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Polystyrene-calcium silicate thermal insulation mortar containing papermaking sludge and preparation method thereof

A technology for papermaking sludge and polystyrene, which is applied in the field of building materials to achieve uniform and defect-free products, improve thermal insulation performance and mechanical performance, and reduce water absorption.

Active Publication Date: 2017-06-30
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the existing problems, the present invention provides a polystyrene-calcium silicate thermal insulation mortar containing papermaking sludge and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 Preparation of calcium silicate granules containing papermaking lime mud.

[0030] (1) Weigh each raw material according to 30 parts of Portland cement, 40 parts of quartz sand, 3 parts of alkali recovery papermaking lime mud, 10 parts of wood pulp fiber, and 10 parts of water, heat the raw materials in microwave and stir them evenly, the stirring speed is 50r / min, temperature 140°C, time 3h, microwave heater power 400W, frequency 2450MHz;

[0031] (2) Microwave drying the product obtained in step (1) at 70°C for 4 hours, the power of the microwave heater is 600W, and the frequency is 2450MHz;

[0032] (3) Grinding the product obtained in step (2) to an average particle size of 200 μm to obtain calcium silicate particles containing papermaking white mud.

Embodiment 2

[0033] Example 2 Preparation of calcium silicate granules containing papermaking lime mud.

[0034] (1) Weigh each raw material according to 40 parts of Portland cement, 35 parts of quartz sand, 10 parts of alkali recovery papermaking lime mud, 6 parts of wood pulp fiber, and 15 parts of water, heat the raw materials in microwave and stir them evenly, the stirring speed is 40r / min, temperature 150°C, time 3h, microwave heater power 500W, frequency 2450MHz;

[0035] (2) Microwave drying the product obtained in step (1) at 80° C. for 5 h, the power of the microwave heater is 500 W, and the frequency is 2450 MHz;

[0036] (3) Grinding the product obtained in step (2) to an average particle size of 50 μm to obtain calcium silicate particles containing papermaking white mud.

Embodiment 3

[0037] Example 3 Preparation of calcium silicate granules containing papermaking lime mud.

[0038] (1) Weigh each raw material according to 50 parts of Portland cement, 30 parts of quartz sand, 15 parts of alkali recovery papermaking lime mud, 2 parts of wood pulp fiber, and 20 parts of water, heat the raw materials in microwave and stir evenly, the stirring speed is 40r / min, temperature 150°C, time 3.5h, microwave heater power 600W, frequency 2450MHz;

[0039] (2) Microwave drying the product obtained in step (1) at 60° C. for 6 h, the power of the microwave heater is 400 W, and the frequency is 2450 MHz;

[0040] (3) Grinding the product obtained in step (2) to an average particle size of 10 μm to obtain calcium silicate particles containing papermaking white mud.

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Abstract

The invention relates to a polystyrene-calcium silicate thermal insulation mortar containing papermaking sludge and a preparation method thereof. The polystyrene-calcium silicate thermal insulation mortar containing the papermaking sludge comprises the following raw materials in parts by weight: 100 parts of sulphoaluminate cement, 20-50 parts of calcium silicate particles containing papermaking white mud, 3-5 parts of polystyrene particles, 5-20 parts of ink papermaking sludge, 5-20 parts of ecological papermaking sludge, 5-20 parts of alkali recovered papermaking white mud, 0.4-0.6 part of cellulose ether, 0.2-0.4 part of an air entraining agent, 0.5-0.7 part of a polycarboxylic acid water reducing agent, and 40-80 parts of water. The polystyrene-calcium silicate thermal insulation mortar is prepared by the following method: mixing evenly the alkali recovered papermaking white mud, the sulphoaluminate cement, the cellulose ether and the air entraining agent to obtain a mixed powder; adding water to the ink papermaking sludge, the ecological papermaking sludge and the polycarboxylic acid water reducing agent, and stirring evenly to form a mixed liquid; adding the mixed powder into the mixed liquid, stirring, adding the calcium silicate particles having the amount 50% that of the total amount of the calcium silicate particles, then adding polystyrene particles, stirring, finally adding the remaining calcium silicate particles, stirring evenly, and molding and curing to obtain the thermal insulation mortar.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a polystyrene-calcium silicate thermal insulation mortar containing papermaking sludge and a preparation method thereof. Background technique [0002] Insulation mortar is a kind of ready-mixed dry powder mortar made of various light materials as aggregate, cement as cement, mixed with some modified additives, and mixed by mixing. It is used to construct the insulation layer of building surface. A building material. Polystyrene (EPS) and vitrified microbeads (heat-resistant aggregate) are used as lightweight aggregates, sulphoaluminate cement is used as cementitious material, and some modifiers are added to prepare thermal insulation mortar. It has excellent thermal performance and thermal insulation performance, and has been commercially applied. However, vitrified microbeads are porous materials, which can easily cause high water absorption, poor mechanical prope...

Claims

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Application Information

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IPC IPC(8): C04B28/06
CPCC04B28/06C04B2111/00017C04B14/043C04B16/08C04B18/0418C04B24/383C04B2103/302C04B2103/304
Inventor 王守德陈明旭芦令超赵丕琪宮晨琛
Owner UNIV OF JINAN
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