A special adhesive for Velcro for high temperature aging resistance and preparation method thereof
A Velcro and high-temperature-resistant technology, applied in the field of pressure-sensitive adhesives, can solve problems such as difficult to meet the comprehensive performance requirements of Velcro, affect the promotion and use of adhesive Velcro, and affect the user experience, etc., to achieve strong industrial application value and development Prospect, excellent initial tack, good stickiness effect
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[0066] In a preferred embodiment, the preparation method of the maleic anhydride modified polyolefin resin comprises the steps of:
[0067] Step 1. Under nitrogen atmosphere, add 3 to 5 parts of maleic anhydride, 0.5 to 1 part of initiator, 20 to 30 parts of polyolefin resin, 10 ~20mL solvent A, heated to 40~60℃, stirred for 40~50min to obtain the mixture;
[0068] Step 2. Rapidly raise the temperature of the obtained mixture to 70-80°C, and after constant temperature reaction for 3-5 hours, pour it into 80-120mL solvent B and keep stirring to obtain flocs;
[0069] In step ③, the floc obtained in step ② is filtered, washed and dried to obtain a maleic anhydride-modified polyolefin resin.
[0070] In a more preferred embodiment, the preparation method of the maleic anhydride modified polyolefin resin comprises the steps of:
[0071] Step 1. Under a nitrogen atmosphere, add 4 parts of maleic anhydride, 0.7 parts of initiator, 25 parts of polyolefin resin, and 15 mL of solvent...
Embodiment 1
[0116] Embodiment 1 of the present invention provides a Velcro special glue, comprising the following raw materials in parts by mass: 45 parts of composite elastic body, 25 parts of tackifying resin, 8 parts of reinforcing resin, 11 parts of softener, 3 parts of antioxidant, 2 parts of UV absorber, 1.5 parts of pigment.
[0117] Described composite elastomer is the mixture of thermoplastic elastomer A and thermoplastic elastomer B; Described thermoplastic elastomer A is the SIS thermoplastic elastomer that diblock content is 50wt%; Described thermoplastic elastomer B is that diblock content is 18 wt% SIS thermoplastic elastomer; the mass ratio of thermoplastic elastomer A and thermoplastic elastomer B in the composite elastomer is 1:1.5.
[0118] The tackifying resin is petroleum resin; the petroleum resin is C5 aliphatic petroleum resin.
[0119] The reinforcing resin is a polyolefin resin; the polyolefin resin is a modified polyolefin resin; the modified polyolefin resin is...
Embodiment 2
[0130] Embodiment 2 of the present invention provides a Velcro special glue, comprising the following raw materials in parts by mass: 40 parts of composite elastic body, 20 parts of tackifying resin, 6 parts of reinforcing resin, 10 parts of softener, 2 parts of antioxidant, 1 part of UV absorber, 1 part of pigment.
[0131] Described composite elastomer is the mixture of thermoplastic elastomer A and thermoplastic elastomer B; Described thermoplastic elastomer A is the SIS thermoplastic elastomer that diblock content is 50wt%; Described thermoplastic elastomer B is that diblock content is 18 wt% SIS thermoplastic elastomer; the mass ratio of thermoplastic elastomer A and thermoplastic elastomer B in the composite elastomer is 1:1.5.
[0132] The tackifying resin is petroleum resin; the petroleum resin is C5 aliphatic petroleum resin.
[0133] The reinforcing resin is a polyolefin resin; the polyolefin resin is a modified polyolefin resin; the modified polyolefin resin is a m...
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Abstract
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