Preparation method of natural rubber pressure sensitive adhesive

A pressure-sensitive adhesive, natural rubber technology, applied in the direction of natural rubber adhesives, adhesives, adhesive types, etc., can solve the problems of poor aging resistance, and achieve poor aging resistance, good adhesion, and low temperature performance. Effect

Inactive Publication Date: 2013-04-03
张芳远
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to provide a method for preparing natural rubber pressure-sensitive adhesives in batches. Natural rubber pressure-sensitive adhesives are produced with chemical reaction kettles as auxiliary materials and with appropriate temperature and reaction time. The disadvantage of poor aging resistance has been greatly improved by adding modified rubber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The natural rubber accounting for 8% of the total amount is sent to the open mill for masticating. The masticating time is about 10 minutes, and then 3% of the total amount of butyl rubber, 3% of polysulfide rubber, and 9% of Alumina powder and 1% anti-aging agent RD are sent into the open mill and mixed with natural rubber, and then masticated for 5 minutes; benzene and solvent gasoline, which account for 62% of the total amount, are sent into the chemical reaction kettle in a 1:3 mixture. Heat up to 30°C while stirring, add 10% of coumarone resin, 2% of dioctyl phthalate, and 2% of lanolin into the chemical reaction kettle, stir until completely dissolved, and then put the plastic Add the smelted rubber, continue to stir until it completely dissolves into a uniform glue, cool down to room temperature and pack to get the finished product.

Embodiment 2

[0013] The natural rubber accounting for 9% of the total amount is sent to the open mill for masticating. The masticating time is about 10 minutes, and then 3% of the total amount of butyl rubber, 3% of polysulfide rubber, and 9% of Alumina powder and 1% anti-aging agent RD are sent into the open mill and mixed with natural rubber, and then masticated for 5 minutes; benzene and solvent gasoline, which account for 61% of the total amount, are sent into the chemical reaction kettle in a 1:3 mixture. Heat up to 30°C while stirring, add 10% of coumarone resin, 2% of dioctyl phthalate, and 2% of lanolin into the chemical reaction kettle, stir until completely dissolved, and then put the plastic Add the smelted rubber, continue to stir until it completely dissolves into a uniform glue, cool down to room temperature and pack to get the finished product.

Embodiment 3

[0015] The natural rubber accounting for 10% of the total amount is sent to the open mill for masticating. The masticating time is about 10 minutes, and then 3% of the total amount of butyl rubber, 3% of polysulfide rubber, and 9% of Alumina powder and 1% anti-aging agent RD are sent to the open mill and mixed with natural rubber and then masticated for 5 minutes; benzene and solvent gasoline accounting for 60% of the total are sent to the chemical reaction kettle in a mixture of 1:3. Heat up to 30°C while stirring, add 10% of coumarone resin, 2% of dioctyl phthalate, and 2% of lanolin into the chemical reaction kettle, stir until completely dissolved, and then put the plastic Add the smelted rubber, continue to stir until it completely dissolves into a uniform glue, cool down to room temperature and pack to get the finished product.

[0016]

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PUM

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Abstract

The invention discloses a preparation method of a natural rubber pressure sensitive adhesive, and belongs to the field of chemical industry. The natural rubber pressure sensitive adhesive is prepared by taking natural rubber, butyl rubber, polysulfide rubber, a mixture of benzene and solvent gasoline, coumarone resin, dioctyl phthalate, lanolin, alumina powder and anti-aging agent RD as raw materials and using a chemical reaction kettle as a reaction container based on proper temperature and a proper reaction duration. The preparation method disclosed by the invention has the advantages of simple production process and general purpose of the adopted equipment; the product is good in permanent adhesion, excellent in low-temperature performance, rapid in adhesion and good in adhesive force, and the shortcoming of poor aging resistance is greatly improved by the addition of a modified rubber.

Description

technical field [0001] The product of the invention belongs to the chemical industry field, and in particular relates to a preparation method of a natural rubber pressure-sensitive adhesive. Background technique [0002] Pressure-sensitive adhesives are a class of adhesives that are sensitive to pressure and are mainly used in the preparation of pressure-sensitive tapes. [0003] Pressure-sensitive adhesives can be divided into rubber type and resin type according to the composition, and rubber type can be divided into natural rubber type and synthetic rubber type; resin type mainly includes acrylic type, silicone type and polyurethane type; Divided into water-based and solvent-based pressure-sensitive adhesives. In addition to the main component of rubber, the preparation of rubber pressure-sensitive adhesives also needs to add solvents, tackifying resins, plasticizers, fillers, vulcanizing agents, anti-aging agents, etc.; Foaming agent, leveling agent, wetting agent, etc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J107/00C09J145/02C09J123/22C09J181/04C09J11/04C09J11/06
Inventor 不公告发明人
Owner 张芳远
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