Thermoplastic elastomer composition capable of using in low temperature coated nylon and its preparation method

A thermoplastic elastomer and composition technology, which is applied to the thermoplastic elastomer composition of low temperature coated nylon and its preparation field, can solve the problem of low fluidity of elastomer products, general adhesion of coated nylon, and adhesion of coated nylon. Small and other problems, to achieve the effect of excellent processing performance, wide application range and strong adhesion

Inactive Publication Date: 2014-07-02
SINOTEX INVESTMENT & DEV CO LTD
10 Cites 9 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0005] In patent China CN200610053339.3, CN200910182599.4, CN201010548518.0, CN201110326830.X all contain nylon base material, the defect of the thermoplastic elastomer manufactured by this kind of invention is that the cohesive force of coated nylon is low, and because it contains nylon , when the secondary molding is coated with nylon, the processing temperature is high, which will cause damage to nylon products, such as product deformation, gate sintering, etc.
[0006] In Chinese patents CN200810207539.9 and CN200810060252.8, in addition to nylon base material, the former contains EVA, and the latter contains polyurethane material, and these two materials have slow molding speed and poor heat resistance
Since the manufactured elastomer contains nylon material, high temperature must be used when it is coated with nylon in the secondary molding. In application, this type of product has great defects and has no industrial value
[0007] In Chinese patent CN200580007176.9, this type of elastomer uses 0.5-4% maleic anhydride functionalized polyolefin, 1% functionalized hydrogenated styrenic block copolymer or functionalized styrenic copolymer It is made of polystyrene compound and partially hydrogenated styrenic copolymer with more than 1% to less than 2% functionalization, hydrogenated styrenic block copolymer, etc. Its advant...
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Abstract

The invention provides a thermoplastic elastomer composition capable of using in low temperature coated nylon and its preparation method, and the thermoplastic elastomer composition comprises (1) 50 to 300 parts by weight of a functionalized polymer; (2) 100 parts by weight of a hydrogenated styrene butadiene rubber thermoplastic elastomer; (3) 5-50 parts by weight of a styrene polymer; (4) 50-250 parts by weight of filling oil; (5) 50-300 parts by weight of an inert filler; and (6) 0.1-0.6 part by weight of an additive, weight. The thermoplastic elastomer composition capable of using in the low temperature coated nylon can be used in low temperature secondary-moulding coated nylon, and is strong in binding power, good in fluidity and beautiful in coated product appearance, and excellent in secondary-moulding processing properties, and the nylon binding power of the thermoplastic elastomer composition can be adjusted by variation of secondary injection moulding temperature, thermoplastic elastomers with different requirements on the bonding effect can be met, and the applied range is wider.

Technology Topic

ChemistryButadiene-styrene rubber +5

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  • Thermoplastic elastomer composition capable of using in low temperature coated nylon and its preparation method

Examples

  • Experimental program(1)

Example Embodiment

[0052] The present invention will be further described below in conjunction with specific embodiments. However, these examples are only for illustrative purposes, and are not used to limit the protection scope of the present invention.
[0053] First, the styrene-butadiene rubber thermoplastic elastomer and the filler oil are mixed in a high-speed mixer, and then other materials are added to the mixer according to a certain ratio to blend, and then the CTE35 twin screw of Coperion Keya (Nanjing) Machinery Co., Ltd. High-speed shearing melt blending is carried out in the extruder, and the second molding is carried out on the CJ80E injection molding machine of Guangdong Zhende Plastic Machinery Factory to cover the material with nylon as the matrix. The test adhesion and coating force is in accordance with GB/T2790 -1995 standard for testing, hardness test is in accordance with ISO868 standard, tensile strength and elongation test are installed according to ISO37 standard. The raw materials used in the experiment are as follows:
[0054] Polypropylene selected M800E, produced for Sinopec;
[0055] MB528D is selected for grafting PE, which is produced by American DuPont;
[0056] HIPS selects PH88, which is produced by Taiwan Chi Mei Chemical Company;
[0057] GPPS selected PG33, which was produced by Taiwan Chi Mei Chemical Company;
[0058] The styrene-butadiene rubber thermoplastic elastomer is YH503, which is the product of Yueyang Petrochemical; A1536 is the product of U.S. Kraton;
[0059] The filling oil is white oil Pionier2071P, which is a product of German Hansheng Company;
[0060] The filling material is calcium carbonate LD400, which is a product of Suzhou Lida Company;
[0061] The heat stabilizer is B225, which is a product of BASF;
[0062] PA6 uses Guangdong Xinhui Meida M2800, which is also used as substrate A;
[0063] PA66 uses Henan Shenma nylon FTY27, which is also used as substrate B;
[0064] 30% glass fiber reinforced nylon is a commercially available conventional product, as the substrate C.
[0065] The characterization of the bonding effect mainly includes the following states: the peel strength is represented by data, where the peel strength is less than 0-0.5KN/m, which means that the bonding force is very small, represented by the letter NO; the peel strength is 0.5-1.0KN/m, It means that there is a certain degree of adhesion, but its bonding performance is general; the peeling strength is between 1.0-1.5KN/m, which indicates good bonding performance; the peeling strength is 1.5-1.8KN/m, which indicates that the bonding performance is good; The strength is above 1.8KN/m, which means its excellent bonding performance. The test description of the peeling effect of the coating is accompanied by the description of the test phenomenon, such as cohesive failure.
[0066] The specific experiment list is as follows:
[0067] Table I
[0068] Ingredients
[0069] Table II
[0070] Ingredients
[0071] B225
[0072] Table Three
[0073]
[0074] From Table 3 above, it can be known that when the secondary injection molding temperature reaches 180°C, the product basically has a certain bonding performance; when the secondary injection molding temperature reaches 220°C, most of the products reach cohesive failure, indicating The bonding performance achieves very good results. Moreover, the peel strength is different at different temperatures, and customers can use different temperatures according to different requirements.
[0075] The present invention provides a thermoplastic elastomer composition that can be used for low-temperature coating of nylon and a preparation method thereof. The thermoplastic elastomer composition can be used for low-temperature secondary molding to cover nylon, with strong adhesion, good fluidity and coating. The appearance of the product is beautiful; the secondary molding processing performance is excellent, and the adhesive force of the coated nylon can be adjusted through different secondary injection molding temperatures to meet the different requirements of the bonding effect of the thermoplastic elastomer, so that it can be used in a wider range.
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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