一，聚苯醚PPE特点

1、 Characteristics of polyphenylene ether PPE

PPE是一种综合性能优 质的热固性塑料工程塑料，突出电介电强度和耐磨性优异，规格可靠性好。

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

1.介电性能居工程塑料第 一：PPE环氧树脂分子中没有旋转基团，电气性能稳定，能在一般温度和频率范围内保持稳定的电气性能。其导热系数和介电损耗角正切是工程塑料中zui少的，基本不受温度、环境湿度和频率的影响。其体积电阻率是工程塑料中zui大的。PPE优异的电气性能使其广泛应用于家电的生产和制造，尤其是耐高压部件，如彩电行输出变压器(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.机械设备性能及热性能优异：PPE在子链中，有许多芳香的环结构，分子结构链具有很强的理性。环氧树脂具有较高的冲击韧性松弛性高，温度变化危害小。PPE耐温性高，玻璃化温度达到211℃，溶点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.优异的耐磨性：PPE作为一种非晶环氧树脂，在一般温度范围内，分子热运动较少，碳链中没有大的旋转基团，偶ji矩不产生分ji，耐磨性好，是工程塑料中含水量zui低的一种。长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拉链袋的主要用途是：

2、 The main uses of PE zipper bags are:

LDPE(高压高压聚乙烯)：其工艺品密度相对较低，相容性好，介电强度好。适用于农业塑料薄膜(温室薄膜、农业塑料薄膜)、重包装薄膜、热缩膜、保护膜、绝缘材料、绝缘套管的生产制造，可用于注塑、挤压成型、聚氨酯泡沫等生产加工行业。、无异味、表面光泽的乳白色圆柱形颗粒具有优异的延展性、介电强度、晶粒大小百分之55-65、晶体溶点108-126℃。商品、无气味、无臭乳白色颗粒物，溶点约130℃，密度0.941—0.965。具有优异的耐温性和耐寒性。有机化学可靠性好，刚度和延展性高，冲击韧性好，介电性能好，抗自然环境应力裂纹性能好。

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(线性高压聚乙烯)：、无异味、无异味的乳白色颗粒物，密度0.918—0.939。与LDPE与比之下，它具有抗压强度高、延展性好、刚度强、耐高温、耐低温等优点。它还具有优异的抗自然环境应力裂纹、抗撕裂和抗压强度，以及耐酸、碱、溶剂等。

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.

我们都做包装袋，所以遇到了PE拉链袋和贴骨袋都用LDPE致密原料制成保护膜，其清晰度、延展性、性、耐温性和耐寒性较高。这与客户会问的问题有关，通常说PPE拉链袋和PPE贴骨袋都比PE拉链袋和贴骨袋要透明得多。PPE如果用在拉链袋层面，要高度重视是否有粉末或无粉末。

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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