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Novel gypsum retarder and preparation method thereof

A gypsum retarder and a new technology are applied in the field of new gypsum retarder and its preparation, which can solve problems such as nitrogen oxide emission, achieve the effects of low cost, realize resource utilization, and solve disposal problems

Active Publication Date: 2012-10-03
邯郸市潘仁新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former has food safety issues of antibiotic residues, while the latter has environmental issues of nitrogen oxide emissions

Method used

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  • Novel gypsum retarder and preparation method thereof
  • Novel gypsum retarder and preparation method thereof
  • Novel gypsum retarder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 150 parts of penicillin mycelium powder, 0.25 part of disodium hydrogen phosphate, 0.38 part of sodium hydroxide, 0.07 part of polydimethylsiloxane and 350 parts of water into the reactor to modify the penicillin mycelium, The modification temperature was 40°C and the modification time was 5 hours to obtain a mixture; after the modification was completed, 11 parts of alkaline calcium-based bentonite, 0.04 parts of potassium sorbate and 0.01 part of β-phenylethanol were added to the mixture, and after mixing evenly, the A new type of gypsum retarder in the form of solid powder is made by spray drying.

[0019] The retarder prepared in this example was added to 100 parts of building gypsum, and the water-to-material ratio was 0.65, and the setting time and strength performance tests were carried out. At the same time, building gypsum without adding retarder was used as a comparison.

[0020]

Embodiment 2

[0022] Add 165 parts of penicillin mycelium powder, 0.30 part of disodium hydrogen phosphate, 0.45 part of sodium hydroxide, 0.06 part of polydimethylsiloxane and 410 parts of water into the reactor to modify the penicillin mycelium, The modification temperature was 50°C and the modification time was 3 hours to obtain a mixture; after the modification was completed, 15 parts of alkaline calcium-based bentonite, 0.05 parts of potassium sorbate and 0.02 parts of β-phenylethanol were added to the mixture, and after mixing evenly, the A new type of gypsum retarder in the form of solid powder is made by spray drying.

[0023] The retarder prepared in this example was added to 100 parts of building gypsum, and the water-to-material ratio was 0.65, and the setting time and strength performance tests were carried out. At the same time, building gypsum without adding retarder was used as a comparison.

[0024]

Embodiment 3

[0026] Add 180 parts of penicillin mycelium powder, 0.4 part of disodium hydrogen phosphate, 0.6 part of sodium hydroxide, 0.05 part of polydimethylsiloxane and 440 parts of water into the reactor to modify the penicillin mycelium, The modification temperature was 45°C, and the modification time was 4 hours to obtain a mixture; after modification, 18 parts of alkaline calcium-based bentonite, 0.06 parts of potassium sorbate and 0.03 parts of β-phenylethanol were added to the mixture, and after mixing evenly, the A new type of gypsum retarder in the form of solid powder is made by spray drying.

[0027] The retarder prepared in this example was added to 100 parts of building gypsum, and the water-to-material ratio was 0.65, and the setting time and strength performance tests were carried out. At the same time, building gypsum without adding retarder was used as a comparison.

[0028]

[0029] It can be seen from the above three examples that the novel gypsum retarder prepare...

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Abstract

The invention relates to a novel gypsum retarder and a preparation method thereof. The novel gypsum retarder consists of the following components in parts by weight: 150-180 parts of penicillin mycelium, 0.2-0.4 part of disodium hydrogen phosphate, 0.3-0.6 part of sodium hydroxide, 0.05-0.08 part of polydimethylsiloxane, 0.04-0.06 part of potassium sorbate, 10-20 parts of alkaline calcium bentonite, 0.01-0.03 part of beta-phenethyl alcohol and 350-450 parts of water. Modification condition: modification is performed at the temperature of 40-50 DEG C for 3-5 hours; and a modified material is prepared into a solid gypsum retarder by spray drying. The retarder has the characteristics of low cost, good retarding effect and small strength loss.

Description

technical field [0001] The invention relates to a novel gypsum retarder and a preparation method thereof, which are used in the production of gypsum building materials. Background technique [0002] Gypsum is an ancient building material, which belongs to one of the three traditional inorganic cementitious materials. It is mostly used for plastering plaster, plastering gypsum, gypsum mortar, gypsum wallboard, ceiling, decorative sound-absorbing board, gypsum block and other decorative parts. Wait. Gypsum materials and gypsum products mainly have the characteristics of low production energy consumption, good thermal insulation and energy saving benefits, heat and sound insulation performance, small shrinkage, and fire resistance. They have become energy-saving green materials that are respected and developed internationally. [0003] The setting and hardening speed of building gypsum is very fast, the setting time is only a few minutes to ten minutes, and it will lose its fl...

Claims

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Application Information

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IPC IPC(8): C04B24/42C04B24/00C04B22/16C04B103/22
Inventor 赵风清张志国穆琰习庆凯陈倩曹素改付应利李佩欣梁雪松
Owner 邯郸市潘仁新能源科技有限公司
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