At present such high handed down to spend a few, most series wood acid technology, the era of the late Qing to the Republic of China.

目前這類(lèi)傳世高花幾，絕大多數(shù)系酸技術(shù)木制成久欠精品国国产99国产精2020，時(shí)代都在清晚期至民國(guó)時(shí)期a片射。

In order to study the effects of acid catalysts on wood liquefaction in phenol, the liquefaction of wood powder from Chinese fir and poplar in the presence of phenol using several relatively weak acids as catalysts, such as phosphoric acid (85%), sulfuric acid (36%), hydrochloric acid (37%) and oxalic acid (99%), were investigated.

為了探討酸性催化劑對(duì)木材苯酚液化的影響，該研究采用磷酸(85%)、低濃硫酸(36%)日本国产亚洲、鹽酸(37%)人人操人人爱乳房、草酸(99.5%)4種弱酸性無(wú)機(jī)酸，在不同溫度下進(jìn)行了木材的液化試驗(yàn)亚洲一级黄片在线看。

Brown-rotted wood can be more easily liquefied than normal wood. When the weightratio of wood and Phenol to phosphoric acid was 1:2:0.16, the residue content of liquefieddecayed wood was only 7.6％for 0.5h.

試驗(yàn)結(jié)果證明欧美大乳爱爱视频小日本爱爱视频，當(dāng)1％NaOH抽出物或結(jié)晶度變化至54％和28％左右時(shí)，木材的生物預(yù)降解程度即可達(dá)到緩和液化條件的目的jizzcom。

Wood Vinegar is a natural material that is distilled from wood. It is compose of organic acid and hydroxybenzene , Various dosage of wood vinegars, pyrolignerous acid and guaiacol were mixed into organic manure firstly in this experiment, and then, the above said organic manure are separately added into soil. Under the analysis of the amount of the edaphon, adding 10g wood vinegar to 1kg organic manure and 30kg soil can much active the edaphon effectively in a short term and make a maximum rising extent of edaphon numbers.

木醋液是從多年生柞木中經(jīng)過(guò)高溫蒸餾出來(lái)的純天然物質(zhì)在线观看黄v视频国产，其主要成分是有機(jī)酸和酚類(lèi)物質(zhì)，為了明確木醋液和主要成分對(duì)土壤微生物的作用国产一区鲁鲁在线视频免费播放，將加入不同劑量的木醋液国产在线com、愈創(chuàng)木酚、醋酸的有機(jī)肥施入土壤1024日韩欧美手机在线你懂的，觀察土壤中微生物數(shù)量的變化草逼福利视频，結(jié)果表明：在1kg有機(jī)肥中加入10g木醋液，施入30kg土壤中国产91最新资源网址，土壤微生物數(shù)量增加幅度最大日本黄页网址免费，土壤微生物10天內(nèi)被有效地激活；同時(shí)国产黄色片视频,，當(dāng)在1kg有機(jī)肥中木醋液的添加量高達(dá)50g時(shí)国产人成视频在线观看播放，對(duì)土壤微生物有一定的抑制作用。

Rice bran wax to fatty acids and senior wax mainly composed of alcohol, fatty acids are palmitic acid (C16), Gan II acid (C22), wood wax acid (C24), wax acid [26 acid] (C26) and other major components of wax alcohols have wax alcohol (C26), different serine alcohol wax, beeswax alcohol (C30), etc.; also contains alcohol to beeswax (C30), wax alcohol, alcohol wax for different serine The main constituents of unsaponifiable matter and a number of free acid mainly palmitic acid is brown, trace of alcohols, 30, such as carbon six elemene liposome.

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Therefore esterification crosslinked reactionbetween polyearboxylic acid and wood can be quantitatively determined.According toexperiment results of stereoscopic configuration choices by crosslinking agents,crosslinkingreaction between model of reaction intermediate and wood,and the intermediate characteristic incrosslinking reaction,crosslinking reaction intermediate was proofed.We can infercrosslinking reactions between polycarboxylicacid and wood want through a mechanism of twosteps reaction process,the first cyclic anhydrides were formed as intermediates by dehydratingbetween hydroxyls in polycarboxylic acids,second esters were occurred by substitution reactionbetween wood hydroxyls and cyclic anhydrides.

從而可全面定量表征木材與多元羧酸類(lèi)化合物的酯化交聯(lián)反應(yīng)日韩午夜无码精品试看爱情；依據(jù)交聯(lián)劑立體構(gòu)型選擇性本地自拍日韩在线播放视频免费观看、反應(yīng)中間體模型物與木材的交聯(lián)反應(yīng)和交聯(lián)反應(yīng)中間體的波譜特征實(shí)驗(yàn)結(jié)果，證實(shí)了交聯(lián)反應(yīng)中間體cao免费视频，因此可以推測(cè)：多元羧酸類(lèi)化合物與木材化學(xué)組分的交聯(lián)反應(yīng)是經(jīng)歷兩步反應(yīng)的機(jī)理三级片黄色成年人a片，首先多元羧酸中相鄰羧基的羥基之間脫水形成五元環(huán)酸酐中間體，然后木材的羥基與酸酐發(fā)生親核取代反應(yīng)形成酯。

At the same time, a continuous restraint on the edaphon, including those existing in the tested roots will happen when 50g wood vinegar are added into 1kg organic manure and 30kg soil.However, the influence of pyrolignerous acid and guaiacol were not same with wood vinegars. The reason that wood vinegars can much active the edaphon effectively, is not only the pyrolignerous acid or guaiacol reacted.

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Wood Vinegar is a natural material that is distilled from wood. It is compose of organic acid and hydroxybenzene , Various dosage of wood vinegars, pyrolignerous acid and guaiacol were mixed into organic manure firstly in this experiment, and then, the above said organic manure are separately added into soil. Under the analysis of the amount of the edaphon, adding 10g wood vinegar to 1kg organic manure and 30kg soil can much active the edaphon effectively in a short term and make a maximum rising extent of edaphon numbers.

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Results show that acid value of carboxylic wood powder from alkaline hydrolysis is higher,but its yield is lower than that from acid hydrolysis. The adsorption capacity of carboxylic wood powder for basic pink dye increased with increase of the initial concentration of the adsorbate,and could be kept over 500mg/g after repeated use and regeneration for 4 times.

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The results show that: processing aids which mainly consist of unsaturated aromatic hydrocarbon and aliphatic hydrocarbon resin are able to improve the dispersion of the wood flour in PVC matrix, and amend the interfacial compatibilities between PVC matrix and wood flour, and enhance the mechanical and processing properties of PVC/ wood flour composites; Processing aids which mainly consist of calcium soap and saturated fatty acid amide mixture, as well as fatty alcohol and fatty acid ester mixture, are also able to improve the dispersion of the wood flour in PVC matrix and enhance the processing property of the composites, but when the use amount is big, they have adverse effects on mechanical properties of the composites.

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