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Diatomite and kaolin thermal-insulation film master batch and preparation method thereof

A technology of diatomite and kaolin, applied in the field of composite material master batch and its preparation, can solve the problems of high cost, complicated process, complicated master batch production process, etc., and achieve the effects of improving thermal insulation and anti-aging performance.

Active Publication Date: 2015-07-01
YINGKOU XIAOJIAZU IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The Chinese patent application with the application number 2013102374334 discloses a nanometer self-assembled heat-insulating agricultural film. In this application, indium-doped tin oxide and anthium-doped tin oxide are used to achieve the effect of blocking infrared rays, but the process is complicated and the cost is high; application number The Chinese patent application 2010800375252 discloses a kind of "hydrotalcite-type particle powder, thermal insulation agent for agricultural film, masterbatch for agricultural film and agricultural film". Hydrotalcite particles are then coated with high-grade fatty acids to make insulating agent particles, and then added to polyethylene resin to make powder masterbatch to produce agricultural mulch film. Hydrotalcite needs special treatment, and the masterbatch production process is complicated.

Method used

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  • Diatomite and kaolin thermal-insulation film master batch and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Prepare the following raw materials according to mass percentage, diatomite 22%, kaolin 33%, polyethylene 35%, aluminate coupling agent 3%, stearic acid 0.8%, calcium stearate 0.5%, paraffin wax 3%, PE wax 2%, antioxidant 0.7%. Among them: self-produced diatomite, SiO2 content of 85%, bulk density of 0.45g / ml, specific surface area of ​​25m 2 / g, the particle size is 1250 mesh; the kaolin is self-produced, the whiteness is 91, SiO 2 The content is 45%, Al 2 o 3 The content is 35%, the water content is 0.1%, and the particle size is 1250 mesh; the grade of polyethylene is DNDA8320, produced by Fushun Petrochemical Company; the grade of aluminate coupling agent is DL-411-A, manufactured by Nanjing Pinning Coupling Agent Co., Ltd.; the grade of stearic acid is 1801, produced by Wujiang Xinchang Fine Chemical Co., Ltd.; the model of calcium stearate is C50, produced by Shijiazhuang Desu Auxiliary Co., Ltd.; the grade of paraffin wax is 58#, produced by Fushun Petrochemic...

Embodiment 2

[0037] Prepare the following raw materials according to mass percentage, diatomite 23%, kaolin 33%, polyethylene 34%, aluminate coupling agent 3%, stearic acid 0.8%, calcium stearate 0.4%, paraffin wax 3%, PE wax 2%, antioxidant 0.8%. Among them: self-produced diatomite, SiO2 content of 86%, bulk density of 0.5g / ml, specific surface area of ​​30m 2 / g, the particle size is 1300 mesh; the kaolin is self-produced, the whiteness is 92, SiO 2 The content is 46%, Al 2 o 3 The content is 36%, the water content is 0.1%, and the particle size is 1300 mesh; the grade of polyethylene is DNDA8320, produced by Fushun Petrochemical Company. Other components and mixing, extrusion and mechanical property testing methods are the same as in Example 1.

[0038] The masterbatch is approximately cylindrical particles with a length of 10mm, and there are about 500 particles per 10g of masterbatch.

[0039] Table 3 is the technical index of diatomite and kaolin film insulation masterbatch of t...

Embodiment 3

[0046] Prepare the following raw materials according to mass percentage, diatomite 24%, kaolin 33%, polyethylene 34%, aluminate coupling agent 3%, stearic acid 0.5%, calcium stearate 0.5%, paraffin 3%, PE wax 1.5%, antioxidant 0.5%. Among them: self-produced diatomite, SiO2 content is 86%, bulk density is 0.55g / ml, specific surface area is 35m 2 / g, the particle size is 1400 mesh; the kaolin is self-produced, the whiteness is 92, SiO 2 The content is 47%, Al 2 o 3 The content is 36%, the water content is 0.1%, and the particle size is 1400 mesh; the grade of polyethylene is 0474, which is produced by Qatar Petrochemical Company. Other components and mixing, extrusion and mechanical property testing methods are the same as in Example 1.

[0047] The masterbatch is approximately cylindrical particles with a length of 6mm, and there are about 550 particles per 10g of masterbatch.

[0048] Table 5 is the technical index of the diatomite and kaolin film insulation masterbatch ...

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Abstract

The invention discloses diatomite and kaolin thermal-insulation film master batch and a preparation method thereof. The diatomite and kaolin thermal-insulation film master batch comprises the following components in percentage by mass: 22%-26% of diatomite, 30%-34% of kaolin, 32%-35% of polyethylene, 2%-3% of an aluminate coupling agent, 0.5%-0.8% of stearic acid, 0.3%-0.5% of calaium strarate, 2%-3% of paraffin, 1%-2% of PE (polyethylene) wax and 0.5%-0.8% of an antioxidant. The raw materials are mixed in a high-speed mixer in stages and then are extruded by a same-direction parallel twin-screw extruder to prepare the master batch. According to the diatomite and kaolin thermal-insulation film master batch and the preparation method thereof disclosed by the invention, the diatomite, the kaolin and the polyethylene are mixed and modified, the adding proportion of the diatomite to the kaolin is controlled to be 52%-60% to prepare master batch, the infrared-ray transmission rate of mulching film prepared by 5%-15% of the match batch can be reduced by 31%-34%, and the thermal insulation effects are obvious.

Description

technical field [0001] The invention relates to a composite material masterbatch and a preparation method thereof, in particular to a diatomite and kaolin polyethylene thermal insulation film masterbatch and a preparation method thereof. Background technique [0002] Since the late 1970s, plastic film mulching cultivation technology has been widely used. Traditional plastic film generally focuses on mechanical strength, impact resistance, aging resistance, and light transmission and temperature increase to meet the requirements and purposes of use. In recent years, with the strengthening of green, environmental protection and low-carbon awareness, more and more attention has been paid to the thermal insulation of plastic film. After the crops are covered with plastic film, the ground temperature will be raised by sunlight during the day, absorbing heat and avoiding heat dissipation and cooling caused by air flow and convection, so that the ground temperature can be raised by...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L91/06C08K13/06C08K9/04C08K3/36C08K3/22C08K5/09C08K5/098B29C47/92B29C48/92
CPCB29C48/92B29C2948/92209C08K2201/006C08L23/06C08L2203/16C08L2205/025C08L2205/03C08L91/06C08K13/06C08K9/04C08K3/36C08K2003/2227C08K5/09C08K5/098
Inventor 李智武文起东文博郝天禹李姝谊
Owner YINGKOU XIAOJIAZU IND
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