TPE material for bonding polyformaldehyde (POM) and preparation method of TPE material
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A bonding and raw material technology, applied in the direction of adhesives, wax adhesives, adhesive types, etc., can solve the problems of difficult bonding of POM, strong tensile strength, etc., to achieve enhanced adhesive force, improved tensile strength, Effect of good stability and aging resistance
Active Publication Date: 2020-02-04
张家港市美特高分子材料有限公司
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[0004] The first technical problem to be solved by the present invention is to provide a TPE material for bonding POM. Difficult Bonding Problems
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[0035] The above-mentioned preparation method for bonding the TPE material of POM, comprises the following steps:
[0036] 1) Mix the non-oil-extended styrene-ethylene-butylene-styrene block copolymer SEBS and mineral oil according to the ratio of 1:0.5-2, and stir at a high speed with a mixer to obtain oil-extended styrene-ethylene- Butylene-styrene block copolymer SEBS, the speed of the mixer is 1000 rpm, and the mixing time is 3 minutes.
[0038] 3) The premix is melted, kneaded, extruded, cooled, dried, pelletized and packaged through a twin-screw extruder.
[0039] Among them, the temperature zone control of the twin-screw extruder is: 120°C, 160°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 180°C °C, 200 °C.
Embodiment 1
[0041] Styrene-ethylene-butylene-styrene block copolymer SEBS is Taiwan Rubber 6151, 25 parts; polypropylene is Formosa Plastics 5090T, 17 parts; paraffin oil is Ssangyong 250N, 20 parts; PU copolymer is Kuraray TU- S5265, 18 parts; talcpowder 9.5 parts, lubricantzincstearate 0.15 parts, erucamide 0.35 parts, antioxidant Irganox1010, 0.1 parts; Irganox168, 0.2 parts.
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Abstract
The invention discloses a TPE material for bonding polyformaldehyde (POM). The TPE material is prepared from the following raw materials in parts by weight: 25-30 parts of styrene-ethylene-butane-styrene (SEBS) block copolymer, 15-20 parts of polypropylene, 20-30 parts of mineral oil, 15-20 parts of a PU copolymer, 5-10 parts of talcum powder, 0.5-1 part of a lubricant and 0.15-0.3 part of an antioxidant. SEBS in the TPE material components contains unsaturated double bonds and has good stability and aging resistance, heat resistance of the SEBS is significantly improved compared with heat resistance of SBS, and good wear resistance and flexibility are achieved; compatibility between the polypropylene and a PS segment in the SEBS is good, double continuous phases can be formed, and thus the tensile strength of TPE is improved; compatibility between the PU copolymer and the SEBS is good, double continuous phases can be formed, and the overall mechanical properties are improved; and thePU copolymer contains a PU polar segment, thus material polarity is high, and bonding force is increased.
Description
technical field [0001] The invention relates to a TPE material for bonding POM and a preparation method thereof. Background technique [0002] Polyoxymethylene, abbreviated as POM, is a linear polymer with no side chains, high density, and high crystallinity. It has excellent comprehensive properties: the tensile strength of polyoxymethylene reaches 70MPa, low water absorption, stable size, and luster , These properties are better than nylon, polyoxymethylene is a highly crystalline resin, the toughest in thermoplastic resins, with high heat resistance, bending strength, high fatigue resistance, excellent wear resistance and electrical properties. Polyoxymethylene is a hard and dense material with a smooth surface, glossy, light yellow or white, and can be used for a long time in the temperature range of -40-100 ° C. Its wear resistance and self-lubrication are also better than most engineering materials. Plastic is superior, but also has good oil resistance and peroxide re...
Claims
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