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PVC composite material suitable for extrusion molding and preparation method

A technology for extrusion molding and PVC resin powder, which is applied in the field of PVC composite materials and preparation, can solve the problems of poor toughness, poor fluidity, and easy decomposition of molded products, and achieve the effects of not easy to decompose, good compatibility, and good toughness.

Inactive Publication Date: 2018-06-01
SHAANXI SCI TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the molding process, the fluidity of the two is poor, high temperature PVC is easy to decompose, and the toughness of the molded products is poor.
At the same time, there is a serious dust problem in the extrusion molding process of PVC

Method used

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  • PVC composite material suitable for extrusion molding and preparation method
  • PVC composite material suitable for extrusion molding and preparation method
  • PVC composite material suitable for extrusion molding and preparation method

Examples

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preparation example Construction

[0025] The PVC composite material suitable for extrusion molding of the present invention and preparation method comprise the following steps:

[0026] 1) Preparation of modified waste mineral powder

[0027] 1a) After extracting the magnet powder from the tailings generated by mining granite through the magnet powder production line, the waste mineral powder a is obtained through drying, crushing, grinding and sieving; Mineral powder b; waste ore powder c is obtained by grinding and sieving the coal-burning fly ash produced in the smelting process; the grinding fineness is 300-400 mesh;

[0028] 1b) Mix waste mineral powder a, waste mineral powder b, and waste mineral powder c at a low speed in any proportion to obtain waste mineral powder d, and then mix waste mineral powder d with 56.5-68.5% of waste mineral powder and 1.5-3.5% aluminate Ester coupling agent (distearyloxy isopropyl aluminate) at 70-90°C, 500-1000 rpm, stirring and mixing for 30-60min, cooling to 30-40°C to...

Embodiment 1

[0036] Prepare PVC composite materials according to the following raw materials:

[0037]

[0038]

[0039] Specific implementation steps:

[0040] 1) Grind waste mineral powder a, waste mineral powder b and waste mineral powder c to a fineness of 300 mesh; mix at a low speed according to the ratio of 1:1:1 to obtain 56.5 parts of waste mineral powder d, and then couple with 3.5 parts of aluminate Agent distearoyloxyisopropyl aluminate, under the condition of 80°C, stir and mix at 800 rpm for 30min, cool to 40°C, stop stirring to obtain modified waste mineral powder.

[0041] 2) Mix the modified waste mineral powder with 1 part of stearic acid and 2 parts of paraffin wax respectively, raise the temperature to 100°C, stir vigorously for 1 hour, cool to 40°C, stop stirring to obtain the modified waste mineral powder premix.

[0042] 3) Mix the modified waste mineral powder premix with 25 parts of PVC resin powder, 6 parts of PVC calcium-zinc composite stabilizer, 3 parts ...

Embodiment 2

[0044] Prepare PVC composite materials according to the following raw materials:

[0045]

[0046]

[0047] Specific implementation steps:

[0048] 1) Grind waste mineral powder a, waste mineral powder b and waste mineral powder c to a fineness of 300 mesh; mix at a low speed according to the ratio of 1:1:1 to obtain 58.5 parts of waste mineral powder d, and then couple with 1.5 parts of aluminate agent, under the condition of 80°C, stir and mix at 800 rpm for 30min, cool to 40°C, stop stirring to obtain modified waste mineral powder.

[0049] 2) Mix the modified waste mineral powder with 1 part of paraffin respectively, raise the temperature to 100°C, stir for 1 hour with strong mechanical force, cool to 40°C, stop stirring to obtain the modified waste mineral powder premix.

[0050] 3) Mix the modified waste mineral powder premix with 20 parts of PVC resin powder, 3 parts of PVC calcium-zinc composite stabilizer, 3 parts of ACR toughening agent and 3 parts of CPE, hea...

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Abstract

The invention relates to a PVC composite material suitable for extrusion molding and a preparation method. The preparation method comprises preparation of modified waste mineral powder, preparation ofa modified waste mineral powder premix and preparation of the PVC composite material. The modified waste mineral powder is obtained by performing grinding, screening and coupling activation treatmenton mixed waste mineral slag comprising tailings produced in mining of granites, wastes produced in marble processing and fired-coal coal ash produced in a smelting process; the modified waste mineralpowder premix is obtained by mixing the modified waste mineral powder with stearic acid and paraffin respectively; the PVC composite material is obtained by mixing the modified waste mineral powder premix with PVC resin, a composite stabilizer, a toughener and CPE under a heating condition. The composite material is suitable for extrusion molding, uniform in PVC plasticization and hard to decompose; the waste mineral powder is high in compatibility with PVC; no dust problem is caused; the defective rate is low; furthermore, a molded product is high in intensity, high in toughness and good inwater resistance and flame retardancy. The PVC composite material can replace a wood-plastic composite material and be widely applied to the field of buildings and home decoration.

Description

technical field [0001] The invention belongs to the field of plastic formulations, in particular to a PVC composite material suitable for extrusion molding and a preparation method. Background technique [0002] According to the requirements of the Ministry of Industry and Information Technology [2016] No. 225 document, focusing on high-value, large-scale and intensive utilization, focusing on tailings, waste rock, coal gangue, fly ash, smelting slag, metallurgical dust, red mud, industrial Industrial solid waste such as by-product gypsum and chemical waste slag, promoting a batch of advanced and applicable technical equipment, and promoting in-depth resource utilization are important ways to achieve industrial green development in the next five years. For Hanzhong City, Shaanxi Province, which is located in the Qinba area, it has rich mineral resources and many smelting enterprises. During the process of mineral development and smelting, and stone processing, a large amount...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/28C08L91/06C08L23/08C08K13/08C08K13/06C08K11/00C08K9/04C08K5/09C08K5/098
CPCC08L27/06C08K2201/014C08L2201/02C08L2205/035C08L23/286C08L91/06C08L23/0853C08K13/08C08K13/06C08K11/005C08K9/04C08K5/09C08K5/098
Inventor 袁新强曾晨艾桃桃刘林森蒋鹏张建华
Owner SHAANXI SCI TECH UNIV
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