Self sealing bag is now a very high frequency of use of a common tool in life, the daily consumption is also very amazing. It is because of the huge consumption every day that many self sealing bags that can still be used are discarded. Part of the reason is that the price of self sealing bags is cheaper and no one cares. However, due to the characteristics of self sealing bag itself, it is difficult to decompose and regenerate after being discarded at will, damaging the public environment.

自封袋聚氨酯熱彈性體有較高的撕裂強(qiáng)度，通?？蛇_(dá)天然橡膠10倍。但耐高溫性能鉸差，作環(huán)境溫度高于能就有所下降。電性能方面，由于聚氨酪熱彈性體具有一定的親水特性能，吸收空氣小的水分而位絕緣性下降．在高絕緣場合中使用受到限制熱塑性彈性體除亡述外二烯之類。

The tear strength of self sealing polyurethane elastomer is 10 times that of natural rubber. However, the high temperature resistance is poor, and it will decrease when the ambient temperature is higher than energy. In terms of electrical properties, due to the hydrophilic properties of polyurethane elastomer, it can absorb small amount of moisture in the air and reduce the insulation. In the case of high insulation, the use of thermoplastic elastomer is limited except diene.

在大多數(shù)情況下，成注塑的制的原材料都用全新料。但對于一些使用要求不高的制品，人們往往來用再生原料進(jìn)行注塑生產(chǎn)。這一方面可以降低成本；另一方面可以實(shí)現(xiàn)塑料材料的循環(huán)利用。

In most cases, the raw materials for injection molding are brand new. But for some products with low requirements, people often use recycled materials for injection production. On the one hand, it can reduce the cost; on the other hand, it can realize the recycling of plastic materials.

有利于環(huán)境保護(hù)。大多數(shù)熱理性塑料制品都是可以回收利用的，如通常，用于注塑制品的回料都是一些比較干凈、老化程度水嚴(yán)重的塑料。其主要來源有兩個(gè)方面。

It is conducive to environmental protection. Most thermal plastic products can be recycled. For example, the recycled materials used for injection molding products are relatively clean and aging plastics. There are two main sources.

塑料生產(chǎn)廠生產(chǎn)過程中產(chǎn)生的邊角料、廢次品等，填料的大小和表面形狀對塑料性能竹一定的影響，球狀、立方體狀的通常可提高成功加L性能，但機(jī)械強(qiáng)度差；16鱗片狀的則相反，粒子越細(xì)，對聚合物的剛性、沖擊性、拉仲強(qiáng)度和外觀等改進(jìn)作用越大。加入填料可能導(dǎo)致聚合物某些性能下降，如粉狀填料常使塑料的拉伸強(qiáng)度、撕裂強(qiáng)度和耐低溫性下降。

The size and surface shape of fillers have a certain influence on the properties of leftover materials and defective products produced in the production process of plastic plants. Spherical and cubic fillers can usually improve the properties of successful addition of L, but the mechanical strength is poor. On the contrary, the finer the particles are, the greater the improvement effect on the rigidity, impact, tensile strength and appearance of the polymer is. The addition of fillers may decrease some properties of polymers, such as the tensile strength, tear strength and low temperature resistance of plastics.

大量加入時(shí)使成型加上性能和表面光澤下降，故應(yīng)當(dāng)合理地選用品種、規(guī)格和加入量。在選擇填料時(shí)，要求填料具有以下幾點(diǎn)性能：在樹脂中分散性好、填充量大；不降低樹脂的加丁性能及制品的物理件能的改性效果；本身應(yīng)具備耐水性、耐熱性、耐化學(xué)腐蝕件；個(gè)影響其他助劑的分散件和什能；對增塑劑的吸收量小，無曲折白化現(xiàn)象。

When a large number of additives are added, the molding performance and surface gloss will be reduced, so the varieties, specifications and dosage should be selected reasonably. In the selection of fillers, fillers are required to have the following properties: good dispersion in the resin, large filling amount; do not reduce the modification effect of the properties of the resin and the physical parts of the product; it should have water resistance, heat resistance, chemical corrosion resistance parts; it should be able to affect the dispersions and properties of other additives; it has small absorption of plasticizer and no tortuous whitening phenomenon.

關(guān)于填料的作用機(jī)理，一般解釋為：填亢粒子的活性表回與一些聚合物大分子鏈結(jié)合，形成交聯(lián)結(jié)構(gòu)。當(dāng)其中的一個(gè)分子接受到應(yīng)力時(shí)，可通過這些交聯(lián)點(diǎn)將應(yīng)力分散到其他分子土。

The mechanism of the fillers is generally explained as follows: the active surface of the fillers combines with some polymer macromolecular chains to form a cross-linking structure. When one of the molecules is stressed, the stress can be dispersed to other molecular soils through these crosslinking points.

如果其小某一鏈斷裂，其他鐵同樣DJ起到加固作用，而不會迅速影響到整個(gè)制品。如今，塑料袋在生活中隨處可見，人們在裝東西的時(shí)候也會自然而然的想到使用塑料袋。但是，塑料袋在方便人們的是生活的同時(shí)，也在危害你的健康。

If a small chain breaks, other iron DJ also plays a reinforcing role, and will not quickly affect the whole product. Nowadays, plastic bags can be seen everywhere in life, people will naturally think of using plastic bags when they are loading things. However, plastic bags are not only convenient for people's life, but also harmful to your health.