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Heavy calcium carbonate composite packing as well as preparation method and application thereof

A technology of heavy calcium carbonate and composite filler, which is applied in fibrous filler, dyed organic silicon compound treatment, dyed low-molecular organic compound treatment, etc., which can solve the problems of PVC material mechanical performance decline and product cost increase

Active Publication Date: 2012-10-24
SICHUAN SHIMIAN JUFENG POWDER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of inorganic flame retardant added to 100 parts of resin must reach more than 100 parts to achieve V-0 flame retardancy. Such a large addition will easily cause a significant decrease in the mechanical properties of PVC materials and a substantial increase in product costs.
[0004] The inventor aims at the shortcomings of the existing flame-retardant and smoke-suppressing properties of plastic products, especially PVC plastic products, and the deficiency of the flame-retardant and smoke-suppressing functions of the current heavy calcium carbonate-filled plastic products, and provides a brand-new flame-retardant and smoke-suppressing product. Functional composite filler containing heavy calcium carbonate, ultrafine active magnesium hydroxide, ultrafine porous silica and other components

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] ①The particle size distribution d 97 =20μm heavy calcium carbonate at 100±10°C, add 1.0% stearic acid of the mass of heavy calcium carbonate, and use SLG-600 continuous powder surface modification machine for surface modification; ②The particle size distribution d 97 =6μm ultrafine Mg(OH) 2 At 100±10℃, add ultra-fine Mg(OH) 2 The 1.5% vinyl silane of mass, carry out surface modification with SLG-600 type continuous powder surface modification machine; ) 2 30kg, ultrafine porous silica 5kg, and ultrafine antimony oxide 3kg are stirred and compounded in a mixer. After stirring evenly, it is a heavy calcium carbonate composite filler with flame retardant function. The performance of filling PVC cable materials is listed in Table 1.

Embodiment 2

[0029] ①The particle size distribution d 97 =20μm heavy calcium carbonate at 100±10°C, add 0.4% aluminate and 0.6% stearic acid to the mass of heavy calcium carbonate, and use SLG-600 continuous powder surface modification machine for surface modification ② the particle size distribution d 97 =6μm ultrafine Mg(OH) 2 At 100±10℃, add ultra-fine Mg(OH) 2 The aminosilane of 1.0% and the stearic acid of 0.6% of quality, carry out surface modification with SLG-600 type continuous powder surface modification machine; Ultrafine Mg(OH) 2 30kg, ultrafine porous silica 5kg, and ultrafine antimony oxide 3kg are stirred and compounded in a mixer. After stirring evenly, it is a heavy calcium carbonate composite filler with flame retardant function. The performance of filling PVC cable materials is listed in Table 1.

Embodiment 3

[0031] ①The particle size distribution d 97=20μm heavy calcium carbonate at 100±10°C, add 0.4% titanate and 0.6% stearic acid of heavy calcium carbonate mass, and use SLG-600 continuous powder surface modification machine for surface modification ② the particle size distribution d 97 =6μm ultrafine Mg(OH) 2 At 100±10℃, add ultra-fine Mg(OH) 2 0.8% aminosilane and 0.8% aluminate by mass, and use SLG-600 type continuous powder surface modification machine to carry out surface modification; ③ Take 60kg of active ground calcium carbonate after surface modification, after surface modification Ultrafine Mg(OH) 2 32kg, ultra-fine porous silica 5kg, and ultra-fine antimony oxide 3kg are stirred and compounded in a mixer. After stirring evenly, it is a heavy calcium carbonate composite filler with flame-retardant function. The performance of filling PVC cable materials is listed in Table 1.

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PUM

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Abstract

The invention belongs to the field of mineral processing and nonmetallic mineral materials, and in particular relates to a heavy calcium carbonate composite packing as well as a preparation method and application thereof. The heavy calcium carbonate composite packing has the flame-retardant and / or smoke suppression function, and comprises the following components according to weight ratio: 50-75 parts of heavy calcium carbonate, 20-40 parts of ultrafine magnesium hydroxide, 1-8 parts of superfine porous silicon dioxide and 1-8 parts of superfine antimony oxide, wherein the particle diameter of heavy calcium carbonate is 7-45mu m; the particle diameter of ultrafine magnesium hydroxide is 2-10 mu m; the median particle diameter d50 of superfine porous silicon dioxide is not larger than 5mu m; the median particle diameter d50 of the superfine antimony oxide is not larger than 1 mu m; and heavy calcium carbonate and ultrafine magnesium hydroxide are applied after surface modification. The main technical performance indexes of the composite packing are as follows: oil absorption rate is less than 0.5ml / g; the activation index is no less than 96%; and the flame retardance level is V-0, the oxygen index is no less than 30, and smoke is less.

Description

technical field [0001] The invention belongs to the field of mineral processing and non-metallic mineral materials, and in particular relates to heavy calcium carbonate composite filler and its preparation method and application. Background technique [0002] At present, polymer-based materials such as plastics and rubbers are used more and more widely. However, this kind of material has a low ignition point and is easy to catch fire. Although strict fire prevention measures are taken in construction, transportation, wire and cable and electrical equipment and other applications, thousands of fires still occur every year, causing a large number of lives and property loss. In order to reduce fires caused by the use of these materials, flame retardants are added to the manufacture of these materials. At present, flame retardants can be divided into two categories: organic and inorganic. Organic flame retardants are a type of organic halogen flame retardants containing chlori...

Claims

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Application Information

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IPC IPC(8): C08K13/06C08K9/04C08K9/06C08K3/26C08K3/22C08K7/26C09C1/02C09C3/08C09C3/12C08L27/06C08J3/22
Inventor 郑水林黄云华李龙山杨信强陈绍清
Owner SICHUAN SHIMIAN JUFENG POWDER
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