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Adhesive for compounding thermoplastic elastomer and metal, and preparation method thereof
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A thermoplastic elastomer, metal composite technology, applied in the adhesive heating bonding method, adhesives, aldehyde/ketone condensation polymer adhesives and other directions, can solve the complex process, metal bonding difficulties, two-component Short processing window and other problems, to achieve the effect of fast curing speed, high bonding strength and cost reduction
Active Publication Date: 2019-12-13
GUIZHOU RES INST OF CHEM IND
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Moreover, during the use of the adhesive, the degree of curing must be controlled by the vehicle speed and temperature, and the process is more complicated.
[0004] In summary, the problems in the prior art are: the existing adhesives between thermoplastic polyurethane elastomer films and other materials can be divided into one-component and two-component, and the storage requirements of the one-component are high, while the two-component short processing window
[0006] TPV is a non-polar material, and it is difficult to bond itself to metal
As an automobile sealing strip, it needs to be able to withstand the temperature of about 80°C for a long time, and be suitable for the continuous production of the sealing strip, which increases the difficulty of developing the adhesive.
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preparation example Construction
[0034] Such as figure 1 As shown, the preparation method of the adhesive for thermoplastic elastomer and metal co-extrusion provided by the embodiment of the present invention comprises the following steps:
[0035] S101: 20% epoxy resin, 10% acrylic resin (self-made), 70% solvent, stirred for 60 min, dissolved evenly, and mixed solution 1 was obtained.
[0036] S102: 10% phenolic resin (self-made), 90% solvent, stirred for 60 minutes, dissolved evenly, and mixed solution 2 was obtained.
[0037] S103: Polyurethane resin (self-made) 10%, solvent 90%, stirred for 90 minutes, dissolved evenly, and mixed solution 3 was obtained.
[0038] S104: chlorinated polypropylene 10%, processing aid 5%, solvent 85%, stirred for 120 min, dissolved evenly, and mixed solution 4 was obtained.
[0039] S105: Put 10 parts of the mixed solution 1, 10 parts of the mixed solution 2, 5 parts of the mixed solution 3 and 100 parts of the mixed solution 4 into the dispersion tank, stir for 30 minutes,...
Embodiment 1
[0043] Two pieces of 25*100mm aluminum strips are cleaned, coated with this adhesive respectively, and dried in an oven at 200°C for 60 seconds. After taking it out and cooling it, insert a 25*80mm TPV sheet (thickness 1mm) between two aluminum strips, clamp it with a clamp, and put it in an oven at 200°C for 10 minutes. Take it out, and after cooling, test the T-peel strength ≧100N, and the TPV material is destroyed.
Embodiment 2
[0045] Mo manufacturers automobile sealing strip production line. The steel belt is cleaned, coated with this adhesive, and passed through a 1-meter-long drying tunnel. The temperature of the drying tunnel is set at 220 ° C, and the extrusion line speed is 8 m / min. After coming out of the drying tunnel, it directly enters the machine head for repressing. After cooling, take samples to test the T-peel strength ≧50N / 10mm, and the TPV material is destroyed.
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technical field [0001] The invention belongs to the technical field of material bonding, and in particular relates to an adhesive used for composite extrusion of thermoplasticelastomer (TPV) and metal and a preparation method thereof. Background technique [0002] At present, the closest existing technology in the industry: thermoplastic elastomer (TPV) has excellent properties such as flexibility, weather resistance, and low temperature resistance. The compound obtained by compounding TPV and metal is widely used in the fields of automobile sealing strips, door and window seals and so on. TPV has rubber-like elasticity and weather resistance, but also has good processability of plastics, and is more and more widely used in the fields of automobile sealing strips and door and window seals. At present, the domestic adhesives used for TPV and metal compounding are mainly imported adhesives from Japan and Germany, and domestic adhesives have not been reported yet. [0003] A...
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