Water-absorbing rubber composite material and preparation method thereof

A composite material and rubber technology, which is applied in the field of water-absorbing rubber composite materials and its preparation, can solve the problems that it is difficult to satisfy water-absorbing rubber composite materials, it is difficult to quickly reach the state of water absorption balance, and the water absorption effect is not very ideal, so as to achieve good water absorption ratio and good Excellent water absorption rate and aging resistance

Inactive Publication Date: 2020-03-24
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the water absorption rate of the product will also be affected by its size. The thicker the product, the longer it takes to absorb water to reach saturation.
However, in actual production, water-absorbing polyurethane prepolymer materials will cause allergies to workshop workers and have a greater impact on the human body; therefore, the use of water-absorbing resins in water-absorbing rubber composite materials has relatively little impact on the human body.
However, the problem facing the water-absorbing rubber materials using water-absorbing resins is that it is often difficult to quickly reach the water-absorbing equilibrium state for thick products (generally about 10 mm), so the water-absorbing effect is not very ideal.
In order to improve the water absorption rate of water-absorbing rubber composite materials for thick products, water-absorbing additives are often added, but the traditional additives have a single function, and it is difficult to meet the requirements of water-absorbing rubber composite materials

Method used

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  • Water-absorbing rubber composite material and preparation method thereof
  • Water-absorbing rubber composite material and preparation method thereof
  • Water-absorbing rubber composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A water-absorbing rubber composite material, the composite material components include, in parts by mass:

[0041]

[0042] Concrete preparation steps are as follows:

[0043]Preparation of water-absorbing additives: first place glycerin fatty acid ester in an oven at 20°C for 2 hours, select 375g of white carbon black, 750g of bentonite, 250g of PEG1500, 125g of superfine talc powder and 1000g of baked glycerin fatty acid ester into Mix and stir in a high-speed mixer for 8 seconds, control the stirring speed of the mixer to 15000r / min, then discharge to obtain a water-absorbing aid, and set aside;

[0044] Rubber mixing: masticate the raw rubber for 1.5 minutes in a double-roller mixer, then add zinc oxide, stearic acid, vulcanization accelerator, anti-aging agent, and pigment in sequence, cut left and right three times, and then add reinforcing agent and softener , filler, water-absorbing agent, and polyacrylamide water-absorbing resin are added in sequence, the l...

Embodiment 2

[0047] A water-absorbing rubber composite material, the composite material components include, in parts by mass:

[0048]

[0049] Concrete preparation steps are as follows:

[0050] Preparation of water-absorbing aid: After placing propylene glycol fatty acid ester in an oven at 25°C for 1 hour, take 625g of white carbon black, 500g of bentonite, 200g of PEG4000, 100g of superfine talcum powder and 625g of baked propylene glycol fatty acid ester and send them into high-speed mixing Mix and stir in the machine for 3 seconds, control the stirring speed of the mixer to 25000r / min, and then discharge the material to obtain the water-absorbing aid, which is set aside.

[0051] Rubber mixing: masticate the raw rubber for 1.5 minutes in a double-roller mixer, then add zinc oxide, stearic acid, vulcanization accelerator, anti-aging agent, and pigment in sequence, cut left and right three times, and then add reinforcing agent and softener , fillers, water-absorbing additives, and ...

Embodiment 3

[0054] A water-absorbing rubber composite material, the composite material components include, in parts by mass:

[0055]

[0056] Concrete preparation steps are as follows:

[0057] Preparation of water-absorbing aid: After placing sucrose fatty acid ester in an oven at 25°C for 1.5 hours, take 1000g of white carbon black, 125g of bentonite, 50g of PEG6000, 60g of superfine talcum powder and 375g of baked sucrose fatty acid ester and send it into a high-speed Mix and stir in the mixer for 5s, control the stirring speed of the mixer to 20000r / min, and then discharge to obtain a multi-functional water-absorbing aid, which is set aside;

[0058] Rubber mixing: masticate the raw rubber for 1.5 minutes in a double-roller mixer, then add zinc oxide, stearic acid, vulcanization accelerator, anti-aging agent, and pigment in sequence, cut left and right three times, and then add reinforcing agent and softener , fillers, water-absorbing additives, acrylic acid / acrylamide copolymer ...

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Abstract

The invention belongs to the field of composite materials, and specifically relates to a water-absorbing rubber composite material and a preparation method thereof. The water-absorbing rubber composite material comprises the following components by mass: 100 parts of raw rubber, 10-60 parts of water-absorbing resin, 1-45 parts of a water-absorbing aid, 0-6 parts of zinc oxide, 0-2.5 parts of stearic acid, 0.5-3 parts of a vulcanizing agent, 1-5 parts of a vulcanization accelerator, 0.5-3 parts of an anti-aging agent, 10-50 parts of a reinforcing agent, 5-40 parts of a filler, 5-30 parts of a softener and 3-5 parts of a pigment. The water-absorbing rubber composite material is finally vulcanized and molded in a manner of mixing via a double-roller open mill, has high water absorbency, highwater absorption rate, no toxicity, no irritation to workers and excellent comprehensive performance, is applicable to water prevention, water stoppage, leakage stoppage of civil construction engineering such as railways, highways, urban subways, house construction and the like and to the related fields of water pipe joint sealing and the like, and has good market prospects.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a water-absorbing rubber composite material and a preparation method thereof. Background technique [0002] The water-absorbent rubber composite material refers to the mixture and vulcanization of water-absorbent resin or water-absorbent polyurethane prepolymer material and rubber. Because it has a certain water absorption rate and can repeatedly absorb water, it can be used in related fields such as waterproofing, water stoppage and water pipe joint sealing in civil engineering projects such as railways, highways, urban subways, and housing construction. The general processing method of water-absorbent rubber is to put the weighed raw materials into the internal mixer for mixing, after adding vulcanization by the open mill, then extrude through the extruder, and then vulcanize and shape in the oven. Its size can be designed in different thicknesses and widths acco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L33/26C08L71/02C08K13/02C08K3/36C08K3/34C08K5/103C08K3/22C08K5/09C08K3/06C08L29/04C08L7/00C08K5/1535C08K5/14
CPCC08K2003/2296C08L7/00C08L23/16C08L33/26C08L71/02C08K13/02C08K3/36C08K3/34C08K3/346C08K5/103C08K3/22C08K5/09C08K3/06C08L29/04C08K5/1535C08K5/14
Inventor 刘莉康乐张保岗瞿金磊游海军
Owner QINGDAO UNIV OF SCI & TECH
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