CN101058675B - Modified hemp stalk core powder composition - Google Patents
Modified hemp stalk core powder composition Download PDFInfo
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- CN101058675B CN101058675B CN2007100090192A CN200710009019A CN101058675B CN 101058675 B CN101058675 B CN 101058675B CN 2007100090192 A CN2007100090192 A CN 2007100090192A CN 200710009019 A CN200710009019 A CN 200710009019A CN 101058675 B CN101058675 B CN 101058675B
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Abstract
The invention discloses a modified composition of hemp rod core, which comprises the following parts: 35-90wt% hemp rod core powder, 10-65wt% compatible agent, 0-5wt% one or more manufacturing adjuvant and 0-20wt% one or more additive. The composition can be an organic filler to be added into other polymer base directly, which modifies the boundary connection of composite material and improves the mechanic property with low cost.
Description
Technical field
The present invention relates to a kind of natural fiber reinforced composite, specifically is modified hemp stalk core powder composition.
Background technology
Fibre reinforced composites are important branch of Materials science, traditional fiber reinforced material mainly comprises artificial synthetic fibers such as glass fibre, aromatic polyamide fibre or carbon fiber, they exist all generally that power consumption is big, cost is high, easily cause problem such as environmental pollution, and the strength and stiffness that various natural fibers (as flaxen fiber, bamboo fibers, cotton fibre etc.) not only have traditional fibre, and be that a kind of light weight is inexpensive, the nature degradable, the green fiber of environmentally safe.In recent years, along with the enhancing of human environment consciousness, the research and development of natural fiber reinforced composite are used, and become one of focus of research and development.Wherein flaxen fiber length is the longest in the natural fiber, has the character of high-strength flatness simultaneously, and bast-fibre is had rich in natural resources as strongthener.
Hemp is a kind of of crudefiber crop, it is a kind of herbaceous plant, plant with a long history, in ancient times, hemp is mainly used in rope, weave cotton cloth and paper making raw material etc., but along with social development, it is found that and contain a kind of toxic component THC (tetrahydrocannabinol) in the hemp, can make the people cause unreal habituation, add the natural fiber that other is more cheap and the existence of synthon, make the applied research of hemp in one period be restricted.Up to eighties of last century the 80s and 90s, along with the raising of people's level of understanding with to the increase day by day of " green " textiles demand, hemp has caused people's attention once more as a kind of ecological spinning raw material; Particularly 1992 the low toxicity hemp (THC content is lower than 0.3%) cultivation success, people are also increasing year by year to production and the research of hemp.
The stem stalk of hemp partly accounts for the 70-80% of whole hemp crop, is topmost research and application in the real industry.Big anesthesia stem is made up of phloem, xylem, marrow three parts.The bast of hemp partly is the macrofiber that contains the low xylogen of high-cellulose, it is the source of good fibrous material, fiber production is higher than traditional natural fibers such as cotton, flax, ramie, and have that anti-mildew is antibacterial, antistatic, characteristics such as antiultraviolet can also sound insulation, moisture absorption, ventilative heat conduction, therefore be applied to textile industry, be the desirable feedstock of health textile more.And the stalk core of hemp is the staple fibre that contains low Mierocrystalline cellulose high lignin, has like the hardwood feature, is the excellent raw material of papermaking, and is one of raw material of processing viscose.
The research of hemp fibre (Hemp Fiber)/polymer composites is research focus in recent years, but carry out at present in the hemp fibre/polymer composites of big quantity research and application, used hemp fibre substantially all is the macrofiber of bast part, and the staple fibre of stalk core segment does not appear in the newspapers, and mainly is because the reinforced effects of the staple fibre of stalk core segment is not so good as the macrofiber of bast part.Yet, in actual applications, because the stalk core segment has occupied the 70-80% of whole hemp, so hemp stalk core has huge potential using value in hemp/polymer composites.
Hemp stalk core powder is a kind of pulverous material that is obtained by mechanical disintegration by the residuum of hemp stalk core after by hemp crop bast peeling and leaf fiber.If with it as a kind of organic filler, add in the polymeric matrix and go, have and the unrivaled superiority of other mineral filler, its wide material sources, cheap, density is low, little to equipment attrition, can play lightweight, strengthen toughness reinforcing, reduce cost, can also make goods have effects such as anti-electrostatic, antibiotic, uvioresistant concurrently.The research and development of hemp stalk core powder and polymer composites can provide the chance that makes full use of natural resource, can alleviate the environmental pollution that causes owing to waste or used plastics simultaneously.Therefore, this fiber crops-plastic composite materials is a kind of save energy, the green material of protection environment.It has wide application prospect in all respects of building materials, carplane, packed and transported, decoration and daily life.
But because the hemp stalk core powder main component is a Mierocrystalline cellulose, contain a large amount of hydroxyls on its chemical structure, these hydroxyl groups make hemp stalk core powder have water-absorbent, and polarity are very strong at intramolecularly and intermolecular formation hydrogen bond.This has caused itself and polymkeric substance (especially non-polar polymer) compound tense, and both consistencies are very poor, make that goods are easy to crack, mechanical property can not get very big improvement, certainly will limit its widespread use.Use suitable compatilizer that hemp stalk core powder is carried out modification, can improve the consistency and the interface avidity of itself and Plastic Resin, thereby reach the effect of improving products machinery performance and its widespread use of expansion.
Do not find other modification relevant report so far as yet to hemp stalk core powder.
Summary of the invention
The objective of the invention is to solve the problem of hemp stalk core powder and the direct compound consistency difference of polymkeric substance, provide a kind of and can more easily process, good dispersity, and can improve with the polymeric matrix interface combining simultaneously, improve the modified hemp stalk core powder composition of products machinery performance.
Technical scheme of the present invention is such: modified hemp stalk core powder composition comprises that the hemp stalk core powder of 35-90wt% and the compatilizer of 10-65wt% are composited; Above-mentioned compatilizer is and acrylic acid-grafted multipolymer, or is the multipolymer of the derivative relevant with vinylformic acid; The above-mentioned derivative relevant with vinylformic acid is acrylate or acrylamide.
One or more processing aids that also comprise 0-5wt%.
One or more additives that also comprise 0-20wt%.
Above-mentioned hemp stalk core powder is to pulverize the granularity of acquisition between 10-600 purpose powder by the residuum behind hemp crop bast peeling and the leaf fiber by fragmentation.
Above-mentioned processing aid is stearic acid, paraffin or polyethylene wax, plays to promote to disperse, and improves the effect of processing.
Above-mentioned additive is lime carbonate and talcum powder, to reach the effect that reduces cost.
After adopting such scheme, the invention has the beneficial effects as follows: provide a kind of new type natural fibrous packing, with itself and polymkeric substance compound tense, can improve the interface combination of matrix material, improve mechanical property, the goods of reduction cost is arranged simultaneously, expansion is to the range of application of industrial hemp.
Specific examples
Embodiment 1:
Modified hemp stalk core powder composition of the present invention, be to be matrix with ethene-acetate ethylene copolymer (EVA) of containing vinyl acetate between to for plastic 18%, add certain elastomerics, filler and additive, elastomerics is ethene-octene copolymer (POE), filler is a hemp stalk core powder, and additive comprises to be had: linking agent dicumyl peroxide (DCP), whipping agent azo two formyl ammoniums (AC), disperse activator zinc oxide (ZnO), thermo-stabilizer Zinic stearas (StZn), and a small amount of stearic acid (Hst) and ethene-acrylic copolymer (EAA) etc.With the compound banburying of each component.The weight percent of their relative evas is:
POE 15.38％
Hemp stalk core powder 38.46%
EAA 7.69％
DCP 0.92％
AC 4.62％
ZnO 1.54％
StZn 1.08％
Hst 1.23％
Final resulting product can be directly used in makes various sports shoess, playshoes etc.Make it not only when dress is used, have more ventilative comfortable effect, can not produce situation sultry, breed bacteria in shoes inside, and, make it have more toughness, and easier decomposition simultaneously, incineration and do not have environmental issue and take place because of hemp stalk core powder is mixed in the foam material.
Embodiment 2:
Modified hemp stalk core powder composition of the present invention, be to be matrix with vinylbenzene-divinyl-vinylbenzene (SBS), add certain filler and additive, filler is a hemp stalk core powder, and additive comprises to be had: ethene-acrylic copolymer (EAA), vinylbenzene (PS), thermo-stabilizer Zinic stearas (StZn), stearic acid (Hst) and cycloalkanes wet goods.With each component mixing banburying.The weight percent of their relative vinylbenzene-divinyl-vinylbenzene (SBS) is:
Hemp stalk core powder 40%
PS 35％
EAA 4％
StZn 10％
Hst 0.5％
Naphthenic oil 0.5%
The final resulting product size of injection moulding is stable, and dependable performance is difficult for shrinking, and has permeability, can be directly used in and make various sports shoess, playshoes etc., and shoes inside can not produce sultry, breed bacteria.Product is a degradable simultaneously, can not cause problem of environmental pollution.
Claims (6)
1. modified hemp stalk core powder composition is characterized in that: comprise that the hemp stalk core powder of 35-90wt% and the compatilizer of 10-65wt% are composited; Above-mentioned compatilizer is and acrylic acid-grafted multipolymer, or is the multipolymer of the derivative relevant with vinylformic acid; The above-mentioned derivative relevant with vinylformic acid is acrylate or acrylamide.
2. modified hemp stalk core powder composition according to claim 1 is characterized in that: one or more processing aids that also comprise 0-5wt%.
3. modified hemp stalk core powder composition according to claim 1 is characterized in that: one or more additives that also comprise 0-20wt%.
4. modified hemp stalk core powder composition according to claim 1 is characterized in that: above-mentioned hemp stalk core powder is to pulverize the granularity of acquisition between 10-600 purpose powder by the residuum behind hemp crop bast peeling and the leaf fiber by fragmentation.
5. modified hemp stalk core powder composition according to claim 2 is characterized in that: above-mentioned processing aid is stearic acid, paraffin or polyethylene wax, plays to promote to disperse, and improves the effect of processing.
6. modified hemp stalk core powder composition according to claim 3 is characterized in that: above-mentioned additive is lime carbonate and talcum powder, to reach the effect that reduces cost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100090192A CN101058675B (en) | 2007-05-23 | 2007-05-23 | Modified hemp stalk core powder composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100090192A CN101058675B (en) | 2007-05-23 | 2007-05-23 | Modified hemp stalk core powder composition |
Publications (2)
| Publication Number | Publication Date |
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| CN101058675A CN101058675A (en) | 2007-10-24 |
| CN101058675B true CN101058675B (en) | 2011-05-04 |
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| CN2007100090192A Expired - Fee Related CN101058675B (en) | 2007-05-23 | 2007-05-23 | Modified hemp stalk core powder composition |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735395B (en) * | 2009-12-24 | 2012-01-25 | 昆明理工大学 | Preparation method of water absorbing material of industrial hemp stalk core cellulose |
| CN115536862A (en) * | 2022-10-24 | 2022-12-30 | 汉麻总部(广东)投资有限公司 | Modified hemp stalk core powder, reinforced polypropylene composite material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1536026A (en) * | 2003-04-09 | 2004-10-13 | 上海铭新环卫工程科技有限公司 | Hemp stalk core plastics composite material |
| CN1823130A (en) * | 2003-06-11 | 2006-08-23 | 3M创新有限公司 | Compositions and method for improving the processing of polymer composites |
| CA2407880C (en) * | 2002-10-26 | 2011-02-01 | Mohini M. Sain | Process to manufacture high impact natural composites |
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2007
- 2007-05-23 CN CN2007100090192A patent/CN101058675B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2407880C (en) * | 2002-10-26 | 2011-02-01 | Mohini M. Sain | Process to manufacture high impact natural composites |
| CN1536026A (en) * | 2003-04-09 | 2004-10-13 | 上海铭新环卫工程科技有限公司 | Hemp stalk core plastics composite material |
| CN1823130A (en) * | 2003-06-11 | 2006-08-23 | 3M创新有限公司 | Compositions and method for improving the processing of polymer composites |
Non-Patent Citations (2)
| Title |
|---|
| 徐磊等."麻非织造复合材料的开发和应用".非织造布第13卷 第4期.2005,第13卷(第4期),第24-27页. |
| 徐磊等."麻非织造复合材料的开发和应用".非织造布第13卷 第4期.2005,第13卷(第4期),第24-27页. * |
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| CN101058675A (en) | 2007-10-24 |
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