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Preparation method of kieselguhr-PVC composite material

A technology of composite materials and diatomite, which is applied in the field of modified plastics, can solve the problem of less application of modified plastics, and achieve the effects of good impact resistance, good strength and toughness, and strong light transmittance

Inactive Publication Date: 2015-09-30
SUZHOU RONGCHANG COMPOUND MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, diatomite has been widely used in technical fields such as coatings and pesticides, but it is rarely used in the technical field of modified plastics.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Grind diatomite and pass through a 500-600 mesh sieve to obtain diatomite powder; add 50g of diatomite powder to 500ml of distilled water, and add isopropyl tris(dioctylpyrophosphate acyloxy)titanium to it 15g of acid ester was reacted at 25°C for 12h and dried to obtain modified diatomite powder.

[0020] Weigh the following materials by weight: 80 parts of polyvinyl chloride resin, 10 parts of modified diatomite powder, 1 part of nano-zinc oxide, 1 part of polybutylene terephthalate, 0.02 part of oxidized polyethylene wax, HA -50 and PA-21 with a mass ratio of 1:3.5, 3 parts of the mixture, 0.5 parts of lead stearate, and 0.5 parts of boron nitride, mixed evenly, and added to the twin-screw extruder, the temperature of the first zone was 165 ° C, the second The temperature in zone 180°C, the temperature in zone 3 is 190°C, the temperature in zone 4 is 195°C, the temperature in zone 5 is 210°C, the temperature in zone 6 is 205°C, the temperature in zone 7 is 210°C, the...

Embodiment 2

[0022] Grind diatomite and pass through a 500-mesh sieve to obtain diatomite powder; add 50g of diatomite powder to 500ml of distilled water, and add isopropyl tris (dioctyl pyrophosphate acyloxy) titanate to it 15g, reacted at 25°C for 15h, and dried to obtain modified diatomite powder.

[0023] Weigh the following materials by weight: 100 parts of polyvinyl chloride resin, 15 parts of modified diatomite powder, 2 parts of nano zinc oxide, 3 parts of polybutylene terephthalate, 0.05 part of oxidized polyethylene wax, HA -50 and PA-21 with a mass ratio of 1:3.5, 5 parts of the mixture, 0.8 parts of lead stearate, and 1 part of boron nitride, mixed evenly, and added to the twin-screw extruder. The temperature in zone 180°C, the temperature in zone 3 is 190°C, the temperature in zone 4 is 195°C, the temperature in zone 5 is 210°C, the temperature in zone 6 is 205°C, the temperature in zone 7 is 210°C, the temperature in zone 8 is 230°C, the main engine speed The temperature is ...

Embodiment 3

[0025] Grind diatomite and pass through a 600-mesh sieve to obtain diatomite powder; add 50 g of diatomite powder to 500 ml of distilled water, and add 15 g of bis(dioctyloxypyrophosphate) ethylene titanate to it , reacted at 25°C for 12h, and dried to obtain modified diatomite powder.

[0026] Weigh the following materials by weight: 120 parts of polyvinyl chloride resin, 25 parts of modified diatomite powder, 3 parts of zinc oxide, 5 parts of polybutylene terephthalate, 0.1 part of oxidized polyethylene wax, HA- 50 and PA-21 with a mass ratio of 1:3.5, 3 parts of the mixture, 1 part of lead stearate, and 2 parts of boron nitride, mixed evenly, and added to the twin-screw extruder. The temperature is 180°C, the temperature in the third zone is 190°C, the temperature in the fourth zone is 195°C, the temperature in the fifth zone is 210°C, the temperature in the sixth zone is 205°C, the temperature in the seventh zone is 210°C, and the temperature in the eighth zone is 230°C. ...

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PUM

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Abstract

The invention discloses a preparation method of a kieselguhr-PVC composite material. The method is characterized by comprising the following steps: (1), grinding kieselguhr, enabling ground kieselguhr to pass through a 500-600-mesh sieve, so as to obtain kieselguhr powder; (2), adding the kieselguhr powder obtained in the step (1) into water, adding a titanate coupling agent into the water, stirring for reaction for 10-15 h at the room temperature, drying and grinding, so as to obtain modified kieselguhr powder; (3), weighing the following components according to weight ratio: polyvinyl chloride resin, the modified kieselguhr powder obtained in the step (2), zinc oxide, polybutylene terephthalate, oxidized polyethylene wax, an ACR processing agent, lead stearate and boron nitride, uniformly mixing, and adding the mixture into a double-screw extruder to be granulated, so as to obtain the kieselguhr-PVC composite material. The kieselguhr-PVC composite material prepared by the invention has better impact resistance, higher light transmittance, and good obdurability.

Description

technical field [0001] The invention belongs to the technical field of modified plastics, and in particular relates to a preparation method of a diatomite-PVC composite material. Background technique [0002] Polyvinyl chloride has good mechanical properties, electrical properties, corrosion resistance and flame retardancy, low price, and a wide range of raw materials, but PVC products have disadvantages such as high brittleness, poor thermal stability and flow properties in processing and medical use, which limits the material usage of. The modification of PVC can improve the toughness, stiffness and strength of PVC, and improve its thermal stability, dimensional stability and aging resistance. At present, the use of inorganic mineral powders to prepare PVC composite materials has become a hot spot for PVC modification and processing. [0003] The chemical composition of diatomaceous earth is mainly silicon dioxide, and a small amount of ferric oxide, aluminum oxide, ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L67/02C08K13/06C08K9/04C08K3/34C08K3/22C08K5/098C08K3/38B29C47/92B29C48/92
CPCC08L27/06B29C48/92B29C2948/92704C08K2201/011C08L2205/035C08L67/02C08L23/30C08L33/04C08K13/06C08K9/04C08K3/34C08K2003/2296C08K5/098C08K2003/385
Inventor 资于明朱正华黄仁军
Owner SUZHOU RONGCHANG COMPOUND MATERIAL
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