Thermoplastic elastomer for secondary sticky ejection with polyformaldehyde, and preparation method thereof

A technology of thermoplastic elastomer and secondary injection bonding, which is applied in the field of thermoplastic elastomer manufacturing, can solve the problems of poor adhesion of POM materials and technology that cannot meet the requirements, and achieve the effect of widening the scope of use, firm bonding, and fine surface

Active Publication Date: 2013-09-04
厦门集优新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing thermoplastic elastomers used for coating with POM have the disadvantage of poor adhesion to POM materials
In addition, the use temperature of the existing thermoplastic elastomer materials coated with POM is below 60°C. For some products that need to be used at higher temperatures, especially bathroom shower products, the existing technology cannot meet the requirements.

Method used

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  • Thermoplastic elastomer for secondary sticky ejection with polyformaldehyde, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: A thermoplastic elastomer used for secondary injection bonding with polyoxymethylene, consisting of the following components by weight: SEBS 10%, α-methylstyrene resin 5%, thermoplastic polyurethane 20%, PP-g-MAH 15%, polyetherimide 4%, paraffin oil 24.9%, calcium carbonate 20%, zinc stearate 1%, antioxidant 1076 0.1%.

[0029] The above-mentioned thermoplastic elastomer preparation process is as follows: take the raw material components according to the above-mentioned ratios, mix SEBS, a-methylstyrene resin, thermoplastic polyurethane and paraffin oil for 10 minutes, then add PP-g-MAH, polyetheramide The imine, calcium carbonate, zinc stearate and antioxidant 1076 were mixed in a blender for 10 minutes and discharged. Then the mixed material is sent into a twin-screw extruder, and the extrusion temperature of the twin-screw extruder is set to be 200° C., the feeding speed is 10 rpm, and the screw speed is 200 rpm. The raw material is sheared at high speed ...

Embodiment 2

[0030] Embodiment 2: A thermoplastic elastomer used for secondary injection bonding with polyoxymethylene, consisting of the following components by weight: SEBS 25%, a-methylstyrene resin 10%, thermoplastic polyurethane 5%, HDPE-g-MAH 15%, polyphenylene sulfide 5%, naphthenic oil 20%, talc 18.9%, EBS 0.1%, antioxidant 1076 1%.

[0031] The preparation process of the above-mentioned thermoplastic elastomer is as follows: respectively take the raw material components according to the above-mentioned proportions, mix SEBS, a-methylstyrene resin, thermoplastic polyurethane and naphthenic oil for 30 minutes, then add HDPE-g-MAH, poly Phenyl sulfide, talcum powder, EBS and antioxidant 1076 were mixed in a mixer for 5 minutes, and then discharged. Then the mixed material is sent into a twin-screw extruder, and the extrusion temperature of the twin-screw extruder is set to be 130° C., the feeding speed is 50 rpm, and the screw speed is 300 rpm. The raw material is sheared at high sp...

Embodiment 3

[0032] Embodiment 3: A thermoplastic elastomer used for secondary injection bonding with polyoxymethylene, consisting of the following components by weight: SBS 10%, styrene-methyl methacrylate 10%, thermoplastic polyurethane 15%, POE-g- MAH 20%, polyphenylene ether 1%, paraffin oil 30%, barium sulfate 12.9%, zinc stearate 1%, antioxidant 1010 0.1%.

[0033]The preparation process of Example 3 is as follows: take the raw material components according to the above-mentioned proportions, mix SBS, styrene-methyl methacrylate, thermoplastic polyurethane and paraffin oil for 20 minutes, then add POE-g-MAH, polystyrene Ether, barium sulfate, zinc stearate and antioxidant 1010 were mixed in a blender for 40 minutes and then discharged. Then the mixed material is sent into a twin-screw extruder, and the extrusion temperature of the twin-screw extruder is set to be 260° C., the feeding speed is 100 rpm, and the screw speed is 600 rpm. The raw material is sheared at high speed by twin-...

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Abstract

The invention discloses a thermoplastic elastomer for secondary sticky ejection with polyformaldehyde. The thermoplastic elastomer mainly comprises the following components in percentage by weight: 10 to 40 percent of matrix resin, 5 to 20 percent of tackifying resin, 5 to 30 percent of thermoplastic polyurethane, 10 to 20 percent of polar resin, 1 to 10 percent of heat-resisting resin and 10 to 30 percent of filling oil. A preparation method comprises the following steps of: weighing materials in a raw material formula in a weight ratio, and mixing uniformly; and conveying the mixed materials into a double-screw extruder, and cutting the raw materials by a double screw at high speed, extruding, drawing, cooling, and granulating. The thermoplastic elastomer is used for the secondary sticky ejection with the polyformaldehyde and cladding forming, has the characteristics of high cladding force and high heat-resistant performance, and is particularly suitable for products such as bathroom sprinklers and the like which are used at high temperature.

Description

technical field [0001] The invention discloses a thermoplastic elastomer used for secondary injection bonding with polyoxymethylene and a preparation method thereof, and belongs to the technical field of thermoplastic elastomer manufacturing according to the International Patent Classification (IPC). Background technique [0002] Polyoxymethylene (POM) is a kind of engineering plastic with excellent performance, known abroad as "Duracon" and "Super Steel". POM has the hardness, strength and rigidity similar to metal, and it has good self-lubrication, good fatigue resistance and elasticity in a wide range of temperature and humidity. In addition, it has good chemical resistance. character. At a lower cost than many other engineering plastics, POM is replacing some markets traditionally occupied by metals, such as replacing zinc, brass, aluminum and steel to make many parts. Since its inception, POM has been widely used in electrical and electronic, mechanical , instruments,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/02C08L91/06C08L75/04C08L25/16C08L51/06C08L79/08C08L81/02C08L91/00C08L71/12C08L53/00C08L25/08C08L25/14C08L23/08C08L59/00
Inventor 王子良范荣亮张晓东
Owner 厦门集优新材料有限公司