Polyolefin box sealing glue and preparation method thereof

A polyolefin sealing and polyolefin technology, applied in the direction of adhesives, mineral oil hydrocarbon copolymer adhesives, adhesive types, etc., can solve problems such as poor thermal stability, achieve short curing time, avoid aging, Effect of good polymer compatibility

Active Publication Date: 2016-12-21
VALENCE BONDING TECH SHANGHAI CO LTD
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AI-Extracted Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of polyolefin sealing glue and its preparation method, this polyolefin sealing glue can overcome the thermal stability of existing polyolefin sealing glue is not good, can appear the problem of low-temperature or high-temperature glue-opening phenomenon, the present inventi...
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Method used

[0030] Step 2: The polyolefin plastic body, 2/3 of the petroleum resin, 2/3 of the tackifying resin and antioxidant are added to the stirring tank, and the stirring speed is 20 rpm. In this step, due to the low viscosity of the melted wax, some p...
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Abstract

The invention discloses polyolefin box sealing glue and a preparation method thereof. The polyolefin box sealing glue is prepared from the following raw materials in percentage by weight: 30 to 50 percent of polyolefin plastic bodies, 15 to 25 percent of wax, 10 to 20 percent of petroleum resin, 20 to 30 percent of tackifying resin and 0 to 1.0 percent of antioxidants. The preparation method of the polyolefin box sealing glue concretely comprises the following steps that 1, a stirring container is heated; wax is fed into a stirring container; stirring is started; 2, the polyolefin plastic bodies, partial petroleum resin and partial tackifying resin are added into the stirring container to be stirred; 3, vacuum pumping is performed; 4, the rest petroleum resin and the rest tackifying resin are fed for heating; 5, the materials in the stirring container are subjected to temperature reduction and are discharged; 6, all basic indexes of the product are detected. The polyolefin box sealing glue and the preparation method of the polyolefin box sealing glue provided by the invention have the advantages that the polyolefin box sealing glue has good thermal stability effect and strong thermal viscous force; the curing time is extremely short; the requirements of a fast production line can be met.

Application Domain

Technology Topic

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  • Polyolefin box sealing glue and preparation method thereof
  • Polyolefin box sealing glue and preparation method thereof
  • Polyolefin box sealing glue and preparation method thereof

Examples

  • Experimental program(1)
  • Effect test(1)

Example Embodiment

[0023] The following embodiments further illustrate the technical solution of the present invention.
[0024] The present invention is used to provide a polyolefin sealing glue and a preparation method thereof. The polyolefin sealing glue contains the following raw materials in weight percentage: 30-50% polyolefin plastic body, 15-25% wax, and 10-25% petroleum resin. 20%, 20-30% of tackifying resin and 0-1.0% of antioxidant.
[0025] Among them, the glass transition temperature of the polyolefin plastic body is -60°C, the wax is polyethylene wax, the petroleum resin is a hydrogenated C5 petroleum resin with a softening point of 100°C, and the tackifying resin is a hydrogenated C5 petroleum resin with a softening point of 115°C. The antioxidant is a composite antioxidant containing hindered phenol and phosphite.
[0026] Among them, the wax is Bareco SX 100, the petroleum resin is Eastotal C 100W, the tackifying resin is Eastotal C 115W, and the antioxidant is Irganox B 225.
[0027] The polyolefin sealing glue contains the following raw materials in weight percentage: 39.8% polyolefin plastic body, 19.9% ​​wax, 14.9% petroleum resin, 24.8% tackifying resin and 0.6% antioxidant.
[0028] The present invention also provides a preparation method of the polyolefin sealing glue. The specific steps are as follows:
[0029] Step 1: Weigh each raw material in the above weight percentage, set the temperature of the stirred tank to 130°C, and start heating. Put the wax into the stirring tank and start stirring at 10 rpm. When the wax is lumpy wax, the stirring is turned on after 10-20 minutes of the wax, and the stirring speed is increased by 20 revolutions per minute every 10 minutes until 60 revolutions per minute. Melt the wax until the wax is completely melted, proceed to the next step;
[0030] Step 2: Add the polyolefin plastic body, 2/3 of the petroleum resin, 2/3 of the tackifying resin and antioxidant into the stirred tank at a stirring speed of 20 rpm. In this step, because the viscosity of the melted wax is low, part of the petroleum resin is added first, so that the colloid maintains a certain viscosity at high temperature. During stirring, it forms good stirring and shearing on the polyolefin plastic body, which is beneficial to polyolefin Melting of plastic bodies;
[0031] Step 3: Vacuum, adjust the nitrogen valve according to the product liquid level, and gradually increase the vacuum in the stirred tank to 0.08Mpa;
[0032] Step 4: When the material temperature reaches about 125°C, put the remaining 1/3 of the petroleum resin and the tackifying resin into the stirred tank. When continuing to melt the remaining materials, open the discharge pipe and heat it for 20 minutes;
[0033] Step 5: According to the hardness requirements of the materials when discharging, use the oil temperature machine to reduce the temperature of the materials in the stirred tank to 85℃-100℃, and turn off the discharging pipeline to heat. The hardness requirement means that the material should neither be too brittle nor too soft when it comes into contact with ice water. When it is too brittle, the material will easily break into powder after passing through the cutter, and it will not form beautiful round particles. When it is too soft, it will easily stick to the cutter;
[0034] Step 6: Detect the basic indicators of the product, including thermal stability indicators, viscosity and softening point. The viscosity of the product is 1200-1600cps at 50rpm and 160℃, and the softening point is 100℃~110℃.
[0035] The evaluation method of the polyolefin sealing glue:
[0036] 1. Thermal stability
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PUM

PropertyMeasurementUnit
Glass transition temperature60.0°C
Softening point100.0°C
Softening point115.0°C
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

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