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Preparation method for xanthan gum-lignin powder chloroprene rubber

A chloroprene rubber and lignin technology, applied in the field of xanthan gum-lignin modified powder chloroprene rubber and its preparation, can solve the problem of low utilization rate and the like

Inactive Publication Date: 2016-07-06
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Industrial lignin mainly comes from the cooking wastewater of the paper and pulp industry. The world can produce 30 million tons per year, but the utilization rate is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054]① Dispersion of xanthan gum, montmorillonite and lignin: In a mixer, add 50 parts by mass of water and 1 part of xanthan gum, start the mixer and stir until the xanthan gum is completely dissolved; in another mixer, add 10 parts by mass of water, 1 part of montmorillonite, start the agitator and stir until the montmorillonite is evenly dispersed; in another stirrer, add 10 parts by mass of water, 0.2 part of lignin, start the agitator and stir until the lignin is completely dissolved. ②Preparation of grafted latex: Add 100 parts of chloroprene latex with a solid content of 25% to 35%, 50 parts of water, ① medium xanthan gum and montmorillonite, 0.2 part of regulator D, and nitrogen in the polymerization kettle. After the replacement, stir and heat, and when the temperature of the polymerization tank reaches 20°C, add 0.04 parts (20% of 0.2 parts) of potassium persulfate-sodium sulfite acid to the total mass of potassium persulfate-sodium sulfite acid, stir and heat for 3 ...

Embodiment 2

[0058] ① Dispersion of xanthan gum, montmorillonite and lignin: In a mixer, add 100 parts by mass of water and 1 part of xanthan gum, start the mixer and stir until the xanthan gum is completely dissolved; in another mixer, add 20 parts by mass of water, 1 part of montmorillonite, start the stirrer and stir until the montmorillonite is evenly dispersed; in another stirrer, add 5 parts by mass of water, 0.2 part of lignin, start the stirrer and stir until the lignin is completely dissolved. ②Preparation of grafted latex: Add 100 parts of neoprene latex with a solid content of 25% to 35%, 100 parts of water, ① medium xanthan gum and montmorillonite, 1.4 parts of regulator D, and nitrogen gas After the replacement, stir and heat, and when the temperature of the polymerization tank reaches 30°C, add 0.06 parts (20% of 0.3 parts) of potassium persulfate-sodium sulfite acid to the total mass of potassium persulfate-sodium sulfite acid, stir and heat for 3 hours, and add the remaining...

Embodiment 3

[0062] ① Dispersion of xanthan gum, montmorillonite and lignin: In a mixer, add 300 parts by mass of water, 4 parts of xanthan gum, start the mixer and stir until the xanthan gum is completely dissolved; in another mixer, add 30 parts by mass of water, 5 parts of montmorillonite, start the stirrer and stir until the montmorillonite is evenly dispersed. In another stirrer, add 10 parts by mass of water and 1 part of lignin, and start the stirrer to stir until the lignin is completely dissolved. ②Preparation of grafted latex: Add 100 parts of chloroprene latex with a solid content of 25% to 35%, 160 parts of water, ① medium xanthan gum and montmorillonite, 1.0 parts of regulator D, and nitrogen gas to the polymerization kettle. After the replacement, stir and heat, and when the temperature of the polymerization tank reaches 35°C, add 0.1 part (20% of 0.5 part) of potassium persulfate-sodium sulfite acid to the total mass of potassium persulfate-sodium sulfite acid, stir and heat...

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Abstract

The invention provides a preparation method for xanthan gum-lignin powder chloroprene rubber, which includes: 1) preparation of grafted latex: successively adding chloroprene latex, water, xanthan gum, montmorillonite and a molecular weight regulator into a polymerization kettle, performing nitrogen gas replacement, stirring and heating the substances, and adding a part of an initiator accounting for 20-30% of the total mass of the initiator when the temperature in the polymerization kettle reaches 20-35 DEG C, and stirring and heating the substances for 1-3 h, and adding the rest of the initiator, and performing a grafted polymerization reaction at 30-50 DEG C, and adding a terminating agent when polymerization conversion rate is 65-75% to prepare the grafted latex; and 2) powder forming through coagulation: adding the grafted chloroprene latex into a coagulation kettle, adding lignin at the coagulation temperature of 10-30 DEG C, stirring the mixture uniformly and adding an isolation agent, stirring the mixture for 20-40 min, and adding a coagulation reagent with full stirring and uniform mixing, and increasing the temperature to 20-60 DEG C and aging the mixture for 4-6 h, and separating, dehydrating and drying the mixture to prepare modified powder chloroprene rubber.

Description

technical field [0001] The invention belongs to the preparation of powdered neoprene rubber, relates to the field of adhesives, in particular to a class of xanthan gum-lignin modified powdered neoprene rubber and a preparation method thereof. Background technique [0002] Neoprene is a rubber-type adhesive with excellent performance. It is widely used in shoemaking, construction and automobile manufacturing industries because of its excellent properties such as high bonding strength, water resistance, oil resistance, acid and alkali resistance, and corrosion resistance. . In recent years, with the development of the domestic construction and decoration industry, higher and newer requirements have been put forward for the quality of adhesives. Due to the influence of the formulation process itself or the construction environment, there will be one or another abnormality during the use of the glue. For example: the stickiness does not last long, and the glue is easy to die; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/04C08L97/00C08F299/00C08F2/44C08K3/34C08C1/15
Inventor 魏绪玲高磊魏玉丽赵玉中付含琦丛日新张华强刘义吴宇龚光碧梁滔郑聚成李晶陈建刚武爱军徐典宏艾纯金朱晶马朋高
Owner PETROCHINA CO LTD