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Polyvinyl chloride/modified nut shell powder composite material and preparation method thereof

A technology of nut shell powder and polyvinyl chloride is applied in the field of composite materials to achieve the effects of reducing weight and production cost, improving impact resistance and stability, and simple preparation process

Inactive Publication Date: 2014-03-12
云南鑫乾矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But how to increase the proportion of nut shell powder in the plastic matrix, how to make the compatibility of nut shell powder and plastic matrix very good, and how to make full use of the characteristics of nut shell strength and good wear resistance to make the reinforcement of composite materials The mechanical properties such as toughening and toughening are relatively ideal, and these technical problems have not yet achieved substantial breakthroughs.

Method used

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  • Polyvinyl chloride/modified nut shell powder composite material and preparation method thereof
  • Polyvinyl chloride/modified nut shell powder composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment l

[0019] A polyvinyl chloride / modified nut shell powder composite material is made from the raw materials in the polyvinyl chloride / nut shell powder composite material formula (parts by weight) in Table 1, and its preparation method comprises the following steps:

[0020] (1) Raw material pretreatment: grind the walnut shells into fine powder with an agricultural grinder, and then grind them into 220-mesh fine powder with a high-speed rotor mill, and take walnut shell powder and surface modifier in specified parts by weight according to the formula in Table 1 , preheating and drying the walnut shell powder at 100°C for 2.5 hours until the water content is ≤0.3%, diluting the surface modifier with petroleum ether at 70°C to prepare a 10wt% solution;

[0021] (2) Modification of nut shell powder: In a high-speed mixer, add the dilution of the surface modifier to the walnut shell powder, and stir at high speed for 15 minutes to obtain the modified walnut shell powder;

[0022] (3) ...

Embodiment 2

[0024] A polyvinyl chloride / modified nut shell powder composite material is made from the raw materials in the polyvinyl chloride / nut shell powder composite material formula (parts by weight) in Table 1, and its preparation method comprises the following steps:

[0025] (1) Raw material pretreatment: After the walnut shell is ground into fine powder with an agricultural grinder, it is then ground into a 260-mesh fine powder with a high-speed rotor mill, and walnut shell powder and surface modification are taken according to the formula in Table 1. The walnut shell powder was preheated and dried at 110°C for 3.5 hours until the moisture content was ≤0.3%, and the surface modifier was diluted with 80°C petroleum ether to prepare a 14wt% solution;

[0026] (2) Modification of nut shell powder: In a high-speed mixer, the surface modifier dilution was added to the walnut shell powder, and stirred at high speed for 30 minutes to obtain modified walnut shell powder;

[0027] (3) Knea...

Embodiment 3

[0029] A polyvinyl chloride / modified nut shell powder composite material is made from the raw materials in the polyvinyl chloride / nut shell powder composite material formula (parts by weight) in Table 1, and its preparation method comprises the following steps:

[0030] (1) Raw material pretreatment: After walnut shells are ground into fine powder with an agricultural pulverizer, they are then ground into 320-mesh fine powder with a high-speed rotor mill, and walnut shell powder and surface modification are taken according to the formula in Table 1 agent, the walnut shell powder was preheated and dried at 100°C for 3 hours, and dried to a moisture content of ≤0.3%, and the surface modifier was diluted with 80°C petroleum ether to prepare a 12wt% solution;

[0031] (2) Modification of nut shell powder: In a high-speed mixer, the surface modifier dilution was added to the walnut shell powder, and stirred at high speed for 20 minutes to obtain modified walnut shell powder;

[003...

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Abstract

The invention relates to a polyvinyl chloride / modified nut shell powder composite material and a preparation method thereof, belonging to the technical field of composite materials. According to the invention, the polyvinyl chloride / modified nut shell powder composite material is obtained by the following raw materials in parts by weight: 100 parts of polyvinyl chloride with polymerization degree of 2000-3000, 150-250 parts of nut shell powder, 2-7 parts of surface modifier, 6-10 parts of polymer modifier, 4-8 parts of heat stabilizer and 3-6 parts of lubricant; and the preparation method of the polyvinyl chloride / modified nut shell powder composite material comprises the following steps of: (1) raw material pretreatment; (2) nut shell powder modification; and (3) kneading and material preparation. The polyvinyl chloride / modified nut shell powder composite material provided by the invention can be used for filling a large quantity of modified nut shell powders and has the advantages of higher filling degree, good compatibility with plastics as well as better mechanical performances, such as reinforcement performance, toughening performance and so on.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a polyvinyl chloride / modified nut shell powder composite material and a preparation method thereof. Background technique [0002] Nuts are also called dried fruits and shelled fruits. This kind of fruit is surrounded by a hard shell. The nut shell has the characteristics of light weight, good dimensional stability, high strength and good wear resistance. Generally, nut foods are divided into two subcategories: one is tree nuts, including walnuts, almonds, hazelnuts, cashews, pine nuts, chestnuts, ginkgo (gingko), pistachios, macadamia nuts and other economic forest species; the other is seeds, Including peanuts, sunflower seeds, pumpkin seeds, watermelon seeds and so on. Almonds, hazelnuts, walnuts and cashews are known as the world's four largest nuts, and their production ranks among the top in the world. Taking walnut shells as an example, my country ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L51/00C08L23/28C08L97/02C08K5/00B29B7/00
Inventor 施如贵
Owner 云南鑫乾矿业有限公司
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