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Preparation method for calcium silicate/polyolefin composite material

A composite material, calcium silicate technology, applied in chemical instruments and methods, dyed organosilicon compound treatment, fibrous fillers, etc., can solve the problem of poor compatibility and bonding force between calcium silicate and polymer matrix, product strength It can improve the physical and chemical performance indicators, strong binding force, and improve the economic benefits of enterprises.

Inactive Publication Date: 2015-03-11
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a preparation method of calcium silicate / polyolefin composite material, which solves the complicated calcium silicate modification process, poor compatibility and binding force between calcium silicate and polymer matrix, and high After filling, the strength performance of the product decreases, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Grind the calcium silicate powder with a mill to control the average particle size to 800 mesh.

[0023] 2) After adding silane 550 coupling agent, polyethylene wax, sodium stearate and maleic anhydride to the calcium silicate powder according to 0.5%, 5% and 0.05% of the mass of the calcium silicate powder, put them in In a high-speed mixer, mix at a high speed for 30 minutes at a temperature of 80°C.

[0024] 3) Add high-density polyethylene (HD5502XA) to the calcium silicate powder at a ratio of 100 parts by mass: 100 parts by mass, and then mix at a high speed for 20 minutes at a temperature of 80-95°C.

[0025] 4) Extrude the high-speed mixed material with a twin-screw extruder to obtain calcium silicate / high-density polyethylene masterbatch.

[0026] 5) According to the calculation of adding 30 parts by mass of calcium silicate per 100 parts by mass of high-density polyethylene, mix the above-mentioned masterbatch with supplementary high-density polyethylene e...

Embodiment 2

[0030] 1) Grind the calcium silicate powder with a mill to control the average particle size to 1250 mesh.

[0031] 2) Add silane 550 and titanate mixed coupling agent, polyethylene wax and stearic acid mixed lubricant, horse After the anhydride polyethylene is grafted, it is placed in a high-speed mixer and mixed at a high speed for 40 minutes at a temperature of 90°C.

[0032] 3) Add high-density polyethylene (HD5502XA) to the calcium silicate powder at a ratio of 100 parts by mass: 100 parts by mass, and then mix at a high speed for 10 minutes at a temperature of 90-110°C.

[0033] 4) Extrude the high-speed mixed material with a twin-screw extruder to obtain calcium silicate / high-density polyethylene masterbatch.

[0034] 5) According to the calculation of adding 20 parts by mass of calcium silicate per 100 parts by mass of high-density polyethylene, mix the above-mentioned masterbatch with supplementary high-density polyethylene evenly.

[0035] 6) The mixture of the abo...

Embodiment 3

[0038] 1) Grind the calcium silicate powder with a mill to control the average particle size to 1250 mesh.

[0039] 2) Add silane 550 and titanate coupling agent, paraffin wax and stearic acid mixed lubricant, After branching polyethylene, put it in a high-speed mixer and mix at a high speed for 30 minutes at a temperature of 80°C.

[0040] 3) Add low-density polyethylene to the calcium silicate powder at a ratio of 100 parts by mass: 100 parts by mass, and mix the low-density polyethylene and calcium silicate powder at a high speed for 20 minutes at a temperature of 80-95°C.

[0041] 4) Extrude the high-speed mixed material with a twin-screw extruder to obtain calcium silicate / low-density polyethylene masterbatch.

[0042] 5) According to the calculation of adding 50 parts by mass of calcium silicate per 100 parts by mass of low-density polyethylene, mix the above-mentioned masterbatch with supplementary low-density polyethylene evenly.

[0043] 6) The mixture of the above-...

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Abstract

The invention discloses a preparation method for a calcium silicate / polyolefin composite material. The method comprises the following steps: modifying calcium silicate to obtain active calcium silicate powder, dosing the active calcium silicate powder and polyolefin resin, mixing at the high speed, granulating, and forming to prepare the calcium silicate / polyolefin composite material. The method is simple to carry out, the physical and chemical property index of the material can be improved, the production costs of enterprises can be reduced, and the economic benefits of the enterprises can be increased.

Description

technical field [0001] The invention relates to the technical field of calcium silicate used as a plastic filler, in particular to a preparation method of active calcium silicate masterbatch. Background technique [0002] Inorganic mineral powder filler is the second largest consumer raw material in the plastics industry after resin. Increasing the amount of mineral powder, saving resin raw materials, and developing plastic products with special functions and high added value are the development trends of the plastics industry. Calcium silicate product hydrothermally synthesized by using fly ash desiliconization product-sodium silicate solution has the characteristics of light weight, low density, fluffy and porous, high adsorption and large specific surface area. In the production process of using it to prepare rubber and plastic composite products, it has strong self-absorption, so that there is no smoke, no gas, and no smell in the production process, so as to achieve cle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K9/06C08K9/04C08K9/08C08K3/34C08J3/22C09C1/28C09C3/12C09C3/08C09C3/10C09C3/04
CPCC08L23/06C08J3/226C08J2323/06C08J2423/06C08K2201/003C08L23/12C08L2205/025C08L2207/062C08L2207/066C09C1/3018C09C1/3072C09C1/3081C09C1/309C09C3/006C09C3/041C09C3/10C09C3/12C08K9/06C08K9/04C08K9/08C08K3/34
Inventor 伍泽广
Owner HUNAN UNIV OF SCI & TECH
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