Neoprene adhesive subjected to secondary graft modification and preparation method of neoprene adhesive

A chloroprene rubber, graft modification technology, applied in the direction of graft polymer adhesives, adhesives, adhesive types, etc., can solve the problems of low comprehensive performance of adhesives, low conversion rate of grafting reaction, high production cost, etc. , to achieve the effect of good yellowing resistance, good operability and comprehensive cost reduction

Inactive Publication Date: 2014-06-18
ZHUHAI YUTIAN CHEM PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solvents similar to "triphenyl" such as hydroquinone are used in the components of the present invention, which may cause pollution to the environment, and the conversion rate of the grafting reaction is low, resulting in high production costs, and no active monomers are used in the process In the method of secondary grafting, the overall performance of the adhesive is low

Method used

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  • Neoprene adhesive subjected to secondary graft modification and preparation method of neoprene adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Install the reflux device, turn on the power, start the mixer, and at a speed of 300r / min-500r / min, add 50 parts of acetone, 204 parts of butanone, 125 parts of ethyl acetate, and dimethyl carbonate to the reaction kettle in sequence 120 parts, 195 parts of methylcyclohexane, mixed and stirred evenly;

[0032] 2) Turn on the reflux device, adjust the heating mantle to raise the temperature to 50-60°C, control the stirring speed at 500r / min-800r / min, add 130 parts of neoprene, and stir for 2-4 hours until the film is completely dissolved;

[0033] 3) Keep the reflux temperature at 70-90°C and the stirring speed at 20-80r / min. Add 1 part of initiator, continue to stir for 15 minutes, then add 91 parts of methyl methacrylate dropwise, and react at constant temperature for 0.5-1 hour;

[0034] 4) Keep the reflux temperature at 70-90°C, add 9.3 parts of acrylic acid and 2 parts of the remaining initiator, and react at a constant temperature of 70-90°C for...

Embodiment 2

[0038] 1) Install the reflux device, turn on the power, start the mixer, at the speed of 300r / min-500r / min, add 65 parts of acetone, 190 parts of butanone, 118 parts of ethyl acetate, 140 parts of dimethyl carbonate, methyl 200 parts of cyclohexane, mixed and stirred evenly;

[0039] 2) Turn on the reflux device, adjust the heating mantle, raise the temperature to 50-60°C, control the stirring speed at 500r / min-800r / min, add 128 parts of neoprene, stir for 2-4 hours, until the film is completely dissolved;

[0040] 3) Keep the reflux temperature at 70-90°C and the stirring speed at 20-80r / min. Add 0.9 parts of initiator, continue to stir for 15 minutes, then add 89 parts of methyl methacrylate dropwise, and react for 0.5-1 hour;

[0041] 4) Keep the reflux temperature at 70-90°C, add quantitative 8.1 parts of butyl methacrylate and 2.1 parts of the remaining initiator, react at 70-90°C for 2-5 hours, when the viscosity reaches 3000-5000cps, it is regarded as ...

Embodiment 3

[0045]1) Install the reflux device, turn on the power, start the mixer, at the speed of 300r / min-500r / min, add 55 parts of acetone, 245 parts of butanone, 118 parts of ethyl acetate, 140 parts of dimethyl carbonate, methyl 200 parts of cyclohexane, mixed and stirred evenly;

[0046] 2) Turn on the reflux device, adjust the heating mantle, raise the temperature to 50-60°C, control the stirring speed at 500r / min-800r / min, add 128 parts of neoprene, stir for 2-4 hours, until the film is completely dissolved;

[0047] 3) Keep the reflux temperature at 70-90°C and the stirring speed at 20-80r / min. Add 1.2 parts of initiator, continue to stir for 15 minutes, then add 90 parts of methyl methacrylate dropwise, and react for 0.5-1 hour;

[0048] 4) Keep the reflux temperature at 70-90°C, add 9 parts of quantitative hydroxyethyl methacrylate and 2.3 parts of the remaining initiator, react at 70-90°C for 2-5 hours, when the viscosity reaches 3000-5000cps, depending on for t...

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Abstract

The invention discloses a neoprene adhesive subjected to secondary graft modification and a preparation method of the neoprene adhesive. The neoprene adhesive comprises the following raw materials (in percentage by weight): 10%-15% of neoprene, 6.3%-13% of grafted monomers, 0.1%-0.5% of initiating agents, 5%-10% of acetone, 15%-30% of butanone, 10%-20% of ethyl acetate, 10%-20% of dimethyl carbonate, 8%-20% of methyl cyclohexane, 5%-10% of thickening agents and 0.3%-1% of terminating agents. The preparation method comprises the following steps of sequentially adding acetone, butanone, ethyl acetate, dimethyl carbonate and methyl cyclohexane, and uniformly mixing and stirring; adding neoprene, and stirring for 2-4 hours; adding a part of the initiating agents, further stirring, then dropping first grafted monomers to react for 0.5-1 hour, and adding second grafted monomers and the rest of initiating agents; adding a terminating agent, and then adding tackifying resin; regulating viscosity, and then discharging. The neoprene adhesive disclosed by the invention is subjected to the secondary graft modification through multiple monomers. The product has the characteristics of high comprehensive property and good environmental friendliness and is suitable for industries, such as furniture making, shoe making and luggage.

Description

[0001] technical field [0002] The invention belongs to the technical field of rubber, and in particular relates to a neoprene adhesive modified by secondary grafting and a preparation method thereof. Background technique [0003] Neoprene is a synthetic rubber compound that is produced in large quantities to make adhesives for a wide range of applications. The structure of chloroprene rubber is relatively regular, and there are chlorine atoms with high polarity, so it has high crystallinity. It has good bonding performance and large cohesive strength at room temperature, and is very suitable as an adhesive. The characteristics of the adhesive are: large initial adhesion, high bonding strength, good durability, flexible adhesive layer, good elasticity, impact and vibration resistance, good oil resistance, water resistance, alkali resistance, acid resistance, and solvent resistance. The materials have good adhesion, easy to use and low price. [0004] Benzene, toluene, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/04C08F285/00
Inventor 董磊张云云赵景雄王雷彭洁之
Owner ZHUHAI YUTIAN CHEM PROD
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