一，聚苯醚PPE特點(diǎn)

1、 Characteristics of polyphenylene ether PPE

PPE是一種綜合性能優(yōu) 質(zhì)的熱固性塑料工程塑料，突出電介電強(qiáng)度和耐磨性優(yōu)異，規(guī)格可靠性好。

PPE is a thermosetting plastic engineering plastic with high comprehensive performance, outstanding dielectric strength and wear resistance, and good specification and reliability.

1.介電性能居工程塑料第 一：PPE環(huán)氧樹(shù)脂分子中沒(méi)有旋轉(zhuǎn)基團(tuán)，電氣性能穩(wěn)定，能在一般溫度和頻率范圍內(nèi)保持穩(wěn)定的電氣性能。其導(dǎo)熱系數(shù)和介電損耗角正切是工程塑料中zui少的，基本不受溫度、環(huán)境濕度和頻率的影響。其體積電阻率是工程塑料中zui大的。PPE優(yōu)異的電氣性能使其廣泛應(yīng)用于家電的生產(chǎn)和制造，尤其是耐高壓部件，如彩電行輸出變壓器(FBT)等。

1. The dielectric property ranks first in engineering plastics: there is no rotating group in the molecule of PPE epoxy resin, the electrical property is stable, and it can maintain stable electrical property within the general temperature and frequency range. Its thermal conductivity and dielectric loss tangent are less than those of engineering plastics, and are basically not affected by temperature, ambient humidity and frequency. Its volume resistivity is the largest among engineering plastics. The excellent electrical performance of PPE makes it widely used in the production and manufacture of household appliances, especially high-voltage components, such as color TV line output transformer (FBT), etc.

2.機(jī)械設(shè)備性能及熱性能優(yōu)異：PPE在子鏈中，有許多芳香的環(huán)結(jié)構(gòu)，分子結(jié)構(gòu)鏈具有很強(qiáng)的理性。環(huán)氧樹(shù)脂具有較高的沖擊韌性松弛性高，溫度變化危害小。PPE耐溫性高，玻璃化溫度達(dá)到211℃，溶點(diǎn)268℃。

2. Excellent mechanical equipment performance and thermal performance: PPE has many aromatic ring structures in the sub-chain, and the molecular structure chain has strong rationality. Epoxy resin has high impact toughness, high relaxation and little harm from temperature change. PPE has high temperature resistance, with a glass transition temperature of 211 ℃ and a melting point of 268 ℃.

3.優(yōu)異的耐磨性：PPE作為一種非晶環(huán)氧樹(shù)脂，在一般溫度范圍內(nèi)，分子熱運(yùn)動(dòng)較少，碳鏈中沒(méi)有大的旋轉(zhuǎn)基團(tuán)，偶ji矩不產(chǎn)生分ji，耐磨性好，是工程塑料中含水量zui低的一種。長(zhǎng)期浸泡在沸水中的物理性能仍很少下降。

3. Excellent wear resistance: As a kind of amorphous epoxy resin, within the general temperature range, the molecular thermal movement is less, there is no large rotating group in the carbon chain, and even ji moment does not produce component ji, so the wear resistance is good. It is one of the low water content zui in engineering plastics. The physical properties of long-term immersion in boiling water are still rarely reduced.

二、PE拉鏈袋的主要用途是：

2、 The main uses of PE zipper bags are:

LDPE(高壓高壓聚乙烯)：其工藝品密度相對(duì)較低，相容性好，介電強(qiáng)度好。適用于農(nóng)業(yè)塑料薄膜(溫室薄膜、農(nóng)業(yè)塑料薄膜)、重包裝薄膜、熱縮膜、保護(hù)膜、絕緣材料、絕緣套管的生產(chǎn)制造，可用于注塑、擠壓成型、聚氨酯泡沫等生產(chǎn)加工行業(yè)。、無(wú)異味、表面光澤的乳白色圓柱形顆粒具有優(yōu)異的延展性、介電強(qiáng)度、晶粒大小百分之55-65、晶體溶點(diǎn)108-126℃。商品、無(wú)氣味、無(wú)臭乳白色顆粒物，溶點(diǎn)約130℃，密度0.941—0.965。具有優(yōu)異的耐溫性和耐寒性。有機(jī)化學(xué)可靠性好，剛度和延展性高，沖擊韌性好，介電性能好，抗自然環(huán)境應(yīng)力裂紋性能好。

LDPE (high pressure and high pressure polyethylene): its handicraft has relatively low density, good compatibility and good dielectric strength. It is applicable to the production and manufacturing of agricultural plastic film (greenhouse film, agricultural plastic film), heavy packaging film, heat shrinkable film, protective film, insulating material, insulating sleeve, injection molding, extrusion molding, polyurethane foam and other production and processing industries. The non-toxic, odorless and glossy milky white cylindrical particles have excellent ductility, dielectric strength, grain size of 55-65%, and crystal melting point of 108-126 ℃. The product is non-toxic, odorless and odorless milky white particles, with a melting point of about 130 ℃ and a density of 0.941-0.965. It has excellent temperature resistance and cold resistance. Organic chemistry has good reliability, high rigidity and ductility, good impact toughness, good dielectric properties, and good resistance to natural environment stress cracking.

LLDPE(線性高壓聚乙烯)：、無(wú)異味、無(wú)異味的乳白色顆粒物，密度0.918—0.939。與LDPE與比之下，它具有抗壓強(qiáng)度高、延展性好、剛度強(qiáng)、耐高溫、耐低溫等優(yōu)點(diǎn)。它還具有優(yōu)異的抗自然環(huán)境應(yīng)力裂紋、抗撕裂和抗壓強(qiáng)度，以及耐酸、堿、溶劑等。

LLDPE (linear high pressure polyethylene): non-toxic, odorless and odorless milky white particles with density of 0.918-0.939. Compared with LDPE, it has the advantages of high compressive strength, good ductility, strong rigidity, high temperature resistance and low temperature resistance. It also has excellent resistance to natural environment stress cracking, tear resistance and compressive strength, as well as acid, alkali and solvent resistance.

我們都做包裝袋，所以遇到了PE拉鏈袋和貼骨袋都用LDPE致密原料制成保護(hù)膜，其清晰度、延展性、性、耐溫性和耐寒性較高。這與客戶會(huì)問(wèn)的問(wèn)題有關(guān)，通常說(shuō)PPE拉鏈袋和PPE貼骨袋都比PE拉鏈袋和貼骨袋要透明得多。PPE如果用在拉鏈袋層面，要高度重視是否有粉末或無(wú)粉末。

We all make packaging bags, so PE zipper bags and bone sticking bags are made of LDPE dense raw materials into protective films, with high clarity, ductility, environmental protection, temperature resistance and cold resistance. This is related to the questions that customers will ask. Generally speaking, PPE zipper bag and PPE bone sticking bag are much more transparent than PE zipper bag and bone sticking bag. If PPE is used at the zipper bag level, high attention should be paid to whether there is powder or no powder.

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