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Novel poly-sulfide rubber waterproof material and preparation method thereof

A technology of polysulfide rubber and waterproof material, applied in the field of polysulfide rubber material, can solve the problems of toxic waste water discharge, large pollution discharge, environmental pollution, etc., and achieves increased impact strength, low water vapor transmission rate, and no environmental pollution. Effect

Inactive Publication Date: 2018-03-09
SHENYANG SHUNFENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Compared with the sodium disulfide process, the sodium tetrasulfide process has high reactivity and good mechanical properties, but the raw material utilization rate of the sodium tetrasulfide process is only about 35% less than the 55% of the sodium disulfide process, so The raw material consumption of the sodium tetrasulfide process is large, the pollution discharge is large, and its viscosity is unstable, which cannot meet the requirements of the mechanized glue coating production line.
However, this method has a large amount of toxic waste water discharged, which pollutes the environment and is not suitable for industrial production.

Method used

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  • Novel poly-sulfide rubber waterproof material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A polysulfide rubber waterproof material is prepared from the following raw materials in parts by weight.

[0026] 180 parts of polyethylene adipate (relative molecular mass: 1100), 145 parts of aromatic diisocyanate, 90 parts of 2-mercaptoethanol, 8 parts of zinc oxide, 2 parts of regulator phosphoric acid and 2 parts of oxalic acid, acidic catalyst toluene 1 part of acid amine, 9 parts of plasticizer phthalate, 9 parts of epoxy resin reactive diluent, 4 parts of crosslinking agent, 4 parts of reinforcing agent carbon black.

[0027] The preparation steps are as follows:

[0028] (1) Synthesis of prepolymer: Weigh polyethylene adipate and regulator according to parts by weight, put them into a mixer and stir evenly, the stirring speed is 35r / min, and the stirring time is 5min, and stir evenly Put the mixed material into the cylinder stirring vacuum dryer, vacuum dehydrate under the conditions of 110°C~130°C, 0.083~0.087Mpa, until the water content is ≥0.05%; cool down...

Embodiment 2

[0032] A polysulfide rubber waterproof material is prepared from the following raw materials in parts by weight.

[0033] 185 parts of polyethylene adipate (relative molecular mass: 1300), 138 parts of aromatic diisocyanate, 85 parts of 2-mercaptopropanol, 9 parts of zinc oxide, 2 parts of regulator oxalic acid and 2 parts of acetic acid, acidic catalyst 1 part of ammonium toluamide, 4 parts of plasticizer phthalate and 5 parts of chlorinated paraffin, 7 parts of epoxy resin reactive diluent, 4 parts of crosslinking agent, 4 parts of reinforcing agent carbon black.

[0034] The preparation method is the same as that in Example 1.

Embodiment 3

[0036] A polysulfide rubber waterproof material is prepared from the following raw materials in parts by weight.

[0037] 190 parts of polyethylene adipate (relative molecular mass: 1500), 131 parts of aromatic diisocyanate, 80 parts of 3-mercaptopropanol, 10 parts of zinc oxide, 2 parts of regulator phosphoric acid and 2 parts of acetic acid, acidic catalyst 1 part of ammonium toluamide, 4 parts of plasticizer phthalate and 5 parts of phosphate ester, 8 parts of epoxy resin reactive diluent, 4 parts of crosslinking agent, 4 parts of reinforcing agent carbon black.

[0038] The preparation method is the same as that in Example 1.

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Abstract

The invention belongs to the technical field of polysulfide rubber materials, and relates to a novel polysulfide rubber waterproof material and a preparation method thereof. The novel polysulfide rubber waterproof material of the present invention is prepared from the following raw materials in parts by weight: 180-210 parts of polyethylene adipate, 110-150 parts of aromatic diisocyanate, and 80-100 parts of terminal mercapto alcohols , 5-10 parts of zinc oxide, 3-5 parts of regulator, 1-2 parts of acid catalyst, 8-10 parts of plasticizer, 5-10 parts of reactive diluent, 3-5 parts of crosslinking agent, 3 parts of reinforcing agent ‑5 parts; the preparation method of the present invention adopts addition polymerization process and special catalytic process without any three wastes to produce, does not pollute the environment, and can be industrialized on a large scale. The new polysulfide rubber waterproof material of the present invention absorbs the advantages of polyurethane rubber and polysulfide rubber, abandons the shortcomings of both, has high strength, good elasticity, low water vapor transmission rate, good sealing performance, aging resistance and low temperature resistance Good, good adhesion to the cement surface.

Description

technical field [0001] The invention belongs to the technical field of polysulfide rubber materials, and relates to a novel polysulfide rubber waterproof material and a preparation method thereof. Background technique [0002] Polysulfide rubber is mainly a polymer compound composed of saturated carbon-hydrogen bonds and sulfur bonds. It has good heat resistance, oil resistance, hydrocarbon solvent resistance, water resistance, aging resistance, and good low temperature flexibility. electrical and adhesive properties. Polysulfide rubber is mainly divided into three categories: solid glue, liquid glue and latex. It is mainly used as waterproof material and widely used in waterproof sealing of deformation joints such as concrete expansion and settlement in construction, municipal, subway, tunnel, and water conservancy projects. The production of polysulfide rubber in foreign countries generally adopts the sodium disulfide process, and the sodium tetrasulfide process is common...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08G18/10C08G18/38C08L75/06C08L63/00C08K13/02C08K3/22C08K3/04
CPCC08G18/6633C08G18/10C08G18/4238C08L75/06C08L2205/03C08G18/3876C08L63/00C08K13/02C08K2003/2296C08K3/04
Inventor 刘春峰高萌王劭勃
Owner SHENYANG SHUNFENG NEW MATERIAL CO LTD
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